/**
* Method declaration
*
*
* @param f
* @param ownfilter
*
* @throws Exception
*/
public void resolve(TableFilter f, bool ownfilter)
{
if (eCondition != null)
{
// first set the table filter in the condition
eCondition.resolve(f);
if (f != null && ownfilter)
{
// the table filter tries to get as many conditions as possible
// but only if the table filter belongs to this query
f.setCondition(eCondition);
}
}
int len = eColumn.Length;
for (int i = 0; i < len; i++)
{
eColumn[i].resolve(f);
}
}
/**
* Method declaration
*
*
* @param f
*
* @throws Exception
*/
public void resolve(TableFilter f)
{
if (f != null && iType == COLUMN)
{
if (sTable == null || f.getName().Equals(sTable))
{
int i = f.getTable().searchColumn(sColumn);
if (i != -1)
{
// todo: other error message: multiple tables are possible
Trace.check(tFilter == null || tFilter == f,
Trace.COLUMN_NOT_FOUND, sColumn);
tFilter = f;
iColumn = i;
sTable = f.getName();
iDataType = f.getTable().getColumnType(i);
}
}
}
// currently sets only data type
// todo: calculate fixed expressions if possible
if (eArg != null)
{
eArg.resolve(f);
}
if (eArg2 != null)
{
eArg2.resolve(f);
}
if (sSelect != null)
{
sSelect.resolve(f, false);
sSelect.resolve();
}
/* if (fFunction != null)
* {
* fFunction.resolve(f);
* }
*/
if (iDataType != 0)
{
return;
}
switch (iType)
{
/* case FUNCTION:
* iDataType = fFunction.getReturnType();
*
* break;
*/
case QUERY:
iDataType = sSelect.eColumn[0].iDataType;
break;
case NEGATE:
iDataType = eArg.iDataType;
break;
case ADD:
case SUBTRACT:
case MULTIPLY:
case DIVIDE:
iDataType = eArg.iDataType;
break;
case CONCAT:
iDataType = Column.VARCHAR;
break;
case NOT:
case EQUAL:
case BIGGER_EQUAL:
case BIGGER:
case SMALLER:
case SMALLER_EQUAL:
case NOT_EQUAL:
case LIKE:
case AND:
case OR:
case IN:
case EXISTS:
iDataType = Column.BIT;
break;
case COUNT:
iDataType = Column.INTEGER;
break;
case MAX:
case MIN:
case SUM:
case AVG:
iDataType = eArg.iDataType;
break;
case CONVERT:
// it is already set
break;
case IFNULL:
case CASEWHEN:
iDataType = eArg2.iDataType;
break;
}
}