Spring Framework example source code file (ComposablePointcutTests.java)

This example Spring Framework source code file (ComposablePointcutTests.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 - Spring Framework tags/keywords

absquatulate_method_matcher, class, class, composablepointcut, composablepointcut, composablepointcuttests, get_age_method_matcher, methodmatcher, methodmatcher, nosuchmethodexception, reflection, setter_method_matcher, staticmethodmatcher, staticmethodmatcher, testcase

The Spring Framework ComposablePointcutTests.java source code

/*
 * Copyright 2002-2005 the original author or authors.
 * 
 * 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.springframework.aop.support;

import java.lang.reflect.Method;

import junit.framework.TestCase;

import org.springframework.aop.ClassFilter;
import org.springframework.aop.MethodMatcher;
import org.springframework.aop.Pointcut;
import org.springframework.beans.TestBean;
import org.springframework.core.NestedRuntimeException;

/**
 * @author Rod Johnson
 */
public class ComposablePointcutTests extends TestCase {
	
	public static MethodMatcher GETTER_METHOD_MATCHER = new StaticMethodMatcher() {
		public boolean matches(Method m, Class targetClass) {
			return m.getName().startsWith("get");
		}
	};
	
	public static MethodMatcher GET_AGE_METHOD_MATCHER = new StaticMethodMatcher() {
		public boolean matches(Method m, Class targetClass) {
			return m.getName().equals("getAge");
		}
	};
	
	public static MethodMatcher ABSQUATULATE_METHOD_MATCHER = new StaticMethodMatcher() {
		public boolean matches(Method m, Class targetClass) {
			return m.getName().equals("absquatulate");
		}
	};
	
	public static MethodMatcher SETTER_METHOD_MATCHER = new StaticMethodMatcher() {
		public boolean matches(Method m, Class targetClass) {
			return m.getName().startsWith("set");
		}
	};
	
	public void testMatchAll() throws NoSuchMethodException {
		Pointcut pc = new ComposablePointcut();
		assertTrue(pc.getClassFilter().matches(Object.class));
		assertTrue(pc.getMethodMatcher().matches(Object.class.getMethod("hashCode", (Class[]) null), Exception.class));
	}

	public void testFilterByClass() throws NoSuchMethodException {
		ComposablePointcut pc = new ComposablePointcut();
	
		assertTrue(pc.getClassFilter().matches(Object.class));
		
		ClassFilter cf = new RootClassFilter(Exception.class);
		pc.intersection(cf);
		assertFalse(pc.getClassFilter().matches(Object.class));
		assertTrue(pc.getClassFilter().matches(Exception.class));
		pc.intersection(new RootClassFilter(NestedRuntimeException.class));
		assertFalse(pc.getClassFilter().matches(Exception.class));
		assertTrue(pc.getClassFilter().matches(NestedRuntimeException.class));
		assertFalse(pc.getClassFilter().matches(String.class));
		pc.union(new RootClassFilter(String.class));
		assertFalse(pc.getClassFilter().matches(Exception.class));
		assertTrue(pc.getClassFilter().matches(String.class));
		assertTrue(pc.getClassFilter().matches(NestedRuntimeException.class));
	}

	public void testUnionMethodMatcher() {
		// Matches the getAge() method in any class
		ComposablePointcut pc = new ComposablePointcut(ClassFilter.TRUE, GET_AGE_METHOD_MATCHER);
		assertFalse(Pointcuts.matches(pc, PointcutsTests.TEST_BEAN_ABSQUATULATE, TestBean.class, null));
		assertTrue(Pointcuts.matches(pc, PointcutsTests.TEST_BEAN_GET_AGE, TestBean.class, null));
		assertFalse(Pointcuts.matches(pc, PointcutsTests.TEST_BEAN_GET_NAME, TestBean.class, null));
		
		pc.union(GETTER_METHOD_MATCHER);
		// Should now match all getter methods
		assertFalse(Pointcuts.matches(pc, PointcutsTests.TEST_BEAN_ABSQUATULATE, TestBean.class, null));
		assertTrue(Pointcuts.matches(pc, PointcutsTests.TEST_BEAN_GET_AGE, TestBean.class, null));
		assertTrue(Pointcuts.matches(pc, PointcutsTests.TEST_BEAN_GET_NAME, TestBean.class, null));
		
		pc.union(ABSQUATULATE_METHOD_MATCHER);
		// Should now match absquatulate() as well 
		assertTrue(Pointcuts.matches(pc, PointcutsTests.TEST_BEAN_ABSQUATULATE, TestBean.class, null));
		assertTrue(Pointcuts.matches(pc, PointcutsTests.TEST_BEAN_GET_AGE, TestBean.class, null));
		assertTrue(Pointcuts.matches(pc, PointcutsTests.TEST_BEAN_GET_NAME, TestBean.class, null));
		// But it doesn't match everything
		assertFalse(Pointcuts.matches(pc, PointcutsTests.TEST_BEAN_SET_AGE, TestBean.class, null));
	}

	public void testIntersectionMethodMatcher() {
		ComposablePointcut pc = new ComposablePointcut();
		assertTrue(pc.getMethodMatcher().matches(PointcutsTests.TEST_BEAN_ABSQUATULATE, TestBean.class));
		assertTrue(pc.getMethodMatcher().matches(PointcutsTests.TEST_BEAN_GET_AGE, TestBean.class));
		assertTrue(pc.getMethodMatcher().matches(PointcutsTests.TEST_BEAN_GET_NAME, TestBean.class));
		pc.intersection(GETTER_METHOD_MATCHER);
		assertFalse(pc.getMethodMatcher().matches(PointcutsTests.TEST_BEAN_ABSQUATULATE, TestBean.class));
		assertTrue(pc.getMethodMatcher().matches(PointcutsTests.TEST_BEAN_GET_AGE, TestBean.class));
		assertTrue(pc.getMethodMatcher().matches(PointcutsTests.TEST_BEAN_GET_NAME, TestBean.class));
		pc.intersection(GET_AGE_METHOD_MATCHER);
		// Use the Pointcuts matches method
		assertFalse(Pointcuts.matches(pc, PointcutsTests.TEST_BEAN_ABSQUATULATE, TestBean.class, null));
		assertTrue(Pointcuts.matches(pc, PointcutsTests.TEST_BEAN_GET_AGE, TestBean.class, null));
		assertFalse(Pointcuts.matches(pc, PointcutsTests.TEST_BEAN_GET_NAME, TestBean.class, null));
	}

	public void testEqualsAndHashCode() throws Exception {
		ComposablePointcut pc1 = new ComposablePointcut();
		ComposablePointcut pc2 = new ComposablePointcut();

		assertEquals(pc1, pc2);
		assertEquals(pc1.hashCode(), pc2.hashCode());

		pc1.intersection(GETTER_METHOD_MATCHER);

		assertFalse(pc1.equals(pc2));
		assertFalse(pc1.hashCode() == pc2.hashCode());

		pc2.intersection(GETTER_METHOD_MATCHER);

		assertEquals(pc1, pc2);
		assertEquals(pc1.hashCode(), pc2.hashCode());

		pc1.union(GET_AGE_METHOD_MATCHER);
		pc2.union(GET_AGE_METHOD_MATCHER);

		assertEquals(pc1, pc2);
		assertEquals(pc1.hashCode(), pc2.hashCode());
	}
}