hivesterix/hivesterix-runtime/src/main/java/edu/uci/ics/hivesterix/runtime/inspector/HiveBinaryIntegerInspector.java

/*
 * Copyright 2009-2013 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.hivesterix.runtime.inspector;

import edu.uci.ics.hivesterix.serde.lazy.LazyUtils;
import edu.uci.ics.hivesterix.serde.lazy.LazyUtils.VInt;
import edu.uci.ics.hyracks.algebricks.data.IBinaryIntegerInspector;

public class HiveBinaryIntegerInspector implements IBinaryIntegerInspector {
    private VInt value = new VInt();

    HiveBinaryIntegerInspector() {
    }

    @Override
    public int getIntegerValue(byte[] bytes, int offset, int length) {
        LazyUtils.readVInt(bytes, offset, value);
        if (value.length != length)
            throw new IllegalArgumentException("length mismatch in int hash function actual: " + length + " expected "
                    + value.length);
        return value.value;
    }

}