asterixdb/asterix-column/src/test/java/org/apache/asterix/column/assembler/value/DummyValueGetter.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 at
 *
 *   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 org.apache.asterix.column.assembler.value;

import org.apache.asterix.column.values.IColumnValuesReader;
import org.apache.hyracks.data.std.api.IValueReference;
import org.apache.hyracks.data.std.util.ArrayBackedValueStorage;

class DummyValueGetter implements IValueGetter {
    private final ArrayBackedValueStorage storage;

    DummyValueGetter() {
        storage = new ArrayBackedValueStorage();
    }

    @Override
    public IValueReference getValue(IColumnValuesReader reader) {
        IValueReference value = reader.getBytes();
        storage.setSize(1 + value.getLength());
        storage.getByteArray()[0] = reader.getTypeTag().serialize();
        System.arraycopy(value.getByteArray(), value.getStartOffset(), storage.getByteArray(), 1, value.getLength());
        return storage;
    }
}