protected override DbCommand ParseSelect(APSqlSelectCommand command)
{
StringBuilder sb = new StringBuilder();
OracleCommand dbCmd = new OracleCommand();
using (ParserWriter writer = new ParserWriter(sb, command.CommandNameSuitable))
{
if ((command.Skip ?? 0) > 0)
{
writer.WriteDirect("SELECT * FROM ( SELECT query_alias.*, ROWNUM query_rownum FROM (");
writer.WriteLine();
ParseSelectInternal(command, dbCmd, writer);
writer.Idented = 0;
writer.WriteLine();
writer.WriteDirect(String.Format(") query_alias {0} ) WHERE query_rownum > {1}",
(command.Take ?? 0) > 0 ? "WHERE ROWNUM <= " + (command.Take.Value + command.Skip.Value) : "",
command.Skip.Value));
}
else
{
ParseSelectInternal(command, dbCmd, writer, command.Take);
}
}
dbCmd.CommandText = sb.ToString();
return(dbCmd);
}
private void WriteHaving(ParserWriter writer, APSqlWhereClause clause, OracleCommand dbCmd)
{
if (clause != null && clause.Next != null)
{
writer.WriteLine();
writer.WriteDirect("HAVING");
APSqlWherePhrase phrase = clause.Next as APSqlWherePhrase;
if (phrase.Next == null)
{
if (phrase is APSqlConditionAndPhrase)
{
WriteConditionPhrase(writer, (phrase as APSqlConditionAndPhrase).Child, APSqlConditionJoinType.AND, dbCmd);
return;
}
else if (phrase is APSqlConditionOrPhrase)
{
WriteConditionPhrase(writer, (phrase as APSqlConditionOrPhrase).Child, APSqlConditionJoinType.OR, dbCmd);
return;
}
}
WriteConditionPhrase(writer, phrase, APSqlConditionJoinType.AND, dbCmd);
}
}
protected override DbCommand ParseInsert(APSqlInsertCommand command)
{
StringBuilder sb = new StringBuilder();
OracleCommand dbCmd = new OracleCommand();
using (ParserWriter writer = new ParserWriter(sb, command.CommandNameSuitable))
{
APSqlInsertCommand insert = command as APSqlInsertCommand;
if (insert.SubQuery != null)
{
WriteInsertWithSubQuery(writer, insert);
writer.WriteLine();
ParseSelectInternal(insert.SubQuery, dbCmd, writer);
}
else
{
WriteInsert(writer, insert, command.ValuesClause);
writer.Idented++;
WriteValues(writer, command.ValuesClause, dbCmd);
// oracle unsupport provider="Database", so
// do not return value.
}
}
dbCmd.CommandText = sb.ToString();
return(dbCmd);
}
private void WriteSet(ParserWriter writer, APSqlValuesClause clause, SqlCommand dbCmd)
{
if (clause != null && clause.Next != null)
{
writer.WriteLine();
writer.WriteDirect("SET");
APSqlSetPhrase phrase = clause.Next;
bool isFirst = true;
while (phrase != null)
{
if (!isFirst)
{
writer.Write(',');
}
else
{
isFirst = false;
}
writer.Write(phrase.AssignmentExpr.SelectExpr);
writer.Write("=");
if (!TryWriteValue(writer, phrase.Value))
{
string paramName = writer.GetSuitableParameterName(phrase.ParamName);
writer.Write("@" + paramName);
AddParameter(dbCmd, paramName, phrase.Value, ParameterDirection.Input);
}
phrase = phrase.Next as APSqlSetPhrase;
}
}
}
protected override DbCommand ParseInsert(APSqlInsertCommand command)
{
StringBuilder sb = new StringBuilder();
SqlCommand dbCmd = new SqlCommand();
