Package org.bson
Interface BSONObject
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- All Known Implementing Classes:
BasicBSONList
,BasicBSONObject
,LazyBSONList
,LazyBSONObject
public interface BSONObject
A key-value map that can be saved to the database.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description boolean
containsField(String s)
Checks if this object contains a field with the given name.Object
get(String key)
Gets a field from this object by a given name.Set<String>
keySet()
Returns this object's fields' namesObject
put(String key, Object v)
Sets a name/value pair in this object.void
putAll(Map m)
Sets all key/value pairs from a map into this objectvoid
putAll(BSONObject o)
Sets all key/value pairs from an object into this objectObject
removeField(String key)
Removes a field with a given name from this object.Map
toMap()
Returns a map representing this BSONObject.
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Method Detail
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put
Object put(String key, Object v)
Sets a name/value pair in this object.- Parameters:
key
- Name to setv
- Corresponding value- Returns:
- the previous value associated with
key
, ornull
if there was no mapping forkey
. (Anull
return can also indicate that the map previously associatednull
withkey
.)
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putAll
void putAll(BSONObject o)
Sets all key/value pairs from an object into this object- Parameters:
o
- the object
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putAll
void putAll(Map m)
Sets all key/value pairs from a map into this object- Parameters:
m
- the map
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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
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toMap
Map toMap()
Returns a map representing this BSONObject.- Returns:
- the map
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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
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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
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