Package com.atlassian.confluence.internal.upgrade.constraint.dedup

Interface DedupeStrategy

All Known Implementing Classes:

JustFailDedupeStrategy, KeepBiggestIdDedupeStrategy, KeepOneDedupeStrategy, KeepSmallestIdDedupeStrategy, MergeToSmallestIdDedupeStrategy

public interface DedupeStrategy

Decide how to remove duplicates so a unique constraint can be added Note: Tables with composite keys are not supported.

Since:

7.1.0

Method Summary

Modifier and Type	Method	Description
void	perform(org.springframework.jdbc.core.JdbcTemplate jdbcTemplate, SortedSet<Object> ids)	Remove duplicates so a unique constraint can be added

Method Detail

perform

void perform(org.springframework.jdbc.core.JdbcTemplate jdbcTemplate,
             SortedSet<Object> ids)
      throws UpgradeException

Remove duplicates so a unique constraint can be added

Parameters:

jdbcTemplate - A JdbcTemplate to be used

ids - Set of Ids of duplicate rows in DB. Upon invocation of this method, only one of them can remain in the DB. All Confluence primary keys are of type Long or String so they can be used in SortedSet.

Throws:

UpgradeException - Thrown if there is any error removing duplicates, will cancel the constraint adding process