svnno****@sourc*****
svnno****@sourc*****
2009年 10月 6日 (火) 09:53:46 JST
Revision: 3709
http://sourceforge.jp/projects/jiemamy/svn/view?view=rev&revision=3709
Author: ashigeru
Date: 2009-10-06 09:53:46 +0900 (Tue, 06 Oct 2009)
Log Message:
-----------
Proxyを生成するサンプルを追加。ただしまだ動かない。
Added Paths:
-----------
leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/
leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/ExecutableFactory.java
leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/Main.java
leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/ProxyDriver.java
Added: leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/ExecutableFactory.java
===================================================================
--- leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/ExecutableFactory.java (rev 0)
+++ leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/ExecutableFactory.java 2009-10-06 00:53:46 UTC (rev 3709)
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2009 Jiemamy Project 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.jiemamy.util.enhancer.example._10proxy;
+
+import java.util.concurrent.Callable;
+
+/**
+ * {@link Runnable}と{@link Callable}を生成するファクトリ。
+ * @version $Date: 2009-10-05 20:36:43 +0900 (月, 05 10 2009) $
+ * @author Suguru ARAKAWA (Gluegent, Inc.)
+ */
+public interface ExecutableFactory {
+
+ /**
+ * @return a runnable
+ */
+ Runnable newRunnable();
+
+ /**
+ * @return a callable
+ */
+ Callable<String> newCallable();
+}
Property changes on: leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/ExecutableFactory.java
___________________________________________________________________
Added: svn:mime-type
+ text/plain
Added: leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/Main.java
===================================================================
--- leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/Main.java (rev 0)
+++ leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/Main.java 2009-10-06 00:53:46 UTC (rev 3709)
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2009 Jiemamy Project 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.jiemamy.util.enhancer.example._10proxy;
+
+import java.lang.reflect.Method;
+import java.util.Arrays;
+import java.util.Properties;
+
+import org.jiemamy.utils.enhancer.Enhance;
+import org.jiemamy.utils.enhancer.Enhancer;
+import org.jiemamy.utils.enhancer.InterfaceEnhancer;
+
+/**
+ * このパッケージのプログラムエントリ。
+ * @version $Date: 2009-10-05 20:36:43 +0900 (月, 05 10 2009) $
+ * @author Suguru ARAKAWA (Gluegent, Inc.)
+ */
+public class Main {
+
+ /**
+ * プログラムエントリ。
+ * @param args 無視される
+ * @throws Exception うまくいかない場合
+ */
+ public static void main(String...args) throws Exception {
+ Enhancer<ExecutableFactory> enhancer = new InterfaceEnhancer<ExecutableFactory>(
+ ExecutableFactory.class,
+ Properties.class, // Propertiesを実装するようにする
+ Arrays.<Enhance>asList(
+ // Daoの実装を生成する際に、 DaoFactory.newInstanceの引数でうまい具合に初期化
+ ProxyDriver.newEnhane(Runnable.class, new java.lang.reflect.InvocationHandler() {
+ public Object invoke(Object proxy, Method method, Object[] a) {
+ System.out.printf("Hook %s%n", method);
+ return null;
+ }
+ })
+ )
+ );
+ System.out.println("ファクトリを生成");
+ ExecutableFactory factory = enhancer.getFactory().newInstance();
+
+ System.out.println("プロダクトを生成");
+ Runnable runnable = factory.newRunnable();
+
+ System.out.println("run()メソッドの呼び出し");
+ runnable.run();
+ }
+}
Property changes on: leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/Main.java
___________________________________________________________________
Added: svn:mime-type
+ text/plain
Added: leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/ProxyDriver.java
===================================================================
--- leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/ProxyDriver.java (rev 0)
+++ leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/ProxyDriver.java 2009-10-06 00:53:46 UTC (rev 3709)
@@ -0,0 +1,154 @@
+/*
