package org.eclipse.update.internal.core; | |
/* | |
* (c) Copyright IBM Corp. 2000, 2001. | |
* All Rights Reserved. | |
*/ | |
/** | |
*/ | |
import org.eclipse.core.internal.boot.update.*; | |
import java.io.*; | |
import java.net.*; | |
public class UMLock implements IUMLock { | |
File file = null; | |
/** | |
* UMLock constructor comment. | |
*/ | |
public UMLock() { | |
super(); | |
URL lockfileURL = null; | |
try { | |
lockfileURL = new URL(UMEclipseTree.getInstallTreeURL(), IManifestAttributes.UM_LOCK); | |
} catch (MalformedURLException ex) { | |
} | |
file = getFile(lockfileURL); | |
} | |
/** | |
* Checks to see if the UMLock file is there. If yes, returns true | |
*/ | |
public boolean exists() { | |
if (file != null) { | |
if (file.exists() == true) { | |
return true; | |
} | |
} | |
return false; | |
} | |
/** | |
*/ | |
public static File getFile(URL url) { | |
File file = null; | |
if (url != null) { | |
// Convert the URL to a string | |
//---------------------------- | |
String strFilespec = UMEclipseTree.getFileInPlatformString(url); | |
file = new File(strFilespec); | |
} | |
return file; | |
} | |
/** | |
*/ | |
public void remove() { | |
if (exists()) | |
file.delete(); | |
} | |
/** | |
*/ | |
public void set() { | |
set(""); | |
} | |
/** | |
*/ | |
public void set(String msg) { | |
URL lockfileURL = null; | |
try { | |
lockfileURL = new URL(UMEclipseTree.getInstallTreeURL(), IManifestAttributes.UM_LOCK); | |
} catch (MalformedURLException ex) { | |
} | |
// Create a lock file | |
//------------------- | |
Log lockfile = new Log(); | |
try { | |
lockfile.load(lockfileURL); // creates file if it doesn't exist | |
} | |
catch (LogStoreException ex) { | |
return; | |
} | |
// Add an entry | |
//------------- | |
LogEntry lockEntry = new LogEntry( lockfile, msg ); | |
lockfile.addChildEntry( lockEntry ); | |
try { | |
lockfile.save(lockfileURL); | |
} | |
catch (LogStoreException ex) { | |
return; | |
} | |
} | |
} |