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* to you under the Apache License, Version 2.0 (the
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package org.apache.cayenne.unit;
import java.sql.Connection;
import java.util.Collection;
import org.apache.cayenne.dba.DbAdapter;
import org.apache.cayenne.exp.parser.ASTExtract;
import org.apache.cayenne.map.DataMap;
/**
*/
public class FrontBaseUnitDbAdapter extends UnitDbAdapter {
public FrontBaseUnitDbAdapter(DbAdapter adapter) {
super(adapter);
}
@Override
public boolean supportsLobs() {
return true;
}
@Override
public boolean supportsLobInsertsAsStrings() {
return false;
}
@Override
public boolean supportsEqualNullSyntax() {
return false;
}
@Override
public void willDropTables(Connection conn, DataMap map, Collection tablesToDrop)
throws Exception {
// avoid dropping constraints...
}
@Override
public boolean supportsBatchPK() {
return false;
}
@Override
public boolean supportsHaving() {
// FrontBase DOES support HAVING, however it doesn't support aggegate expressions
// in HAVING, and requires using column aliases instead. As HAVING is used for old
// and ugly derived DbEntities, no point in implementing special support at the
// adapter level.
return false;
}
@Override
public boolean supportsCaseInsensitiveOrder() {
// TODO, Andrus 11/8/2005: FrontBase does support UPPER() in ordering clause,
// however it does not
// support table aliases inside UPPER... Not sure what to do about it.
return false;
}
@Override
public boolean supportsEscapeInLike() {
return false;
}
@Override
public boolean supportsExpressionInHaving() {
return false;
}
public boolean supportsExtractPart(ASTExtract.DateTimePart part) {
switch (part) {
case WEEK:
case DAY_OF_YEAR:
case DAY_OF_WEEK:
return false;
}
return true;
}
}