protected static string GetFromStatement(StandardProviderParameters std, esDynamicQuerySerializable query)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string sql = String.Empty;
if (iQuery.InternalFromQuery == null)
{
sql = Shared.CreateFullName(query);
if (iQuery.JoinAlias != " ")
{
sql += " " + iQuery.JoinAlias;
}
}
else
{
IDynamicQuerySerializableInternal iSubQuery = iQuery.InternalFromQuery as IDynamicQuerySerializableInternal;
iSubQuery.IsInSubQuery = true;
sql += "(";
sql += BuildQuery(std, iQuery.InternalFromQuery);
sql += ")";
if (iSubQuery.SubQueryAlias != " ")
{
sql += " AS " + iSubQuery.SubQueryAlias;
}
iSubQuery.IsInSubQuery = false;
}
return sql;
}
protected static string GetFromStatement(esDataRequest request, esDynamicQuerySerializable query, VistaDBCommand cmd, ref int pindex)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string sql = String.Empty;
if (iQuery.InternalFromQuery == null)
{
sql = Shared.CreateFullName(query);
if (iQuery.JoinAlias != " ")
{
sql += " " + iQuery.JoinAlias;
}
}
else
{
IDynamicQuerySerializableInternal iSubQuery = iQuery.InternalFromQuery as IDynamicQuerySerializableInternal;
iSubQuery.IsInSubQuery = true;
sql += "(";
sql += BuildQuery(request, iQuery.InternalFromQuery, cmd, ref pindex);
sql += ")";
if (iSubQuery.SubQueryAlias != " ")
{
sql += " AS " + iSubQuery.SubQueryAlias;
}
iSubQuery.IsInSubQuery = false;
}
return sql;
}
protected static string BuildQuery(StandardProviderParameters std, esDynamicQuerySerializable query)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
bool selectAll = (iQuery.InternalSelectColumns == null && !query.es.CountAll);
bool paging = false;
if (query.es.PageNumber.HasValue && query.es.PageSize.HasValue)
paging = true;
string select = GetSelectStatement(std, query);
string from = GetFromStatement(std, query);
string join = GetJoinStatement(std, query);
string where = GetComparisonStatement(std, query, iQuery.InternalWhereItems, " WHERE ");
string groupBy = GetGroupByStatement(std, query);
string having = GetComparisonStatement(std, query, iQuery.InternalHavingItems, " HAVING ");
string orderBy = GetOrderByStatement(std, query);
string setOperation = GetSetOperationStatement(std, query);
string sql = String.Empty;
if (paging)
{
int begRow = ((query.es.PageNumber.Value - 1) * query.es.PageSize.Value) + 1;
int endRow = begRow + (query.es.PageSize.Value - 1);
// The WITH statement
sql += "WITH \"withStatement\" AS (";
if (selectAll)
{
sql += "SELECT " +
Delimiters.TableOpen + query.es.QuerySource + Delimiters.TableClose
+ ".*, ROW_NUMBER() OVER(" + orderBy + ") AS ESRN ";
}
else
{
sql += "SELECT " + select + ", ROW_NUMBER() OVER(" + orderBy + ") AS ESRN ";
}
sql += "FROM " + from + join + where + groupBy + ") ";
// The actual select
if (selectAll || join.Length > 0 || groupBy.Length > 0 || query.es.Distinct)
{
sql += "SELECT " +
Delimiters.TableOpen + "withStatement" + Delimiters.TableClose
+ ".* FROM \"withStatement\" ";
}
else
{
sql += "SELECT " + select + " FROM \"withStatement\" ";
}
sql += "WHERE ESRN BETWEEN " + begRow + " AND " + endRow;
sql += " ORDER BY ESRN ASC";
}
else
{
sql += "SELECT " + select + " FROM " + from + join + where + setOperation + groupBy + having + orderBy;
}
return sql;
}
protected static string BuildQuery(StandardProviderParameters std, esDynamicQuerySerializable query)
{
bool paging = false;
if (query.es.PageNumber.HasValue && query.es.PageSize.HasValue)
paging = true;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string select = GetSelectStatement(std, query);
string from = GetFromStatement(std, query);
string join = GetJoinStatement(std, query);
string where = GetComparisonStatement(std, query, iQuery.InternalWhereItems, " WHERE ");
string groupBy = GetGroupByStatement(std, query);
string having = GetComparisonStatement(std, query, iQuery.InternalHavingItems, " HAVING ");
string orderBy = GetOrderByStatement(std, query);
string setOperation = GetSetOperationStatement(std, query);
string sql = String.Empty;
if (paging)
{
int begRow = ((query.es.PageNumber.Value - 1) * query.es.PageSize.Value) + 1;
int endRow = begRow + (query.es.PageSize.Value - 1);
// The WITH statement
sql += "WITH [withStatement] AS (";
sql += "SELECT " + select + ", ROW_NUMBER() OVER(" + orderBy + ") AS ESRN ";
sql += "FROM " + from + join + where + groupBy + ") ";
sql += "SELECT * FROM [withStatement] ";
sql += "WHERE ESRN BETWEEN " + begRow + " AND " + endRow;
sql += " ORDER BY ESRN ASC";
}
else
{
sql += "SELECT " + select + " FROM " + from + join + where + setOperation + groupBy + having + orderBy;
}
if (iQuery.Skip.HasValue || iQuery.Take.HasValue)
{
if (iQuery.Skip.HasValue)
{
sql += " OFFSET " + iQuery.Skip.ToString() + " ROWS ";
}
if (iQuery.Take.HasValue)
{
sql += " FETCH NEXT " + iQuery.Take.ToString() + " ROWS ONLY ";
}
}
return sql;
}
protected static string BuildQuery(StandardProviderParameters std, esDynamicQuerySerializable query)
{
bool paging = false;
if (query.es.PageNumber.HasValue && query.es.PageSize.HasValue)
{
paging = true;
}
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string select = GetSelectStatement(std, query);
string from = GetFromStatement(std, query);
string join = GetJoinStatement(std, query);
string where = GetComparisonStatement(std, query, iQuery.InternalWhereItems, " WHERE ");
string groupBy = GetGroupByStatement(std, query);
string having = GetComparisonStatement(std, query, iQuery.InternalHavingItems, " HAVING ");
string orderBy = GetOrderByStatement(std, query);
string setOperation = GetSetOperationStatement(std, query);
string sql = String.Empty;
if (paging)
{
int begRow = ((query.es.PageNumber.Value - 1) * query.es.PageSize.Value) + 1;
int endRow = begRow + (query.es.PageSize.Value - 1);
// The WITH statement
sql += "WITH [withStatement] AS (";
sql += "SELECT " + select + ", ROW_NUMBER() OVER(" + orderBy + ") AS ESRN ";
sql += "FROM " + from + join + where + groupBy + ") ";
// The actual select
if (join.Length > 0 || groupBy.Length > 0 || query.es.Distinct)
{
sql += "SELECT * FROM [withStatement] ";
}
else
{
sql += "SELECT " + select + " FROM [withStatement] ";
}
sql += "WHERE ESRN BETWEEN " + begRow + " AND " + endRow;
sql += " ORDER BY ESRN ASC";
}
else
{
sql += "SELECT " + select + " FROM " + from + join + where + setOperation + groupBy + having + orderBy;
}
return(sql);
}
public static EfzCommand PrepareCommand(esDataRequest request)
{
esDynamicQuerySerializable query = request.DynamicQuery;
EfzCommand cmd = new EfzCommand();
int pindex = NextParamIndex(cmd);
string sql = BuildQuery(request, query, cmd, ref pindex);
cmd.CommandText = sql;
return(cmd);
}
protected static string GetOrderByStatement(StandardProviderParameters std, esDynamicQuerySerializable query)
{
string sql = String.Empty;
string comma = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (iQuery.InternalOrderByItems != null)
{
sql += " ORDER BY ";
foreach (esOrderByItem orderByItem in iQuery.InternalOrderByItems)
{
bool literal = false;
sql += comma;
string columnName = orderByItem.Expression.Column.Name;
if (columnName != null && columnName[0] == '<')
{
sql += columnName.Substring(1, columnName.Length - 2);
if (orderByItem.Direction == esOrderByDirection.Unassigned)
{
literal = true; // They must provide the DESC/ASC in the literal string
}
}
else
{
sql += GetExpressionColumn(std, query, orderByItem.Expression, false, false);
}
if (!literal)
{
if (orderByItem.Direction == esOrderByDirection.Ascending)
{
sql += " ASC";
}
else
{
sql += " DESC";
}
}
comma = ",";
}
}
return(sql);
}
protected static string BuildQuery(StandardProviderParameters std, esDynamicQuerySerializable query)
{
bool paging = false;
if (query.es.PageNumber.HasValue && query.es.PageSize.HasValue)
{
paging = true;
}
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string select = GetSelectStatement(std, query);
string from = GetFromStatement(std, query);
string join = GetJoinStatement(std, query);
string where = GetComparisonStatement(std, query, iQuery.InternalWhereItems, " WHERE ");
string groupBy = GetGroupByStatement(std, query);
string having = GetComparisonStatement(std, query, iQuery.InternalHavingItems, " HAVING ");
string orderBy = GetOrderByStatement(std, query);
string setOperation = GetSetOperationStatement(std, query);
string sql = String.Empty;
sql += "SELECT " + select + " FROM " + from + join + where + setOperation + groupBy + having + orderBy;
if (paging)
{
int begRow = ((query.es.PageNumber.Value - 1) * query.es.PageSize.Value);
sql += " LIMIT " + query.es.PageSize.ToString();
sql += " OFFSET " + begRow.ToString() + " ";
}
else if (query.es.Top >= 0)
{
sql += " LIMIT " + query.es.Top.ToString() + " ";
}
else if (iQuery.Skip.HasValue || iQuery.Take.HasValue)
{
if (iQuery.Take.HasValue)
{
sql += " LIMIT " + iQuery.Take.ToString() + " ";
}
if (iQuery.Skip.HasValue)
{
sql += " OFFSET " + iQuery.Skip.ToString() + " ";
}
}
return(sql);
