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

Class ScriptOperators.Function

java.lang.Object

org.springframework.data.mongodb.core.aggregation.ScriptOperators.Function

All Implemented Interfaces:

AggregationExpression, MongoExpression

Enclosing class:

ScriptOperators

public static class ScriptOperators.Function
extends Object

ScriptOperators.Function defines a custom aggregation $function in JavaScript.
{ $function: { body: ..., args: ..., lang: "js" } }
ScriptOperators.Function cannot be used as part of schema validation query expression.
NOTE: Server-Side JavaScript execution must be enabled

See Also:

• MongoDB Documentation: $function

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)
ScriptOperators.Function	args(Object... args)	Set the arguments passed to the function body.
ScriptOperators.Function	args(List<Object> args)	Set the arguments passed to the function body.
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.
static ScriptOperators.Function	function(String body)	Create a new ScriptOperators.Function with the given function definition.
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.
protected String	getMongoMethod()
protected boolean	isArgumentMap()
ScriptOperators.Function	lang(String lang)	The language used in the body.
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

Method Details

function

public static ScriptOperators.Function function(String body)

Create a new ScriptOperators.Function with the given function definition.

Parameters:

body - must not be null.

Returns:

new instance of ScriptOperators.Function.

args

public ScriptOperators.Function args(Object... args)

Set the arguments passed to the function body.

Parameters:

args - the arguments passed to the function body. Leave empty if the function does not take any arguments.

Returns:

new instance of ScriptOperators.Function.

args

public ScriptOperators.Function args(List<Object> args)

Set the arguments passed to the function body.

Parameters:

args - the arguments passed to the function body. Leave empty if the function does not take any arguments.

Returns:

new instance of ScriptOperators.Function.

lang

public ScriptOperators.Function lang(String lang)

The language used in the body.

Parameters:

lang - must not be null nor empty.

Returns:

new instance of ScriptOperators.Function.

getMongoMethod

protected String getMongoMethod()

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.

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