using (ParserWriter writer = new ParserWriter(sb, command.CommandNameSuitable))
{
if (command.SubQuery != null)
{
WriteInsertWithSubQuery(writer, command);
writer.WriteLine();
ParseSelectInternal(command.SubQuery, 0, dbCmd, writer);
}
else
{
WriteInsert(writer, command, command.ValuesClause);
writer.Idented++;
WriteValues(writer, command.ValuesClause, dbCmd);
if (command.NeedReturnAutoIncrement)
{
writer.Write("SELECT @@IDENTITY");
}
}
}
dbCmd.CommandText = sb.ToString();
return(dbCmd);
}
private void WriteGroupBy(ParserWriter writer, APSqlGroupByClause clause, OracleCommand dbCmd)
{
if (clause != null && clause.Next != null)
{
writer.WriteLine();
writer.WriteDirect("GROUP BY");
APSqlExprPhrase phrase = clause.Next as APSqlExprPhrase;
bool isFirst = true;
while (phrase != null)
{
if (!isFirst)
{
writer.Write(',');
}
else
{
isFirst = false;
}
WriteSelectExpression(writer, phrase.Expr);
//writer.Write(phrase.Expr.SelectExpr);
phrase = phrase.Next as APSqlExprPhrase;
}
}
}
private void WriteOrderBy(ParserWriter writer, APSqlOrderByClause clause)
{
if (clause != null && clause.Next != null)
{
writer.WriteLine();
writer.WriteDirect("ORDER BY");
APSqlOrderPhrase phrase = clause.Next;
bool isFirst = true;
while (phrase != null)
{
if (!isFirst)
{
writer.Write(',');
}
else
{
isFirst = false;
}
WriteSelectExpression(writer, phrase.Expr);
if (phrase.OrderAccording == APSqlOrderAccording.Desc)
{
writer.Write("DESC");
}
phrase = phrase.Next as APSqlOrderPhrase;
}
}
}
private void WriteValues(ParserWriter writer, APSqlValuesClause clause, OracleCommand dbCmd)
{
if (clause != null && clause.Next != null)
{
writer.WriteLine();
writer.WriteDirect("VALUES");
APSqlSetPhrase phrase = clause.Next;
bool isFirst = true;
writer.Write('(');
while (phrase != null)
{
if (!isFirst)
{
writer.Write(',');
}
else
{
isFirst = false;
}
if (!TryWriteValue(writer, phrase.Value))
{
string paramName = "v_" + writer.GetSuitableParameterName(phrase.ParamName);
writer.Write(":" + paramName);
AddParameter(dbCmd, paramName, phrase.Value, ParameterDirection.Input);
}
phrase = phrase.Next as APSqlSetPhrase;
}
writer.Write(')');
}
}
private void WriteFrom(ParserWriter writer, APSqlFromClause clause, OracleCommand dbCmd)
{
if (clause != null && clause.Next != null)
{
writer.WriteLine();
writer.WriteDirect("FROM");
APSqlFromPhrase phrase = clause.Next;
bool isFirst = true;
while (phrase != null)
{
if (phrase.JoinType == APSqlJoinType.None)
{
if (!isFirst)
{
writer.Write(',');
}
else
{
isFirst = false;
}
writer.Write(phrase.TableName);
if (phrase.AliasName != null)
{
writer.Write(phrase.AliasName);
}
}
else
{
writer.Write(GetJoinTypeString(phrase.JoinType));
writer.Write(phrase.TableName);
if (phrase.AliasName != null)
{
writer.Write(phrase.AliasName);
}
if (phrase.JoinType != APSqlJoinType.Cross && phrase.JoinOnPhrase != null)
{
WriteJoinOn(writer, phrase.JoinOnPhrase, dbCmd);
}
}
phrase = phrase.Next as APSqlFromPhrase;
}
}
}
