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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
BuilderSupport.java | 0% | 0% | 0% | 0% |
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/*
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$Id: BuilderSupport.java,v 1.7 2004/07/31 03:37:31 jstrachan Exp $
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Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
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Redistribution and use of this software and associated documentation
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("Software"), with or without modification, are permitted provided
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that the following conditions are met:
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1. Redistributions of source code must retain copyright
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statements and notices. Redistributions must also contain a
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copy of this document.
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2. Redistributions in binary form must reproduce the
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above copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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3. The name "groovy" must not be used to endorse or promote
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products derived from this Software without prior written
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permission of The Codehaus. For written permission,
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please contact info@codehaus.org.
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4. Products derived from this Software may not be called "groovy"
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nor may "groovy" appear in their names without prior written
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permission of The Codehaus. "groovy" is a registered
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trademark of The Codehaus.
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5. Due credit should be given to The Codehaus -
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http://groovy.codehaus.org/
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THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
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NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package groovy.util;
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import groovy.lang.Closure;
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import groovy.lang.GroovyObjectSupport;
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import java.util.List;
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import java.util.Map;
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import org.codehaus.groovy.runtime.InvokerHelper;
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/**
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* An abstract base class for creating arbitrary nested trees of objects
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* or events
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*
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* @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
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* @version $Revision: 1.7 $
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*/
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public abstract class BuilderSupport extends GroovyObjectSupport { |
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private Object current;
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private Closure nameMappingClosure;
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private BuilderSupport proxyBuilder;
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public BuilderSupport() {
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this.proxyBuilder = this; |
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} |
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public BuilderSupport(BuilderSupport proxyBuilder) {
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this(null, proxyBuilder); |
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} |
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public BuilderSupport(Closure nameMappingClosure, BuilderSupport proxyBuilder) {
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this.nameMappingClosure = nameMappingClosure;
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this.proxyBuilder = proxyBuilder;
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} |
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public Object invokeMethod(String methodName, Object args) {
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Object name = getName(methodName); |
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return doInvokeMethod(methodName, name, args);
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} |
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protected Object doInvokeMethod(String methodName, Object name, Object args) {
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Object node = null;
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Closure closure = null;
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List list = InvokerHelper.asList(args); |
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//System.out.println("Called invokeMethod with name: " + name + " arguments: " + list);
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switch (list.size()) {
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case 0:
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break;
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case 1:
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{ |
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Object object = list.get(0); |
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if (object instanceof Map) { |
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node = proxyBuilder.createNode(name, (Map) object); |
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} else if (object instanceof Closure) { |
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closure = (Closure) object; |
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node = proxyBuilder.createNode(name); |
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} else {
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node = proxyBuilder.createNode(name, object); |
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} |
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} |
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break;
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case 2:
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{ |
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Object object1 = list.get(0); |
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Object object2 = list.get(1); |
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if (object1 instanceof Map) { |
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if (object2 instanceof Closure) { |
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closure = (Closure) object2; |
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node = proxyBuilder.createNode(name, (Map) object1); |
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} else {
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node = proxyBuilder.createNode(name, (Map) object1, object2); |
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} |
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} else {
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if (object2 instanceof Closure) { |
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closure = (Closure) object2; |
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node = proxyBuilder.createNode(name, object1); |
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} |
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} |
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} |
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break;
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case 3:
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{ |
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Object attributes = list.get(0); |
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Object value = list.get(1); |
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closure = (Closure) list.get(2); |
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node = proxyBuilder.createNode(name, (Map) attributes, value); |
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} |
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break;
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} |
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if (node == null) { |
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node = proxyBuilder.createNode(name); |
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} |
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if (current != null) { |
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proxyBuilder.setParent(current, node); |
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} |
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if (closure != null) { |
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// push new node on stack
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Object oldCurrent = current; |
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current = node; |
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// lets register the builder as the delegate
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setClosureDelegate(closure, node); |
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closure.call(); |
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current = oldCurrent; |
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} |
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proxyBuilder.nodeCompleted(current, node); |
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return node;
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} |
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/**
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* A strategy method to allow derived builders to use
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* builder-trees and switch in different kinds of builders.
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* This method should call the setDelegate() method on the closure
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* which by default passes in this but if node is-a builder
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* we could pass that in instead (or do something wacky too)
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*
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* @param closure the closure on which to call setDelegate()
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* @param node the node value that we've just created, which could be
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* a builder
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*/
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protected void setClosureDelegate(Closure closure, Object node) { |
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closure.setDelegate(this);
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} |
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protected abstract void setParent(Object parent, Object child); |
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protected abstract Object createNode(Object name);
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protected abstract Object createNode(Object name, Object value);
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protected abstract Object createNode(Object name, Map attributes);
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protected abstract Object createNode(Object name, Map attributes, Object value);
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/**
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* A hook to allow names to be converted into some other object
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* such as a QName in XML or ObjectName in JMX
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* @param methodName
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* @return
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*/
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191 | 0 |
protected Object getName(String methodName) {
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if (nameMappingClosure != null) { |
193 | 0 |
return nameMappingClosure.call(methodName);
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} |
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return methodName;
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} |
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/**
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* A hook to allow nodes to be processed once they have had all of their
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* children applied
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*/
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protected void nodeCompleted(Object parent, Object node) { |
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} |
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protected Object getCurrent() {
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return current;
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} |
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protected void setCurrent(Object current) { |
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this.current = current;
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} |
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} |
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