+ * Copyright 2009 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.jiemamy.util.enhancer.example._10proxy;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Proxy;
+
+import javassist.CtBehavior;
+import javassist.CtClass;
+import javassist.CtConstructor;
+
+import org.jiemamy.utils.enhancer.Enhance;
+import org.jiemamy.utils.enhancer.Invocation;
+import org.jiemamy.utils.enhancer.InvocationHandler;
+import org.jiemamy.utils.enhancer.InvocationPointcut;
+
+/**
+ * {@link java.lang.reflect.Proxy}のインスタンスを生成するための{@link Enhance}を作成する。
+ * @version $Date$
+ * @author Suguru ARAKAWA
+ */
+public class ProxyDriver {
+
+ /**
+ * 指定のインターフェースが表すインターフェースプロダクトを作成する際に、
+ * {@link java.lang.reflect.Proxy}を利用してプロダクトインスタンスの代わりに
+ * Proxyを返すためのエンハンスを作成する。
+ * @param anInterface Proxyを作成する対象のインターフェース
+ * @param handler 指定のインターフェースに対するメソッド呼び出しをハンドルするハンドラ
+ * @return 指定のインターフェースのメソッドを指定のハンドラでフックするProxyを生成するエンハンス
+ * @throws IllegalArgumentException 引数{@code anInterface}がプロクシを作成できないクラスである場合
+ * @throws NullPointerException 引数に{@code null}が指定された場合
+ */
+ public static Enhance newEnhane(Class<?> anInterface, java.lang.reflect.InvocationHandler handler) {
+ if (anInterface == null) {
+ throw new NullPointerException("anInterface is null"); //$NON-NLS-1$
+ }
+ if (handler == null) {
+ throw new NullPointerException("handler is null"); //$NON-NLS-1$
+ }
+
+ // Proxyクラスを作って、それをインスタンス化するコンストラクタを取り出す
+ Class<?> proxyClass = Proxy.getProxyClass(anInterface.getClassLoader(), anInterface);
+ Constructor<?> constructor;
+ try {
+ constructor = proxyClass.getConstructor(java.lang.reflect.InvocationHandler.class);
+ }
+ catch (NoSuchMethodException e) {
+ throw new AssertionError(e);
+ }
+ return new Enhance(
+ new ProxyPointcut(anInterface.getName()),
+ new ProxyHandler(constructor, handler));
+ }
+
+ /**
+ * インスタンス生成の禁止。
+ */
+ private ProxyDriver() {
+ throw new AssertionError();
+ }
+
+ /**
+ * プロクシ作成の対象となるインターフェースプロダクト生成へのポイントカット。
+ * @version $Date$
+ * @author Suguru ARAKAWA
+ */
+ private static class ProxyPointcut implements InvocationPointcut {
+
+ /**
+ * Proxyインスタンス生成の対象とするインターフェースの名前
+ */
+ private String targetName;
+
+ /**
+ * インスタンスを生成する。
+ * @param targetName 対象インターフェースの名称
+ * @throws NullPointerException 引数に{@code null}が指定された場合
+ */
+ public ProxyPointcut(String targetName) {
+ if (targetName == null) {
+ throw new NullPointerException("targetName is null"); //$NON-NLS-1$
+ }
+ this.targetName = targetName;
+ }
+
+ public boolean isTarget(CtClass self, CtBehavior behavior) {
+ // インスタンス生成のみ
+ if ((behavior instanceof CtConstructor) == false) {
+ return false;
+ }
+
+ // 対象インターフェースのみ
+ if (self.getName().equals(targetName) == false) {
+ return false;
+ }
+ return true;
+ }
+ }
+
+ private static class ProxyHandler implements InvocationHandler {
+
+ /**
+ * Proxyインスタンスを生成するためのコンストラクタ。
+ */
+ private Constructor<?> proxyCreator;
+
+ /**
+ * Proxyインスタンスに渡す{@code java.lang.reflect.InvocationHandler}。
+ */
+ private java.lang.reflect.InvocationHandler handler;
+
+ /**
+ * インスタンスを生成する。
+ * @param proxyCreator
+ * @param handler
+ * @throws NullPointerException 引数に{@code null}が指定された場合
+ */
+ public ProxyHandler(
+ Constructor<?> proxyCreator,
+ java.lang.reflect.InvocationHandler handler) {
+ if (proxyCreator == null) {
+ throw new NullPointerException("proxyCreator is null"); //$NON-NLS-1$
+ }
+ if (handler == null) {
+ throw new NullPointerException("handler is null"); //$NON-NLS-1$
+ }
+ this.proxyCreator = proxyCreator;
+ this.handler = handler;
+ }
+
+ /**
+ * この実装では{@code invocation.proceed()}を実行せずに、
+ * 代わりにProxyインスタンスを生成して返す。
+ */
+ public Object handle(Invocation invocation) throws Throwable {
+ // ハンドラインスタンスを共有しない方法も考えたい
+ return proxyCreator.newInstance(new Object[] { handler });
+ }
+ }
+}
Property changes on: leto/factory-enhancer-example/branches/interface-enhancer/src/main/java/org/jiemamy/util/enhancer/example/_10proxy/ProxyDriver.java
___________________________________________________________________
Added: svn:mime-type
+ text/plain