public final Enum UniqueConstraintSchemaUpdateStrategy

Class Inheritance

extends Enum<UniqueConstraintSchemaUpdateStrategy>

java.lang.Object
java.lang.Enum
org.hibernate.tool.hbm2ddl.UniqueConstraintSchemaUpdateStrategy

Imports

java.util.Locale, org.jboss.logging.Logger

Unique columns and unique keys both use unique constraints in most dialects. SchemaUpdate needs to create these constraints, but DB's support for finding existing constraints is extremely inconsistent. Further, non-explicitly-named unique constraints use randomly generated characters.

Author: Brett Meyer

Field Summary

Modifier and Type	Field and Description
public static final UniqueConstraintSchemaUpdateStrategy	DROP_RECREATE_QUIETLY Attempt to drop, then (re-)create each unique constraint.
private static final Logger	log
public static final UniqueConstraintSchemaUpdateStrategy	RECREATE_QUIETLY Attempt to (re-)create unique constraints, ignoring exceptions thrown (e.g., if the constraint already existed)
public static final UniqueConstraintSchemaUpdateStrategy	SKIP Do not attempt to create unique constraints on a schema update

Constructor Summary

Access	Constructor and Description
private	UniqueConstraintSchemaUpdateStrategy()

Method Summary

Modifier and Type	Method and Description
public static UniqueConstraintSchemaUpdateStrategy	byName(String name)
public static UniqueConstraintSchemaUpdateStrategy	interpret(Object setting)
public static UniqueConstraintSchemaUpdateStrategy	valueOf(String name)
public static UniqueConstraintSchemaUpdateStrategy[]	values()

Inherited from java.lang.Enum:: clone compareTo describeConstable equals finalize getDeclaringClass hashCode name ordinal toString valueOf

Field Detail

DROP_RECREATE_QUIETLY	back to summary
public static final UniqueConstraintSchemaUpdateStrategy DROP_RECREATE_QUIETLY Attempt to drop, then (re-)create each unique constraint. Ignore any exceptions thrown. Note that this will require unique keys/constraints to be explicitly named. If Hibernate generates the names (randomly), the drop will not work. DEFAULT

log	back to summary
private static final Logger log

RECREATE_QUIETLY	back to summary
public static final UniqueConstraintSchemaUpdateStrategy RECREATE_QUIETLY Attempt to (re-)create unique constraints, ignoring exceptions thrown (e.g., if the constraint already existed)

SKIP	back to summary
public static final UniqueConstraintSchemaUpdateStrategy SKIP Do not attempt to create unique constraints on a schema update

Constructor Detail

UniqueConstraintSchemaUpdateStrategy	back to summary
private UniqueConstraintSchemaUpdateStrategy()

Method Detail

byName	back to summary
public static UniqueConstraintSchemaUpdateStrategy byName(String name)

interpret	back to summary
public static UniqueConstraintSchemaUpdateStrategy interpret(Object setting)

valueOf	back to summary
public static UniqueConstraintSchemaUpdateStrategy valueOf(String name)

values	back to summary
public static UniqueConstraintSchemaUpdateStrategy[] values()