protected override DbCommand ParseSelect(APSqlSelectCommand command)
{
StringBuilder sb = new StringBuilder();
SqlCommand dbCmd = new SqlCommand();
using (ParserWriter writer = new ParserWriter(sb, command.CommandNameSuitable))
{
WriteSelect(writer, command, command.Take ?? 0);
writer.Idented++;
WriteFrom(writer, command.FromClause, dbCmd);
WriteWhere(writer, command.WhereClause, dbCmd);
if (command.Skip != null && command.Skip > 0)
{
writer.WriteLine();
if (command.WhereClause == null || command.WhereClause.Next == null)
{
writer.WriteDirect("WHERE");
}
else
{
writer.WriteDirect("AND");
}
writer.Write(command.PrimeryKeyExpr.SelectExpr);
writer.Write("NOT IN (");
{
// sub query
WriteSelect(writer, new APSqlSelectCommand(command.PrimeryKeyExpr), command.Skip.Value);
writer.Idented++;
WriteFrom(writer, command.FromClause, dbCmd);
WriteWhere(writer, command.WhereClause, dbCmd);
WriteGroupBy(writer, command.GroupByClause, dbCmd);
WriteHaving(writer, command.HavingClause, dbCmd);
WriteOrderBy(writer, command.OrderByClause);
writer.Idented--;
}
writer.Write(")");
}
WriteGroupBy(writer, command.GroupByClause, dbCmd);
WriteHaving(writer, command.HavingClause, dbCmd);
WriteOrderBy(writer, command.OrderByClause);
}
dbCmd.CommandText = sb.ToString();
return(dbCmd);
}
private void WriteWhere(ParserWriter writer, APSqlWhereClause clause, OracleCommand dbCmd, int?maxReturnCount = null)
{
bool standardWhere = clause != null && clause.Next != null;
if (standardWhere || maxReturnCount != null)
{
writer.WriteLine();
writer.WriteDirect("WHERE");
if (standardWhere)
{
APSqlWherePhrase phrase = clause.Next as APSqlWherePhrase;
if (phrase.Next == null)
{
if (phrase is APSqlConditionAndPhrase)
{
WriteConditionPhrase(writer, (phrase as APSqlConditionAndPhrase).Child, APSqlConditionJoinType.AND, dbCmd);
return;
}
else if (phrase is APSqlConditionOrPhrase)
{
WriteConditionPhrase(writer, (phrase as APSqlConditionOrPhrase).Child, APSqlConditionJoinType.OR, dbCmd);
return;
}
}
WriteConditionPhrase(writer, phrase, APSqlConditionJoinType.AND, dbCmd);
}
if (maxReturnCount != null)
{
if (standardWhere)
{
writer.Write("AND");
}
writer.Write("ROWNUM <= " + maxReturnCount.Value);
}
}
}
private void WriteConditionPhrase(ParserWriter writer, APSqlWherePhrase phrase, APSqlConditionJoinType join, OracleCommand dbCmd)
{
bool isFirst = true;
writer.Write("(");
while (phrase != null)
{
if (!isFirst)
{
writer.Write(join.ToString());
}
if (phrase.IsNot)
{
writer.Write("NOT (");
}
if (phrase is APSqlConditionAndPhrase)
{
WriteConditionPhrase(writer, (phrase as APSqlConditionAndPhrase).Child, APSqlConditionJoinType.AND, dbCmd);
}
else if (phrase is APSqlConditionOrPhrase)
{
WriteConditionPhrase(writer, (phrase as APSqlConditionOrPhrase).Child, APSqlConditionJoinType.OR, dbCmd);
}
else
{
APSqlConditionPhrase cond = phrase as APSqlConditionPhrase;
// for this, if columnDef is null, mean this is a 'EXISTS ( subquery )' phrase
// do not
// change to check ConditionOperator.
