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org.springframework.data.mongodb.core.aggregation
Class ConditionalOperators.IfNull
- java.lang.Object
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- org.springframework.data.mongodb.core.aggregation.ConditionalOperators.IfNull
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- All Implemented Interfaces:
- AggregationExpression
- Enclosing class:
- ConditionalOperators
public static class ConditionalOperators.IfNull extends Object implements AggregationExpression
Encapsulates the aggregation framework$ifNulloperator. Replacement values can be eitherfield references,expressions, values of simple MongoDB types or values that can be converted to a simple MongoDB type.- Author:
- Mark Paluch
- See Also:
- https://docs.mongodb.com/manual/reference/operator/aggregation/ifNull/
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Nested Class Summary
Nested Classes Modifier and Type Class and Description static interfaceConditionalOperators.IfNull.IfNullBuilderstatic interfaceConditionalOperators.IfNull.ThenBuilder
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method and Description static ConditionalOperators.IfNull.ThenBuilderifNull(AggregationExpression expression)Creates newConditionalOperators.IfNull.static ConditionalOperators.IfNull.ThenBuilderifNull(String fieldReference)Creates newConditionalOperators.IfNull.org.bson.DocumenttoDocument(AggregationOperationContext context)
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Method Detail
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ifNull
public static ConditionalOperators.IfNull.ThenBuilder ifNull(String fieldReference)
Creates newConditionalOperators.IfNull.- Parameters:
fieldReference- the field to check for a null value, field reference must not be null .- Returns:
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ifNull
public static ConditionalOperators.IfNull.ThenBuilder ifNull(AggregationExpression expression)
Creates newConditionalOperators.IfNull.- Parameters:
expression- the expression to check for a null value, field reference must not be null.- Returns:
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toDocument
public org.bson.Document toDocument(AggregationOperationContext context)
Description copied from interface:AggregationExpression- Specified by:
toDocumentin interfaceAggregationExpression- Returns:
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