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| HistoryServiceProvider.java | 0% | 0% | 0% | 0% |
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/*
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* EJTools, the Enterprise Java Tools
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*
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* Distributable under LGPL license.
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* See terms of license at www.gnu.org.
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*/
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package org.ejtools.adwt.service;
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import java.beans.beancontext.BeanContextServices;
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import java.net.URL;
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import java.util.Iterator;
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import java.util.Vector;
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import javax.swing.Action;
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import org.apache.log4j.Logger;
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import org.ejtools.adwt.action.Command;
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import org.ejtools.adwt.action.CommandAction;
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import org.ejtools.adwt.action.file.FileHistoryAction;
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import org.ejtools.adwt.action.file.FileHistoryActionTop;
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import org.ejtools.beans.beancontext.CustomBeanContextServiceProvider;
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import org.ejtools.util.KeyLimitedStack;
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/**
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* Description of the Class
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*
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* @author Laurent Etiemble
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* @version $Revision: 1.5 $
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* @todo Javadoc to complete
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*/
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public class HistoryServiceProvider extends CustomBeanContextServiceProvider implements HistoryService |
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{
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/** Description of the Field */
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protected HistoryService.Holder holder = null; |
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/** Description of the Field */
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protected int maxHistory; |
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/** Description of the Field */
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protected Vector menus = null; |
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/** Description of the Field */
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protected HistoryService service = null; |
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/** Description of the Field */
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protected KeyLimitedStack stack = null; |
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/** Description of the Field */
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private static Logger logger = Logger.getLogger(HistoryServiceProvider.class); |
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/** Description of the Field */
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protected final static int MAX_WIDTH = 30; |
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/**
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* Constructor for the HistoryServiceProvider object
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*
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* @param maxHistory Description of Parameter
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* @param holder Description of Parameter
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*/
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public HistoryServiceProvider(HistoryService.Holder holder, int maxHistory) |
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{
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this.service = this; |
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this.holder = holder;
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this.maxHistory = maxHistory;
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this.stack = new KeyLimitedStack(maxHistory); |
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this.menus = new Vector(maxHistory); |
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} |
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/**
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* Gets the currentServiceSelectors attribute of the HistoryServiceProvider object
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*
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* @param bcs Description of Parameter
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* @param serviceClass Description of Parameter
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* @return The currentServiceSelectors value
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*/
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public Iterator getCurrentServiceSelectors(BeanContextServices bcs, Class serviceClass)
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{
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return new Vector().iterator(); |
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} |
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/**
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* Gets the service attribute of the HistoryServiceProvider object
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*
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* @param bcs Description of Parameter
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* @param requestor Description of Parameter
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* @param serviceClass Description of Parameter
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* @param serviceSelector Description of Parameter
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* @return The service value
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*/
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public Object getService(BeanContextServices bcs, Object requestor, Class serviceClass, Object serviceSelector)
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{
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return service;
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} |
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/**
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* Description of the Method
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*
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* @param url Description of Parameter
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* @param context Description of Parameter
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*/
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public void push(URL url, Object context) |
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{
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this.stack.push(new HistoryContext(url, context)); |
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for (int i = 0; i < stack.size(); i++) |
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{
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HistoryContext hc = (HistoryContext) this.stack.elementAt(i);
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URL theUrl = hc.getURL(); |
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String s = theUrl.toString(); |
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if (s.length() > MAX_WIDTH)
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{
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s = "" + (i + 1) + ": " + theUrl.getProtocol() + "..." + s.substring(s.length() - 25); |
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} |
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else
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{
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s = "" + (i + 1) + ": " + theUrl.toString(); |
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} |
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CommandAction action = (CommandAction) menus.elementAt(i); |
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action.putValue(Action.NAME, s); |
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action.setEnabled(true);
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} |
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} |
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/**
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* Description of the Method
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*
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* @param bcs Description of Parameter
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* @param requestor Description of Parameter
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* @param service Description of Parameter
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*/
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public void releaseService(BeanContextServices bcs, Object requestor, Object service) { } |
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/**
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* @return The serviceClass value
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*/
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protected Class[] getServiceClass()
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{
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return new Class[]{HistoryService.class}; |
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} |
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/** Description of the Method */
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protected void initializeBeanContextResources() |
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{
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super.initializeBeanContextResources();
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CommandAction action; |
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for (int i = 0; i < this.maxHistory; i++) |
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{
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if (i == 0)
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{
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action = new FileHistoryActionTop(
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new FileHistoryCommand(i)
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); |
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} |
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else
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{
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action = new FileHistoryAction(
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new FileHistoryCommand(i)
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); |
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} |
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action.setEnabled(false);
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menus.add(action); |
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this.add(action);
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} |
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logger.debug("HistoryService added");
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} |
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/**
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* Description of the Class
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*
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* @author letiembl
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* @version $Revision: 1.5 $
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*/
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private class FileHistoryCommand implements Command |
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{
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/** Description of the Field */
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private int position; |
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/**
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* Constructor for the FileHistoryCommand object
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*
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* @param position Description of Parameter
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*/
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public FileHistoryCommand(int position) |
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{
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this.position = position;
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} |
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/** Description of the Method */
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public void execute() |
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{
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HistoryContext hc = (HistoryContext) HistoryServiceProvider.this.stack.elementAt(position);
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logger.info("Loading " + hc.getURL());
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HistoryServiceProvider.this.holder.loadResource(hc.getURL(), hc.getContext());
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} |
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} |
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/**
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* Description of the Class
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*
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* @author letiembl
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* @version $Revision: 1.5 $
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*/
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private class HistoryContext |
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{
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/** Description of the Field */
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private Object context;
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/** Description of the Field */
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private URL url;
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/**
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* Constructor for the HistoryContext object
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*
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* @param url Description of Parameter
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* @param context Description of Parameter
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*/
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public HistoryContext(URL url, Object context)
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{
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this.url = url;
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this.context = context;
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} |
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/**
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* Description of the Method
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*
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* @param o Description of Parameter
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* @return Description of the Returned Value
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*/
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| 240 | 0 |
public boolean equals(Object o) |
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{
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logger.debug("Object to test " + ((HistoryContext) o).getURL().toString());
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logger.debug("The URL " + this.url.toString()); |
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return ((HistoryContext) o).getURL().equals(this.url); |
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} |
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/**
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* Gets the context attribute of the HistoryContext object
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*
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* @return The context value
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*/
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public Object getContext()
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{
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return this.context; |
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} |
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/**
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* Gets the uRL attribute of the HistoryContext object
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*
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* @return The uRL value
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*/
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| 264 | 0 |
public URL getURL()
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{
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return this.url; |
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} |
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} |
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} |
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