How to use

buildDelegate

method

in

org.eclipse.persistence.indirection.IndirectMap

/**
 * INTERNAL:
 * Check whether the contents have been read from the database.
 * If they have not, read them and set the delegate.
 * This method used to be synchronized, which caused deadlock.
 */
protected Hashtable<K, V> getDelegate() {
  if (delegate == null) {
    synchronized(this){
      if (delegate == null) {
        delegate = this.buildDelegate();
      }
    }
  }
  return delegate;
}
 

/**
 * INTERNAL:
 * Check whether the contents have been read from the database.
 * If they have not, read them and set the delegate.
 * This method used to be synchronized, which caused deadlock.
 */
protected Hashtable getDelegate() {
  if (delegate == null) {
    synchronized(this){
      if (delegate == null) {
        delegate = this.buildDelegate();
      }
    }
  }
  return delegate;
}
 

/**
 * INTERNAL:
 * Check whether the contents have been read from the database.
 * If they have not, read them and set the delegate.
 * This method used to be synchronized, which caused deadlock.
 */
protected Hashtable<K, V> getDelegate() {
  Hashtable<K, V> newDelegate = this.delegate;
  if (newDelegate == null) {
    synchronized(this){
      newDelegate = this.delegate;
      if (newDelegate == null) {
        this.delegate = newDelegate = this.buildDelegate();
      }
    }
  }
  return newDelegate;
}