}
/// <summary>
/// Used to describe the "where" conditions of the join itself
/// </summary>
/// <param name="items"></param>
/// <returns></returns>
public esDynamicQuerySerializable On(params object[] items)
{
if (this.data.WhereItems == null)
{
this.data.WhereItems = new List <esComparison>();
}
foreach (object item in items)
{
esComparison wi = item as esComparison;
if (wi != null)
{
if (wi.data.WhereExpression != null)
{
foreach (esComparison exp in wi.data.WhereExpression)
{
esDynamicQuerySerializable q = exp.Value as esDynamicQuerySerializable;
if (q != null)
{
IDynamicQuerySerializableInternal iQ = q as IDynamicQuerySerializableInternal;
iQ.HookupProviderMetadata(q);
}
}
this.data.WhereItems.AddRange(wi.data.WhereExpression);
}
else
{
this.data.WhereItems.Add(wi);
}
esDynamicQuerySerializable query = wi.Value as esDynamicQuerySerializable;
if (query != null)
{
IDynamicQuerySerializableInternal iQ = query as IDynamicQuerySerializableInternal;
iQ.HookupProviderMetadata(query);
}
}
else
{
throw new Exception("Unsupported Join Syntax");
}
}
return(this.parentQuery);
}
protected static string GetJoinStatement(StandardProviderParameters std, esDynamicQuerySerializable query)
{
string sql = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (iQuery.InternalJoinItems != null)
{
foreach (esJoinItem joinItem in iQuery.InternalJoinItems)
{
esJoinItem.esJoinItemData joinData = (esJoinItem.esJoinItemData)joinItem;
switch (joinData.JoinType)
{
case esJoinType.InnerJoin:
sql += " INNER JOIN ";
break;
case esJoinType.LeftJoin:
sql += " LEFT JOIN ";
break;
case esJoinType.RightJoin:
sql += " RIGHT JOIN ";
break;
case esJoinType.FullJoin:
sql += " FULL JOIN ";
break;
}
IDynamicQuerySerializableInternal iSubQuery = joinData.Query as IDynamicQuerySerializableInternal;
sql += Shared.CreateFullName(std.request, joinData.Query);
sql += " " + iSubQuery.JoinAlias;
if (query.es.WithNoLock == true)
{
sql += " WITH (NOLOCK)";
}
sql += " ON ";
sql += GetComparisonStatement(std, query, joinData.WhereItems, String.Empty);
}
}
return(sql);
}
protected static string BuildQuery(StandardProviderParameters std, esDynamicQuerySerializable query)
{
bool paging = false;
if (query.es.PageNumber.HasValue && query.es.PageSize.HasValue)
paging = true;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string select = GetSelectStatement(std, query);
string from = GetFromStatement(std, query);
string join = GetJoinStatement(std, query);
string where = GetComparisonStatement(std, query, iQuery.InternalWhereItems, " WHERE ");
string groupBy = GetGroupByStatement(std, query);
string having = GetComparisonStatement(std, query, iQuery.InternalHavingItems, " HAVING ");
string orderBy = GetOrderByStatement(std, query);
string setOperation = GetSetOperationStatement(std, query);
string sql = String.Empty;
sql += "SELECT " + select + " FROM " + from + join + where + setOperation + groupBy + having + orderBy;
if (paging)
{
int begRow = ((query.es.PageNumber.Value - 1) * query.es.PageSize.Value);
sql += " LIMIT " + query.es.PageSize.ToString();
sql += " OFFSET " + begRow.ToString() + " ";
}
else if (query.es.Top >= 0)
{
sql += " LIMIT " + query.es.Top.ToString() + " ";
}
else if (iQuery.Skip.HasValue || iQuery.Take.HasValue)
{
if (iQuery.Take.HasValue)
{
sql += " LIMIT " + iQuery.Take.ToString() + " ";
}
if (iQuery.Skip.HasValue)
{
sql += " OFFSET " + iQuery.Skip.ToString() + " ";
}
}
return sql;
}
protected static string GetFromStatement(StandardProviderParameters std, esDynamicQuerySerializable query)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string sql = String.Empty;
int joinCount = 0;
if (iQuery.InternalJoinItems != null && iQuery.InternalJoinItems.Count > 0)
{
joinCount = iQuery.InternalJoinItems.Count;
for (int i = 0; i < joinCount; i++)
{
sql += "(";
}
}
if (iQuery.InternalFromQuery == null)
{
sql += Shared.CreateFullName(query);
if (iQuery.JoinAlias != " ")
{
sql += " " + iQuery.JoinAlias;
}
}
else
{
IDynamicQuerySerializableInternal iSubQuery = iQuery.InternalFromQuery as IDynamicQuerySerializableInternal;
iSubQuery.IsInSubQuery = true;
sql += "(";
sql += BuildQuery(std, iQuery.InternalFromQuery);
sql += ")";
if (iSubQuery.SubQueryAlias != " ")
{
sql += " AS " + iSubQuery.SubQueryAlias;
}
iSubQuery.IsInSubQuery = false;
}
return(sql);
}
protected static string BuildQuery(StandardProviderParameters std, esDynamicQuerySerializable query)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string select = GetSelectStatement(std, query);
string from = GetFromStatement(std, query);
string join = GetJoinStatement(std, query);
string where = GetComparisonStatement(std, query, iQuery.InternalWhereItems, " WHERE ");
string groupBy = GetGroupByStatement(std, query);
string having = GetComparisonStatement(std, query, iQuery.InternalHavingItems, " HAVING ");
string orderBy = GetOrderByStatement(std, query);
string setOperation = GetSetOperationStatement(std, query);
string sql = "SELECT " + select + " FROM " + from + join + where + setOperation + groupBy + having + orderBy;
return sql;
}
private static string GetSubquerySearchCondition(esDynamicQuerySerializable query)
{
string searchCondition = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
switch (iQuery.SubquerySearchCondition)
{
case esSubquerySearchCondition.All: searchCondition = "ALL"; break;
case esSubquerySearchCondition.Any: searchCondition = "ANY"; break;
case esSubquerySearchCondition.Some: searchCondition = "SOME"; break;
}
return(searchCondition);
}
protected static string BuildQuery(esDataRequest request, esDynamicQuerySerializable query, EfzCommand cmd, ref int pindex)
{
bool paging = false;
if (query.es.PageNumber.HasValue && query.es.PageSize.HasValue)
{
paging = true;
}
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string select = GetSelectStatement(request, query, cmd, ref pindex);
string from = GetFromStatement(request, query, cmd, ref pindex);
string join = GetJoinStatement(request, query, cmd, ref pindex);
string where = GetComparisonStatement(request, query, iQuery.InternalWhereItems, " WHERE ", cmd, ref pindex);
string groupBy = GetGroupByStatement(request, query, cmd, ref pindex);
string having = GetComparisonStatement(request, query, iQuery.InternalHavingItems, " HAVING ", cmd, ref pindex);
string orderBy = GetOrderByStatement(request, query, cmd, ref pindex);
string setOperation = GetSetOperationStatement(request, query, cmd, ref pindex);
string sql = String.Empty;
if (paging)
{
int begRow = ((query.es.PageNumber.Value - 1) * query.es.PageSize.Value) + 1;
int endRow = begRow + (query.es.PageSize.Value - 1);
// The WITH statement
sql += "WITH [withStatement] AS (";
sql += "SELECT " + select + ", ROW_NUMBER() OVER(" + orderBy + ") AS ESRN ";
sql += "FROM " + from + join + where + groupBy + ") ";
sql += "SELECT * FROM [withStatement] ";
sql += "WHERE ESRN BETWEEN " + begRow + " AND " + endRow;
sql += " ORDER BY ESRN ASC";
}
else
{
sql += "SELECT " + select + " FROM " + from + join + where + setOperation + groupBy + having + orderBy;
}
return(sql);
}
protected static string BuildQuery(StandardProviderParameters std, esDynamicQuerySerializable query)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string select = GetSelectStatement(std, query);
string from = GetFromStatement(std, query);
string join = GetJoinStatement(std, query);
string where = GetComparisonStatement(std, query, iQuery.InternalWhereItems, " WHERE ");
string groupBy = GetGroupByStatement(std, query);
string having = GetComparisonStatement(std, query, iQuery.InternalHavingItems, " HAVING ");
string orderBy = GetOrderByStatement(std, query);
string setOperation = GetSetOperationStatement(std, query);
string sql = "SELECT " + select + " FROM " + from + join + where + setOperation + groupBy + having + orderBy;
return(sql);
}
protected static string BuildQuery(esDataRequest request, esDynamicQuerySerializable query, VistaDBCommand cmd, ref int pindex)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string select = GetSelectStatement(request, query, cmd, ref pindex);
string from = GetFromStatement(request, query, cmd, ref pindex);
string join = GetJoinStatement(request, query, cmd, ref pindex);
string where = GetComparisonStatement(request, query, iQuery.InternalWhereItems, " WHERE ", cmd, ref pindex);
string groupBy = GetGroupByStatement(request, query, cmd, ref pindex);
string having = GetComparisonStatement(request, query, iQuery.InternalHavingItems, " HAVING ", cmd, ref pindex);
string orderBy = GetOrderByStatement(request, query, cmd, ref pindex);
string setOperation = GetSetOperationStatement(request, query, cmd, ref pindex);
string sql = String.Empty;
sql += "SELECT " + select + " FROM " + from + join + where + setOperation + groupBy + having + orderBy;
return sql;
}
protected static string GetGroupByStatement(StandardProviderParameters std, esDynamicQuerySerializable query)
{
string sql = String.Empty;