if (cond.ConditionOperator != APSqlConditionOperator.Exists && cond.ConditionOperator != APSqlConditionOperator.NotExists)
{
WriteSelectExpression(writer, cond.Expr);
}
if (cond.ConditionOperator == APSqlConditionOperator.Equals /*&& !cond.IsRelationDef*/ && (cond.Value == null || cond.Value == DBNull.Value))
{
writer.Write("IS NULL");
}
else if (cond.ConditionOperator == APSqlConditionOperator.NotEqual /*&& !cond.IsRelationDef*/ && (cond.Value == null || cond.Value == DBNull.Value))
{
writer.Write("IS NOT NULL");
}
else
{
switch (cond.ConditionOperator)
{
case APSqlConditionOperator.Equals: writer.Write("="); break;
case APSqlConditionOperator.NotEqual: writer.Write("<>"); break;
case APSqlConditionOperator.GreaterThan: writer.Write(">"); break;
case APSqlConditionOperator.GreaterThanOrEqual: writer.Write(">="); break;
case APSqlConditionOperator.LessThan: writer.Write("<"); break;
case APSqlConditionOperator.LessThanOrEqual: writer.Write("<="); break;
case APSqlConditionOperator.Between: writer.Write("BETWEEN"); break;
case APSqlConditionOperator.NotBetween: writer.Write("NOT BETWEEN"); break;
case APSqlConditionOperator.Like: writer.Write("LIKE"); break;
case APSqlConditionOperator.NotLike: writer.Write("NOT LIKE"); break;
case APSqlConditionOperator.In: writer.Write("IN"); break;
case APSqlConditionOperator.NotIn: writer.Write("NOT IN"); break;
case APSqlConditionOperator.Exists: writer.Write("EXISTS"); break;
case APSqlConditionOperator.NotExists: writer.Write("NOT EXISTS"); break;
}
object value = cond.Value;
if (!TryWriteValue(writer, value))
{
if (value is APSqlSelectCommand)
{
switch (cond.SubQueryScalarRestrict)
{
case APSqlSubQueryScalarRestrict.All: writer.Write("ALL"); break;
case APSqlSubQueryScalarRestrict.Some: writer.Write("SOME"); break;
case APSqlSubQueryScalarRestrict.Any: writer.Write("ANY"); break;
}
writer.Write("(");
int idented = writer.Idented++;
writer.WriteLine();
ParseSelectInternal(value as APSqlSelectCommand, dbCmd, writer);
writer.Idented = idented;
writer.Write(")");
}
else
{
if (cond.ConditionOperator == APSqlConditionOperator.In || cond.ConditionOperator == APSqlConditionOperator.NotIn)
{
writer.Write("(");
int i = 0;
foreach (object val in value as Array)
{
if (i != 0)
{
writer.Write(',');
}
string paramName = writer.GetSuitableParameterName(cond.ParamName);
paramName = String.Format("v_{0}${1}", paramName, i);
writer.Write(":" + paramName);
AddParameter(dbCmd, paramName, val, ParameterDirection.Input);
i++;
}
writer.Write(")");
}
else if (cond.ConditionOperator == APSqlConditionOperator.Between || cond.ConditionOperator == APSqlConditionOperator.NotBetween)
{
object begin = (value as Array).GetValue(0);
object end = (value as Array).GetValue(1);
if (!TryWriteValue(writer, begin))
{
string paramName = writer.GetSuitableParameterName(cond.ParamName);
writer.Write(":" + paramName);
AddParameter(dbCmd, paramName, begin, ParameterDirection.Input);
}
writer.Write("AND");
if (!TryWriteValue(writer, end))
{
string paramName = writer.GetSuitableParameterName(cond.ParamName);
writer.Write(":" + paramName);
AddParameter(dbCmd, paramName, end, ParameterDirection.Input);
}
}
else
{
string paramName = writer.GetSuitableParameterName(cond.ParamName);
writer.Write(":" + paramName);
AddParameter(dbCmd, paramName, value, ParameterDirection.Input);
}
}
}
}
}
if (phrase.IsNot)
{
writer.Write(")");
}
isFirst = false;
phrase = phrase.Next as APSqlWherePhrase;
}
writer.Write(")");
}
protected override DbCommand ParseInsert(APSqlInsertCommand command)
{
StringBuilder sb = new StringBuilder();
SqlCommand dbCmd = new SqlCommand();
