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/*-
 * ========================LICENSE_START=================================
 * smooks-persistence-cartridge
 * %%
 * Copyright (C) 2020 Smooks
 * %%
 * Licensed under the terms of the Apache License Version 2.0, or
 * the GNU Lesser General Public License version 3.0 or later.
 *
 * SPDX-License-Identifier: Apache-2.0 OR LGPL-3.0-or-later
 *
 * ======================================================================
 *
 * 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 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.
 *
 * ======================================================================
 *
 * This program 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 3 of the License, or (at your option) any later version.
 *
 * This program 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 program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 * =========================LICENSE_END==================================
 */
package org.smooks.cartridges.persistence.parameter;

/**
 * @author [email protected]
 */
public class PositionalParameterContainer implements ParameterContainer {

    Object[] values;

    /**
     *
     */
    public PositionalParameterContainer(PositionalParameterIndex index) {
        values = new Object[index.size()];
    }

    /* (non-Javadoc)
     * @see org.smooks.scribe.parameter.ParameterContainer#clear()
     */
    public void clear() {
        values = new Object[values.length];
    }

    /* (non-Javadoc)
     * @see org.smooks.scribe.parameter.ParameterContainer#containsParameter(org.smooks.scribe.parameter.Parameter)
     */
    public boolean containsParameter(PositionalParameter parameter) {
        int index = parameter.getIndex();

        return values.length > index && values[index] != null;
    }

    /* (non-Javadoc)
     * @see org.smooks.scribe.parameter.ParameterContainer#get(org.smooks.scribe.parameter.Parameter)
     */
    public Object get(PositionalParameter parameter) {
        int index = parameter.getIndex();

        return values[index];
    }

    /* (non-Javadoc)
     * @see org.smooks.scribe.parameter.ParameterContainer#put(org.smooks.scribe.parameter.Parameter, java.lang.Object)
     */
    public void put(PositionalParameter parameter, Object bean) {
        values[parameter.getIndex()] = bean;
    }

    public Object[] getValues() {
        return values.clone();
    }

    /* (non-Javadoc)
     * @see org.smooks.scribe.parameter.ParameterContainer#remove(org.smooks.scribe.parameter.Parameter)
     */
    public Object remove(PositionalParameter parameter) {
        Object old = get(parameter);

        if (old != null) {
            values[parameter.getIndex()] = null;
        }

        return old;
    }

}