com.mongodb
Class ReflectionDBObject

java.lang.Object
  com.mongodb.ReflectionDBObject

All Implemented Interfaces:

DBObject, BSONObject

public abstract class ReflectionDBObject
extends Object
implements DBObject

This class enables to map simple Class fields to a BSON object fields

Nested Class Summary

static class

ReflectionDBObject.JavaWrapper Represents a wrapper around the DBObject to interface with the Class fields

Constructor Summary

ReflectionDBObject()

Method Summary

boolean	containsField(String s) Checks if this object contains a field with the given name.
boolean	containsKey(String s) Deprecated.
Object	get_id() Gets the _id
Object	get(String key) Gets a field from this object by a given name.
static ReflectionDBObject.JavaWrapper	getWrapper(Class c) Returns an existing Wrapper instance associated with a class, or creates a new one.
static ReflectionDBObject.JavaWrapper	getWrapperIfReflectionObject(Class c) Returns the wrapper if this object can be assigned from this class
boolean	isPartialObject() whether markAsPartialObject was ever called only matters if you are going to upsert and do not want to risk losing fields
Set<String>	keySet() Returns this object's fields' names
void	markAsPartialObject() ReflectionDBObjects can't be partial
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) can't remove from a ReflectionDBObject
void	set_id(Object id) Sets the _id
Map	toMap() Returns a map representing this BSONObject.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ReflectionDBObject

public ReflectionDBObject()

Method Detail

get

public Object get(String key)

Description copied from interface: BSONObject

Gets a field from this object by a given name.

Specified by:

get in interface BSONObject

Parameters:

key - The name of the field fetch

Returns:

The field, if found

keySet

public Set<String> keySet()

Description copied from interface: BSONObject

Returns this object's fields' names

Specified by:

keySet in interface BSONObject

Returns:

The names of the fields in this object

containsKey

@Deprecated
public boolean containsKey(String s)

Deprecated.

Description copied from interface: BSONObject

Deprecated

Specified by:

containsKey in interface BSONObject

Returns:

True if the key is present

containsField

public boolean containsField(String s)

Description copied from interface: BSONObject

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

Specified by:

containsField in interface BSONObject

Parameters:

s - Field name for which to check

Returns:

True if the field is present

put

public Object put(String key,
                  Object v)

Description copied from interface: BSONObject

Sets a name/value pair in this object.

Specified by:

put in interface BSONObject

Parameters:

key - Name to set

v - Corresponding value

Returns:

v

putAll

public void putAll(Map m)

Description copied from interface: BSONObject

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

Specified by:

putAll in interface BSONObject

Parameters:

m - the map

putAll

public void putAll(BSONObject o)

Description copied from interface: BSONObject

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

Specified by:

putAll in interface BSONObject

Parameters:

o - the object

get_id

public Object get_id()

Gets the _id

Returns:

set_id

public void set_id(Object id)

Sets the _id

Parameters:

id -

isPartialObject

public boolean isPartialObject()

Description copied from interface: DBObject

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

toMap

public Map toMap()

Description copied from interface: BSONObject

Returns a map representing this BSONObject.

Specified by:

toMap in interface BSONObject

Returns:

the map

markAsPartialObject

public void markAsPartialObject()

ReflectionDBObjects can't be partial

Specified by:

markAsPartialObject in interface DBObject

removeField

public Object removeField(String key)

can't remove from a ReflectionDBObject

Specified by:

removeField in interface BSONObject

Parameters:

key -

Returns:

getWrapperIfReflectionObject

public static ReflectionDBObject.JavaWrapper getWrapperIfReflectionObject(Class c)

Returns the wrapper if this object can be assigned from this class

Parameters:

c -

Returns:

getWrapper

public static ReflectionDBObject.JavaWrapper getWrapper(Class c)

Returns an existing Wrapper instance associated with a class, or creates a new one.

Parameters:

c -

Returns: