MultiFeatureStep.java example

Explorer
tesora-dve-pub-master
package com.tesora.dve.sql.transform.strategy.featureplan;

/*
 * #%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.Database;
import com.tesora.dve.sql.statement.dml.DMLStatement;
import com.tesora.dve.sql.transform.execution.ExecutionSequence;
import com.tesora.dve.sql.transform.strategy.PlannerContext;

// container for other feature steps
public class MultiFeatureStep extends FeatureStep {

	public MultiFeatureStep(FeaturePlanner planner) {
		super(planner, null, null);
	}

	@Override
	protected void scheduleSelf(PlannerContext sc, ExecutionSequence es)
			throws PEException {
	}

	@Override
	public DMLStatement getPlannedStatement() {
		return null;
	}

	@Override
	public Database<?> getDatabase(PlannerContext pc) {
		return getSelfChildren().get(0).getDatabase(pc);
	}
	
}