Module org.tentackle.model

Package org.tentackle.model.migrate

Class TableMigrator

java.lang.Object

org.tentackle.model.migrate.TableMigrator

public class TableMigrator
extends Object

Handles the migration of tables.

Author:

harald

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	TableMigrator.Result	Migration result. Contains the migration parameters and the resulting SQL code.

Constructor Summary

Constructors

Constructor	Description
TableMigrator(Entity entity, Collection<ForeignKey> foreignKeys, Backend backend, TableMetaData table)	Creates a table migrator.

Method Summary

Modifier and Type	Method	Description
Backend	getBackend()	Gets the backend.
Entity	getEntity()	Gets the model's entity.
TableMetaData	getTable()	Gets the database's table meta data.
TableMigrator.Result	migrate(Collection<Pattern> hints, Collection<ColumnMigration> columnMigrations, Map<String,String> renameColumns)	Create SQL code to migrate the table.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

TableMigrator

public TableMigrator(Entity entity,
 Collection<ForeignKey> foreignKeys,
 Backend backend,
 TableMetaData table)

Creates a table migrator.

Parameters:

entity - the model's entity

foreignKeys - the foreign keys related to given entity

backend - the backend

table - the database's table meta data

Method Details

getBackend

public Backend getBackend()

Gets the backend.

Returns:

the backend

getEntity

public Entity getEntity()

Gets the model's entity.

Returns:

the model's entity

getTable

public TableMetaData getTable()

Gets the database's table meta data.

Returns:

the database's table meta data

toString

public String toString()

Overrides:

toString in class Object

migrate

public TableMigrator.Result migrate(Collection<Pattern> hints,
 Collection<ColumnMigration> columnMigrations,
 Map<String,String> renameColumns)
                             throws ModelException

Create SQL code to migrate the table.

Parameters:

hints - hints to control the created output, null or empty if none

columnMigrations - explicit column migrations, null or empty if none

renameColumns - explicit column rename hints, null or empty if none

Returns:

the migration result

Throws:

ModelException - if migration failed