stevel 2003/06/12 22:16:36 Added: src/main/org/apache/tools/ant/types Assertions.java Log: This is not yet linked into <java> but its the intent, or maybe commandLineJava: a datatype for configuring assertion options. This'll be a fun one to test :) Revision Changes Path 1.1 ant/src/main/org/apache/tools/ant/types/Assertions.java Index: Assertions.java =================================================================== /* * The Apache Software License, Version 1.1 * * Copyright (c) 2003 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, if * any, must include the following acknowlegement: * "This product includes software developed by the * Apache Software Foundation (http://www.apache.org/)." * Alternately, this acknowlegement may appear in the software itself, * if and wherever such third-party acknowlegements normally appear. * * 4. The names "The Jakarta Project", "Ant", and "Apache Software * Foundation" must not be used to endorse or promote products derived * from this software without prior written permission. For written * permission, please contact [EMAIL PROTECTED] * * 5. Products derived from this software may not be called "Apache" * nor may "Apache" appear in their names without prior written * permission of the Apache Group. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. */ package org.apache.tools.ant.types; import org.apache.tools.ant.BuildException; import java.util.List; import java.util.ArrayList; import java.util.Iterator; /** * implement the assertion datatype. This type describes * assertion settings for the <java> task and derivatives. * One can set the system assertions, and enable/disable those in * packages & classes. * Assertions can only be enabled or disabled when forking Java. * * Example: set system assertions and all org.apache packages except * for ant, and the class org.apache.tools.ant.Main. * <pre> * <assertions enableSystemAssertions="true" > * <enable package="org.apache" /> * <disable package="org.apache.ant" /> * <enable class="org.apache.tools.ant.Main"/> * </assertions> *</pre> * Disable system assertions; enable those in the anonymous package * <pre> * <assertions enableSystemAssertions="false" > * <enable package="..." /> * </assertions> * </pre> * enable assertions in a class called Test * <pre> * <assertions > * <enable class="Test" /> * </assertions> * </pre> * This type is a datatype, so you can declare assertions and use them later * * <pre> * <assertions id="project.assertions" > * <enable project="org.apache.test" /> * </assertions> * * <assertions refid="project.assertions" /> * * </pre> * @since Ant 1.6 * @author steve loughran */ public class Assertions extends DataType { /** * enable/disable sys assertions; null means undefined */ private Boolean enableSystemAssertions; /** * list of type BaseAssertion */ private List assertionList=new ArrayList(); /** * enable assertions * @param assertion */ public void addEnable(EnabledAssertion assertion) { checkChildrenAllowed(); assertionList.add(assertion); } /** * disable assertions * @param assertion */ public void addDisable(EnabledAssertion assertion) { checkChildrenAllowed(); assertionList.add(assertion); } /** * enable or disable system assertions * @param enableSystemAssertions */ public void setEnableSystemAssertions(Boolean enableSystemAssertions) { checkAttributesAllowed(); this.enableSystemAssertions = enableSystemAssertions; } /** * Set the value of the refid attribute. * * <p>Subclasses may need to check whether any other attributes * have been set as well or child elements have been created and * thus override this method. if they do the must call * <code>super.setRefid</code>.</p> */ public void setRefid(Reference ref) { if(assertionList.size()>0 || enableSystemAssertions!=null) { throw tooManyAttributes(); } super.setRefid(ref); } /** * get whatever we are referencing to. This could be ourself. * @return the object that contains the assertion info */ private Assertions getFinalReference() { if(getRefid()==null) { return this; } else { Object o = getRefid().getReferencedObject(getProject()); if(!(o instanceof Assertions)) { throw new BuildException("reference is of wrong type"); } return (Assertions)o; } } /** * apply all the assertions to the command. * @param command */ public void applyAssertions(CommandlineJava command) { Assertions clause=getFinalReference(); //do the system assertions if(Boolean.TRUE.equals(clause.enableSystemAssertions)) { addVmArgument(command,"-enablesystemassertions"); } else if (Boolean.FALSE.equals(clause.enableSystemAssertions)) { addVmArgument(command, "-disablesystemassertions"); } //now any inner assertions Iterator it= clause.assertionList.iterator(); while (it.hasNext()) { BaseAssertion assertion = (BaseAssertion) it.next(); String arg=assertion.toCommand(); addVmArgument(command, arg); } } /** * helper method to add a string JVM argument to a command * @param command * @param arg */ private static void addVmArgument(CommandlineJava command, String arg) { Commandline.Argument argument; argument = command.createVmArgument(); argument.setValue(arg); } /** * base class for our assertion elements. */ public static abstract class BaseAssertion { private String packageName; private String className; /** * name a class * @param className */ public void setClass(String className) { this.className = className; } /** * name a package * @param packageName */ public void setPackage(String packageName) { this.packageName = packageName; } /** * what is the class name? * @return classname or null * @see #setClass */ protected String getClassName() { return className; } /** * what is the package name? * @return package name or null * @see #setPackage */ protected String getPackageName() { return packageName; } /** * get the prefix used to begin the command; -ea or -da. * @return prefix */ public abstract String getCommandPrefix(); /** * create a full command string from this class * @throws BuildException in case of trouble * @return */ public String toCommand() { //catch invalidness if(getPackageName()!=null && getClassName()!=null) { throw new BuildException("Both package and class have been set"); } StringBuffer command=new StringBuffer(getCommandPrefix()); //see if it is a package or a class if(getPackageName() != null) { //packages get a ... prefix command.append(':'); command.append(getPackageName()); if(!command.toString().endsWith("...")) { //append the ... suffix if not there already command.append("..."); } } else if(getClassName()!=null) { //classes just get the classname command.append(':'); command.append(getClassName()); } return command.toString(); } } /** * an enabled assertion enables things */ public static class EnabledAssertion extends BaseAssertion { /** * get the prefix used to begin the command; -ea or -da. * @return prefix */ public String getCommandPrefix() { return "-ea"; } } /** * A disabled assertion disables things */ public static class DisabledAssertion extends BaseAssertion { /** * get the prefix used to begin the command; -ea or -da. * @return prefix */ public String getCommandPrefix() { return "-da"; } } }
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