org.springframework.data.mongodb.core.aggregation

Interface ScriptOperators.Accumulator.AccumulatorMergeBuilder

All Known Subinterfaces:

ScriptOperators.Accumulator.AccumulatorAccumulateArgsBuilder

Enclosing class:

ScriptOperators.Accumulator

public static interface ScriptOperators.Accumulator.AccumulatorMergeBuilder

Method Summary

Modifier and Type	Method and Description
ScriptOperators.Accumulator.AccumulatorFinalizeBuilder	merge(String function) Set the merge function used to merge two internal states.

Method Detail

merge

ScriptOperators.Accumulator.AccumulatorFinalizeBuilder merge(String function)

Set the merge function used to merge two internal states.
This might be required because the operation is run on a sharded cluster or when the operator exceeds its memory limit.
function(state1, state2) { ... return newState }

Parameters:

function - must not be null.

Returns:

this.