org.bson

Interface BSONObject

All Known Subinterfaces:

DBObject

All Known Implementing Classes:

BasicBSONList, BasicBSONObject, BasicDBList, BasicDBObject, CommandResult, GridFSDBFile, GridFSFile, GridFSInputFile, LazyBSONList, LazyBSONObject, LazyDBList, LazyDBObject, ReflectionDBObject

public interface BSONObject

A key-value map that can be saved to the database.

Method Summary

Modifier and Type	Method and Description
boolean	containsField(String s) Checks if this object contains a field with the given name.
boolean	containsKey(String key) Deprecated. Please use containsField(String) instead
Object	get(String key) Gets a field from this object by a given name.
Set<String>	keySet() Returns this object's fields' names
Object	put(String key, Object v) Sets a name/value pair in this object.
void	putAll(BSONObject o) Sets all key/value pairs from an object into this object
void	putAll(Map m) Sets all key/value pairs from a map into this object
Object	removeField(String key) Removes a field with a given name from this object.
Map	toMap() Returns a map representing this BSONObject.

Method Detail

put

Object put(String key,
           Object v)

Sets a name/value pair in this object.

Parameters:

key - Name to set

v - Corresponding value

Returns:

the previous value associated with key, or null if there was no mapping for key. (A null return can also indicate that the map previously associated null with key.)

putAll

void putAll(BSONObject o)

Sets all key/value pairs from an object into this object

Parameters:

o - the object

putAll

void putAll(Map m)

Sets all key/value pairs from a map into this object

Parameters:

m - the map

get

Object get(String key)

Gets a field from this object by a given name.

Parameters:

key - The name of the field fetch

Returns:

The field, if found

toMap

Map toMap()

Returns a map representing this BSONObject.

Returns:

the map

removeField

Object removeField(String key)

Removes a field with a given name from this object.

Parameters:

key - The name of the field to remove

Returns:

The value removed from this object

containsKey

@Deprecated
boolean containsKey(String key)

Deprecated. Please use containsField(String) instead

Deprecated

Parameters:

key - the key to check

Returns:

True if the key is present

containsField

boolean containsField(String s)

Checks if this object contains a field with the given name.

Parameters:

s - Field name for which to check

Returns:

True if the field is present

keySet

Set<String> keySet()

Returns this object's fields' names

Returns:

The names of the fields in this object