string comma = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (iQuery.InternalGroupByItems != null)
{
sql += " GROUP BY ";
if (query.es.WithRollup)
{
sql += " ROLLUP(";
}
foreach (esGroupByItem groupBy in iQuery.InternalGroupByItems)
{
sql += comma;
string columnName = groupBy.Expression.Column.Name;
if (columnName != null && columnName[0] == '<')
{
sql += columnName.Substring(1, columnName.Length - 2);
}
else
{
sql += GetExpressionColumn(std, query, groupBy.Expression, false, false);
}
comma = ",";
}
if (query.es.WithRollup)
{
sql += ")";
}
}
return(sql);
}
protected static string BuildQuery(esDataRequest request, esDynamicQuerySerializable query, EfzCommand cmd, ref int pindex)
{
bool paging = false;
if (query.es.PageNumber.HasValue && query.es.PageSize.HasValue)
paging = true;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string select = GetSelectStatement(request, query, cmd, ref pindex);
string from = GetFromStatement(request, query, cmd, ref pindex);
string join = GetJoinStatement(request, query, cmd, ref pindex);
string where = GetComparisonStatement(request, query, iQuery.InternalWhereItems, " WHERE ", cmd, ref pindex);
string groupBy = GetGroupByStatement(request, query, cmd, ref pindex);
string having = GetComparisonStatement(request, query, iQuery.InternalHavingItems, " HAVING ", cmd, ref pindex);
string orderBy = GetOrderByStatement(request, query, cmd, ref pindex);
string setOperation = GetSetOperationStatement(request, query, cmd, ref pindex);
string sql = String.Empty;
if (paging)
{
int begRow = ((query.es.PageNumber.Value - 1) * query.es.PageSize.Value) + 1;
int endRow = begRow + (query.es.PageSize.Value - 1);
// The WITH statement
sql += "WITH [withStatement] AS (";
sql += "SELECT " + select + ", ROW_NUMBER() OVER(" + orderBy + ") AS ESRN ";
sql += "FROM " + from + join + where + groupBy + ") ";
sql += "SELECT * FROM [withStatement] ";
sql += "WHERE ESRN BETWEEN " + begRow + " AND " + endRow;
sql += " ORDER BY ESRN ASC";
}
else
{
sql += "SELECT " + select + " FROM " + from + join + where + setOperation + groupBy + having + orderBy;
}
return sql;
}
protected static string GetJoinStatement(esDataRequest request, esDynamicQuerySerializable query, VistaDBCommand cmd, ref int pindex)
{
string sql = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (iQuery.InternalJoinItems != null)
{
foreach (esJoinItem joinItem in iQuery.InternalJoinItems)
{
esJoinItem.esJoinItemData joinData = (esJoinItem.esJoinItemData)joinItem;
switch (joinData.JoinType)
{
case esJoinType.InnerJoin:
sql += " INNER JOIN ";
break;
case esJoinType.LeftJoin:
sql += " LEFT JOIN ";
break;
case esJoinType.RightJoin:
sql += " RIGHT JOIN ";
break;
case esJoinType.FullJoin:
sql += " FULL JOIN ";
break;
}
IDynamicQuerySerializableInternal iSubQuery = joinData.Query as IDynamicQuerySerializableInternal;
sql += Shared.CreateFullName((esProviderSpecificMetadata)iSubQuery.ProviderMetadata);
sql += " " + iSubQuery.JoinAlias + " ON ";
sql += GetComparisonStatement(request, query, joinData.WhereItems, String.Empty, cmd, ref pindex);
}
}
return(sql);
}
static public string CreateFullName(esDynamicQuerySerializable query)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
esProviderSpecificMetadata providerMetadata = iQuery.ProviderMetadata as esProviderSpecificMetadata;
string name = String.Empty;
name += Delimiters.TableOpen;
if (query.es.QuerySource != null)
{
name += query.es.QuerySource;
}
else
{
name += providerMetadata.Destination;
}
name += Delimiters.TableClose;
return(name);
}
protected static string BuildQuery(esDataRequest request, esDynamicQuerySerializable query, VistaDBCommand cmd, ref int pindex)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string select = GetSelectStatement(request, query, cmd, ref pindex);
string from = GetFromStatement(request, query, cmd, ref pindex);
string join = GetJoinStatement(request, query, cmd, ref pindex);
string where = GetComparisonStatement(request, query, iQuery.InternalWhereItems, " WHERE ", cmd, ref pindex);
string groupBy = GetGroupByStatement(request, query, cmd, ref pindex);
string having = GetComparisonStatement(request, query, iQuery.InternalHavingItems, " HAVING ", cmd, ref pindex);
string orderBy = GetOrderByStatement(request, query, cmd, ref pindex);
string setOperation = GetSetOperationStatement(request, query, cmd, ref pindex);
string sql = String.Empty;
sql += "SELECT " + select + " FROM " + from + join + where + setOperation + groupBy + having + orderBy;
return(sql);
}
protected static string GetFromStatement(esDataRequest request, esDynamicQuerySerializable query, EfzCommand cmd, ref int pindex)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string sql = String.Empty;
if (iQuery.InternalFromQuery == null)
{
sql = Shared.CreateFullName(request, query);
if (iQuery.JoinAlias != " ")
{
sql += " " + iQuery.JoinAlias;
}
if (query.es.WithNoLock == true)
{
sql += " WITH (NOLOCK)";
}
}
else
{
IDynamicQuerySerializableInternal iSubQuery = iQuery.InternalFromQuery as IDynamicQuerySerializableInternal;
iSubQuery.IsInSubQuery = true;
sql += "(";
sql += BuildQuery(request, iQuery.InternalFromQuery, cmd, ref pindex);
sql += ")";
if (iSubQuery.SubQueryAlias != " ")
{
sql += " AS " + iSubQuery.SubQueryAlias;
}
iSubQuery.IsInSubQuery = false;
}
return(sql);
}
protected static string GetFromStatement(StandardProviderParameters std, esDynamicQuerySerializable query)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
string sql = String.Empty;
if (iQuery.InternalFromQuery == null)
{
sql = Shared.CreateFullName(std.request, query);
if (iQuery.JoinAlias != " ")
{
sql += " " + iQuery.JoinAlias;
}
if (query.es.WithNoLock == true)
{
sql += " WITH (NOLOCK)";
}
}
else
{
IDynamicQuerySerializableInternal iSubQuery = iQuery.InternalFromQuery as IDynamicQuerySerializableInternal;
iSubQuery.IsInSubQuery = true;
sql += "(";
sql += BuildQuery(std, iQuery.InternalFromQuery);
sql += ")";
if (iSubQuery.SubQueryAlias != " ")
{
sql += " AS " + iSubQuery.SubQueryAlias;
}
iSubQuery.IsInSubQuery = false;
}
return(sql);
}
protected static string GetExpressionColumn(StandardProviderParameters std, esDynamicQuerySerializable query, esExpression expression, bool inExpression, bool useAlias)
{
string sql = String.Empty;
if (expression.CaseWhen != null)
{
return(GetCaseWhenThenEnd(std, query, expression.CaseWhen));
}
if (expression.HasMathmaticalExpression)
{
sql += GetMathmaticalExpressionColumn(std, query, expression.MathmaticalExpression);
}
else
{
sql += GetColumnName(expression.Column);
}
if (expression.SubOperators != null)
{
if (expression.Column.Distinct)
{
sql = BuildSubOperationsSql(std, "DISTINCT " + sql, expression.SubOperators);
}
else
{
sql = BuildSubOperationsSql(std, sql, expression.SubOperators);
}
}
if (!inExpression && useAlias)
{
if (expression.SubOperators != null || expression.Column.HasAlias)
{
sql += " AS " + Delimiters.StringOpen + expression.Column.Alias + Delimiters.StringClose;
}
}
return(sql);
}
public esCase When(esComparison comparison)
{
this.WhenItem = new esExpressionOrComparison();
this.WhenItem.Comparisons = new List <esComparison>();
if (comparison != null)
{
if (comparison.data.WhereExpression != null)
{
foreach (esComparison exp in comparison.data.WhereExpression)
{
esDynamicQuerySerializable q = exp.Value as esDynamicQuerySerializable;
if (q != null)
{
IDynamicQuerySerializableInternal iQ = q as IDynamicQuerySerializableInternal;
iQ.HookupProviderMetadata(q);
}
}
this.WhenItem.Comparisons.AddRange(comparison.data.WhereExpression);
}
else
{
this.WhenItem.Comparisons.Add(comparison);
}
esDynamicQuerySerializable query = comparison.Value as esDynamicQuerySerializable;
if (query != null)
{
IDynamicQuerySerializableInternal iQ = query as IDynamicQuerySerializableInternal;
iQ.HookupProviderMetadata(query);
}
}
return(this);
}
protected static string GetGroupByStatement(esDataRequest request, esDynamicQuerySerializable query, VistaDBCommand cmd, ref int pindex)
{
string sql = String.Empty;
string comma = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (iQuery.InternalGroupByItems != null)
{
sql += " GROUP BY ";
foreach (esGroupByItem groupBy in iQuery.InternalGroupByItems)
{
sql += comma;
string columnName = groupBy.Expression.Column.Name;
if (columnName != null && columnName[0] == '<')
{
sql += columnName.Substring(1, columnName.Length - 2);
}
else
{
sql += GetExpressionColumn(groupBy.Expression, false, false);
}
comma = ",";
}
if (query.es.WithRollup)
{
sql += " WITH ROLLUP";
}
}
return(sql);
}
protected static string GetSetOperationStatement(esDataRequest request, esDynamicQuerySerializable query, VistaDBCommand cmd, ref int pindex)
{
string sql = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (iQuery.InternalSetOperations != null)
{
foreach (esSetOperation setOperation in iQuery.InternalSetOperations)
{
switch (setOperation.SetOperationType)
{
case esSetOperationType.Union: sql += " UNION "; break;
