net.imadz.meta.FlavorFactoryMetaData Maven / Gradle / Ivy

Go to download
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright (c) 2013-2020 Madz. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License"). You
 * may not use this file except in compliance with the License. You can
 * obtain a copy of the License at
 * https://raw.github.com/zhongdj/Lifecycle/master/License.txt
 * . See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 * 
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 * 
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license." If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above. However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */
package net.imadz.meta;

import java.util.Map;

import net.imadz.meta.impl.KeyedEnumerationMap;

/**
 * MetaData flavor
 */
public abstract class FlavorFactoryMetaData & Keyed>> implements FlavorMetaData, FlavorFactory {

    private final KeySet keySet;
    private final Map, E> flavorKeyMap;

    @SuppressWarnings("unchecked")
    protected FlavorFactoryMetaData(E... keyEnumeration) {
        flavorKeyMap = KeyedEnumerationMap.valueOf(keyEnumeration);
        keySet = new KeySet(flavorKeyMap.keySet().toArray(new Object[flavorKeyMap.size()]));
    }

    protected FlavorFactoryMetaData(Class keyEnumeration) {
        flavorKeyMap = KeyedEnumerationMap.valueOf(keyEnumeration);
        keySet = new KeySet(flavorKeyMap.keySet().toArray(new Object[flavorKeyMap.size()]));
    }

    @Override
    public String toString() {
        return getClass().getSimpleName();
    }

    @Override
    public FlavorFactoryMetaData filter(MetaData parent, MetaDataFilter filter, boolean lazyFilter) {
        return this;
    }

    @Override
    public final KeySet getKeySet() {
        return keySet;
    }

    protected abstract Object buildFlavor(E type, Object container) throws Exception;

    @Override
    public final  T getFlavor(Class flavorInterface, Object container) throws FlavorNotSupportedException {
        E type = this.flavorKeyMap.get(flavorInterface);
        if ( null != type ) {
            try {
                Object value = buildFlavor(type, container);
                if ( null != value ) {
                    return flavorInterface.cast(value);
                }
            } catch (Exception e) {
                e.printStackTrace();
                throw new FlavorNotSupportedException(this, flavorInterface);
            }
        }
        throw new FlavorNotSupportedException(this, flavorInterface);
    }
}