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/*******************************************************************************
* Copyright (c) 2005, 2007 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - Initial API and implementation
*******************************************************************************/
package org.eclipse.wst.server.core.internal;
import java.io.File;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.eclipse.core.runtime.*;
import org.eclipse.wst.server.core.*;
/**
* Helper class that stores preference information for the server tools.
*/
public class ModuleProperties {
private static final String MODULE_DATA_FILE = "modules.xml";
protected static ModuleProperties instance;
protected Map<String, String> modules;
/**
* ModuleProperties constructor.
*/
protected ModuleProperties() {
super();
load();
instance = this;
}
/**
* Return a static instance.
*
* @return a static instance
*/
public static ModuleProperties getInstance() {
if (instance == null)
new ModuleProperties();
return instance;
}
/**
* Load the data.
*/
private void load() {
Trace.trace(Trace.FINEST, "Loading module info");
String filename = ServerPlugin.getInstance().getStateLocation().append(MODULE_DATA_FILE).toOSString();
modules = new HashMap<String, String>();
if (!(new File(filename).exists()))
return;
try {
IMemento memento = XMLMemento.loadMemento(filename);
IMemento[] children = memento.getChildren("module");
int size = children.length;
for (int i = 0; i < size; i++) {
String moduleId = children[i].getString("moduleId");
String serverId = children[i].getString("serverId");
modules.put(moduleId, serverId);
}
} catch (Exception e) {
Trace.trace(Trace.WARNING, "Could not load servers", e);
}
}
private void save(IProgressMonitor monitor) throws CoreException {
String filename = ServerPlugin.getInstance().getStateLocation().append(MODULE_DATA_FILE).toOSString();
try {
XMLMemento memento = XMLMemento.createWriteRoot("modules");
Iterator iterator = modules.keySet().iterator();
while (iterator.hasNext()) {
String moduleId = (String) iterator.next();
String serverId = modules.get(moduleId);
IMemento child = memento.createChild("module");
child.putString("moduleId", moduleId);
child.putString("serverId", serverId);
}
memento.saveToFile(filename);
} catch (Exception e) {
Trace.trace(Trace.SEVERE, "Could not save servers", e);
}
}
/*
* @see ServerCore#getDefaultServer(IModule)
*/
public IServer getDefaultServer(IModule module) {
if (module == null)
throw new IllegalArgumentException();
String serverId = modules.get(module.getId());
if (serverId == null || serverId.length() == 0)
return null;
return ServerCore.findServer(serverId);
}
/*
* @see ServerCore#setDefaultServer(IModule, IServer, IProgressMonitor)
*/
public void setDefaultServer(IModule module, IServer server, IProgressMonitor monitor) throws CoreException {
if (module == null)
throw new IllegalArgumentException();
String newServerId = null;
if (server != null)
newServerId = server.getId();
String serverId = modules.get(module.getId());
if (serverId == null && newServerId == null)
return;
if (serverId != null && serverId.equals(newServerId))
return;
modules.put(module.getId(), newServerId);
save(monitor);
}
public String toString() {
return "ModuleProperties[]";
}
}
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