Package org.springframework.data.mongodb.core.aggregation

Class ObjectOperators.GetField

java.lang.Object

org.springframework.data.mongodb.core.aggregation.ObjectOperators.GetField

All Implemented Interfaces:

AggregationExpression, MongoExpression

Enclosing class:

ObjectOperators

public static class ObjectOperators.GetField
extends Object

AggregationExpression for $getField.

Since:

4.0

Author:

Christoph Strobl

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	GetField(Object value)

Method Summary

Modifier and Type	Method	Description
protected List<Object>	append(Object value)
protected List<Object>	append(Object value, org.springframework.data.mongodb.core.aggregation.AbstractAggregationExpression.Expand expandList)
protected Map<String,Object>	append(String key, Object value)
protected Map<String,Object>	appendAt(int index, String key, Object value)	Append the given key at the position in the underlying LinkedHashMap.
protected Map<String,Object>	appendTo(String key, Object value)
protected Map<String,Object>	argumentMap()	Get the argument map.
protected static List<Field>	asFields(String... fieldRefs)
protected boolean	contains(Object key)	Check if the given key is available.
protected <T> T	get(int index)	Get the value at a given index.
protected <T> T	get(Object key)	Get the value for a given key.
static ObjectOperators.GetField	getField(String fieldName)	Creates new aggregation expression that takes the value pointed to by given fieldName.
static ObjectOperators.GetField	getField(Field field)	Creates new aggregation expression that takes the value pointed to by given Field.
protected String	getMongoMethod()
protected boolean	isArgumentMap()
ObjectOperators.GetField	of(String fieldRef)	Creates new aggregation expression that takes the value pointed to by given field reference.
ObjectOperators.GetField	of(AggregationExpression expression)	Creates new aggregation expression that takes the value pointed to by given AggregationExpression.
protected Map<String,Object>	remove(String key)
org.bson.Document	toDocument(Object value, AggregationOperationContext context)
org.bson.Document	toDocument(AggregationOperationContext context)	Turns the AggregationExpression into a Document within the given AggregationOperationContext.
protected List<Object>	values()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.data.mongodb.core.aggregation.AggregationExpression

toDocument

Constructor Details

GetField

protected GetField(Object value)

Method Details

getField

public static ObjectOperators.GetField getField(String fieldName)

Creates new aggregation expression that takes the value pointed to by given fieldName.

Parameters:

fieldName - must not be null.

Returns:

new instance of ObjectOperators.GetField.

getField

public static ObjectOperators.GetField getField(Field field)

Creates new aggregation expression that takes the value pointed to by given Field.

Parameters:

field - must not be null.

Returns:

new instance of ObjectOperators.GetField.

of

public ObjectOperators.GetField of(String fieldRef)

Creates new aggregation expression that takes the value pointed to by given field reference.

Parameters:

fieldRef - must not be null.

Returns:

new instance of ObjectOperators.GetField.

of

public ObjectOperators.GetField of(AggregationExpression expression)

Creates new aggregation expression that takes the value pointed to by given AggregationExpression.

Parameters:

expression - must not be null.

Returns:

new instance of ObjectOperators.GetField.

toDocument

public org.bson.Document toDocument(AggregationOperationContext context)

Description copied from interface: AggregationExpression

Turns the AggregationExpression into a Document within the given AggregationOperationContext.

Specified by:

toDocument in interface AggregationExpression

Parameters:

context - must not be null.

Returns:

the MongoDB native (Document) form of the expression.

getMongoMethod

protected String getMongoMethod()

toDocument

public org.bson.Document toDocument(Object value,
 AggregationOperationContext context)

asFields

protected static List<Field> asFields(String... fieldRefs)

append

protected List<Object> append(Object value,
 org.springframework.data.mongodb.core.aggregation.AbstractAggregationExpression.Expand expandList)

append

protected List<Object> append(Object value)

append

protected Map<String,Object> append(String key,
 Object value)

appendTo

protected Map<String,Object> appendTo(String key,
 Object value)

remove

protected Map<String,Object> remove(String key)

appendAt

protected Map<String,Object> appendAt(int index,
 String key,
 Object value)

Append the given key at the position in the underlying LinkedHashMap.

Parameters:

index -

key -

value -

Returns:

Since:

3.1

values

protected List<Object> values()

get

protected <T> T get(int index)

Get the value at a given index.

Type Parameters:

T -

Parameters:

index -

Returns:

Since:

2.1

get

protected <T> T get(Object key)

Get the value for a given key.

Type Parameters:

T -

Parameters:

key -

Returns:

Since:

2.1

isArgumentMap

protected boolean isArgumentMap()

argumentMap

protected Map<String,Object> argumentMap()

Get the argument map.

Returns:

Since:

2.1

contains

protected boolean contains(Object key)

Check if the given key is available.

Parameters:

key -

Returns:

Since:

2.1