Package 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

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 extends Object,V extends Object>, AbstractMap.SimpleImmutableEntry<K extends Object,V extends Object>

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	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	equals(Object o)
int	hashCode()
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.
static BasicDBObject	parse(String json)	Parses a string in MongoDB Extended JSON format to a BasicDBObject.
static BasicDBObject	parse(String json, Decoder<BasicDBObject> decoder)	Parses a string in MongoDB Extended JSON format to a BasicDBObject.
<TDocument> BsonDocument	toBsonDocument(Class<TDocument> documentClass, CodecRegistry codecRegistry)
String	toJson()	Gets a JSON representation of this document using the JsonMode.RELAXED output mode, and otherwise the default settings of JsonWriterSettings.Builder and DBObjectCodec.
String	toJson(Encoder<BasicDBObject> encoder)	Gets a JSON representation of this document
String	toJson(JsonWriterSettings writerSettings)	Gets a JSON representation of this document
String	toJson(JsonWriterSettings writerSettings, Encoder<BasicDBObject> encoder)	Gets a JSON representation of this document
String	toString()	Returns a JSON serialization of this object

Methods inherited from class org.bson.BasicBSONObject

containsField, get, getBoolean, getBoolean, getDate, getDate, getDouble, getDouble, getInt, getInt, getLong, getLong, getObjectId, getObjectId, getString, getString, 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, 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

parse

public static BasicDBObject parse(String json)

Parses a string in MongoDB Extended JSON format to a BasicDBObject.

Parameters:

json - the JSON string

Returns:

a corresponding BasicDBObject object

See Also:

JsonReader

MongoDB documentation

MongoDB Extended JSON

parse

public static BasicDBObject parse(String json,
                                  Decoder<BasicDBObject> decoder)

Parses a string in MongoDB Extended JSON format to a BasicDBObject.

Parameters:

json - the JSON string

decoder - the decoder to use to decode the BasicDBObject instance

Returns:

a corresponding BasicDBObject object

See Also:

JsonReader

MongoDB documentation

MongoDB Extended JSON

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

toJson

public String toJson()

Gets a JSON representation of this document using the JsonMode.RELAXED output mode, and otherwise the default settings of JsonWriterSettings.Builder and DBObjectCodec.

Returns:

a JSON representation of this document

Throws:

CodecConfigurationException - if the document contains types not in the default registry

See Also:

toJson(JsonWriterSettings), JsonWriterSettings

toJson

public String toJson(JsonWriterSettings writerSettings)

Gets a JSON representation of this document

With the default DBObjectCodec.

Parameters:

writerSettings - the json writer settings to use when encoding

Returns:

a JSON representation of this document

Throws:

CodecConfigurationException - if the document contains types not in the default registry

toJson

public String toJson(Encoder<BasicDBObject> encoder)

Gets a JSON representation of this document

With the default JsonWriterSettings.

Parameters:

encoder - the BasicDBObject codec instance to encode the document with

Returns:

a JSON representation of this document

Throws:

CodecConfigurationException - if the registry does not contain a codec for the document values.

toJson

public String toJson(JsonWriterSettings writerSettings,
                     Encoder<BasicDBObject> encoder)

Gets a JSON representation of this document

Parameters:

writerSettings - the json writer settings to use when encoding

encoder - the BasicDBObject codec instance to encode the document with

Returns:

a JSON representation of this document

Throws:

CodecConfigurationException - if the registry does not contain a codec for the document values.

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<String,Object>

Overrides:

equals in class BasicBSONObject

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<String,Object>

Overrides:

hashCode in class BasicBSONObject

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 AbstractMap<String,Object>

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)

Specified by:

toBsonDocument in interface Bson