static public string CreateFullName(tgDynamicQuerySerializable query)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
tgMetadata meta = query;
string name = String.Empty;
string catalog = meta.Catalog ?? null;
string schema = meta.Schema ?? null;
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.tg.QuerySource != null)
{
name += query.tg.QuerySource;
}
else
{
name += meta.Destination;
}
name += Delimiters.TableClose;
return(name);
}
static public string CreateFullName(esDataRequest request, esDynamicQuerySerializable query)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
esProviderSpecificMetadata providerMetadata = iQuery.ProviderMetadata as esProviderSpecificMetadata;
string name = String.Empty;
string schema = iQuery.Schema ?? request.Schema ?? providerMetadata.Schema;
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 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);
}
static public string CreateFullName(tgDataRequest request, tgDynamicQuerySerializable query)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
tgProviderSpecificMetadata providerMetadata = iQuery.ProviderMetadata as tgProviderSpecificMetadata;
string name = String.Empty;
string catalog = iQuery.Catalog ?? request.Catalog ?? providerMetadata.Catalog;
string schema = iQuery.Schema ?? request.Schema ?? providerMetadata.Schema;
if (catalog != null)
{
name += Delimiters.TableOpen + catalog + Delimiters.TableClose + ".";
}
name += Delimiters.TableOpen;
if (query.tg.QuerySource != null)
{
name += query.tg.QuerySource;
}
else
{
name += providerMetadata.Destination;
}
name += Delimiters.TableClose;
return(name);
}
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 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);
}
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 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);
}
private void PerformAutoLogic(esDataSourceSelectEventArgs e)
{
esDynamicQuery query = e.Query != null ? e.Query : e.Collection.es.Query;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (this.autoPaging)
{
query.es.PageNumber = e.PageNumber;
query.es.PageSize = e.PageSize;
}
if (this.autoSorting)
{
if (e.SortItems != null)
{
foreach (esDataSourceSortItem sortItem in e.SortItems)
{
esColumnMetadata col = e.Collection.es.Meta.Columns.FindByPropertyName(sortItem.Property);
if (col != null)
{
query.OrderBy(col.Name, sortItem.Direction);
}
else if (sortItem.Property[0] == '<')
{
query.OrderBy(sortItem.Property, sortItem.Direction);
}
}
}
else
{
if (this.AutoPaging)
{
List <esColumnMetadata> pks = e.Collection.es.Meta.Columns.PrimaryKeys;
if (pks != null)
{
foreach (esColumnMetadata pk in pks)
{
query.OrderBy(pk.Name, esOrderByDirection.Ascending);
}
}
}
}
}
if (this.autoSorting || this.AutoPaging)
{
if (e.Query != null)
{
IEntityCollection iColl = e.Collection as IEntityCollection;
iColl.HookupQuery(query);
}
query.Load();
}
}
public void EmptyAliasUsesColumnName()
{
aggTestColl.Query.Select
(
aggTestColl.Query.Salary.Sum()
);
Assert.IsTrue(aggTestColl.Query.Load());
IDynamicQuerySerializableInternal iQuery = aggTestColl.Query as IDynamicQuerySerializableInternal;
Assert.AreEqual("Salary", iQuery.InternalSelectColumns[0].Column.Alias);
//Assert.AreEqual("Salary", aggTestColl.Query.Salary.Sum().Alias);
}
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, tgDynamicQuerySerializable query)
{
bool paging = false;
if (query.tg.PageNumber.HasValue && query.tg.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.tg.PageNumber.Value - 1) * query.tg.PageSize.Value);
sql += " LIMIT " + query.tg.PageSize.ToString();
sql += " OFFSET " + begRow.ToString() + " ";
}
else if (query.tg.Top >= 0)
{
sql += " LIMIT " + query.tg.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 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>
/// Used to describe the "where" conditions of the join itself
/// </summary>
/// <param name="items"></param>
/// <returns></returns>
public tgDynamicQuerySerializable On(params object[] items)
{
if (this.data.WhereItems == null)
{
this.data.WhereItems = new List <tgComparison>();
}
foreach (object item in items)
{
tgComparison wi = item as tgComparison;
if (wi != null)
{
if (wi.data.WhereExpression != null)
{
foreach (tgComparison exp in wi.data.WhereExpression)
{
tgDynamicQuerySerializable q = exp.Value as tgDynamicQuerySerializable;
if (q != null)
{
IDynamicQuerySerializableInternal iQ = q as IDynamicQuerySerializableInternal;
iQ.HookupProviderMetadata(q);
}
}
this.data.WhereItems.AddRange(wi.data.WhereExpression);
}
else
{
this.data.WhereItems.Add(wi);
}
tgDynamicQuerySerializable query = wi.Value as tgDynamicQuerySerializable;
if (query != null)
{
IDynamicQuerySerializableInternal iQ = query as IDynamicQuerySerializableInternal;
iQ.HookupProviderMetadata(query);
}
}
else
{
throw new Exception("Unsupported Join Syntax");
}
}
return(this.parentQuery);
}
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);
}
/// <summary>
/// This initializes the esDataRequest for the query.
/// </summary>
/// <param name="request">The request to populate.</param>
protected void PopulateRequest(esDataRequest request)
{
IMetadata meta = this.Meta;
esConnection conn = this.es2.Connection;
esProviderSpecificMetadata providerMetadata = meta.GetProviderMetadata(conn.ProviderMetadataKey);
IDynamicQuerySerializableInternal iQuery = this as IDynamicQuerySerializableInternal;
if ((this.queries != null && this.queries.Count > 0) || iQuery.InternalSetOperations != null)
{
AssignProviderMetadata(this, new List <esDynamicQuerySerializable>());
}
string catalog = conn.Catalog;
string schema = conn.Schema;
iData.Catalog = catalog;
iData.Schema = schema;
iData.DataID = meta.DataID;
iData.ProviderMetadata = providerMetadata;
iData.Columns = meta.Columns;
request.ConnectionString = conn.ConnectionString;
request.CommandTimeout = conn.CommandTimeout;
request.QueryType = esQueryType.DynamicQuery;
request.DynamicQuery = this;
request.DataID = meta.DataID;
request.ProviderMetadata = providerMetadata;
request.Catalog = catalog;
request.Schema = schema;
request.Columns = meta.Columns;
if (this.m_selectAll)
{
_selectAll();
}
if (es.QuerySource == null || es.QuerySource.Length == 0)
{
es.QuerySource = providerMetadata.Source;
}
}
protected static string GetGroupByStatement(StandardProviderParameters std, tgDynamicQuerySerializable query)
{
string sql = String.Empty;
string comma = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (iQuery.InternalGroupByItems != null)
{
sql += " GROUP BY ";
if (query.tg.WithRollup)
{
sql += " ROLLUP(";
}
foreach (tgGroupByItem 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.tg.WithRollup)
{
sql += ")";
}
}
return(sql);
}
protected static string GetJoinStatement(StandardProviderParameters std, tgDynamicQuerySerializable query)
{
string sql = String.Empty;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (iQuery.InternalJoinItems != null)
{
foreach (tgJoinItem joinItem in iQuery.InternalJoinItems)
{
tgJoinItem.tgJoinItemData joinData = (tgJoinItem.tgJoinItemData)joinItem;
switch (joinData.JoinType)
{
case tgJoinType.InnerJoin:
sql += " INNER JOIN ";
break;
case tgJoinType.LeftJoin:
sql += " LEFT JOIN ";
break;
case tgJoinType.RightJoin:
sql += " RIGHT JOIN ";
break;
case tgJoinType.FullJoin:
sql += " FULL JOIN ";
break;
}
IDynamicQuerySerializableInternal iSubQuery = joinData.Query as IDynamicQuerySerializableInternal;
sql += Shared.CreateFullName((tgProviderSpecificMetadata)iSubQuery.ProviderMetadata);
sql += " " + iSubQuery.JoinAlias + " ON ";
sql += GetComparisonStatement(std, query, joinData.WhereItems, String.Empty);
}
}
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(tgDynamicQuerySerializable query)
{
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
tgProviderSpecificMetadata providerMetadata = iQuery.ProviderMetadata as tgProviderSpecificMetadata;
string name = String.Empty;
name += Delimiters.TableOpen;
if (query.tg.QuerySource != null)
{
name += query.tg.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 GetColumnName(esColumnItem column)
{
if (column.Query == null || column.Query.es.JoinAlias == " ")
{
return(Delimiters.ColumnOpen + column.Name + Delimiters.ColumnClose);
}
else
{
IDynamicQuerySerializableInternal iQuery = column.Query as IDynamicQuerySerializableInternal;
if (iQuery.IsInSubQuery)
{
return(column.Query.es.JoinAlias + "." + Delimiters.ColumnOpen + column.Name + Delimiters.ColumnClose);
}
else
{
string alias = iQuery.SubQueryAlias == string.Empty ? iQuery.JoinAlias : iQuery.SubQueryAlias;
return(alias + "." + Delimiters.ColumnOpen + column.Name + Delimiters.ColumnClose);
}
}
}
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 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 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((esProviderSpecificMetadata)iSubQuery.ProviderMetadata);
sql += " " + iSubQuery.JoinAlias + " ON ";
foreach (esComparison comparisonItem in joinData.WhereItems)
{
esComparison.esComparisonData comparisonData = (esComparison.esComparisonData)comparisonItem;
if (comparisonData.IsParenthesis)
{
if (comparisonData.Parenthesis == esParenthesis.Open)
{
sql += "(";
}
else
{
sql += ")";
}
continue;
}
if (comparisonData.IsConjunction)
{
if (comparisonData.Conjunction == esConjunction.And)
{
sql += " AND ";
}
else
{
sql += " OR ";
}
continue;
}
sql += GetColumnName(comparisonData.Column);
switch (comparisonData.Operand)
{
case esComparisonOperand.Equal:
sql += " = ";
break;
case esComparisonOperand.NotEqual:
sql += " <> ";
break;
case esComparisonOperand.GreaterThan:
sql += " > ";
break;
case esComparisonOperand.LessThan:
sql += " < ";
break;
case esComparisonOperand.LessThanOrEqual:
sql += " <= ";
break;
case esComparisonOperand.GreaterThanOrEqual:
sql += " >= ";
break;
case esComparisonOperand.IsNull:
sql += " IS NULL ";
break;
case esComparisonOperand.IsNotNull:
sql += " IS NOT NULL ";
break;
case esComparisonOperand.In:
sql += " IN ";
break;
case esComparisonOperand.NotIn:
sql += " NOT IN ";
break;
}
if (comparisonData.ComparisonColumn.Name != null)
{
sql += GetColumnName(comparisonData.ComparisonColumn);
}
else
{
esDynamicQuerySerializable subQuery = comparisonData.Value as esDynamicQuerySerializable;
if (subQuery != null)
{
sql += GetSubquerySearchCondition(subQuery) + " (" + BuildQuery(std, subQuery) + ")";
}
else if (comparisonData.Value != null)
{
// Handle Literals
sql += comparisonData.Value.ToString();
}
}
}
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);
}
/// <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);
}
}
}
