ArrayRow.java example

Explorer
crate-master
/*
 * Licensed to Crate under one or more contributor license agreements.
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.  Crate 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.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial
 * agreement.
 */

package io.crate.data;

import java.util.Arrays;

/**
 * A Row that is similar to {@link RowN} in that is uses a backing array which can be changed.
 * <p>
 * The only difference is that size is always derived from the backing array and not changeable.
 */
public class ArrayRow implements Row {

    private Object[] cells;

    @Override
    public int numColumns() {
        return cells.length;
    }

    @Override
    public Object get(int index) {
        return cells[index];
    }

    @Override
    public Object[] materialize() {
        Object[] copy = new Object[cells.length];
        System.arraycopy(cells, 0, copy, 0, cells.length);
        return copy;
    }

    public void cells(Object[] cells) {
        this.cells = cells;
    }

    @Override
    public String toString() {
        return "ArrayRow{" +
               "cells=" + Arrays.toString(cells) +
               '}';
    }
}