/*
* Copyright 2004-2015 the Seasar Foundation and the Others.
*
* 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.
*/
package org.seasar.framework.container.impl;
import org.seasar.framework.container.ComponentDef;
import org.seasar.framework.container.ComponentNotFoundRuntimeException;
import org.seasar.framework.container.S2Container;
/**
* {@link S2Container}の振る舞いをカスタマイズするためのクラスです。 {@link Provider}を取り替えることによってカスタマイズが可能です。
* {@link Provider}はs2container.diconで設定します。
*
* @author koichik
*/
public class S2ContainerBehavior {
private static Provider provider = new DefaultProvider();
private S2ContainerBehavior() {
}
/**
* {@link Provider}を返します。
*
* @return {@link Provider}
*/
public static Provider getProvider() {
return provider;
}
/**
* {@link Provider}を設定します。
*
* @param p
*/
public static void setProvider(final Provider p) {
provider = p;
}
/**
* {@link S2Container#getComponent(Object)}のカスタマイズポイントです。
*
* @param container
* @param key
* @return {@link ComponentDef}
*/
public static ComponentDef acquireFromGetComponent(S2Container container,
final Object key) {
return getProvider().acquireFromGetComponent(container, key);
}
/**
* {@link S2Container#getComponentDef(Object)}のカスタマイズポイントです。
*
* @param container
* @param key
* @return {@link ComponentDef}
*/
public static ComponentDef acquireFromGetComponentDef(
S2Container container, final Object key) {
return getProvider().acquireFromGetComponentDef(container, key);
}
/**
* {@link S2Container#hasComponentDef(Object)}のカスタマイズポイントです。
*
* @param container
* @param key
* @return {@link ComponentDef}
*/
public static ComponentDef acquireFromHasComponentDef(
S2Container container, final Object key) {
return getProvider().acquireFromHasComponentDef(container, key);
}
/**
* {@link S2Container#injectDependency(Object)}のカスタマイズポイントです。
*
* @param container
* @param key
* @return
*/
public static ComponentDef acquireFromInjectDependency(
S2Container container, final Object key) {
return getProvider().acquireFromInjectDependency(container, key);
}
/**
* S2Containerの振る舞いをカスタマイズするためのインターフェースです。
*
* @author koichik
*/
public interface Provider {
/**
* {@link S2Container#getComponent(Object)}のカスタマイズポイントです。
*
* @param container
* @param key
* @return {@link ComponentDef}
*/
ComponentDef acquireFromGetComponent(S2Container container,
final Object key);
/**
* {@link S2Container#getComponentDef(Object)}のカスタマイズポイントです。
*
* @param container
* @param key
* @return {@link ComponentDef}
*/
ComponentDef acquireFromGetComponentDef(S2Container container,
final Object key);
/**
* {@link S2Container#hasComponentDef(Object)}のカスタマイズポイントです。
*
* @param container
* @param key
* @return {@link ComponentDef}
*/
ComponentDef acquireFromHasComponentDef(S2Container container,
final Object key);
/**
* {@link S2Container#injectDependency(Object)}のカスタマイズポイントです。
*
* @param container
* @param key
* @return {@link ComponentDef}
*/
ComponentDef acquireFromInjectDependency(S2Container container,
final Object key);
}
/**
* デフォルトの
* {@link org.seasar.framework.container.impl.S2ContainerBehavior.Provider}実装です。
*
* @author koichik
*/
public static class DefaultProvider implements Provider {
public ComponentDef acquireFromGetComponent(
final S2Container container, final Object key) {
return acquireFromGetComponentDef(container, key);
}
public ComponentDef acquireFromGetComponentDef(
final S2Container container, final Object key) {
final ComponentDef cd = getComponentDef(container, key);
if (cd == null) {
throw new ComponentNotFoundRuntimeException(key);
}
return cd;
}
public ComponentDef acquireFromHasComponentDef(
final S2Container container, final Object key) {
return getComponentDef(container, key);
}
public ComponentDef acquireFromInjectDependency(
final S2Container container, final Object key) {
return acquireFromGetComponentDef(container, key);
}
/**
* {@link ComponentDef}を返すときのデフォルトの振る舞いです。
*
* @param container
* @param key
* @return {@link ComponentDef}
*/
protected ComponentDef getComponentDef(final S2Container container,
final Object key) {
return ((S2ContainerImpl) container).internalGetComponentDef(key);
}
}
}