/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.waveprotocol.wave.model.document.util;
import org.waveprotocol.wave.model.document.Doc;
import org.waveprotocol.wave.model.document.Document;
import org.waveprotocol.wave.model.document.MutableDocumentImpl;
import org.waveprotocol.wave.model.document.ReadableWDocument;
import org.waveprotocol.wave.model.document.operation.Nindo;
import org.waveprotocol.wave.model.operation.OperationSequencer;
import org.waveprotocol.wave.model.util.Preconditions;
/**
* Implementation of Document in terms of generic inner objects
*
* @author danilatos@google.com (Daniel Danilatos)
*/
public class DocumentImpl extends MutableDocumentImpl<Doc.N, Doc.E, Doc.T> implements Document {
/**
* @see MutableDocumentImpl#MutableDocumentImpl(OperationSequencer, ReadableWDocument)
*/
// Unfortunately, java does not permit <N extends N, E extends N & Doc.E, ...>
// which would be required to make this typesafe.
@SuppressWarnings({"unchecked", "rawtypes"})
public DocumentImpl(OperationSequencer<Nindo> sequencer,
ReadableWDocument document) {
super(sequencer, document);
Preconditions.checkArgument(document.getDocumentElement() instanceof Doc.E,
"Document and sequencer must be for nodes of the Doc.* variety");
}
}