PicoContainer example source code file (EmptyPicoContainer.java)

This example PicoContainer source code file (EmptyPicoContainer.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - PicoContainer tags/keywords

collection, componentadapter, componentadapter, emptypicocontainer, io, list, list, object, parametername, picocontainer, picocontainer, serializable, t, t, util

The PicoContainer EmptyPicoContainer.java source code

/*****************************************************************************
 * Copyright (C) PicoContainer Organization. All rights reserved.            *
 * ------------------------------------------------------------------------- *
 * The software in this package is published under the terms of the BSD      *
 * style license a copy of which has been included with this distribution in *
 * the LICENSE.txt file.                                                     *
 *                                                                           *
 * Original code by Paul Hammant                                             *
 *****************************************************************************/
package org.picocontainer.containers;

import org.picocontainer.ComponentAdapter;
import org.picocontainer.PicoContainer;
import org.picocontainer.PicoVisitor;
import org.picocontainer.ParameterName;

import java.io.Serializable;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

/**
 * empty pico container serving as recoil damper in situations where you
 * do not like to check whether container reference suplpied to you
 * is null or not
 *
 * @author Konstantin Pribluda
 */
public class EmptyPicoContainer implements PicoContainer, Serializable {

    public Object getComponent(Object componentKeyOrType) {
        return null;
    }

    public <T> T getComponent(Class componentType) {
        return null;
    }

    public List getComponents() {
        return Collections.EMPTY_LIST;
    }

    public PicoContainer getParent() {
        return null;
    }

    public ComponentAdapter<?> getComponentAdapter(Object componentKey) {
        return null;
    }

    public <T> ComponentAdapter getComponentAdapter(Class componentType, ParameterName componentParameterName) {
        return null;
    }

    public Collection<ComponentAdapter getComponentAdapters() {
        return Collections.emptyList();
    }

    public <T> List> getComponentAdapters(Class componentType) {
        return Collections.emptyList();
    }

    public void accept(PicoVisitor visitor) {
    }

    public <T> List getComponents(Class componentType) {
        return Collections.emptyList();
    }

}