using (ParserWriter writer = new ParserWriter(sb, command.CommandNameSuitable))
{
if (command.SubQuery != null)
{
WriteInsertWithSubQuery(writer, command);
writer.WriteLine();
ParseSelectInternal(command.SubQuery, 0, dbCmd, writer);
}
else
{
WriteInsert(writer, command, command.ValuesClause);
writer.Idented++;
WriteValues(writer, command.ValuesClause, dbCmd);
if (command.NeedReturnAutoIncrement)
{
writer.Write("SELECT @@IDENTITY");
}
}
}
dbCmd.CommandText = sb.ToString();
return dbCmd;
}
protected override DbCommand ParseSelect(APSqlSelectCommand command)
{
StringBuilder sb = new StringBuilder();
SqlCommand dbCmd = new SqlCommand();
using (ParserWriter writer = new ParserWriter(sb, command.CommandNameSuitable))
{
WriteSelect(writer, command, command.Take ?? 0);
writer.Idented++;
WriteFrom(writer, command.FromClause, dbCmd);
WriteWhere(writer, command.WhereClause, dbCmd);
if (command.Skip != null && command.Skip > 0)
{
writer.WriteLine();
if (command.WhereClause == null || command.WhereClause.Next == null)
{
writer.WriteDirect("WHERE");
}
else
{
writer.WriteDirect("AND");
}
writer.Write(command.PrimeryKeyExpr.SelectExpr);
writer.Write("NOT IN (");
{
// sub query
WriteSelect(writer, new APSqlSelectCommand(command.PrimeryKeyExpr), command.Skip.Value);
writer.Idented++;
WriteFrom(writer, command.FromClause, dbCmd);
WriteWhere(writer, command.WhereClause, dbCmd);
WriteGroupBy(writer, command.GroupByClause, dbCmd);
WriteHaving(writer, command.HavingClause, dbCmd);
WriteOrderBy(writer, command.OrderByClause);
writer.Idented--;
}
writer.Write(")");
}
WriteGroupBy(writer, command.GroupByClause, dbCmd);
WriteHaving(writer, command.HavingClause, dbCmd);
WriteOrderBy(writer, command.OrderByClause);
}
dbCmd.CommandText = sb.ToString();
return dbCmd;
}
private void WriteValues(ParserWriter writer, APSqlValuesClause clause, SqlCommand dbCmd)
{
if (clause != null && clause.Next != null)
{
writer.WriteLine();
writer.WriteDirect("VALUES");
APSqlSetPhrase phrase = clause.Next;
bool isFirst = true;
writer.Write('(');
while (phrase != null)
{
if (!isFirst)
writer.Write(',');
else
isFirst = false;
if (!TryWriteValue(writer, phrase.Value))
{
string paramName = writer.GetSuitableParameterName(phrase.ParamName);
writer.Write("@" + paramName);
AddParameter(dbCmd, paramName, phrase.Value, ParameterDirection.Input);
}
phrase = phrase.Next as APSqlSetPhrase;
}
writer.Write(')');
}
}
private void WriteOrderBy(ParserWriter writer, APSqlOrderByClause clause)
{
if (clause != null && clause.Next != null)
{
writer.WriteLine();
writer.WriteDirect("ORDER BY");
APSqlOrderPhrase phrase = clause.Next;
bool isFirst = true;
while (phrase != null)
{
if (!isFirst)
writer.Write(',');
else
isFirst = false;
WriteSelectExpression(writer, phrase.Expr);
if (phrase.OrderAccording == APSqlOrderAccording.Desc)
writer.Write("DESC");
phrase = phrase.Next as APSqlOrderPhrase;
}
}
}
private void WriteConditionPhrase(ParserWriter writer, APSqlWherePhrase phrase, APSqlConditionJoinType join, SqlCommand dbCmd)
{
bool isFirst = true;
writer.Write("(");
while (phrase != null)
{
if (!isFirst)
writer.Write(join.ToString());
if (phrase.IsNot)
writer.Write("NOT (");
if (phrase is APSqlConditionAndPhrase)
{
WriteConditionPhrase(writer, (phrase as APSqlConditionAndPhrase).Child, APSqlConditionJoinType.AND, dbCmd);
}
else if (phrase is APSqlConditionOrPhrase)
{
WriteConditionPhrase(writer, (phrase as APSqlConditionOrPhrase).Child, APSqlConditionJoinType.OR, dbCmd);
}
else
{
APSqlConditionPhrase cond = phrase as APSqlConditionPhrase;
// for this, if columnDef is null, mean this is a 'EXISTS ( subquery )' phrase
// do not
// change to check ConditionOperator.