case esSetOperationType.UnionAll: sql += " UNION ALL "; break;
case esSetOperationType.Intersect: sql += " INTERSECT "; break;
case esSetOperationType.Except: sql += " EXCEPT "; break;
}
sql += BuildQuery(request, setOperation.Query, cmd, ref pindex);
}
}
return sql;
}
protected static string GetMathmaticalExpressionColumn(StandardProviderParameters std, esDynamicQuerySerializable query, esMathmaticalExpression mathmaticalExpression)
{
string sql = "(";
if (mathmaticalExpression.ItemFirst)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem1, true, true);
switch (mathmaticalExpression.Operator)
{
case esArithmeticOperator.Add: sql += "+"; break;
case esArithmeticOperator.Subtract: sql += "-"; break;
case esArithmeticOperator.Multiply: sql += "*"; break;
case esArithmeticOperator.Divide: sql += "/"; break;
case esArithmeticOperator.Modulo: sql += "%"; break;
}
if (mathmaticalExpression.SelectItem2 != null)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem2, true, true);
}
else
{
switch (mathmaticalExpression.LiteralType)
{
case esSystemType.String:
sql += Delimiters.StringOpen + (string)mathmaticalExpression.Literal + Delimiters.StringClose;
break;
case esSystemType.DateTime:
sql += Delimiters.StringOpen + ((DateTime)(mathmaticalExpression.Literal)).ToShortDateString() + Delimiters.StringClose;
break;
default:
sql += Convert.ToString(mathmaticalExpression.Literal);
break;
}
}
}
else
{
if (mathmaticalExpression.SelectItem2 != null)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem2, true, true);
}
else
{
switch (mathmaticalExpression.LiteralType)
{
case esSystemType.String:
sql += Delimiters.StringOpen + (string)mathmaticalExpression.Literal + Delimiters.StringClose;
break;
case esSystemType.DateTime:
sql += Delimiters.StringOpen + ((DateTime)(mathmaticalExpression.Literal)).ToShortDateString() + Delimiters.StringClose;
break;
default:
sql += Convert.ToString(mathmaticalExpression.Literal);
break;
}
}
switch (mathmaticalExpression.Operator)
{
case esArithmeticOperator.Add: sql += "+"; break;
case esArithmeticOperator.Subtract: sql += "-"; break;
case esArithmeticOperator.Multiply: sql += "*"; break;
case esArithmeticOperator.Divide: sql += "/"; break;
case esArithmeticOperator.Modulo: sql += "%"; break;
}
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem1, true, true);
}
sql += ")";
return(sql);
}
protected static string GetSelectStatement(StandardProviderParameters std, esDynamicQuerySerializable query)
{
string sql = String.Empty;
string comma = String.Empty;
bool selectAll = true;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (query.es.Distinct)
{
sql += " DISTINCT ";
}
if (query.es.Top >= 0)
{
sql += " TOP " + query.es.Top.ToString() + " ";
}
if (iQuery.InternalSelectColumns != null)
{
selectAll = false;
foreach (esExpression expressionItem in iQuery.InternalSelectColumns)
{
if (expressionItem.Query != null)
{
IDynamicQuerySerializableInternal iSubQuery = expressionItem.Query as IDynamicQuerySerializableInternal;
sql += comma;
if (iSubQuery.SubQueryAlias == string.Empty)
{
sql += iSubQuery.JoinAlias + ".*";
}
else
{
iSubQuery.IsInSubQuery = true;
sql += " (" + BuildQuery(std, expressionItem.Query as esDynamicQuerySerializable) + ") AS " + iSubQuery.SubQueryAlias;
iSubQuery.IsInSubQuery = false;
}
comma = ",";
}
else
{
sql += comma;
string columnName = expressionItem.Column.Name;
if (columnName != null && columnName[0] == '<')
{
sql += columnName.Substring(1, columnName.Length - 2);
}
else
{
sql += GetExpressionColumn(std, query, expressionItem, false, true);
}
comma = ",";
}
}
sql += " ";
}
if (query.es.CountAll)
{
selectAll = false;
sql += comma;
sql += "COUNT(*)";
if (query.es.CountAllAlias != null)
{
// Need DBMS string delimiter here
sql += " AS " + Delimiters.StringOpen + query.es.CountAllAlias + Delimiters.StringClose;
}
}
if (selectAll)
{
sql += "*";
}
return(sql);
}
protected static string GetComparisonStatement(StandardProviderParameters std, esDynamicQuerySerializable query, List <esComparison> items, string prefix)
{
string sql = String.Empty;
string comma = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
//=======================================
// WHERE
//=======================================
if (items != null)
{
sql += prefix;
DbType paramType = DbType.String;
string compareTo = String.Empty;
foreach (esComparison comparisonItem in items)
{
paramType = DbType.String;
esComparison.esComparisonData comparisonData = (esComparison.esComparisonData)comparisonItem;
esDynamicQuerySerializable subQuery = null;
bool requiresParam = true;
bool needsStringParameter = false;
std.needsIntegerParameter = false;
if (comparisonData.IsParenthesis)
{
if (comparisonData.Parenthesis == esParenthesis.Open)
{
sql += "(";
}
else
{
sql += ")";
}
continue;
}
if (comparisonData.IsConjunction)
{
switch (comparisonData.Conjunction)
{
case esConjunction.And: sql += " AND "; break;
case esConjunction.Or: sql += " OR "; break;
case esConjunction.AndNot: sql += " AND NOT "; break;
case esConjunction.OrNot: sql += " OR NOT "; break;
}
continue;
}
Dictionary <string, SqlParameter> types = null;
if (comparisonData.Column.Query != null)
{
IDynamicQuerySerializableInternal iLocalQuery = comparisonData.Column.Query as IDynamicQuerySerializableInternal;
types = Cache.GetParameters(iLocalQuery.DataID, (esProviderSpecificMetadata)iLocalQuery.ProviderMetadata, (esColumnMetadataCollection)iLocalQuery.Columns);
}
if (comparisonData.IsLiteral)
{
if (comparisonData.Column.Name[0] == '<')
{
sql += comparisonData.Column.Name.Substring(1, comparisonData.Column.Name.Length - 2);
}
else
{
sql += comparisonData.Column.Name;
}
continue;
}
if (comparisonData.ComparisonColumn.Name == null)
{
subQuery = comparisonData.Value as esDynamicQuerySerializable;
if (subQuery == null)
{
if (comparisonData.Column.Name != null)
{
IDynamicQuerySerializableInternal iColQuery = comparisonData.Column.Query as IDynamicQuerySerializableInternal;
esColumnMetadataCollection columns = (esColumnMetadataCollection)iColQuery.Columns;
compareTo = Delimiters.Param + columns[comparisonData.Column.Name].PropertyName + (++std.pindex).ToString();
}
else
{
compareTo = Delimiters.Param + "Expr" + (++std.pindex).ToString();
}
}
else
{
// It's a sub query
compareTo = GetSubquerySearchCondition(subQuery) + " (" + BuildQuery(std, subQuery) + ") ";
requiresParam = false;
}
}
else
{
compareTo = GetColumnName(comparisonData.ComparisonColumn);
requiresParam = false;
}
switch (comparisonData.Operand)
{
case esComparisonOperand.Exists:
sql += " EXISTS" + compareTo;
break;
case esComparisonOperand.NotExists:
sql += " NOT EXISTS" + compareTo;
break;
//-----------------------------------------------------------
// Comparison operators, left side vs right side
//-----------------------------------------------------------
case esComparisonOperand.Equal:
if (comparisonData.ItemFirst)
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " = " + compareTo;
}
else
{
sql += compareTo + " = " + ApplyWhereSubOperations(std, query, comparisonData);
}
break;
case esComparisonOperand.NotEqual:
if (comparisonData.ItemFirst)
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " <> " + compareTo;
}
else
{
sql += compareTo + " <> " + ApplyWhereSubOperations(std, query, comparisonData);
}
break;
case esComparisonOperand.GreaterThan:
if (comparisonData.ItemFirst)
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " > " + compareTo;
}
else
{
sql += compareTo + " > " + ApplyWhereSubOperations(std, query, comparisonData);
}
break;
case esComparisonOperand.LessThan:
if (comparisonData.ItemFirst)
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " < " + compareTo;
}
else
{
sql += compareTo + " < " + ApplyWhereSubOperations(std, query, comparisonData);
}
break;
case esComparisonOperand.LessThanOrEqual:
if (comparisonData.ItemFirst)
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " <= " + compareTo;
}
else
{
sql += compareTo + " <= " + ApplyWhereSubOperations(std, query, comparisonData);
}
break;
case esComparisonOperand.GreaterThanOrEqual:
if (comparisonData.ItemFirst)
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " >= " + compareTo;
}
else
{
sql += compareTo + " >= " + ApplyWhereSubOperations(std, query, comparisonData);
}
break;
case esComparisonOperand.Like:
string esc = comparisonData.LikeEscape.ToString();
if (String.IsNullOrEmpty(esc) || esc == "\0")
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " LIKE " + compareTo;
needsStringParameter = true;
}
else
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " LIKE " + compareTo;
sql += " ESCAPE '" + esc + "'";
needsStringParameter = true;
}
break;
case esComparisonOperand.NotLike:
esc = comparisonData.LikeEscape.ToString();
if (String.IsNullOrEmpty(esc) || esc == "\0")
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " NOT LIKE " + compareTo;
needsStringParameter = true;
}
else
