private void EmitFrom()
{
SqlTableAlias tbl;
foreach (NPathClassName className in query.From.Classes)
{
tbl = propertyPathTraverser.GetClassTableAlias(className.Name);
if (!(includedTableAliases.Contains(tbl)))
{
FromTable fromTable = new FromTable();
fromTable.Alias = tbl ;
fromTables.Add(fromTable);
includedTableAliases.Add(tbl);
}
}
}
private string EmitLeftOuterJoin(TableJoin tableJoin, FromTable fromTable) //, StringBuilder whereBuilder)
{
StringBuilder clause = new StringBuilder() ;
IPropertyMap propertyMap = tableJoin.PropertyMap ;
ITableMap tableMap = propertyMap.MustGetTableMap();
ArrayList columnMaps = tableJoin.ColumnMaps;
object hashObject = tableJoin.Parent;
if (hashObject == null) { hashObject = propertyMap; }
SqlTableAlias tbl = GetTableAlias(tableMap, hashObject);
SqlColumnAlias col;
SqlTableAlias idtbl = null;
SqlColumnAlias idcol;
ITableMap idTableMap;
foreach (IColumnMap columnMap in columnMaps)
{
if (idtbl == null)
{
idTableMap = columnMap.MustGetPrimaryKeyTableMap();
idtbl = GetTableAlias(idTableMap, tableJoin);
}
col = tbl.GetSqlColumnAlias(columnMap);
idcol = idtbl.GetSqlColumnAlias(columnMap.MustGetPrimaryKeyColumnMap());
fromTable.Alias = idtbl;
fromTable.LinksToAlias = tbl;
fromTable.Columns.Add(idcol);
fromTable.LinksToColumns.Add(col);
this.includedTableAliases.Add(idtbl);
}
if (tableJoin.BaseTableMap != null)
{
columnMaps = tableJoin.BaseColumnMaps;
tbl = GetTableAlias(tableMap, hashObject);
idtbl = null;
foreach (IColumnMap columnMap in columnMaps)
{
if (idtbl == null)
{
if (hashObject is IPropertyMap) { hashObject = ((IPropertyMap) hashObject).ClassMap ; }
idtbl = GetTableAlias(columnMap.MustGetPrimaryKeyTableMap(), hashObject);
}
col = tbl.GetSqlColumnAlias(columnMap);
idcol = idtbl.GetSqlColumnAlias(columnMap.MustGetPrimaryKeyColumnMap());
// fromTable.Alias = idtbl;
// fromTable.LinksToAlias = tbl;
// fromTable.Columns.Add(idcol);
// fromTable.LinksToColumns.Add(col);
// this.includedTableAliases.Add(idtbl);
fromTable.Alias = tbl;
fromTable.LinksToAlias = idtbl;
fromTable.Columns.Add(col);
fromTable.LinksToColumns.Add(idcol);
this.includedTableAliases.Add(tbl);
// SqlSearchCondition search = select.SqlWhereClause.GetNextSqlSearchCondition();
// search.GetSqlComparePredicate(col, SqlCompareOperatorType.Equals, idcol);
}
}
return clause.ToString();
}
private void RenderLeftOuterJoinFrom(FromTable tbl)
{
foreach ( FromTable fromTable in fromJoinTables )
{
if (fromTable.LinksToAlias == tbl.Alias )
{
EmitFromTable(fromTable);
RenderLeftOuterJoinFrom(fromTable);
}
}
}
private void EmitFromTable(FromTable fromTable)
{
if (fromTable.LinksToAlias != null)
{
SqlJoinTableSource join = select.SqlFromClause.AddSqlJoinTableSource(fromTable.Alias, fromTable.LinksToAlias, SqlJoinType.LeftOuter);
int i = 0;
foreach (SqlColumnAlias column in fromTable.Columns)
{
SqlColumnAlias linksToColumn = (SqlColumnAlias) fromTable.LinksToColumns[i];
SqlSearchCondition search = join.GetNextSqlSearchCondition();
search.GetSqlComparePredicate(column, SqlCompareOperatorType.Equals, linksToColumn);
i++;
}
}
else
{
select.SqlFromClause.AddSqlAliasTableSource(fromTable.Alias);
}
}
private void GetFromClauseJoinTables()
{
Hashtable tablePropertyAliases = null;
foreach (ITableMap tableMap in this.tableAliases.Keys)
{
tablePropertyAliases = (Hashtable) this.tableAliases[tableMap];
foreach (string s in tablePropertyAliases.Values)
{
SqlTableAlias table = select.GetSqlTableAlias(tableMap, s);
if (!(includedTableAliases.Contains(table)))
{
FromTable fromTable = new FromTable() ;
fromTable.Alias = table;
fromAliasTables.Add(fromTable);
includedTableAliases.Add(table);
}
}
}
}
private void GetWhereClauseJoinTables(ArrayList tableJoins)
{
ReferenceType refType;
foreach (TableJoin tableJoin in tableJoins)
{
refType = tableJoin.PropertyMap.ReferenceType;
if (refType != ReferenceType.None)
{
CreateJoin(tableJoin);
if (tableJoin.JoinType == JoinType.InnerJoin)
{
EmitOldStyleInnerJoin(tableJoin);
}
else
{
FromTable fromTable = new FromTable();
EmitLeftOuterJoin(tableJoin, fromTable);
fromJoinTables.Add(fromTable);
}
}
GetWhereClauseJoinTables(tableJoin.Children);
}
}