if (cond.ConditionOperator != APSqlConditionOperator.Exists && cond.ConditionOperator != APSqlConditionOperator.NotExists)
WriteSelectExpression(writer, cond.Expr);
if (cond.ConditionOperator == APSqlConditionOperator.Equals /*&& !cond.IsRelationDef*/ && (cond.Value == null || cond.Value == DBNull.Value))
{
writer.Write("IS NULL");
}
else if (cond.ConditionOperator == APSqlConditionOperator.NotEqual /*&& !cond.IsRelationDef*/ && (cond.Value == null || cond.Value == DBNull.Value))
{
writer.Write("IS NOT NULL");
}
else
{
switch (cond.ConditionOperator)
{
case APSqlConditionOperator.Equals: writer.Write("="); break;
case APSqlConditionOperator.NotEqual: writer.Write("<>"); break;
case APSqlConditionOperator.GreaterThan: writer.Write(">"); break;
case APSqlConditionOperator.GreaterThanOrEqual: writer.Write(">="); break;
case APSqlConditionOperator.LessThan: writer.Write("<"); break;
case APSqlConditionOperator.LessThanOrEqual: writer.Write("<="); break;
case APSqlConditionOperator.Between: writer.Write("BETWEEN"); break;
case APSqlConditionOperator.NotBetween: writer.Write("NOT BETWEEN"); break;
case APSqlConditionOperator.Like: writer.Write("LIKE"); break;
case APSqlConditionOperator.NotLike: writer.Write("NOT LIKE"); break;
case APSqlConditionOperator.In: writer.Write("IN"); break;
case APSqlConditionOperator.NotIn: writer.Write("NOT IN"); break;
case APSqlConditionOperator.Exists: writer.Write("EXISTS"); break;
case APSqlConditionOperator.NotExists: writer.Write("NOT EXISTS"); break;
}
object value = cond.Value;
if (!TryWriteValue(writer, value))
{
if (value is APSqlSelectCommand)
{
switch (cond.SubQueryScalarRestrict)
{
case APSqlSubQueryScalarRestrict.All: writer.Write("ALL"); break;
case APSqlSubQueryScalarRestrict.Some: writer.Write("SOME"); break;
case APSqlSubQueryScalarRestrict.Any: writer.Write("ANY"); break;
}
writer.Write("(");
int idented = writer.Idented++;
writer.WriteLine();
ParseSelectInternal(value as APSqlSelectCommand, 0, dbCmd, writer);
writer.Idented = idented;
writer.Write(")");
}
else
{
if (cond.ConditionOperator == APSqlConditionOperator.In || cond.ConditionOperator == APSqlConditionOperator.NotIn)
{
writer.Write("(");
int i = 0;
foreach (object val in value as Array)
{
if (i != 0)
writer.Write(',');
string paramName = writer.GetSuitableParameterName(cond.ParamName);
paramName = String.Format("@{0}${1}", paramName, i);
writer.Write(paramName);
AddParameter(dbCmd, paramName, val, ParameterDirection.Input);
i++;
}
writer.Write(")");
}
else if (cond.ConditionOperator == APSqlConditionOperator.Between || cond.ConditionOperator == APSqlConditionOperator.NotBetween)
{
object begin = (value as Array).GetValue(0);
object end = (value as Array).GetValue(1);
if (!TryWriteValue(writer, begin))
{
string paramName = writer.GetSuitableParameterName(cond.ParamName);
