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Groovy example source code file (ForTest.java)
The Groovy ForTest.java source code/* * Copyright 2003-2011 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.codehaus.groovy.classgen; import org.codehaus.groovy.ast.*; import org.codehaus.groovy.ast.expr.VariableExpression; import org.codehaus.groovy.ast.stmt.BlockStatement; import org.codehaus.groovy.ast.stmt.ForStatement; import org.codehaus.groovy.ast.stmt.Statement; import org.codehaus.groovy.runtime.InvokerHelper; import org.codehaus.groovy.runtime.InvokerInvocationException; /** * @author <a href="mailto:james@coredevelopers.net">James Strachan * @author Pilho Kim * @version $Revision: 21496 $ */ public class ForTest extends TestSupport { public void testNonLoop() throws Exception { ClassNode classNode = new ClassNode("Foo", ACC_PUBLIC, ClassHelper.OBJECT_TYPE); classNode.addConstructor(new ConstructorNode(ACC_PUBLIC, null)); Parameter[] parameters = {new Parameter(ClassHelper.OBJECT_TYPE, "coll")}; Statement statement = createPrintlnStatement(new VariableExpression("coll")); classNode.addMethod(new MethodNode("oneParamDemo", ACC_PUBLIC, ClassHelper.VOID_TYPE, parameters, ClassNode.EMPTY_ARRAY, statement)); Class fooClass = loadClass(classNode); assertTrue("Loaded a new class", fooClass != null); Object bean = fooClass.newInstance(); assertTrue("Managed to create bean", bean != null); System.out.println("################ Now about to invoke a method without looping"); Object value = new Integer(10000); try { InvokerHelper.invokeMethod(bean, "oneParamDemo", new Object[]{value}); } catch (InvokerInvocationException e) { System.out.println("Caught: " + e.getCause()); e.getCause().printStackTrace(); fail("Should not have thrown an exception"); } System.out.println("################ Done"); } public void testLoop() throws Exception { ClassNode classNode = new ClassNode("Foo", ACC_PUBLIC, ClassHelper.OBJECT_TYPE); classNode.addConstructor(new ConstructorNode(ACC_PUBLIC, null)); Parameter[] parameters = {new Parameter(ClassHelper.OBJECT_TYPE.makeArray(), "coll")}; Statement loopStatement = createPrintlnStatement(new VariableExpression("i")); ForStatement statement = new ForStatement(new Parameter(ClassHelper.OBJECT_TYPE, "i"), new VariableExpression("coll"), loopStatement); classNode.addMethod(new MethodNode("iterateDemo", ACC_PUBLIC, ClassHelper.VOID_TYPE, parameters, ClassNode.EMPTY_ARRAY, statement)); Class fooClass = loadClass(classNode); assertTrue("Loaded a new class", fooClass != null); Object bean = fooClass.newInstance(); assertTrue("Managed to create bean", bean != null); System.out.println("################ Now about to invoke a method with looping"); Object[] array = {new Integer(1234), "abc", "def"}; try { InvokerHelper.invokeMethod(bean, "iterateDemo", new Object[]{array}); } catch (InvokerInvocationException e) { System.out.println("Caught: " + e.getCause()); e.getCause().printStackTrace(); fail("Should not have thrown an exception"); } System.out.println("################ Done"); } public void testManyParam() throws Exception { ClassNode classNode = new ClassNode("Foo", ACC_PUBLIC, ClassHelper.OBJECT_TYPE); classNode.addConstructor(new ConstructorNode(ACC_PUBLIC, null)); Parameter[] parameters = {new Parameter(ClassHelper.OBJECT_TYPE, "coll1"), new Parameter(ClassHelper.OBJECT_TYPE, "coll2"), new Parameter(ClassHelper.OBJECT_TYPE, "coll3")}; BlockStatement statement = new BlockStatement(); statement.addStatement(createPrintlnStatement(new VariableExpression("coll1"))); statement.addStatement(createPrintlnStatement(new VariableExpression("coll2"))); statement.addStatement(createPrintlnStatement(new VariableExpression("coll3"))); classNode.addMethod(new MethodNode("manyParamDemo", ACC_PUBLIC, ClassHelper.VOID_TYPE, parameters, ClassNode.EMPTY_ARRAY, statement)); Class fooClass = loadClass(classNode); assertTrue("Loaded a new class", fooClass != null); Object bean = fooClass.newInstance(); assertTrue("Managed to create bean", bean != null); System.out.println("################ Now about to invoke a method with many parameters"); Object[] array = {new Integer(1000 * 1000), "foo-", "bar~"}; try { InvokerHelper.invokeMethod(bean, "manyParamDemo", array); } catch (InvokerInvocationException e) { System.out.println("Caught: " + e.getCause()); e.getCause().printStackTrace(); fail("Should not have thrown an exception"); } System.out.println("################ Done"); } } Other Groovy examples (source code examples)Here is a short list of links related to this Groovy ForTest.java source code file: |
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