org.hibernate.mapping

Class ForeignKey

java.lang.Object

org.hibernate.mapping.Constraint

org.hibernate.mapping.ForeignKey

All Implemented Interfaces:

Serializable, Exportable, RelationalModel

public class ForeignKey
extends Constraint

A foreign key constraint

Author:

Gavin King

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ForeignKey()

Method Summary

Modifier and Type	Method and Description
void	addReferencedColumns(Iterator referencedColumnsIterator)
void	alignColumns() Validates that columnspan of the foreignkey and the primarykey is the same.
void	disableCreation()
String	generatedConstraintNamePrefix()
String	getExportIdentifier() Get a unique identifier to make sure we are not exporting the same database structure multiple times.
List	getReferencedColumns() Returns the referenced columns if the foreignkey does not refer to the primary key
String	getReferencedEntityName()
Table	getReferencedTable()
boolean	isCascadeDeleteEnabled()
boolean	isCreationEnabled()
boolean	isPhysicalConstraint()
boolean	isReferenceToPrimaryKey() Does this foreignkey reference the primary key of the reference table
void	setCascadeDeleteEnabled(boolean cascadeDeleteEnabled)
void	setName(String name)
void	setReferencedEntityName(String referencedEntityName)
void	setReferencedTable(Table referencedTable)
String	sqlConstraintString(Dialect dialect, String constraintName, String defaultCatalog, String defaultSchema)
String	sqlDropString(Dialect dialect, String defaultCatalog, String defaultSchema)
String	toString()

Methods inherited from class org.hibernate.mapping.Constraint

addColumn, addColumns, columnIterator, containsColumn, generateName, generateName, getColumn, getColumnIterator, getColumns, getColumnSpan, getName, getTable, hashedName, isGenerated, setTable, sqlCreateString

Methods inherited from class java.lang.Object

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

Constructor Detail

ForeignKey

public ForeignKey()

Method Detail

getExportIdentifier

public String getExportIdentifier()

Description copied from interface: Exportable

Get a unique identifier to make sure we are not exporting the same database structure multiple times.

Returns:

The exporting identifier.

disableCreation

public void disableCreation()

isCreationEnabled

public boolean isCreationEnabled()

setName

public void setName(String name)

Overrides:

setName in class Constraint

sqlConstraintString

public String sqlConstraintString(Dialect dialect,
                                  String constraintName,
                                  String defaultCatalog,
                                  String defaultSchema)

Specified by:

sqlConstraintString in class Constraint

getReferencedTable

public Table getReferencedTable()

setReferencedTable

public void setReferencedTable(Table referencedTable)
                        throws MappingException

Throws:

MappingException

alignColumns

public void alignColumns()

Validates that columnspan of the foreignkey and the primarykey is the same.

Furthermore it aligns the length of the underlying tables columns.

getReferencedEntityName

public String getReferencedEntityName()

setReferencedEntityName

public void setReferencedEntityName(String referencedEntityName)

sqlDropString

public String sqlDropString(Dialect dialect,
                            String defaultCatalog,
                            String defaultSchema)

Specified by:

sqlDropString in interface RelationalModel

Overrides:

sqlDropString in class Constraint

isCascadeDeleteEnabled

public boolean isCascadeDeleteEnabled()

setCascadeDeleteEnabled

public void setCascadeDeleteEnabled(boolean cascadeDeleteEnabled)

isPhysicalConstraint

public boolean isPhysicalConstraint()

getReferencedColumns

public List getReferencedColumns()

Returns the referenced columns if the foreignkey does not refer to the primary key

isReferenceToPrimaryKey

public boolean isReferenceToPrimaryKey()

Does this foreignkey reference the primary key of the reference table

addReferencedColumns

public void addReferencedColumns(Iterator referencedColumnsIterator)

toString

public String toString()

Overrides:

toString in class Constraint

generatedConstraintNamePrefix

public String generatedConstraintNamePrefix()

Specified by:

generatedConstraintNamePrefix in class Constraint

Returns:

String The prefix to use in generated constraint names. Examples: "UK_", "FK_", and "PK_".