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51 lines (43 loc) · 1.45 KB
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/*
* Copyright (c) 2008-2014 MongoDB, Inc.
*
* Licensed 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 com.mongodb;
import org.bson.BSONObject;
import org.bson.io.OutputBuffer;
import java.io.IOException;
/**
* Encoder that only knows how to encode BSONObject instances of type LazyDBObject.
*/
public class LazyDBEncoder implements DBEncoder {
/**
* @param buf
* @param o
* @return
* @throws MongoException
*/
@Override
public int writeObject(final OutputBuffer buf, BSONObject o) {
if (!(o instanceof LazyDBObject)) {
throw new IllegalArgumentException("LazyDBEncoder can only encode BSONObject instances of type LazyDBObject");
}
LazyDBObject lazyDBObject = (LazyDBObject) o;
try {
lazyDBObject.pipe(buf);
} catch (IOException e) {
throw new MongoException("Exception serializing a LazyDBObject", e);
}
return lazyDBObject.getBSONSize();
}
}