test/044-proxy/src/BasicTest.java - platform/art - Gitiles

 /*
  * Copyright (C) 2008 The Android Open Source Project
  *
  * 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.
  */

 import java.lang.annotation.Annotation;
 import java.lang.reflect.InvocationHandler;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Proxy;
 import java.util.Arrays;
 import java.util.Comparator;

 /**
  * Do some basic tests.
  */
 public class BasicTest {

     public static void main(String[] args) {
         Mix proxyMe = new Mix();
         Object proxy = createProxy(proxyMe);

         if (!Proxy.isProxyClass(proxy.getClass()))
             System.err.println("not a proxy class?");
         if (Proxy.getInvocationHandler(proxy) == null)
             System.err.println("ERROR: Proxy.getInvocationHandler is null");

         /* take it for a spin; verifies instanceof constraint */
         Shapes shapes = (Shapes) proxy;
         shapes.circle(3);
         shapes.rectangle(10, 20);
         shapes.blob();
         Quads quads = (Quads) proxy;
         quads.rectangle(15, 25);
         quads.trapezoid(6, 81.18, 4);
         Colors colors = (Colors) proxy;
         colors.red(1.0f);
         colors.blue(777);
         colors.mauve("sorry");
         colors.blob();
         Trace trace = (Trace) proxy;
         trace.getTrace();

         try {
             shapes.upChuck();
             System.out.println("Didn't get expected exception");
         } catch (IndexOutOfBoundsException ioobe) {
             System.out.println("Got expected ioobe");
         }
         try {
             shapes.upCheck();
             System.out.println("Didn't get expected exception");
         } catch (InterruptedException ie) {
             System.out.println("Got expected ie");
         }

         /*
          * Exercise annotations on Proxy classes.  This is mostly to ensure
          * that annotation calls work correctly on generated classes.
          */
         System.out.println("");
         Method[] methods = proxy.getClass().getDeclaredMethods();
         Arrays.sort(methods, new Comparator<Method>() {
           public int compare(Method o1, Method o2) {
             int result = o1.getName().compareTo(o2.getName());
             if (result != 0) {
                 return result;
             }
             return o1.getReturnType().getName().compareTo(o2.getReturnType().getName());
           }
         });
         System.out.println("Proxy interfaces: " +
             Arrays.deepToString(proxy.getClass().getInterfaces()));
         System.out.println("Proxy methods: " + Arrays.deepToString(methods));
         Method meth = methods[methods.length -1];
         System.out.println("Decl annos: " + Arrays.deepToString(meth.getDeclaredAnnotations()));
         Annotation[][] paramAnnos = meth.getParameterAnnotations();
         System.out.println("Param annos (" + paramAnnos.length + ") : "
             + Arrays.deepToString(paramAnnos));
         System.out.println("Modifiers: " + meth.getModifiers());
     }

     static Object createProxy(Object proxyMe) {
         /* declare an object that will handle the method calls */
         InvocationHandler handler = new MyInvocationHandler(proxyMe);

         /* create the proxy class */
         Class proxyClass = Proxy.getProxyClass(Shapes.class.getClassLoader(),
                             new Class[] { Quads.class, Colors.class, Trace.class });

         /* create a proxy object, passing the handler object in */
         Object proxy = null;
         try {
             Constructor<Class> cons;
             cons = proxyClass.getConstructor(
                             new Class[] { InvocationHandler.class });
             //System.out.println("Constructor is " + cons);
             proxy = cons.newInstance(new Object[] { handler });
         } catch (NoSuchMethodException nsme) {
             System.err.println("failed: " + nsme);
         } catch (InstantiationException ie) {
             System.err.println("failed: " + ie);
         } catch (IllegalAccessException ie) {
             System.err.println("failed: " + ie);
         } catch (InvocationTargetException ite) {
             System.err.println("failed: " + ite);
         }

         return proxy;
     }
 }

 /*
  * Some interfaces.
  */
 interface Shapes {
     public void circle(int r);
     public int rectangle(int x, int y);

     public String blob();

     public R0base checkMe();
     public void upChuck();
     public void upCheck() throws InterruptedException;
 }

 interface Quads extends Shapes {
     public int rectangle(int x, int y);
     public int square(int x, int y);
     public int trapezoid(int x, double off, int y);

     public R0a checkMe();
 }

 /*
  * More interfaces.
  */
 interface Colors {
     public int red(float howRed);
     public int green(double howGreen);
     public double blue(int howBlue);
     public int mauve(String apology);

     public String blob();

     public R0aa checkMe();
 }

 interface Trace {
     public void getTrace();
 }

 /*
  * Some return types.
  */
 class R0base { int mBlah;  }
 class R0a extends R0base { int mBlah_a;  }
 class R0aa extends R0a { int mBlah_aa;  }


