hyracks/hyracks-dataflow-std/src/main/java/edu/uci/ics/hyracks/dataflow/std/base/AbstractUnaryInputOperatorNodePushable.java

/*
 * Copyright 2009-2010 by The Regents of the University of California
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * you may obtain a copy of the License from
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package edu.uci.ics.hyracks.dataflow.std.base;

import edu.uci.ics.hyracks.api.comm.IFrameWriter;
import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor;
import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;

public abstract class AbstractUnaryInputOperatorNodePushable extends AbstractOperatorNodePushable implements
        IFrameWriter {
    protected IFrameWriter writer;
    protected RecordDescriptor recordDesc;

    @Override
    public final IFrameWriter getInputFrameWriter(int index) {
        return this;
    }

    @Override
    public final int getInputArity() {
        return 1;
    }

    @Override
    public void initialize() throws HyracksDataException {
    }

    @Override
    public void deinitialize() throws HyracksDataException {
    }
}