com.atlassian.jira.bulkedit.operation

Class BulkMoveBatchProcessingHelper

java.lang.Object

com.atlassian.jira.bulkedit.operation.BulkMoveBatchProcessingHelper

public class BulkMoveBatchProcessingHelper
extends Object

Constructor Summary

Constructors

Constructor and Description
BulkMoveBatchProcessingHelper()

Method Summary

Modifier and Type	Method and Description
List<List<Issue>>	partition(List<Issue> selectedIssues, int batchSize) Returns consecutive sublists of a list, each of the same size except the last one that can have different size.

Methods inherited from class java.lang.Object

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

Constructor Detail

BulkMoveBatchProcessingHelper

public BulkMoveBatchProcessingHelper()

Method Detail

partition

public List<List<Issue>> partition(@Nonnull
                                   List<Issue> selectedIssues,
                                   int batchSize)

Returns consecutive sublists of a list, each of the same size except the last one that can have different size.

There are two possible scenarios:

1. When selectedIssues % batchSize != 1

   Method returns batches created by Lists.partition(List, int)

2. When selectedIssues % batchSize == 1

   If the last batch contains one issue, some methods wrongly assume they are not performing a bulk operation. As a workaround, we merge last two batches.

   An example of such behaviour is CommentSystemField.needsMove(Collection, Issue, FieldLayoutItem)

Parameters:

selectedIssues - the list to partition and return batches

batchSize - the desired size of each batch (the last batch could have different size)

Returns:

an unmodifiable list of unmodifiable batches

Throws:

IllegalArgumentException - if batchSize is less than 2