package com.tesora.dve.sql.transform.strategy.joinsimplification;
/*
* #%L
* Tesora Inc.
* Database Virtualization Engine
* %%
* Copyright (C) 2011 - 2014 Tesora Inc.
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* #L%
*/
import com.tesora.dve.exceptions.PEException;
import com.tesora.dve.sql.schema.SchemaContext;
import com.tesora.dve.sql.statement.dml.DMLStatement;
abstract class Simplifier {
public abstract boolean applies(SchemaContext sc, DMLStatement dmls) throws PEException;
public abstract DMLStatement simplify(SchemaContext sc, DMLStatement in, JoinSimplificationTransformFactory parent) throws PEException;
}