com.mongodb

Class BasicDBObject

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<String,Object>

org.bson.BasicBSONObject

com.mongodb.BasicDBObject

All Implemented Interfaces:

DBObject, Serializable, Cloneable, Map<String,Object>, BSONObject, Bson

Direct Known Subclasses:

CommandResult

public class BasicDBObject
extends BasicBSONObject
implements DBObject, Bson

A basic implementation of BSON object that is MongoDB specific. A DBObject can be created as follows, using this class:

 DBObject obj = new BasicDBObject();
 obj.put( "foo", "bar" );
 

See Also:

Serialized Form

MongoDB documentation

MongoDB Documents

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Constructor Summary

Constructors

Constructor and Description
BasicDBObject() Creates an empty object.
BasicDBObject(int size) Creates an empty object
BasicDBObject(Map map) Creates an object from a map.
BasicDBObject(String key, Object value) Creates an object with the given key/value

Method Summary

Modifier and Type	Method and Description
BasicDBObject	append(String key, Object val) Add a key/value pair to this object
Object	copy() Creates a new instance which is a copy of this BasicDBObject.
boolean	isPartialObject() Whether markAsPartialObject() was ever called only matters if you are going to upsert and do not want to risk losing fields.
void	markAsPartialObject() If this object was retrieved with only some fields (using a field filter) this method will be called to mark it as such.
<TDocument> BsonDocument	toBsonDocument(Class<TDocument> documentClass, CodecRegistry codecRegistry) Render the filter into a BsonDocument.
String	toString() Returns a JSON serialization of this object

Methods inherited from class org.bson.BasicBSONObject

containsField, containsKey, equals, get, getBoolean, getBoolean, getDate, getDate, getDouble, getDouble, getInt, getInt, getLong, getLong, getObjectId, getObjectId, getString, getString, hashCode, putAll, putAll, removeField, toMap

Methods inherited from class java.util.LinkedHashMap

clear, containsValue, entrySet, forEach, get, getOrDefault, keySet, removeEldestEntry, replaceAll, values

Methods inherited from class java.util.HashMap

clone, compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, put, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.bson.BSONObject

containsField, containsKey, get, keySet, put, putAll, putAll, removeField, toMap

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, put, putIfAbsent, remove, remove, replace, replace, size

Constructor Detail

BasicDBObject

public BasicDBObject()

Creates an empty object.

BasicDBObject

public BasicDBObject(int size)

Creates an empty object

Parameters:

size - an estimate of number of fields that will be inserted

BasicDBObject

public BasicDBObject(String key,
                     Object value)

Creates an object with the given key/value

Parameters:

key - key under which to store

value - value to store

BasicDBObject

public BasicDBObject(Map map)

Creates an object from a map.

Parameters:

map - map to convert

Method Detail

append

public BasicDBObject append(String key,
                            Object val)

Add a key/value pair to this object

Overrides:

append in class BasicBSONObject

Parameters:

key - the field name

val - the field value

Returns:

this BasicDBObject with the new values added

isPartialObject

public boolean isPartialObject()

Whether markAsPartialObject() was ever called only matters if you are going to upsert and do not want to risk losing fields.

Specified by:

isPartialObject in interface DBObject

Returns:

true if this has been marked as a partial object

toString

public String toString()

Returns a JSON serialization of this object

The output will look like: {"a":1, "b":["x","y","z"]}

Overrides:

toString in class BasicBSONObject

Returns:

JSON serialization

markAsPartialObject

public void markAsPartialObject()

If this object was retrieved with only some fields (using a field filter) this method will be called to mark it as such.

Specified by:

markAsPartialObject in interface DBObject

copy

public Object copy()

Creates a new instance which is a copy of this BasicDBObject.

Returns:

a BasicDBObject with exactly the same values as this instance.

toBsonDocument

public <TDocument> BsonDocument toBsonDocument(Class<TDocument> documentClass,
                                               CodecRegistry codecRegistry)

Description copied from interface: Bson

Render the filter into a BsonDocument.

Specified by:

toBsonDocument in interface Bson

Type Parameters:

TDocument - the type of the document class

Parameters:

documentClass - the document class in scope for the collection. This parameter may be ignored, but it may be used to alter the structure of the returned BsonDocument based on some knowledge of the document class.

codecRegistry - the codec registry. This parameter may be ignored, but it may be used to look up Codec instances for the document class or any other related class.

Returns:

the BsonDocument