BlockingFakeRelationalNode.java

/*
 * JBoss, Home of Professional Open Source.
 * See the COPYRIGHT.txt file distributed with this work for information
 * regarding copyright ownership.  Some portions may be licensed
 * to Red Hat, Inc. under one or more contributor license agreements.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

package org.teiid.query.processor.relational;

import java.util.List;

import org.teiid.common.buffer.*;
import org.teiid.core.TeiidComponentException;
import org.teiid.core.TeiidProcessingException;


public class BlockingFakeRelationalNode extends FakeRelationalNode {

    private int count = 1;
    
    private int returnPeriod = 2;
    
    /**
     * @param nodeID
     * @param data
     */
    public BlockingFakeRelationalNode(int nodeID, List[] data) {
        super(nodeID, data);
    }

    public BlockingFakeRelationalNode(int nodeID, List[] data, int batchSize) {
        super(nodeID, data, batchSize);
    }

    /**
     * @param nodeID
     * @param source
     * @param batchSize
     */
    public BlockingFakeRelationalNode(int nodeID, TupleSource source, int batchSize) {
        super(nodeID, source, batchSize);
    }
    
    public void setReturnPeriod(int returnPeriod) {
		this.returnPeriod = returnPeriod;
	}

    public TupleBatch nextBatchDirect() throws BlockedException, TeiidComponentException, TeiidProcessingException {
        if (count++%returnPeriod != 0) {
        	throw BlockedException.INSTANCE;
        }
        return super.nextBatchDirect();
    }

}