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " NOT LIKE " + compareTo;
sql += " ESCAPE '" + esc + "'";
needsStringParameter = true;
}
break;
case esComparisonOperand.Contains:
sql += " CONTAINS(" + GetColumnName(comparisonData.Column) + ", " + compareTo + ")";
paramType = DbType.AnsiStringFixedLength;
needsStringParameter = true;
break;
case esComparisonOperand.IsNull:
sql += ApplyWhereSubOperations(std, query, comparisonData) + " IS NULL";
requiresParam = false;
break;
case esComparisonOperand.IsNotNull:
sql += ApplyWhereSubOperations(std, query, comparisonData) + " IS NOT NULL";
requiresParam = false;
break;
case esComparisonOperand.In:
case esComparisonOperand.NotIn:
{
if (subQuery != null)
{
// They used a subquery for In or Not
sql += ApplyWhereSubOperations(std, query, comparisonData);
sql += (comparisonData.Operand == esComparisonOperand.In) ? " IN" : " NOT IN";
sql += compareTo;
}
else
{
comma = String.Empty;
if (comparisonData.Operand == esComparisonOperand.In)
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " IN (";
}
else
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " NOT IN (";
}
foreach (object oin in comparisonData.Values)
{
string str = oin as string;
if (str != null)
{
// STRING
sql += comma + Delimiters.StringOpen + str + Delimiters.StringClose;
comma = ",";
}
else if (null != oin as System.Collections.IEnumerable)
{
// LIST OR COLLECTION OF SOME SORT
System.Collections.IEnumerable enumer = oin as System.Collections.IEnumerable;
if (enumer != null)
{
System.Collections.IEnumerator iter = enumer.GetEnumerator();
while (iter.MoveNext())
{
object o = iter.Current;
string soin = o as string;
if (soin != null)
{
sql += comma + Delimiters.StringOpen + soin + Delimiters.StringClose;
}
else
{
sql += comma + Convert.ToString(o);
}
comma = ",";
}
}
}
else
{
// NON STRING OR LIST
sql += comma + Convert.ToString(oin);
comma = ",";
}
}
sql += ")";
requiresParam = false;
}
}
break;
case esComparisonOperand.Between:
SqlCommand sqlCommand = std.cmd as SqlCommand;
sql += ApplyWhereSubOperations(std, query, comparisonData) + " BETWEEN ";
sql += compareTo;
if (comparisonData.ComparisonColumn.Name == null)
{
sqlCommand.Parameters.AddWithValue(compareTo, comparisonData.BetweenBegin);
}
if (comparisonData.ComparisonColumn2.Name == null)
{
IDynamicQuerySerializableInternal iColQuery = comparisonData.Column.Query as IDynamicQuerySerializableInternal;
esColumnMetadataCollection columns = (esColumnMetadataCollection)iColQuery.Columns;
compareTo = Delimiters.Param + columns[comparisonData.Column.Name].PropertyName + (++std.pindex).ToString();
sql += " AND " + compareTo;
sqlCommand.Parameters.AddWithValue(compareTo, comparisonData.BetweenEnd);
}
else
{
sql += " AND " + Delimiters.ColumnOpen + comparisonData.ComparisonColumn2 + Delimiters.ColumnClose;
}
requiresParam = false;
break;
}
if (requiresParam)
{
SqlParameter p;
if (comparisonData.Column.Name != null)
{
p = types[comparisonData.Column.Name];
p = Cache.CloneParameter(p);
p.ParameterName = compareTo;
p.Value = comparisonData.Value;
if (needsStringParameter)
{
p.DbType = paramType;
}
else if (std.needsIntegerParameter)
{
p.DbType = DbType.Int32;
}
}
else
{
p = new SqlParameter(compareTo, comparisonData.Value);
}
std.cmd.Parameters.Add(p);
}
}
}
return(sql);
}
protected static string ApplyWhereSubOperations(StandardProviderParameters std, esDynamicQuerySerializable query, esComparison.esComparisonData comparisonData)
{
string sql = string.Empty;
if (comparisonData.HasExpression)
{
sql += GetMathmaticalExpressionColumn(std, query, comparisonData.Expression);
if (comparisonData.SubOperators != null && comparisonData.SubOperators.Count > 0)
{
sql = BuildSubOperationsSql(std, sql, comparisonData.SubOperators);
}
return sql;
}
string delimitedColumnName = GetColumnName(comparisonData.Column);
if (comparisonData.SubOperators != null)
{
sql = BuildSubOperationsSql(std, delimitedColumnName, comparisonData.SubOperators);
}
else
{
sql = delimitedColumnName;
}
return sql;
}
static public string CreateFullName(esDynamicQuerySerializable query)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
esProviderSpecificMetadata providerMetadata = iQuery.ProviderMetadata as esProviderSpecificMetadata;
string name = String.Empty;
name += Delimiters.TableOpen;
if (query.es.QuerySource != null)
name += query.es.QuerySource;
else
name += providerMetadata.Destination;
name += Delimiters.TableClose;
return name;
}
protected static string GetJoinStatement(esDataRequest request, esDynamicQuerySerializable query, VistaDBCommand cmd, ref int pindex)
{
string sql = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (iQuery.InternalJoinItems != null)
{
foreach (esJoinItem joinItem in iQuery.InternalJoinItems)
{
esJoinItem.esJoinItemData joinData = (esJoinItem.esJoinItemData)joinItem;
switch (joinData.JoinType)
{
case esJoinType.InnerJoin:
sql += " INNER JOIN ";
break;
case esJoinType.LeftJoin:
sql += " LEFT JOIN ";
break;
case esJoinType.RightJoin:
sql += " RIGHT JOIN ";
break;
case esJoinType.FullJoin:
sql += " FULL JOIN ";
break;
}
IDynamicQuerySerializableInternal iSubQuery = joinData.Query as IDynamicQuerySerializableInternal;
sql += Shared.CreateFullName((esProviderSpecificMetadata)iSubQuery.ProviderMetadata);
sql += " " + iSubQuery.JoinAlias + " ON ";
sql += GetComparisonStatement(request, query, joinData.WhereItems, String.Empty, cmd, ref pindex);
}
}
return sql;
}
protected static string GetCaseWhenThenEnd(StandardProviderParameters std, esDynamicQuerySerializable query, esCase caseWhenThen)
{
string sql = string.Empty;
EntitySpaces.DynamicQuery.esCase.esSimpleCaseData caseStatement = caseWhenThen;
esColumnItem column = caseStatement.QueryItem;
sql += Delimiters.ColumnOpen + column.Alias + Delimiters.ColumnClose + " = ";
sql += "CASE ";
List<esComparison> list = new List<esComparison>();
foreach (EntitySpaces.DynamicQuery.esCase.esSimpleCaseData.esCaseClause caseClause in caseStatement.Cases)
{
sql += " WHEN ";
if (!caseClause.When.IsExpression)
{
sql += GetComparisonStatement(std, query, caseClause.When.Comparisons, string.Empty);
}
else
{
if (!caseClause.When.Expression.IsLiteralValue)
{
sql += GetExpressionColumn(std, query, caseClause.When.Expression, false, true);
}
else
{
if (caseClause.When.Expression.LiteralValue is string)
{
sql += Delimiters.StringOpen + caseClause.When.Expression.LiteralValue + Delimiters.StringClose;
}
else
{
sql += Convert.ToString(caseClause.When.Expression.LiteralValue);
}
}
}
sql += " THEN ";
if (!caseClause.Then.IsLiteralValue)
{
sql += GetExpressionColumn(std, query, caseClause.Then, false, true);
}
else
{
if (caseClause.Then.LiteralValue is string)
{
sql += Delimiters.StringOpen + caseClause.Then.LiteralValue + Delimiters.StringClose;
}
else
{
sql += Convert.ToString(caseClause.Then.LiteralValue);
}
}
}
if (caseStatement.Else != null)
{
sql += " ELSE ";
if (!caseStatement.Else.IsLiteralValue)
{
sql += GetExpressionColumn(std, query, caseStatement.Else, false, true);
}
else
{
if (caseStatement.Else.LiteralValue is string)
{
sql += Delimiters.StringOpen + caseStatement.Else.LiteralValue + Delimiters.StringClose;
}
else
{
sql += Convert.ToString(caseStatement.Else.LiteralValue);
}
}
}
sql += " END ";
return sql;
}
/// <summary>
/// The Constructor
/// </summary>
public esCase(esDynamicQuerySerializable query, esQueryItem queryItem)
{
this.data.Query = query;
this.data.QueryItem = queryItem;
}
/// <summary>
/// The Constructor
/// </summary>
public esCase(esDynamicQuerySerializable query)
{
this.data.Query = query;
}
protected static string GetMathmaticalExpressionColumn(StandardProviderParameters std, esDynamicQuerySerializable query, esMathmaticalExpression mathmaticalExpression)
{
bool isConcat = false;
string sql = "(";
if (mathmaticalExpression.ItemFirst)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem1, true, false);
sql += esArithmeticOperatorToString(mathmaticalExpression, out isConcat);
if (mathmaticalExpression.SelectItem2 != null)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem2, true, false);
}
else
{
sql += GetMathmaticalExpressionLiteralType(std, mathmaticalExpression);
}
}
else
{
if (mathmaticalExpression.SelectItem2 != null)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem2, true, true);
}
else
{
sql += GetMathmaticalExpressionLiteralType(std, mathmaticalExpression);
}
sql += esArithmeticOperatorToString(mathmaticalExpression, out isConcat);
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem1, true, false);
}
sql += ")";
if (isConcat)
{
sql = "CONCAT(" + sql.Substring(1, sql.Length - 2) + ")";
}
return sql;
}
protected static string ApplyWhereSubOperations(StandardProviderParameters std, esDynamicQuerySerializable query, esComparison.esComparisonData comparisonData)
{
string sql = string.Empty;
string delimitedColumnName = GetColumnName(comparisonData.Column);
if (comparisonData.SubOperators != null)
{