writer.Write("@" + paramName);
AddParameter(dbCmd, paramName, begin, ParameterDirection.Input);
}
writer.Write("AND");
if (!TryWriteValue(writer, end))
{
string paramName = writer.GetSuitableParameterName(cond.ParamName);
writer.Write("@" + paramName);
AddParameter(dbCmd, paramName, end, ParameterDirection.Input);
}
}
else
{
string paramName = writer.GetSuitableParameterName(cond.ParamName);
writer.Write("@" + paramName);
AddParameter(dbCmd, paramName, value, ParameterDirection.Input);
}
}
}
}
}
if (phrase.IsNot)
writer.Write(")");
isFirst = false;
phrase = phrase.Next as APSqlWherePhrase;
}
writer.Write(")");
}
private void WriteFrom(ParserWriter writer, APSqlFromClause clause, SqlCommand dbCmd)
{
if (clause != null && clause.Next != null)
{
writer.WriteLine();
writer.WriteDirect("FROM");
APSqlFromPhrase phrase = clause.Next;
bool isFirst = true;
while (phrase != null)
{
if (phrase.JoinType == APSqlJoinType.None)
{
if (!isFirst)
writer.Write(',');
else
isFirst = false;
writer.Write(phrase.TableName);
if (phrase.AliasName != null)
writer.Write("AS " + phrase.AliasName);
}
else
{
writer.Write(GetJoinTypeString(phrase.JoinType));
writer.Write(phrase.TableName);
if (phrase.AliasName != null)
writer.Write("AS " + phrase.AliasName);
if (phrase.JoinType != APSqlJoinType.Cross && phrase.JoinOnPhrase != null)
{
WriteJoinOn(writer, phrase.JoinOnPhrase, dbCmd);
}
}
phrase = phrase.Next as APSqlFromPhrase;
}
}
}
protected override DbCommand ParseSelect(APSqlSelectCommand command)
{
StringBuilder sb = new StringBuilder();
OracleCommand dbCmd = new OracleCommand();
using (ParserWriter writer = new ParserWriter(sb, command.CommandNameSuitable))
{
if ((command.Skip ?? 0) > 0)
{
writer.WriteDirect("SELECT * FROM ( SELECT query_alias.*, ROWNUM query_rownum FROM (");
writer.WriteLine();
ParseSelectInternal(command, dbCmd, writer);
writer.Idented = 0;
writer.WriteLine();
writer.WriteDirect(String.Format(") query_alias {0} ) WHERE query_rownum > {1}",
(command.Take ?? 0) > 0 ? "WHERE ROWNUM <= " + (command.Take.Value + command.Skip.Value) : "",
command.Skip.Value));
}
else
{
ParseSelectInternal(command, dbCmd, writer, command.Take);
}
}
dbCmd.CommandText = sb.ToString();
return dbCmd;
}
private void WriteSet(ParserWriter writer, APSqlValuesClause clause, OracleCommand dbCmd)
{
if (clause != null && clause.Next != null)
{
writer.WriteLine();
writer.WriteDirect("SET");
APSqlSetPhrase phrase = clause.Next;
bool isFirst = true;
while (phrase != null)
{
if (!isFirst)
writer.Write(',');
else
isFirst = false;
writer.Write(phrase.AssignmentExpr.SelectExpr);
writer.Write("=");
if (!TryWriteValue(writer, phrase.Value))
{
string paramName = "v_" + writer.GetSuitableParameterName(phrase.ParamName);
writer.Write(":" + paramName);
AddParameter(dbCmd, paramName, phrase.Value, ParameterDirection.Input);
