net.akaish.kitty.orm.dumputils.migrations

Class KittySimpleMigrator

java.lang.Object

net.akaish.kitty.orm.dumputils.migrations.KittyORMVersionMigrator

net.akaish.kitty.orm.dumputils.migrations.KittySimpleMigrator

public class KittySimpleMigrator
extends KittyORMVersionMigrator

Migrator that returns script automatically generated with KittySimpleMigrationScriptGenerator
Be aware to use this migrator with database schema that differs with old version in things related with constraints
Main idea is that this migrator would do following things:
1) Gets list of existing tables and indexes
2) Generates diff collection without constraint checks on tables and table columns
3) If some of tables in new version would have less fields than old version, old version table would be renamed, new version of table would be created and all values except redundant column values would be copied to new location
4) Is some of tables in new version would have more fields, than would be generated alter table add column query list
5) If new version table has same amount of same named columns as in old version table, nothing would be done
6) If new version tableIndex not present in old schema, it would be created
7) etc
Just check KittySimpleMigrationScriptGenerator for more info Created by akaish on 19.10.18.

Author:

akaish (Denis Bogomolov)

Field Summary

Fields inherited from class net.akaish.kitty.orm.dumputils.migrations.KittyORMVersionMigrator

AME_SEQUENCE_NOT_APPLICABLE, context, currentVersion, logOn, logTag, migrationFactory, migrations, oldVersion, schemaName

Constructor Summary

Constructors

Constructor and Description
KittySimpleMigrator(int oldVersion, int currentVersion, android.content.Context ctx, java.lang.String schemaName, java.lang.String logTag, boolean logOn, java.lang.Object[] factoryParameters, java.lang.Object[] migrationsParameters) Simple migration script generator migrator.

Method Summary

Modifier and Type	Method and Description
protected <T extends KittyMigrationFactory> T	getMigrationFactory(java.lang.Object... parameters) Returns child depended migrations factory
boolean	isMigrationSequenceApplicable() Returns true if migration sequence can be applied step by step from old to current databaseClass versions
protected void	setMigrations(java.lang.Object... parameters) Fills KittyORMVersionMigrator.migrations with KittyORMVersionMigrator.migrationFactory
protected void	setParameters(java.lang.Object[] factoryParameters, java.lang.Object[] migrationsParameters)

Methods inherited from class net.akaish.kitty.orm.dumputils.migrations.KittyORMVersionMigrator

getMigrations, getMigrationsIterator, orderMigrationsList

Methods inherited from class java.lang.Object

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

Constructor Detail

KittySimpleMigrator

public KittySimpleMigrator(int oldVersion,
                           int currentVersion,
                           android.content.Context ctx,
                           java.lang.String schemaName,
                           java.lang.String logTag,
                           boolean logOn,
                           java.lang.Object[] factoryParameters,
                           java.lang.Object[] migrationsParameters)

Simple migration script generator migrator. To use it you should pass an instance of KittyDatabaseConfiguration as [0] of migrationsParameters.

Parameters:

oldVersion -

currentVersion -

ctx -

schemaName -

logTag -

logOn -

factoryParameters -

migrationsParameters -

Method Detail

setParameters

protected void setParameters(java.lang.Object[] factoryParameters,
                             java.lang.Object[] migrationsParameters)

Specified by:

setParameters in class KittyORMVersionMigrator

getMigrationFactory

protected <T extends KittyMigrationFactory> T getMigrationFactory(java.lang.Object... parameters)

Description copied from class: KittyORMVersionMigrator

Returns child depended migrations factory

Specified by:

getMigrationFactory in class KittyORMVersionMigrator

Returns:

isMigrationSequenceApplicable

public boolean isMigrationSequenceApplicable()

Description copied from class: KittyORMVersionMigrator

Returns true if migration sequence can be applied step by step from old to current databaseClass versions

Overrides:

isMigrationSequenceApplicable in class KittyORMVersionMigrator

Returns:

setMigrations

protected void setMigrations(java.lang.Object... parameters)

Fills KittyORMVersionMigrator.migrations with KittyORMVersionMigrator.migrationFactory

Specified by:

setMigrations in class KittyORMVersionMigrator

Parameters:

parameters -