sql = BuildSubOperationsSql(std, delimitedColumnName, comparisonData.SubOperators);
}
else
{
sql = delimitedColumnName;
}
return sql;
}
/// <summary>
/// The Constructor
/// </summary>
public esCase(esDynamicQuerySerializable query, esQueryItem queryItem)
{
this.data.Query = query;
this.data.QueryItem = queryItem;
}
protected static string GetSetOperationStatement(StandardProviderParameters std, esDynamicQuerySerializable query)
{
string sql = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (iQuery.InternalSetOperations != null)
{
foreach (esSetOperation setOperation in iQuery.InternalSetOperations)
{
switch (setOperation.SetOperationType)
{
case esSetOperationType.Union: sql += " UNION "; break;
case esSetOperationType.UnionAll: sql += " UNION ALL "; break;
case esSetOperationType.Intersect: sql += " INTERSECT "; break;
case esSetOperationType.Except: sql += " EXCEPT "; break;
}
sql += BuildQuery(std, setOperation.Query);
}
}
return sql;
}
private static string GetSubquerySearchCondition(esDynamicQuerySerializable query)
{
string searchCondition = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
switch (iQuery.SubquerySearchCondition)
{
case esSubquerySearchCondition.All: searchCondition = "ALL"; break;
case esSubquerySearchCondition.Any: searchCondition = "ANY"; break;
case esSubquerySearchCondition.Some: searchCondition = "SOME"; break;
}
return searchCondition;
}
protected static string GetExpressionColumn(StandardProviderParameters std, esDynamicQuerySerializable query, esExpression expression, bool inExpression, bool useAlias)
{
string sql = String.Empty;
if (expression.CaseWhen != null)
{
return GetCaseWhenThenEnd(std, query, expression.CaseWhen);
}
if (expression.HasMathmaticalExpression)
{
sql += GetMathmaticalExpressionColumn(std, query, expression.MathmaticalExpression);
}
else
{
sql += GetColumnName(expression.Column);
}
if (expression.SubOperators != null)
{
if (expression.Column.Distinct)
{
sql = BuildSubOperationsSql(std, "DISTINCT " + sql, expression.SubOperators);
}
else
{
sql = BuildSubOperationsSql(std, sql, expression.SubOperators);
}
}
if (!inExpression && useAlias)
{
if (expression.SubOperators != null || expression.Column.HasAlias)
{
sql += " AS " + Delimiters.StringOpen + expression.Column.Alias + Delimiters.StringClose;
}
}
return sql;
}
protected static string GetSelectStatement(StandardProviderParameters std, esDynamicQuerySerializable query)
{
string sql = String.Empty;
string comma = String.Empty;
bool selectAll = true;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (query.es.Distinct) sql += " DISTINCT ";
if (query.es.Top >= 0) sql += " TOP " + query.es.Top.ToString() + " ";
if (iQuery.InternalSelectColumns != null)
{
selectAll = false;
foreach (esExpression expressionItem in iQuery.InternalSelectColumns)
{
if (expressionItem.Query != null)
{
IDynamicQuerySerializableInternal iSubQuery = expressionItem.Query as IDynamicQuerySerializableInternal;
sql += comma;
if (iSubQuery.SubQueryAlias == string.Empty)
{
sql += iSubQuery.JoinAlias + ".*";
}
else
{
iSubQuery.IsInSubQuery = true;
sql += " (" + BuildQuery(std, expressionItem.Query as esDynamicQuerySerializable) + ") AS " + iSubQuery.SubQueryAlias;
iSubQuery.IsInSubQuery = false;
}
comma = ",";
}
else
{
sql += comma;
string columnName = expressionItem.Column.Name;
if (columnName != null && columnName[0] == '<')
sql += columnName.Substring(1, columnName.Length - 2);
else
sql += GetExpressionColumn(std, query, expressionItem, false, true);
comma = ",";
}
}
sql += " ";
}
if (query.es.CountAll)
{
selectAll = false;
sql += comma;
sql += "COUNT(*)";
if (query.es.CountAllAlias != null)
{
// Need DBMS string delimiter here
sql += " AS " + Delimiters.StringOpen + query.es.CountAllAlias + Delimiters.StringClose;
}
}
if (selectAll)
{
sql += "*";
}
return sql;
}
protected static string GetMathmaticalExpressionColumn(StandardProviderParameters std, esDynamicQuerySerializable query, esMathmaticalExpression mathmaticalExpression)
{
string sql = "(";
if (mathmaticalExpression.ItemFirst)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem1, true, true);
sql += esArithmeticOperatorToString(mathmaticalExpression.Operator);
if (mathmaticalExpression.SelectItem2 != null)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem2, true, true);
}
else
{
sql += GetMathmaticalExpressionLiteralType(std, mathmaticalExpression);
}
}
else
{
if (mathmaticalExpression.SelectItem2 != null)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem2, true, true);
}
else
{
sql += GetMathmaticalExpressionLiteralType(std, mathmaticalExpression);
}
sql += esArithmeticOperatorToString(mathmaticalExpression.Operator);
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem1, true, true);
}
sql += ")";
return sql;
}
protected static string GetJoinStatement(StandardProviderParameters std, esDynamicQuerySerializable query)
{
string sql = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (iQuery.InternalJoinItems != null)
{
foreach (esJoinItem joinItem in iQuery.InternalJoinItems)
{
esJoinItem.esJoinItemData joinData = (esJoinItem.esJoinItemData)joinItem;
switch (joinData.JoinType)
{
case esJoinType.InnerJoin:
sql += " INNER JOIN ";
break;
case esJoinType.LeftJoin:
sql += " LEFT JOIN ";
break;
case esJoinType.RightJoin:
sql += " RIGHT JOIN ";
break;
case esJoinType.FullJoin:
sql += " FULL JOIN ";
break;
}
IDynamicQuerySerializableInternal iSubQuery = joinData.Query as IDynamicQuerySerializableInternal;
sql += Shared.CreateFullName(std.request, joinData.Query);
sql += " " + iSubQuery.JoinAlias;
if (query.es.WithNoLock == true)
{
sql += " WITH (NOLOCK)";
}
sql += " ON ";
sql += GetComparisonStatement(std, query, joinData.WhereItems, String.Empty);
}
}
return sql;
}
/// <summary>
///
/// </summary>
private void AssignProviderMetadata(esDynamicQuerySerializable query, List <esDynamicQuerySerializable> beenThere)
{
if (beenThere.Contains(query))
{
return;
}
beenThere.Add(query);
esDynamicQuery theQuery = query as esDynamicQuery;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (theQuery != null)
{
esConnection conn = theQuery.es2.Connection;
if (iQuery.ProviderMetadata == null)
{
esProviderSpecificMetadata providerMetadata = theQuery.Meta.GetProviderMetadata(conn.ProviderMetadataKey);
iQuery.DataID = theQuery.Meta.DataID;
iQuery.Columns = theQuery.Meta.Columns;
iQuery.ProviderMetadata = providerMetadata;
}
iQuery.Catalog = conn.Catalog;
iQuery.Schema = conn.Schema;
}
// This code is for proxies as they are unable to work with column and provider metadata
// until serialized back to the server
if (iQuery.SelectAll)
{
foreach (esColumnMetadata col in (esColumnMetadataCollection)iQuery.Columns)
{
esQueryItem item = new esQueryItem(this, col.Name, col.esType);
query.Select(item);
}
}
else
{
List <esQueryItem> columns = iQuery.SelectAllExcept;
if (columns != null)
{
foreach (esColumnMetadata col in (esColumnMetadataCollection)iQuery.Columns)
{
bool found = false;
for (int i = 0; i < columns.Count; i++)
{
if (col.Name == (string)columns[i])
{
found = true;
break;
}
}
if (found)
{
continue;
}
esExpression item = new esQueryItem(this, col.Name, col.esType);
query.Select(item);
}
}
}
foreach (esDynamicQuerySerializable subQuery in iQuery.queries.Values)
{
AssignProviderMetadata(subQuery, beenThere);
}
if (iQuery.InternalSetOperations != null)
{
foreach (esSetOperation setOperation in iQuery.InternalSetOperations)
{
AssignProviderMetadata(setOperation.Query, beenThere);
}
}
}
protected static string GetSetOperationStatement(StandardProviderParameters std, esDynamicQuerySerializable query)
{
string sql = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (iQuery.InternalSetOperations != null)
{
foreach (esSetOperation setOperation in iQuery.InternalSetOperations)
{
switch (setOperation.SetOperationType)
{
case esSetOperationType.Union: sql += " UNION "; break;
case esSetOperationType.UnionAll: sql += " UNION ALL "; break;
case esSetOperationType.Intersect: sql += " INTERSECT "; break;
case esSetOperationType.Except: sql += " EXCEPT "; break;
}
sql += BuildQuery(std, setOperation.Query);
}
}
return(sql);
}
static public string CreateFullName(esDataRequest request, esDynamicQuerySerializable query)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
esProviderSpecificMetadata providerMetadata = iQuery.ProviderMetadata as esProviderSpecificMetadata;
string name = String.Empty;
string catalog = iQuery.Catalog ?? request.Catalog ?? providerMetadata.Catalog;
string schema = iQuery.Schema ?? request.Schema ?? providerMetadata.Schema;
if (catalog != null && schema != null)
{
name += Delimiters.TableOpen + catalog + Delimiters.TableClose + ".";
}
if (schema != null)
{
name += Delimiters.TableOpen + schema + Delimiters.TableClose + ".";
}
name += Delimiters.TableOpen;
if (query.es.QuerySource != null)
name += query.es.QuerySource;
else
name += providerMetadata.Destination;
name += Delimiters.TableClose;
return name;
}