 /*
  * A class that implements them all.
  */
 class Mix implements Quads, Colors {
     public void circle(int r) {
         System.out.println("--- circle " + r);
     }
     public int rectangle(int x, int y) {
         System.out.println("--- rectangle " + x + "," + y);
         return 4;
     }
     public int square(int x, int y) {
         System.out.println("--- square " + x + "," + y);
         return 4;
     }
     public int trapezoid(int x, double off, int y) {
         System.out.println("--- trap " + x + "," + y + "," + off);
         return 8;
     }
     public String blob() {
         System.out.println("--- blob");
         return "mix";
     }

     public int red(float howRed) {
         System.out.println("--- red " + howRed);
         return 0;
     }
     public int green(double howGreen) {
         System.out.println("--- green " + howGreen);
         return 1;
     }
     public double blue(int howBlue) {
         System.out.println("--- blue " + howBlue);
         return 2.54;
     }
     public int mauve(String apology) {
         System.out.println("--- mauve " + apology);
         return 3;
     }

     public R0aa checkMe() {
         return null;
     }
     public void upChuck() {
         throw new IndexOutOfBoundsException("upchuck");
     }
     public void upCheck() throws InterruptedException {
         throw new InterruptedException("upcheck");
     }
 }

 /*
  * Invocation handler, defining the implementation of the proxy functions.
  */
 class MyInvocationHandler implements InvocationHandler {
     Object mObj;

     public MyInvocationHandler(Object obj) {
         mObj = obj;
     }

     /*
      * This is called when anything gets invoked in the proxy object.
      */
     public Object invoke(Object proxy, Method method, Object[] args)
         throws Throwable {

         Object result = null;

         // Trap Object calls.  This is important here to avoid a recursive
         // invocation of toString() in the print statements below.
         if (method.getDeclaringClass() == java.lang.Object.class) {
             //System.out.println("!!! object " + method.getName());
             if (method.getName().equals("toString")) {
                 return super.toString();
             } else if (method.getName().equals("hashCode")) {
                 return Integer.valueOf(super.hashCode());
             } else if (method.getName().equals("equals")) {
                 return Boolean.valueOf(super.equals(args[0]));
             } else {
                 throw new RuntimeException("huh?");
             }
         }

         if (method.getDeclaringClass() == Trace.class) {
           if (method.getName().equals("getTrace")) {
             StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
             for (int i = 0; i < stackTrace.length; i++) {
                 StackTraceElement ste = stackTrace[i];
                 if (ste.getMethodName().equals("getTrace")) {
                   System.out.println(ste.getClassName() + "." + ste.getMethodName() + " " +
                                      ste.getFileName() + ":" + ste.getLineNumber());
                 }
             }
             return null;
           }
         }

         if (method.getDeclaringClass() == Trace.class) {
           if (method.getName().equals("getTrace")) {
             StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
             for (int i = 0; i < stackTrace.length; i++) {
                 StackTraceElement ste = stackTrace[i];
                 if (ste.getMethodName().equals("getTrace")) {
                   System.out.println(ste.getClassName() + "." + ste.getMethodName() + " " +
                                      ste.getFileName() + ":" + ste.getLineNumber());
                 }
             }
             return null;
           }
         }

         System.out.println("Invoke " + method);
         if (args == null || args.length == 0) {
             System.out.println(" (no args)");
         } else {
             for (int i = 0; i < args.length; i++)
                 System.out.println(" " + i + ": " + args[i]);
         }

         try {
             if (true) {
                 result = method.invoke(mObj, args);
             } else {
                 result = -1;
             }
             System.out.println("Success: method " + method.getName()
                 + " res=" + result);
         } catch (InvocationTargetException ite) {
             throw ite.getTargetException();
         } catch (IllegalAccessException iae) {
             throw new RuntimeException(iae);
         }
         return result;
     }
 }
	/*
	* Copyright (C) 2008 The Android Open Source Project
	*
	* 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.
	*/

	import java.lang.annotation.Annotation;
	import java.lang.reflect.InvocationHandler;
	import java.lang.reflect.InvocationTargetException;
	import java.lang.reflect.Constructor;
	import java.lang.reflect.Field;
	import java.lang.reflect.Method;
	import java.lang.reflect.Proxy;
	import java.util.Arrays;
	import java.util.Comparator;

