org.apache.beam.sdk.extensions.sql.impl.udaf

Class StringAgg.StringAggString

java.lang.Object

org.apache.beam.sdk.transforms.Combine.CombineFn<java.lang.String,java.lang.String,java.lang.String>

org.apache.beam.sdk.extensions.sql.impl.udaf.StringAgg.StringAggString

All Implemented Interfaces:

java.io.Serializable, org.apache.beam.sdk.transforms.CombineFnBase.GlobalCombineFn<java.lang.String,java.lang.String,java.lang.String>, org.apache.beam.sdk.transforms.display.HasDisplayData

Enclosing class:

StringAgg

public static class StringAgg.StringAggString
extends org.apache.beam.sdk.transforms.Combine.CombineFn<java.lang.String,java.lang.String,java.lang.String>

A Combine.CombineFn that aggregates strings with a string as delimiter.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
StringAggString(java.lang.String delimiter)

Method Summary

Modifier and Type	Method and Description
java.lang.String	addInput(java.lang.String curString, java.lang.String nextString)
java.lang.String	createAccumulator()
java.lang.String	extractOutput(java.lang.String output)
java.lang.String	mergeAccumulators(java.lang.Iterable<java.lang.String> accumList)

Methods inherited from class org.apache.beam.sdk.transforms.Combine.CombineFn

apply, compact, defaultValue, getInputType, getOutputType

Methods inherited from class java.lang.Object

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

Constructor Detail

StringAggString

public StringAggString(java.lang.String delimiter)

Method Detail

createAccumulator

public java.lang.String createAccumulator()

Specified by:

createAccumulator in class org.apache.beam.sdk.transforms.Combine.CombineFn<java.lang.String,java.lang.String,java.lang.String>

addInput

public java.lang.String addInput(java.lang.String curString,
                                 java.lang.String nextString)

Specified by:

addInput in class org.apache.beam.sdk.transforms.Combine.CombineFn<java.lang.String,java.lang.String,java.lang.String>

mergeAccumulators

public java.lang.String mergeAccumulators(java.lang.Iterable<java.lang.String> accumList)

Specified by:

mergeAccumulators in class org.apache.beam.sdk.transforms.Combine.CombineFn<java.lang.String,java.lang.String,java.lang.String>

extractOutput

public java.lang.String extractOutput(java.lang.String output)

Specified by:

extractOutput in class org.apache.beam.sdk.transforms.Combine.CombineFn<java.lang.String,java.lang.String,java.lang.String>