Examples of org.apache.lucene.store.Lock

org.apache.lucene.store.Lock

An interprocess mutex lock.

Typical use might look like:

 new Lock.With(directory.makeLock("my.lock")) { public Object doBody() { ... code to execute while locked ... } }.run();

@see Directory#makeLock(String)

  public IndexWriter(Directory d, Analyzer a, final boolean create)
       throws IOException {
    directory = d;
    analyzer = a;


    Lock writeLock = directory.makeLock("write.lock");
    if (!writeLock.obtain())                      // obtain write lock
      throw new IOException("Index locked for write: " + writeLock);
    this.writeLock = writeLock;                   // save it


    synchronized (directory) {        // in- & inter-process sync
      new Lock.With(directory.makeLock("commit.lock")) {

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    if (create) {
      // Clear the write lock in case it's leftover:
      directory.clearLock(WRITE_LOCK_NAME);
    }


    Lock writeLock = directory.makeLock(WRITE_LOCK_NAME);
    if (!writeLock.obtain(writeLockTimeout)) // obtain write lock
      throw new LockObtainFailedException("Index locked for write: " + writeLock);
    this.writeLock = writeLock;                   // save it


    try {
      if (create) {

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