protected static string GetCaseWhenThenEnd(StandardProviderParameters std, esDynamicQuerySerializable query, esCase caseWhenThen)
{
string sql = string.Empty;
EntitySpaces.DynamicQuery.esCase.esSimpleCaseData caseStatement = caseWhenThen;
esColumnItem column = caseStatement.QueryItem;
sql += Delimiters.ColumnOpen + column.Alias + Delimiters.ColumnClose + " = ";
sql += "CASE ";
List <esComparison> list = new List <esComparison>();
foreach (EntitySpaces.DynamicQuery.esCase.esSimpleCaseData.esCaseClause caseClause in caseStatement.Cases)
{
sql += " WHEN ";
if (!caseClause.When.IsExpression)
{
sql += GetComparisonStatement(std, query, caseClause.When.Comparisons, string.Empty);
}
else
{
if (!caseClause.When.Expression.IsLiteralValue)
{
sql += GetExpressionColumn(std, query, caseClause.When.Expression, false, true);
}
else
{
if (caseClause.When.Expression.LiteralValue is string)
{
sql += Delimiters.StringOpen + caseClause.When.Expression.LiteralValue + Delimiters.StringClose;
}
else
{
sql += Convert.ToString(caseClause.When.Expression.LiteralValue);
}
}
}
sql += " THEN ";
if (!caseClause.Then.IsLiteralValue)
{
sql += GetExpressionColumn(std, query, caseClause.Then, false, true);
}
else
{
if (caseClause.Then.LiteralValue is string)
{
sql += Delimiters.StringOpen + caseClause.Then.LiteralValue + Delimiters.StringClose;
}
else
{
sql += Convert.ToString(caseClause.Then.LiteralValue);
}
}
}
if (caseStatement.Else != null)
{
sql += " ELSE ";
if (!caseStatement.Else.IsLiteralValue)
{
sql += GetExpressionColumn(std, query, caseStatement.Else, false, true);
}
else
{
if (caseStatement.Else.LiteralValue is string)
{
sql += Delimiters.StringOpen + caseStatement.Else.LiteralValue + Delimiters.StringClose;
}
else
{
sql += Convert.ToString(caseStatement.Else.LiteralValue);
}
}
}
sql += " END ";
return(sql);
}
protected static string GetMathmaticalExpressionColumn(StandardProviderParameters std, esDynamicQuerySerializable query, esMathmaticalExpression mathmaticalExpression)
{
bool isMod = false;
bool needsRounding = false;
string sql = "(";
if (mathmaticalExpression.ItemFirst)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem1, true, false);
sql += esArithmeticOperatorToString(mathmaticalExpression, out isMod, out needsRounding);
if (mathmaticalExpression.SelectItem2 != null)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem2, true, false);
}
else
{
sql += GetMathmaticalExpressionLiteralType(std, mathmaticalExpression);
}
}
else
{
if (mathmaticalExpression.SelectItem2 != null)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem2, true, true);
}
else
{
sql += GetMathmaticalExpressionLiteralType(std, mathmaticalExpression);
}
sql += esArithmeticOperatorToString(mathmaticalExpression, out isMod, out needsRounding);
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem1, true, false);
}
sql += ")";
if (isMod)
{
sql = "MOD(" + sql.Replace("(", String.Empty).Replace(")", String.Empty) + ")";
}
if (needsRounding)
{
sql = "ROUND(" + sql + ", 10)";
}
return sql;
}
protected static string ApplyWhereSubOperations(StandardProviderParameters std, esDynamicQuerySerializable query, esComparison.esComparisonData comparisonData)
{
string sql = string.Empty;
if (comparisonData.HasExpression)
{
sql += GetMathmaticalExpressionColumn(std, query, comparisonData.Expression);
if (comparisonData.SubOperators != null && comparisonData.SubOperators.Count > 0)
{
sql = BuildSubOperationsSql(std, sql, comparisonData.SubOperators);
}
return(sql);
}
string delimitedColumnName = GetColumnName(comparisonData.Column);
if (comparisonData.SubOperators != null)
{
sql = BuildSubOperationsSql(std, delimitedColumnName, comparisonData.SubOperators);
}
else
{
sql = delimitedColumnName;
}
return(sql);
}
protected static string GetComparisonStatement(StandardProviderParameters std, esDynamicQuerySerializable query, List<esComparison> items, string prefix)
{
string sql = String.Empty;
string comma = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
//=======================================
// WHERE
//=======================================
if (items != null)
{
sql += prefix;
DbType paramType = DbType.String;
string compareTo = String.Empty;
foreach (esComparison comparisonItem in items)
{
paramType = DbType.String;
esComparison.esComparisonData comparisonData = (esComparison.esComparisonData)comparisonItem;
esDynamicQuerySerializable subQuery = null;
bool requiresParam = true;
bool needsStringParameter = false;
std.needsIntegerParameter = false;
if (comparisonData.IsParenthesis)
{
if (comparisonData.Parenthesis == esParenthesis.Open)
sql += "(";
else
sql += ")";
continue;
}
if (comparisonData.IsConjunction)
{
switch (comparisonData.Conjunction)
{
case esConjunction.And: sql += " AND "; break;
case esConjunction.Or: sql += " OR "; break;
case esConjunction.AndNot: sql += " AND NOT "; break;
case esConjunction.OrNot: sql += " OR NOT "; break;
}
continue;
}
Dictionary<string, SqlParameter> types = null;
if (comparisonData.Column.Query != null)
{
IDynamicQuerySerializableInternal iLocalQuery = comparisonData.Column.Query as IDynamicQuerySerializableInternal;
types = Cache.GetParameters(iLocalQuery.DataID, (esProviderSpecificMetadata)iLocalQuery.ProviderMetadata, (esColumnMetadataCollection)iLocalQuery.Columns);
}
if (comparisonData.IsLiteral)
{
if (comparisonData.Column.Name[0] == '<')
{
sql += comparisonData.Column.Name.Substring(1, comparisonData.Column.Name.Length - 2);
}
else
{
sql += comparisonData.Column.Name;
}
continue;
}
if (comparisonData.ComparisonColumn.Name == null)
{
subQuery = comparisonData.Value as esDynamicQuerySerializable;
if (subQuery == null)
{
if (comparisonData.Column.Name != null)
{
IDynamicQuerySerializableInternal iColQuery = comparisonData.Column.Query as IDynamicQuerySerializableInternal;
esColumnMetadataCollection columns = (esColumnMetadataCollection)iColQuery.Columns;
compareTo = Delimiters.Param + columns[comparisonData.Column.Name].PropertyName + (++std.pindex).ToString();
}
else
{
compareTo = Delimiters.Param + "Expr" + (++std.pindex).ToString();
}
}
else
{
// It's a sub query
compareTo = GetSubquerySearchCondition(subQuery) + " (" + BuildQuery(std, subQuery) + ") ";
requiresParam = false;
}
}
else
{
compareTo = GetColumnName(comparisonData.ComparisonColumn);
requiresParam = false;
}
switch (comparisonData.Operand)
{
case esComparisonOperand.Exists:
sql += " EXISTS" + compareTo;
break;
case esComparisonOperand.NotExists:
sql += " NOT EXISTS" + compareTo;
break;
//-----------------------------------------------------------
// Comparison operators, left side vs right side
//-----------------------------------------------------------
case esComparisonOperand.Equal:
if(comparisonData.ItemFirst)
sql += ApplyWhereSubOperations(std, query, comparisonData) + " = " + compareTo;
else
sql += compareTo + " = " + ApplyWhereSubOperations(std, query, comparisonData);
break;
case esComparisonOperand.NotEqual:
if (comparisonData.ItemFirst)
sql += ApplyWhereSubOperations(std, query, comparisonData) + " <> " + compareTo;
else
sql += compareTo + " <> " + ApplyWhereSubOperations(std, query, comparisonData);
break;
case esComparisonOperand.GreaterThan:
if (comparisonData.ItemFirst)
sql += ApplyWhereSubOperations(std, query, comparisonData) + " > " + compareTo;
else
sql += compareTo + " > " + ApplyWhereSubOperations(std, query, comparisonData);
break;
case esComparisonOperand.LessThan:
if (comparisonData.ItemFirst)
sql += ApplyWhereSubOperations(std, query, comparisonData) + " < " + compareTo;
else
sql += compareTo + " < " + ApplyWhereSubOperations(std, query, comparisonData);
break;
case esComparisonOperand.LessThanOrEqual:
if (comparisonData.ItemFirst)
sql += ApplyWhereSubOperations(std, query, comparisonData) + " <= " + compareTo;
else
sql += compareTo + " <= " + ApplyWhereSubOperations(std, query, comparisonData);
break;
case esComparisonOperand.GreaterThanOrEqual:
if (comparisonData.ItemFirst)
sql += ApplyWhereSubOperations(std, query, comparisonData) + " >= " + compareTo;
else
sql += compareTo + " >= " + ApplyWhereSubOperations(std, query, comparisonData);
break;
case esComparisonOperand.Like:
string esc = comparisonData.LikeEscape.ToString();
if(String.IsNullOrEmpty(esc) || esc == "\0")
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " LIKE " + compareTo;
needsStringParameter = true;
}
else
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " LIKE " + compareTo;
sql += " ESCAPE '" + esc + "'";
needsStringParameter = true;
}
break;
case esComparisonOperand.NotLike:
esc = comparisonData.LikeEscape.ToString();
if (String.IsNullOrEmpty(esc) || esc == "\0")
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " NOT LIKE " + compareTo;
needsStringParameter = true;
}
else
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " NOT LIKE " + compareTo;
sql += " ESCAPE '" + esc + "'";
needsStringParameter = true;
}
break;
case esComparisonOperand.Contains:
