How to use

getSnapshot

method

in

org.hibernate.collection.internal.PersistentIdentifierBag

@Override
public boolean needsInserting(Object entry, int i, Type elemType)
    throws HibernateException {
  final Map snap = (Map) getSnapshot();
  final Object id = identifiers.get( i );
  return entry != null
      && ( id==null || snap.get( id )==null );
}

@Override
public Object getSnapshotElement(Object entry, int i) {
  final Map snap = (Map) getSnapshot();
  final Object id = identifiers.get( i );
  return snap.get( id );
}

@Override
@SuppressWarnings("unchecked")
public Iterator getDeletes(CollectionPersister persister, boolean indexIsFormula) throws HibernateException {
  final Map snap = (Map) getSnapshot();
  final List deletes = new ArrayList( snap.keySet() );
  for ( int i=0; i<values.size(); i++ ) {
    if ( values.get( i ) != null ) {
      deletes.remove( identifiers.get( i ) );
    }
  }
  return deletes.iterator();
}

@Override
public boolean needsUpdating(Object entry, int i, Type elemType) throws HibernateException {
  if ( entry == null ) {
    return false;
  }
  final Map snap = (Map) getSnapshot();
  final Object id = identifiers.get( i );
  if ( id == null ) {
    return false;
  }
  final Object old = snap.get( id );
  return old != null && elemType.isDirty( old, entry, getSession() );
}

@Override
public boolean equalsSnapshot(CollectionPersister persister) throws HibernateException {
  final Type elementType = persister.getElementType();
  final Map snap = (Map) getSnapshot();
  if ( snap.size()!= values.size() ) {
    return false;
  }
  for ( int i=0; i<values.size(); i++ ) {
    final Object value = values.get( i );
    final Object id = identifiers.get( i );
    if ( id == null ) {
      return false;
    }
    final Object old = snap.get( id );
    if ( elementType.isDirty( old, value, getSession() ) ) {
      return false;
    }
  }
  return true;
}

public boolean needsInserting(Object entry, int i, Type elemType)
  throws HibernateException {
  Map snap = (Map) getSnapshot();
  Object id = identifiers.get( i );
  return entry!=null && ( id==null || snap.get(id)==null );
}

public Object getSnapshotElement(Object entry, int i) {
  Map snap = (Map) getSnapshot();
  Object id = identifiers.get( i );
  return snap.get(id);
}

@Override
public boolean needsInserting(Object entry, int i)
    throws HibernateException {
  final Map snap = (Map) getSnapshot();
  final Object id = identifiers.get( i );
  return entry != null
      && ( id==null || snap.get( id )==null );
}

public Object getSnapshotElement(Object entry, int i) {
  Map snap = (Map) getSnapshot();
  Object id = identifiers.get( i );
  return snap.get(id);
}

@Override
public E getSnapshotElement(Object entry, int index) {
  final Map<?,E> snap = (Map) getSnapshot();
  final Object id = identifiers.get( index );
  return snap.get( id );
}

public boolean needsInserting(Object entry, int i, Type elemType)
  throws HibernateException {
  Map snap = (Map) getSnapshot();
  Object id = identifiers.get( i );
  return entry!=null && ( id==null || snap.get(id)==null );
}

public Iterator getDeletes(CollectionPersister persister, boolean indexIsFormula) throws HibernateException {
  Map snap = (Map) getSnapshot();
  List deletes = new ArrayList( snap.keySet() );
  for ( int i=0; i<values.size(); i++ ) {
    if ( values.get(i)!=null ) deletes.remove( identifiers.get( i ) );
  }
  return deletes.iterator();
}

@Override
@SuppressWarnings("unchecked")
public Iterator getDeletes(PersistentCollectionDescriptor descriptor, boolean indexIsFormula) throws HibernateException {
  final Map snap = (Map) getSnapshot();
  final List deletes = new ArrayList( snap.keySet() );
  for ( int i=0; i<values.size(); i++ ) {
    if ( values.get( i ) != null ) {
      deletes.remove( identifiers.get( i ) );
    }
  }
  return deletes.iterator();
}

public Iterator getDeletes(CollectionPersister persister, boolean indexIsFormula) throws HibernateException {
  Map snap = (Map) getSnapshot();
  List deletes = new ArrayList( snap.keySet() );
  for ( int i=0; i<values.size(); i++ ) {
    if ( values.get(i)!=null ) deletes.remove( identifiers.get( i ) );
  }
  return deletes.iterator();
}

public boolean equalsSnapshot(CollectionPersister persister) throws HibernateException {
  Type elementType = persister.getElementType();
  Map snap = (Map) getSnapshot();
  if ( snap.size()!= values.size() ) return false;
  for ( int i=0; i<values.size(); i++ ) {
    Object value = values.get(i);
    Object id = identifiers.get( i );
    if (id==null) return false;
    Object old = snap.get(id);
    if ( elementType.isDirty( old, value, getSession() ) ) return false;
  }
  return true;
}

public boolean needsUpdating(Object entry, int i, Type elemType) throws HibernateException {
  if (entry==null) return false;
  Map snap = (Map) getSnapshot();
  Object id = identifiers.get( i );
  if (id==null) return false;
  Object old = snap.get(id);
  return old!=null && elemType.isDirty( old, entry, getSession() );
}

public boolean needsUpdating(Object entry, int i, Type elemType) throws HibernateException {
  if (entry==null) return false;
  Map snap = (Map) getSnapshot();
  Object id = identifiers.get( i );
  if (id==null) return false;
  Object old = snap.get(id);
  return old!=null && elemType.isDirty( old, entry, getSession() );
}

public boolean equalsSnapshot(CollectionPersister persister) throws HibernateException {
  Type elementType = persister.getElementType();
  Map snap = (Map) getSnapshot();
  if ( snap.size()!= values.size() ) return false;
  for ( int i=0; i<values.size(); i++ ) {
    Object value = values.get(i);
    Object id = identifiers.get( i );
    if (id==null) return false;
    Object old = snap.get(id);
    if ( elementType.isDirty( old, value, getSession() ) ) return false;
  }
  return true;
}

@Override
public boolean equalsSnapshot(PersistentCollectionDescriptor<?,?,E> collectionDescriptor) throws HibernateException {
  final Map snap = (Map) getSnapshot();
  if ( snap.size()!= values.size() ) {
    return false;
  }
  for ( int i=0; i<values.size(); i++ ) {
    final Object value = values.get( i );
    final Object id = identifiers.get( i );
    if ( id == null ) {
      return false;
    }
    final Object old = snap.get( id );
    if ( collectionDescriptor.isDirty( old, value, getSession() ) ) {
      return false;
    }
  }
  return true;
}

@Override
public boolean needsUpdating(Object entry, int i) throws HibernateException {
  if ( entry == null ) {
    return false;
  }
  final Map snap = (Map) getSnapshot();
  final Object id = identifiers.get( i );
  if ( id == null ) {
    return false;
  }
  final Object old = snap.get( id );
  return old != null && getCollectionDescriptor().isDirty( old, entry, getSession() );
}