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108 lines (92 loc) · 2.77 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.
*/
// BasicDBObject.java
package com.mongodb;
import com.mongodb.util.JSON;
import org.bson.BasicBSONObject;
import java.util.Map;
/**
* a basic implementation of bson object that is mongo specific.
* A <code>DBObject</code> can be created as follows, using this class:
* <blockquote><pre>
* DBObject obj = new BasicDBObject();
* obj.put( "foo", "bar" );
* </pre></blockquote>
*/
public class BasicDBObject extends BasicBSONObject implements DBObject {
private static final long serialVersionUID = -4415279469780082174L;
/**
* Creates an empty object.
*/
public BasicDBObject(){
}
/**
* creates an empty object
* @param size an estimate of number of fields that will be inserted
*/
public BasicDBObject(int size){
super(size);
}
/**
* creates an object with the given key/value
* @param key key under which to store
* @param value value to stor
*/
public BasicDBObject(String key, Object value){
super(key, value);
}
/**
* Creates an object from a map.
* @param m map to convert
*/
public BasicDBObject(Map m) {
super(m);
}
public boolean isPartialObject(){
return _isPartialObject;
}
public void markAsPartialObject(){
_isPartialObject = true;
}
/**
* Returns a JSON serialization of this object
* @return JSON serialization
*/
@Override
public String toString(){
return JSON.serialize( this );
}
@Override
public BasicDBObject append( String key , Object val ){
put( key , val );
return this;
}
public Object copy() {
// copy field values into new object
BasicDBObject newobj = new BasicDBObject(this.toMap());
// need to clone the sub obj
for (String field : keySet()) {
Object val = get(field);
if (val instanceof BasicDBObject) {
newobj.put(field, ((BasicDBObject)val).copy());
} else if (val instanceof BasicDBList) {
newobj.put(field, ((BasicDBList)val).copy());
}
}
return newobj;
}
private boolean _isPartialObject;
}