Class SelectionOperators.Last
java.lang.Object
org.springframework.data.mongodb.core.aggregation.SelectionOperators.Last
- All Implemented Interfaces:
AggregationExpression
,MongoExpression
- Enclosing class:
- SelectionOperators
AbstractAggregationExpression
to return the $lastN elements.-
Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionappend
(Object value, org.springframework.data.mongodb.core.aggregation.AbstractAggregationExpression.Expand expandList) Append the given key at the position in the underlyingLinkedHashMap
.Get the argument map.protected boolean
Check if the given key is available.protected <T> T
get
(int index) Get the value at a given index.protected <T> T
Get the value for a given key.protected String
Define the field to serve as source.input
(AggregationExpression expression) Define the expression building the value to serve as source.protected boolean
static SelectionOperators.Last
last()
static SelectionOperators.Last
last
(int numberOfResults) limit
(int numberOfResults) Limits the number of returned elements to the given value.limit
(AggregationExpression expression) Limits the number of returned elements to the value defined by the givenexpression
.Define the field to serve as source.of
(AggregationExpression expression) Define the expression building the value to serve as source.org.bson.Document
toDocument
(Object value, AggregationOperationContext context) org.bson.Document
toDocument
(AggregationOperationContext context) 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
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Constructor Details
-
Last
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Method Details
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last
- Returns:
- new instance of
SelectionOperators.Last
.
-
last
- Returns:
- new instance of
SelectionOperators.Last
.
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limit
Limits the number of returned elements to the given value.- Parameters:
numberOfResults
-- Returns:
- new instance of
SelectionOperators.Last
.
-
limit
Limits the number of returned elements to the value defined by the givenexpression
.- Parameters:
expression
- must not be null.- Returns:
- new instance of
SelectionOperators.Last
.
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of
Define the field to serve as source.- Parameters:
fieldName
- must not be null.- Returns:
- new instance of
SelectionOperators.Last
.
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of
Define the expression building the value to serve as source.- Parameters:
expression
- must not be null.- Returns:
- new instance of
SelectionOperators.Last
.
-
input
Define the field to serve as source.- Parameters:
fieldName
- must not be null.- Returns:
- new instance of
SelectionOperators.Last
.
-
input
Define the expression building the value to serve as source.- Parameters:
expression
- must not be null.- Returns:
- new instance of
SelectionOperators.Last
.
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getMongoMethod
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toDocument
Description copied from interface:AggregationExpression
- Specified by:
toDocument
in interfaceAggregationExpression
- Parameters:
context
- must not be null.- Returns:
- the MongoDB native (
Document
) form of the expression.
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toDocument
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asFields
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append
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append
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append
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appendTo
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remove
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appendAt
Append the given key at the position in the underlyingLinkedHashMap
.- Parameters:
index
-key
-value
-- Returns:
- Since:
- 3.1
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values
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get
protected <T> T get(int index) Get the value at a given index.- Type Parameters:
T
-- Parameters:
index
-- Returns:
- Since:
- 2.1
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get
Get the value for a given key.- Type Parameters:
T
-- Parameters:
key
-- Returns:
- Since:
- 2.1
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isArgumentMap
protected boolean isArgumentMap() -
argumentMap
Get the argument map.- Returns:
- Since:
- 2.1
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contains
Check if the given key is available.- Parameters:
key
-- Returns:
- Since:
- 2.1
-