org.jfree.xml.util.SimpleObjectFactory Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of jtstand-common Show documentation
jtstand-common is a library derived from jcommon, used by jtstand-chart, which is derived from jfreechart
There is a newer version: 1.5.9
/*
 * Copyright (c) 2009 Albert Kurucz. 
 *
 * This file, SimpleObjectFactory.java is part of JTStand.
 *
 * JTStand 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.
 *
 * JTStand 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 GTStand.  If not, see .
 */

package org.jfree.xml.util;

import java.util.HashMap;

/**
 * A simple object factory.
 */
public class SimpleObjectFactory implements ObjectFactory {

    /** The object mappings. */
    private HashMap objectMappings;
    
    /** The manual object mappings. */
    private HashMap manualMappings;
    
    /** The multiplex mappings. */
    private HashMap multiplexMappings;

    /**
     * Creates a new instance.
     */
    public SimpleObjectFactory() {
        this.objectMappings = new HashMap();
        this.manualMappings = new HashMap();
        this.multiplexMappings = new HashMap();
    }

    /**
     * Adds a manual mapping.
     * 
     * @param mapping  the mapping.
     */
    public void addManualMapping(final ManualMappingDefinition mapping) {
        this.manualMappings.put(mapping.getBaseClass(), mapping);
    }

    /**
     * Adds a generic handler.
     * 
     * @param handler  the handler.
     */
    public void addGenericHandler(final GenericObjectFactory handler) {
        this.objectMappings.put(handler.getBaseClass(), handler);
    }

    /**
     * Adds a multiplex mapping.
     * 
     * @param mplex  the multiplex mapping.
     */
    public void addMultiplexMapping(final MultiplexMappingDefinition mplex) {
        this.multiplexMappings.put(mplex.getBaseClass(), mplex);
    }

    /**
     * Clears the mappings.
     */
    public void clear() {
        this.objectMappings.clear();
        this.manualMappings.clear();
        this.multiplexMappings.clear();
    }

    /**
     * Returns a factory instance for the given class. The factory is independent
     * from all previously generated instances.
     *
     * @param c the class
     * @return the object factory.
     */
    public GenericObjectFactory getFactoryForClass(final Class c) {
        final GenericObjectFactory factory = (GenericObjectFactory) this.objectMappings.get(c);
        if (factory == null) {
            return null;
        }
        return factory.getInstance();
    }

    /**
     * Returns the manual mapping definition for the given class, or null, if
     * not manual definition exists.
     *
     * @param c the class for which to check the existence of the definition
     * @return the manual mapping definition or null.
     */
    public ManualMappingDefinition getManualMappingDefinition(final Class c) {
        return (ManualMappingDefinition) this.manualMappings.get(c);
    }

    /**
     * Returns the multiplex definition for the given class, or null, if no
     * such definition exists.
     *
     * @param c the class for which to check the existence of the multiplexer
     * @return the multiplexer for the class, or null if no multiplexer exists.
     */
    public MultiplexMappingDefinition getMultiplexDefinition(final Class c) {
        final MultiplexMappingDefinition definition = (MultiplexMappingDefinition)
        this.multiplexMappings.get(c);
        return definition;
    }

    /**
     * Checks, whether a generic handler exists for the given class. This does
     * not check, whether an mapping exists.
     *
     * @param c the class for which to check
     * @return true, if an generic handler is defined, false otherwise.
     */
    public boolean isGenericHandler(final Class c) {
        return this.objectMappings.containsKey(c);
    }
}