com.atlassian.confluence.core

Interface BatchOperationManager

All Known Implementing Classes:

SimpleHibernateBatchOperationManager

public interface BatchOperationManager

Perform batch operations without any explicit dependency on a particular version of Hibernate or Spring.

Method Summary

Modifier and Type	Method and Description
<I,O> Iterable<O>	performAsBatch(Iterable<I> input, int expectedTotal, com.google.common.base.Function<I,O> task) Executes a task for each item in a collection in batches
<I,O> Iterable<O>	performAsBatch(Iterable<I> input, int batchSize, int expectedTotal, com.google.common.base.Function<I,O> task) Executes a task for each item in a collection in batches with configurable batch size
<I,O> Iterable<O>	performInChunks(Iterable<I> input, int chunkSize, int sizeToCollect, com.google.common.base.Function<List<I>,List<O>> task) Processes a collection of items in chunks until a given number of processed items is reached, the processed items are then returned.

Method Detail

performAsBatch

<I,O> Iterable<O> performAsBatch(Iterable<I> input,
                                 int batchSize,
                                 int expectedTotal,
                                 com.google.common.base.Function<I,O> task)

Executes a task for each item in a collection in batches with configurable batch size

Type Parameters:

I - input type

O - output type

Parameters:

input - the items to process

batchSize - the size of the batch

expectedTotal - the expected number of items to process

task - a function to process the items

Returns:

list of task outputs of specified type

Since:

6.14.0

performAsBatch

<I,O> Iterable<O> performAsBatch(Iterable<I> input,
                                 int expectedTotal,
                                 com.google.common.base.Function<I,O> task)

Executes a task for each item in a collection in batches

Type Parameters:

I - input type

O - output type

Parameters:

input - the items to process

expectedTotal - the expected number of items to process

task - a function to process the items

Returns:

list of task outputs of specified type

performInChunks

<I,O> Iterable<O> performInChunks(Iterable<I> input,
                                  int chunkSize,
                                  int sizeToCollect,
                                  com.google.common.base.Function<List<I>,List<O>> task)

Processes a collection of items in chunks until a given number of processed items is reached, the processed items are then returned.

Parameters:

input - the items to process

chunkSize - the size of the batch

sizeToCollect - the number of processed items to return

task - a function to process the items

Returns:

A list of processed items