org.apache.derby.iapi.sql.dictionary

Class SubConstraintDescriptor

java.lang.Object

org.apache.derby.iapi.sql.dictionary.TupleDescriptor

org.apache.derby.iapi.sql.dictionary.UniqueTupleDescriptor

org.apache.derby.iapi.sql.dictionary.SubConstraintDescriptor

Direct Known Subclasses:

SubCheckConstraintDescriptor, SubKeyConstraintDescriptor

public abstract class SubConstraintDescriptor
extends UniqueTupleDescriptor

This interface is used to get information from a SubConstraintDescriptor. A SubKeyConstraintDescriptor is used within the DataDictionary to get auxiliary constraint information from the system table that is auxiliary to sysconstraints.

Method Summary

Modifier and Type	Method and Description
TableDescriptor	getTableDescriptor() Returns the cached TableDescriptor, if supplied, that the constraint is on.
UUID	getUUID() Gets the UUID of the constraint.
abstract boolean	hasBackingIndex() Does this constraint have a backing index?
void	setConstraintId(UUID constraintId) Sets the UUID of the constraint.
void	setTableDescriptor(TableDescriptor td) Caches the TableDescriptor of the table that the constraint is on.
java.lang.String	toString() Convert the SubConstraintDescriptor to a String.

Methods inherited from class org.apache.derby.iapi.sql.dictionary.TupleDescriptor

getDescriptorName, getDescriptorType, isPersistent

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

setConstraintId

public void setConstraintId(UUID constraintId)

Sets the UUID of the constraint.

Parameters:

constraintId - The constraint Id.

getUUID

public UUID getUUID()

Gets the UUID of the constraint.

Specified by:

getUUID in class UniqueTupleDescriptor

Returns:

The UUID of the constraint.

hasBackingIndex

public abstract boolean hasBackingIndex()

Does this constraint have a backing index?

Returns:

boolean Whether or not there is a backing index for this constraint.

setTableDescriptor

public void setTableDescriptor(TableDescriptor td)

Caches the TableDescriptor of the table that the constraint is on.

Parameters:

td - The TableDescriptor.

getTableDescriptor

public TableDescriptor getTableDescriptor()

Returns the cached TableDescriptor, if supplied, that the constraint is on.

Returns:

The cached TableDescriptor, if supplied.

toString

public java.lang.String toString()

Convert the SubConstraintDescriptor to a String.

Overrides:

toString in class java.lang.Object

Returns:

A String representation of this SubConstraintDescriptor