org.hibernate.dialect.unique

Class DB2UniqueDelegate

java.lang.Object

org.hibernate.dialect.unique.DefaultUniqueDelegate

org.hibernate.dialect.unique.DB2UniqueDelegate

All Implemented Interfaces:

UniqueDelegate

public class DB2UniqueDelegate
extends DefaultUniqueDelegate

DB2 does not allow unique constraints on nullable columns. Rather than forcing "not null", use unique *indexes* instead.

Author:

Brett Meyer

Field Summary

Fields inherited from class org.hibernate.dialect.unique.DefaultUniqueDelegate

dialect

Constructor Summary

Constructors

Constructor and Description
DB2UniqueDelegate(Dialect dialect)

Method Summary

Methods

Modifier and Type	Method and Description
String	applyUniquesOnAlter(UniqueKey uniqueKey) If creating unique constraints in separate alter statements is supported, generate the necessary "alter" syntax for the given key.
String	applyUniquesOnAlter(UniqueKey uniqueKey, String defaultCatalog, String defaultSchema) If creating unique constraints in separate alter statements is supported, generate the necessary "alter" syntax for the given key.
String	dropUniquesOnAlter(UniqueKey uniqueKey) If dropping unique constraints in separate alter statements is supported, generate the necessary "alter" syntax for the given key.
String	dropUniquesOnAlter(UniqueKey uniqueKey, String defaultCatalog, String defaultSchema) If dropping unique constraints in separate alter statements is supported, generate the necessary "alter" syntax for the given key.

Methods inherited from class org.hibernate.dialect.unique.DefaultUniqueDelegate

applyUniquesToTable, applyUniquesToTable, applyUniqueToColumn, applyUniqueToColumn, uniqueConstraintSql, uniqueConstraintSql

Methods inherited from class java.lang.Object

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

Constructor Detail

DB2UniqueDelegate

public DB2UniqueDelegate(Dialect dialect)

Method Detail

applyUniquesOnAlter

public String applyUniquesOnAlter(UniqueKey uniqueKey,
                         String defaultCatalog,
                         String defaultSchema)

Description copied from interface: UniqueDelegate

If creating unique constraints in separate alter statements is supported, generate the necessary "alter" syntax for the given key.

Specified by:

applyUniquesOnAlter in interface UniqueDelegate

Overrides:

applyUniquesOnAlter in class DefaultUniqueDelegate

Returns:

String

applyUniquesOnAlter

public String applyUniquesOnAlter(UniqueKey uniqueKey)

Description copied from interface: UniqueDelegate

If creating unique constraints in separate alter statements is supported, generate the necessary "alter" syntax for the given key.

Specified by:

applyUniquesOnAlter in interface UniqueDelegate

Overrides:

applyUniquesOnAlter in class DefaultUniqueDelegate

Returns:

String

dropUniquesOnAlter

public String dropUniquesOnAlter(UniqueKey uniqueKey,
                        String defaultCatalog,
                        String defaultSchema)

Description copied from interface: UniqueDelegate

If dropping unique constraints in separate alter statements is supported, generate the necessary "alter" syntax for the given key.

Specified by:

dropUniquesOnAlter in interface UniqueDelegate

Overrides:

dropUniquesOnAlter in class DefaultUniqueDelegate

Returns:

String

dropUniquesOnAlter

public String dropUniquesOnAlter(UniqueKey uniqueKey)

Description copied from interface: UniqueDelegate

If dropping unique constraints in separate alter statements is supported, generate the necessary "alter" syntax for the given key.

Specified by:

dropUniquesOnAlter in interface UniqueDelegate

Overrides:

dropUniquesOnAlter in class DefaultUniqueDelegate

Returns:

String