/* ====================================================================
*
* The ObjectStyle Group Software License, Version 1.0
*
* Copyright (c) 2002 The ObjectStyle Group
* and individual authors of the software. 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
* ObjectStyle Group (http://objectstyle.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "ObjectStyle Group" and "Cayenne"
* must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact andrus@objectstyle.org.
*
* 5. Products derived from this software may not be called "ObjectStyle"
* nor may "ObjectStyle" appear in their names without prior written
* permission of the ObjectStyle 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 OBJECTSTYLE GROUP 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 ObjectStyle Group. For more
* information on the ObjectStyle Group, please see
* <http://objectstyle.org/>.
*
*/
package org.objectstyle.wolips.target;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.ISaveContext;
import org.eclipse.core.resources.ISaveParticipant;
import org.eclipse.core.runtime.Path;
import org.eclipse.jdt.internal.core.builder.JavaBuilder;
import org.eclipse.jdt.internal.core.builder.State;
public class TargetBuilderPersistenceStore implements ISaveParticipant, IResourceChangeListener {
private HashMap _buildStates;
public TargetBuilderPersistenceStore() {
super();
_buildStates = new HashMap();
}
public void setBuildStateForKey(State buildState, String key) {
_buildStates.put(key, buildState);
}
public State buildStateForKey(String key) {
return (State) _buildStates.get(key);
}
public void doneSaving(ISaveContext context) {
TargetBuilderPlugin pluginInstance = TargetBuilderPlugin.getDefault();
int previousSaveNumber = context.getPreviousSaveNumber();
String oldFileName = "save-" + Integer.toString(previousSaveNumber);
File f = pluginInstance.getStateLocation().append(oldFileName).toFile();
f.delete();
}
public void prepareToSave(ISaveContext context) {
// do nothing
}
public void rollback(ISaveContext context) {
TargetBuilderPlugin pluginInstance = TargetBuilderPlugin.getDefault();
// since the save operation has failed, delete the saved state we have
// just written
int saveNumber = context.getSaveNumber();
String saveFileName = "save-" + Integer.toString(saveNumber);
File f = pluginInstance.getStateLocation().append(saveFileName).toFile();
f.delete();
}
public void saving(ISaveContext context) {
switch (context.getKind()) {
case ISaveContext.FULL_SAVE:
TargetBuilderPlugin pluginInstance = TargetBuilderPlugin.getDefault();
int saveNumber = context.getSaveNumber();
String saveFileName = "save-" + Integer.toString(saveNumber);
File f = pluginInstance.getStateLocation().append(saveFileName).toFile();
// if we fail to write, an exception is thrown and we do not update
// the path
writeImportantState(f);
context.map(new Path("save"), new Path(saveFileName));
context.needSaveNumber();
break;
case ISaveContext.PROJECT_SAVE:
// get the project related to this save operation
IProject project = context.getProject();
System.out.println("ISaveContext.PROJECT_SAVE:" + project);
// save its information, if necessary
break;
case ISaveContext.SNAPSHOT:
// System.out.println("ISaveContext.SNAPSHOT:");
// This operation needs to be really fast because
// snapshots can be requested frequently by the
// workspace.
break;
}
}
protected void writeImportantState(File target) {
try {
DataOutputStream out = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(target)));
try {
Set aSet = _buildStates.entrySet();
out.writeInt(aSet.size());
for (Iterator iter = aSet.iterator(); iter.hasNext();) {
Map.Entry element = (Map.Entry) iter.next();
String key = (String) element.getKey();
State value = (State) element.getValue();
out.writeUTF(key);
JavaBuilder.writeState(value, out);
}
} finally {
out.close();
}
} catch (Exception e) {
System.out.println(e);
}
}
protected void readStateFrom(File target) {
try {
DataInputStream in = new DataInputStream(new BufferedInputStream(new FileInputStream(target)));
try {
int stateCount = in.readInt();
for (int i = 0; i < stateCount; i++) {
String key = in.readUTF();
// This is not correct.
State buildState = JavaBuilder.readState(null, in);
setBuildStateForKey(buildState, key);
}
} finally {
in.close();
}
} catch (Exception e) {
System.out.println(e);
}
}
public void resourceChanged(IResourceChangeEvent event) {
IResource res = event.getResource();
String keyPrefix = res.getName() + "/";
for (Iterator iter = _buildStates.entrySet().iterator(); iter.hasNext();) {
Map.Entry element = (Map.Entry) iter.next();
String key = (String) element.getKey();
if (key.startsWith(keyPrefix))
iter.remove();
}
}
}