com.mongodb

类 BasicDBObject

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<java.lang.String,java.lang.Object>

org.bson.BasicBSONObject

com.mongodb.BasicDBObject

所有已实现的接口:

DBObject, java.io.Serializable, java.lang.Cloneable, java.util.Map<java.lang.String,java.lang.Object>, BSONObject, Bson

直接已知子类:

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" );
 

另请参阅:

序列化表格

MongoDB documentation

MongoDB Documents

嵌套类概要

从类继承的嵌套类/接口 java.util.AbstractMap

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

构造器概要

构造器

构造器和说明
BasicDBObject() Creates an empty object.
BasicDBObject(int size) Creates an empty object
BasicDBObject(java.util.Map map) Creates an object from a map.
BasicDBObject(java.lang.String key, java.lang.Object value) Creates an object with the given key/value

方法概要

限定符和类型	方法和说明
BasicDBObject	append(java.lang.String key, java.lang.Object val) Add a key/value pair to this object
java.lang.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.
static BasicDBObject	parse(java.lang.String json) Parses a string in MongoDB Extended JSON format to a BasicDBObject.
static BasicDBObject	parse(java.lang.String json, Decoder<BasicDBObject> decoder) Parses a string in MongoDB Extended JSON format to a BasicDBObject.
<TDocument> BsonDocument	toBsonDocument(java.lang.Class<TDocument> documentClass, CodecRegistry codecRegistry) Render the filter into a BsonDocument.
java.lang.String	toJson() Gets a JSON representation of this document With the default JsonWriterSettings and DBObjectCodec.
java.lang.String	toJson(Encoder<BasicDBObject> encoder) Gets a JSON representation of this document With the default JsonWriterSettings.
java.lang.String	toJson(JsonWriterSettings writerSettings) Gets a JSON representation of this document With the default DBObjectCodec.
java.lang.String	toJson(JsonWriterSettings writerSettings, Encoder<BasicDBObject> encoder) Gets a JSON representation of this document
java.lang.String	toString() Returns a JSON serialization of this object The output will look like: {"a":1, "b":["x","y","z"]}

从类继承的方法 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

从类继承的方法 java.util.LinkedHashMap

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

从类继承的方法 java.util.HashMap

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

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.bson.BSONObject

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

从接口继承的方法 java.util.Map

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

构造器详细资料

BasicDBObject

public BasicDBObject()

Creates an empty object.

BasicDBObject

public BasicDBObject(int size)

Creates an empty object

参数:

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

BasicDBObject

public BasicDBObject(java.lang.String key,
                     java.lang.Object value)

Creates an object with the given key/value

参数:

key - key under which to store

value - value to store

BasicDBObject

public BasicDBObject(java.util.Map map)

Creates an object from a map.

参数:

map - map to convert

方法详细资料

parse

public static BasicDBObject parse(java.lang.String json)

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

参数:

json - the JSON string

返回:

a corresponding BasicDBObject object

另请参阅:

JsonReader

MongoDB documentation

MongoDB Extended JSON

parse

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

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

参数:

json - the JSON string

decoder - the decoder to use to decode the BasicDBObject instance

返回:

a corresponding BasicDBObject object

另请参阅:

JsonReader

MongoDB documentation

MongoDB Extended JSON

append

public BasicDBObject append(java.lang.String key,
                            java.lang.Object val)

Add a key/value pair to this object

覆盖:

append 在类中 BasicBSONObject

参数:

key - the field name

val - the field value

返回:

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.

指定者:

isPartialObject 在接口中 DBObject

返回:

true if this has been marked as a partial object

toJson

public java.lang.String toJson()

Gets a JSON representation of this document

With the default JsonWriterSettings and DBObjectCodec.

返回:

a JSON representation of this document

抛出:

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

toJson

public java.lang.String toJson(JsonWriterSettings writerSettings)

Gets a JSON representation of this document

With the default DBObjectCodec.

参数:

writerSettings - the json writer settings to use when encoding

返回:

a JSON representation of this document

抛出:

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

toJson

public java.lang.String toJson(Encoder<BasicDBObject> encoder)

Gets a JSON representation of this document

With the default JsonWriterSettings.

参数:

encoder - the BasicDBObject codec instance to encode the document with

返回:

a JSON representation of this document

抛出:

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

toJson

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

Gets a JSON representation of this document

参数:

writerSettings - the json writer settings to use when encoding

encoder - the BasicDBObject codec instance to encode the document with

返回:

a JSON representation of this document

抛出:

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

toString

public java.lang.String toString()

Returns a JSON serialization of this object

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

覆盖:

toString 在类中 BasicBSONObject

返回:

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.

指定者:

markAsPartialObject 在接口中 DBObject

copy

public java.lang.Object copy()

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

返回:

a BasicDBObject with exactly the same values as this instance.

toBsonDocument

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

从接口复制的说明: Bson

Render the filter into a BsonDocument.

指定者:

toBsonDocument 在接口中 Bson

类型参数:

TDocument - the type of the document class

参数:

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.

返回:

the BsonDocument