	/**
	* Do some basic tests.
	*/
	public class BasicTest {

	public static void main(String[] args) {
	Mix proxyMe = new Mix();
	Object proxy = createProxy(proxyMe);

	if (!Proxy.isProxyClass(proxy.getClass()))
	System.err.println("not a proxy class?");
	if (Proxy.getInvocationHandler(proxy) == null)
	System.err.println("ERROR: Proxy.getInvocationHandler is null");

	/* take it for a spin; verifies instanceof constraint */
	Shapes shapes = (Shapes) proxy;
	shapes.circle(3);
	shapes.rectangle(10, 20);
	shapes.blob();
	Quads quads = (Quads) proxy;
	quads.rectangle(15, 25);
	quads.trapezoid(6, 81.18, 4);
	Colors colors = (Colors) proxy;
	colors.red(1.0f);
	colors.blue(777);
	colors.mauve("sorry");
	colors.blob();
	Trace trace = (Trace) proxy;
	trace.getTrace();

	try {
	shapes.upChuck();
	System.out.println("Didn't get expected exception");
	} catch (IndexOutOfBoundsException ioobe) {
	System.out.println("Got expected ioobe");
	}
	try {
	shapes.upCheck();
	System.out.println("Didn't get expected exception");
	} catch (InterruptedException ie) {
	System.out.println("Got expected ie");
	}

	/*
	* Exercise annotations on Proxy classes. This is mostly to ensure
	* that annotation calls work correctly on generated classes.
	*/
	System.out.println("");
	Method[] methods = proxy.getClass().getDeclaredMethods();
	Arrays.sort(methods, new Comparator<Method>() {
	public int compare(Method o1, Method o2) {
	int result = o1.getName().compareTo(o2.getName());
	if (result != 0) {
	return result;
	}
	return o1.getReturnType().getName().compareTo(o2.getReturnType().getName());
	}
	});
	System.out.println("Proxy interfaces: " +
	Arrays.deepToString(proxy.getClass().getInterfaces()));
	System.out.println("Proxy methods: " + Arrays.deepToString(methods));
	Method meth = methods[methods.length -1];
	System.out.println("Decl annos: " + Arrays.deepToString(meth.getDeclaredAnnotations()));
	Annotation[][] paramAnnos = meth.getParameterAnnotations();
	System.out.println("Param annos (" + paramAnnos.length + ") : "
	+ Arrays.deepToString(paramAnnos));
	System.out.println("Modifiers: " + meth.getModifiers());
	}

	static Object createProxy(Object proxyMe) {
	/* declare an object that will handle the method calls */
	InvocationHandler handler = new MyInvocationHandler(proxyMe);

	/* create the proxy class */
	Class proxyClass = Proxy.getProxyClass(Shapes.class.getClassLoader(),
	new Class[] { Quads.class, Colors.class, Trace.class });

	/* create a proxy object, passing the handler object in */
	Object proxy = null;
	try {
	Constructor<Class> cons;
	cons = proxyClass.getConstructor(
	new Class[] { InvocationHandler.class });
	//System.out.println("Constructor is " + cons);
	proxy = cons.newInstance(new Object[] { handler });
	} catch (NoSuchMethodException nsme) {
	System.err.println("failed: " + nsme);
	} catch (InstantiationException ie) {
	System.err.println("failed: " + ie);
	} catch (IllegalAccessException ie) {
	System.err.println("failed: " + ie);
	} catch (InvocationTargetException ite) {
	System.err.println("failed: " + ite);
	}

	return proxy;
	}
	}

	/*
	* Some interfaces.
	*/
	interface Shapes {
	public void circle(int r);
	public int rectangle(int x, int y);

	public String blob();

	public R0base checkMe();
	public void upChuck();
	public void upCheck() throws InterruptedException;
	}

	interface Quads extends Shapes {
	public int rectangle(int x, int y);
	public int square(int x, int y);
	public int trapezoid(int x, double off, int y);

	public R0a checkMe();
	}

	/*
	* More interfaces.
	*/
	interface Colors {
	public int red(float howRed);
	public int green(double howGreen);
	public double blue(int howBlue);
	public int mauve(String apology);

	public String blob();

	public R0aa checkMe();
	}

	interface Trace {
	public void getTrace();
	}

	/*
	* Some return types.
	*/
	class R0base { int mBlah; }
	class R0a extends R0base { int mBlah_a; }
	class R0aa extends R0a { int mBlah_aa; }


	/*
	* A class that implements them all.
	*/
	class Mix implements Quads, Colors {
	public void circle(int r) {
	System.out.println("--- circle " + r);
	}
	public int rectangle(int x, int y) {
	System.out.println("--- rectangle " + x + "," + y);
	return 4;
	}
	public int square(int x, int y) {
	System.out.println("--- square " + x + "," + y);
	return 4;
	}
	public int trapezoid(int x, double off, int y) {
	System.out.println("--- trap " + x + "," + y + "," + off);
	return 8;
	}
	public String blob() {
	System.out.println("--- blob");
	return "mix";
	}

	public int red(float howRed) {
	System.out.println("--- red " + howRed);
	return 0;
	}
	public int green(double howGreen) {
	System.out.println("--- green " + howGreen);
	return 1;
	}
	public double blue(int howBlue) {
	System.out.println("--- blue " + howBlue);
	return 2.54;
	}
	public int mauve(String apology) {
	System.out.println("--- mauve " + apology);
	return 3;
	}

	public R0aa checkMe() {
	return null;
	}
	public void upChuck() {
	throw new IndexOutOfBoundsException("upchuck");
	}
	public void upCheck() throws InterruptedException {
	throw new InterruptedException("upcheck");
	}
	}

	/*
	* Invocation handler, defining the implementation of the proxy functions.
	*/
	class MyInvocationHandler implements InvocationHandler {
	Object mObj;

	public MyInvocationHandler(Object obj) {
	mObj = obj;
	}

	/*
	* This is called when anything gets invoked in the proxy object.
	*/
	public Object invoke(Object proxy, Method method, Object[] args)
	throws Throwable {

	Object result = null;

	// Trap Object calls. This is important here to avoid a recursive
	// invocation of toString() in the print statements below.
	if (method.getDeclaringClass() == java.lang.Object.class) {
	//System.out.println("!!! object " + method.getName());
	if (method.getName().equals("toString")) {
	return super.toString();
	} else if (method.getName().equals("hashCode")) {
	return Integer.valueOf(super.hashCode());
	} else if (method.getName().equals("equals")) {
	return Boolean.valueOf(super.equals(args[0]));
	} else {
	throw new RuntimeException("huh?");
	}
	}

	if (method.getDeclaringClass() == Trace.class) {
	if (method.getName().equals("getTrace")) {
	StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
	for (int i = 0; i < stackTrace.length; i++) {
	StackTraceElement ste = stackTrace[i];
	if (ste.getMethodName().equals("getTrace")) {
	System.out.println(ste.getClassName() + "." + ste.getMethodName() + " " +
	ste.getFileName() + ":" + ste.getLineNumber());
	}
	}
	return null;
	}
	}

	if (method.getDeclaringClass() == Trace.class) {
	if (method.getName().equals("getTrace")) {
	StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
	for (int i = 0; i < stackTrace.length; i++) {
	StackTraceElement ste = stackTrace[i];
	if (ste.getMethodName().equals("getTrace")) {
	System.out.println(ste.getClassName() + "." + ste.getMethodName() + " " +
	ste.getFileName() + ":" + ste.getLineNumber());
	}
	}
	return null;
	}
	}

	System.out.println("Invoke " + method);
	if (args == null \|\| args.length == 0) {
	System.out.println(" (no args)");
	} else {
	for (int i = 0; i < args.length; i++)
	System.out.println(" " + i + ": " + args[i]);
	}

	try {
	if (true) {
	result = method.invoke(mObj, args);
	} else {
	result = -1;
	}
	System.out.println("Success: method " + method.getName()
	+ " res=" + result);
	} catch (InvocationTargetException ite) {
	throw ite.getTargetException();
	} catch (IllegalAccessException iae) {
	throw new RuntimeException(iae);
	}
	return result;
	}
	}