}
phrase = phrase.Next as APSqlSetPhrase;
}
}
}
private void WriteGroupBy(ParserWriter writer, APSqlGroupByClause clause, SqlCommand dbCmd)
{
if (clause != null && clause.Next != null)
{
writer.WriteLine();
writer.WriteDirect("GROUP BY");
APSqlExprPhrase phrase = clause.Next as APSqlExprPhrase;
bool isFirst = true;
while (phrase != null)
{
if (!isFirst)
writer.Write(',');
else
isFirst = false;
WriteSelectExpression(writer, phrase.Expr);
//writer.Write(phrase.Expr.SelectExpr);
phrase = phrase.Next as APSqlExprPhrase;
}
}
}
protected override DbCommand ParseInsert(APSqlInsertCommand command)
{
StringBuilder sb = new StringBuilder();
OracleCommand dbCmd = new OracleCommand();
using (ParserWriter writer = new ParserWriter(sb, command.CommandNameSuitable))
{
APSqlInsertCommand insert = command as APSqlInsertCommand;
if (insert.SubQuery != null)
{
WriteInsertWithSubQuery(writer, insert);
writer.WriteLine();
ParseSelectInternal(insert.SubQuery, dbCmd, writer);
}
else
{
WriteInsert(writer, insert, command.ValuesClause);
writer.Idented++;
WriteValues(writer, command.ValuesClause, dbCmd);
// oracle unsupport provider="Database", so
// do not return value.
}
}
dbCmd.CommandText = sb.ToString();
return dbCmd;
}
private void WriteHaving(ParserWriter writer, APSqlWhereClause clause, SqlCommand dbCmd)
{
if (clause != null && clause.Next != null)
{
writer.WriteLine();
writer.WriteDirect("HAVING");
APSqlWherePhrase phrase = clause.Next as APSqlWherePhrase;
if (phrase.Next == null)
{
if (phrase is APSqlConditionAndPhrase)
{
WriteConditionPhrase(writer, (phrase as APSqlConditionAndPhrase).Child, APSqlConditionJoinType.AND, dbCmd);
return;
}
else if (phrase is APSqlConditionOrPhrase)
{
WriteConditionPhrase(writer, (phrase as APSqlConditionOrPhrase).Child, APSqlConditionJoinType.OR, dbCmd);
return;
}
}
WriteConditionPhrase(writer, phrase, APSqlConditionJoinType.AND, dbCmd);
}
}
private void WriteWhere(ParserWriter writer, APSqlWhereClause clause, OracleCommand dbCmd, int? maxReturnCount = null)
{
bool standardWhere = clause != null && clause.Next != null;
if (standardWhere || maxReturnCount != null)
{
writer.WriteLine();
writer.WriteDirect("WHERE");
if (standardWhere)
{
APSqlWherePhrase phrase = clause.Next as APSqlWherePhrase;
if (phrase.Next == null)
{
if (phrase is APSqlConditionAndPhrase)
{
WriteConditionPhrase(writer, (phrase as APSqlConditionAndPhrase).Child, APSqlConditionJoinType.AND, dbCmd);
return;
}
else if (phrase is APSqlConditionOrPhrase)
{
WriteConditionPhrase(writer, (phrase as APSqlConditionOrPhrase).Child, APSqlConditionJoinType.OR, dbCmd);
return;
}
}
WriteConditionPhrase(writer, phrase, APSqlConditionJoinType.AND, dbCmd);
}
if (maxReturnCount != null)
{
if (standardWhere)
writer.Write("AND");
writer.Write("ROWNUM <= " + maxReturnCount.Value);
}
}
}