Package dev.morphia.aggregation.stages

Class Group.GroupId

java.lang.Object

dev.morphia.aggregation.stages.Group.GroupId

Enclosing class:

Group

public static class Group.GroupId
extends Object

Defines a group ID

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	GroupId()
protected	GroupId(dev.morphia.aggregation.expressions.impls.Expression value)

Method Summary

Modifier and Type	Method	Description
Group.GroupId	field(String name)	Adds a field to the group.
Group.GroupId	field(String name, dev.morphia.aggregation.expressions.impls.Expression expression)	Adds a named field to the group with an expression giving the value.
dev.morphia.aggregation.expressions.impls.DocumentExpression	getDocument()
dev.morphia.aggregation.expressions.impls.Expression	getField()

Methods inherited from class java.lang.Object

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

Constructor Detail

GroupId

protected GroupId()

GroupId

protected GroupId(dev.morphia.aggregation.expressions.impls.Expression value)

Method Detail

field

public Group.GroupId field(String name)

Adds a field to the group. This method is equivalent to calling field("name", Expression.field("name"))

Parameters:

name - the field name

Returns:

this

See Also:

field(String, Expression), Expressions.field(String)

field

public Group.GroupId field(String name,
                           dev.morphia.aggregation.expressions.impls.Expression expression)

Adds a named field to the group with an expression giving the value.

Parameters:

name - the name of the field

expression - the expression giving the value

Returns:

this

getDocument

@Nullable
@MorphiaInternal
public dev.morphia.aggregation.expressions.impls.DocumentExpression getDocument()

Returns:

the document

Developer note.

This is an internal item. Its function and presence are subject to change without warning. Its use is highly discouraged.

getField

@Nullable
@MorphiaInternal
public dev.morphia.aggregation.expressions.impls.Expression getField()

Returns:

the field

Developer note.

This is an internal item. Its function and presence are subject to change without warning. Its use is highly discouraged.