public static class ArrayOperators.Reduce extends Object implements AggregationExpression
AggregationExpression
for $reduce
.Modifier and Type | Class and Description |
---|---|
static interface |
ArrayOperators.Reduce.InitialValueBuilder |
static class |
ArrayOperators.Reduce.PropertyExpression |
static interface |
ArrayOperators.Reduce.ReduceBuilder |
static class |
ArrayOperators.Reduce.Variable |
Modifier and Type | Method and Description |
---|---|
static ArrayOperators.Reduce.InitialValueBuilder |
arrayOf(AggregationExpression arrayValueExpression)
Start creating new
ArrayOperators.Reduce . |
static ArrayOperators.Reduce.InitialValueBuilder |
arrayOf(String fieldReference)
Start creating new
ArrayOperators.Reduce . |
org.bson.Document |
toDocument(AggregationOperationContext context)
|
public org.bson.Document toDocument(AggregationOperationContext context)
AggregationExpression
toDocument
in interface AggregationExpression
context
- must not be null.Document
) form of the expression.public static ArrayOperators.Reduce.InitialValueBuilder arrayOf(String fieldReference)
ArrayOperators.Reduce
.fieldReference
- must not be null.ArrayOperators.Reduce.InitialValueBuilder
to create ArrayOperators.Reduce
.public static ArrayOperators.Reduce.InitialValueBuilder arrayOf(AggregationExpression arrayValueExpression)
ArrayOperators.Reduce
.arrayValueExpression
- must not be null.ArrayOperators.Reduce.InitialValueBuilder
to create ArrayOperators.Reduce
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