sql += " CONTAINS(" + GetColumnName(comparisonData.Column) + ", " + compareTo + ")";
paramType = DbType.AnsiStringFixedLength;
needsStringParameter = true;
break;
case esComparisonOperand.IsNull:
sql += ApplyWhereSubOperations(std, query, comparisonData) + " IS NULL";
requiresParam = false;
break;
case esComparisonOperand.IsNotNull:
sql += ApplyWhereSubOperations(std, query, comparisonData) + " IS NOT NULL";
requiresParam = false;
break;
case esComparisonOperand.In:
case esComparisonOperand.NotIn:
{
if (subQuery != null)
{
// They used a subquery for In or Not
sql += ApplyWhereSubOperations(std, query, comparisonData);
sql += (comparisonData.Operand == esComparisonOperand.In) ? " IN" : " NOT IN";
sql += compareTo;
}
else
{
comma = String.Empty;
if (comparisonData.Operand == esComparisonOperand.In)
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " IN (";
}
else
{
sql += ApplyWhereSubOperations(std, query, comparisonData) + " NOT IN (";
}
foreach(object oin in comparisonData.Values)
{
string str = oin as string;
if (str != null)
{
// STRING
sql += comma + Delimiters.StringOpen + str + Delimiters.StringClose;
comma = ",";
}
else if (null != oin as System.Collections.IEnumerable)
{
// LIST OR COLLECTION OF SOME SORT
System.Collections.IEnumerable enumer = oin as System.Collections.IEnumerable;
if (enumer != null)
{
System.Collections.IEnumerator iter = enumer.GetEnumerator();
while (iter.MoveNext())
{
object o = iter.Current;
string soin = o as string;
if (soin != null)
sql += comma + Delimiters.StringOpen + soin + Delimiters.StringClose;
else
sql += comma + Convert.ToString(o);
comma = ",";
}
}
}
else
{
// NON STRING OR LIST
sql += comma + Convert.ToString(oin);
comma = ",";
}
}
sql += ")";
requiresParam = false;
}
}
break;
case esComparisonOperand.Between:
SqlCommand sqlCommand = std.cmd as SqlCommand;
sql += ApplyWhereSubOperations(std, query, comparisonData) + " BETWEEN ";
sql += compareTo;
if (comparisonData.ComparisonColumn.Name == null)
{
sqlCommand.Parameters.AddWithValue(compareTo, comparisonData.BetweenBegin);
}
if (comparisonData.ComparisonColumn2.Name == null)
{
IDynamicQuerySerializableInternal iColQuery = comparisonData.Column.Query as IDynamicQuerySerializableInternal;
esColumnMetadataCollection columns = (esColumnMetadataCollection)iColQuery.Columns;
compareTo = Delimiters.Param + columns[comparisonData.Column.Name].PropertyName + (++std.pindex).ToString();
sql += " AND " + compareTo;
sqlCommand.Parameters.AddWithValue(compareTo, comparisonData.BetweenEnd);
}
else
{
sql += " AND " + Delimiters.ColumnOpen + comparisonData.ComparisonColumn2 + Delimiters.ColumnClose;
}
requiresParam = false;
break;
}
if (requiresParam)
{
SqlParameter p;
if (comparisonData.Column.Name != null)
{
p = types[comparisonData.Column.Name];
p = Cache.CloneParameter(p);
p.ParameterName = compareTo;
p.Value = comparisonData.Value;
if (needsStringParameter)
{
p.DbType = paramType;
}
else if (std.needsIntegerParameter)
{
p.DbType = DbType.Int32;
}
}
else
{
p = new SqlParameter(compareTo, comparisonData.Value);
}
std.cmd.Parameters.Add(p);
}
}
}
return sql;
}
/// <summary>
/// The Constructor
/// </summary>
public esCase(esDynamicQuerySerializable query)
{
this.data.Query = query;
}
static public string CreateFullName(esDynamicQuerySerializable query)
{
IDynamicQueryInternal iQuery = query as IDynamicQueryInternal;
string name = String.Empty;
if ((iQuery.Catalog != null || iQuery.ProviderMetadata.Catalog != null) &&
(iQuery.Schema != null || iQuery.ProviderMetadata.Schema != null))
{
name += Delimiters.TableOpen;
name += iQuery.Catalog != null ? iQuery.Catalog : iQuery.ProviderMetadata.Catalog;
name += Delimiters.TableClose + ".";
}
if (iQuery.Schema != null || iQuery.ProviderMetadata.Schema != null)
{
name += Delimiters.TableOpen;
name += iQuery.Schema != null ? iQuery.Schema : iQuery.ProviderMetadata.Schema;
name += Delimiters.TableClose + ".";
}
name += Delimiters.TableOpen;
if (query.es.QuerySource != null)
name += query.es.QuerySource;
else
name += iQuery.ProviderMetadata.Destination;
name += Delimiters.TableClose;
return name;
}
protected static string GetOrderByStatement(StandardProviderParameters std, esDynamicQuerySerializable query)
{
string sql = String.Empty;
string comma = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (iQuery.InternalOrderByItems != null)
{
sql += " ORDER BY ";
foreach (esOrderByItem orderByItem in iQuery.InternalOrderByItems)
{
bool literal = false;
sql += comma;
string columnName = orderByItem.Expression.Column.Name;
if (columnName != null && columnName[0] == '<')
{
sql += columnName.Substring(1, columnName.Length - 2);
if (orderByItem.Direction == esOrderByDirection.Unassigned)
{
literal = true; // They must provide the DESC/ASC in the literal string
}
}
else
{
sql += GetExpressionColumn(std, query, orderByItem.Expression, false, false);
}
if (!literal)
{
if (orderByItem.Direction == esOrderByDirection.Ascending)
sql += " ASC";
else
sql += " DESC";
}
comma = ",";
}
}
return sql;
}
protected static string GetMathmaticalExpressionColumn(StandardProviderParameters std, esDynamicQuerySerializable query, esMathmaticalExpression mathmaticalExpression)
{
string sql = "(";
if (mathmaticalExpression.ItemFirst)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem1, true, true);
sql += esArithmeticOperatorToString(mathmaticalExpression.Operator);
if (mathmaticalExpression.SelectItem2 != null)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem2, true, true);
}
else
{
sql += GetMathmaticalExpressionLiteralType(std, mathmaticalExpression);
}
}
else
{
if (mathmaticalExpression.SelectItem2 != null)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem2, true, true);
}
else
{
sql += GetMathmaticalExpressionLiteralType(std, mathmaticalExpression);
}
sql += esArithmeticOperatorToString(mathmaticalExpression.Operator);
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem1, true, true);
}
sql += ")";
return(sql);
}
protected static string GetGroupByStatement(StandardProviderParameters std, esDynamicQuerySerializable query)
{
string sql = String.Empty;
string comma = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (iQuery.InternalGroupByItems != null)
{
sql += " GROUP BY ";
foreach (esGroupByItem groupBy in iQuery.InternalGroupByItems)
{
sql += comma;
string columnName = groupBy.Expression.Column.Name;
if (columnName != null && columnName[0] == '<')
sql += columnName.Substring(1, columnName.Length - 2);
else
sql += GetExpressionColumn(std, query, groupBy.Expression, false, false);
comma = ",";
}
if (query.es.WithRollup)
{
sql += " WITH ROLLUP";
}
}
return sql;
}
/// <summary>
/// The esComparison class is dynamically created by your
/// BusinessEntity's DynamicQuery mechanism.
/// </summary>
public esComparison(esDynamicQuerySerializable query)
{
this.data.Query = query;
}
protected static string GetMathmaticalExpressionColumn(StandardProviderParameters std, esDynamicQuerySerializable query, esMathmaticalExpression mathmaticalExpression)
{
string sql = "(";
if (mathmaticalExpression.ItemFirst)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem1, true, true);
switch (mathmaticalExpression.Operator)
{
case esArithmeticOperator.Add: sql += "+"; break;
case esArithmeticOperator.Subtract: sql += "-"; break;
case esArithmeticOperator.Multiply: sql += "*"; break;
case esArithmeticOperator.Divide: sql += "/"; break;
case esArithmeticOperator.Modulo: sql += "%"; break;
}
if (mathmaticalExpression.SelectItem2 != null)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem2, true, true);
}
else
{
switch (mathmaticalExpression.LiteralType)
{
case esSystemType.String:
sql += Delimiters.StringOpen + (string)mathmaticalExpression.Literal + Delimiters.StringClose;
break;
case esSystemType.DateTime:
sql += Delimiters.StringOpen + ((DateTime)(mathmaticalExpression.Literal)).ToShortDateString() + Delimiters.StringClose;
break;
default:
sql += Convert.ToString(mathmaticalExpression.Literal);
break;
}
}
}
else
{
if (mathmaticalExpression.SelectItem2 != null)
{
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem2, true, true);
}
else
{
switch (mathmaticalExpression.LiteralType)
{
case esSystemType.String:
sql += Delimiters.StringOpen + (string)mathmaticalExpression.Literal + Delimiters.StringClose;
break;
case esSystemType.DateTime:
sql += Delimiters.StringOpen + ((DateTime)(mathmaticalExpression.Literal)).ToShortDateString() + Delimiters.StringClose;
break;
default:
sql += Convert.ToString(mathmaticalExpression.Literal);
break;
}
}
switch (mathmaticalExpression.Operator)
{
case esArithmeticOperator.Add: sql += "+"; break;
case esArithmeticOperator.Subtract: sql += "-"; break;
case esArithmeticOperator.Multiply: sql += "*"; break;
case esArithmeticOperator.Divide: sql += "/"; break;
case esArithmeticOperator.Modulo: sql += "%"; break;
}
sql += GetExpressionColumn(std, query, mathmaticalExpression.SelectItem1, true, true);
}
sql += ")";
return sql;
}
