com.cloudant.sync.datastore.migrations

Class MigrateDatabase100To200

java.lang.Object

com.cloudant.sync.datastore.migrations.MigrateDatabase100To200

All Implemented Interfaces:

Migration

public class MigrateDatabase100To200
extends java.lang.Object
implements Migration

Migration to repair datastores impacted by issues 326 and 329.

Added migration on `Datastore` opening to repair datastores that have documents with multiple identical revision IDs (as caused by issue #329). The migration will delete duplicate revisions and correct the document tree. It will also re-evaluate the winning revision resolving issues caused by #326.

It also deletes duplicate entries with the same sequence and attachment filename, which could have been force inserted into the attachments table during a multipart attachment pull during identical replications running in parallel.

API Status: Private - API users are discouraged from using this class as fields, method signatures, and implementation details may be subject to change

Constructor Summary

Constructors

Constructor and Description
MigrateDatabase100To200(java.lang.String[] schemaUpdates)

Method Summary

Modifier and Type	Method and Description
void	runMigration(SQLDatabase db) Implementors should run all migration steps in this method.

Methods inherited from class java.lang.Object

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

Constructor Detail

MigrateDatabase100To200

public MigrateDatabase100To200(java.lang.String[] schemaUpdates)

Method Detail

runMigration

public void runMigration(SQLDatabase db)
                  throws java.lang.Exception

Description copied from interface: Migration

Implementors should run all migration steps in this method. Throw an exception if the migration fails.

Specified by:

runMigration in interface Migration

Parameters:

db - The SQLDatabase to migrate

Throws:

java.lang.Exception - an exception was thrown during migration