org.axiondb
Interface Constraint

All Superinterfaces:

java.io.Serializable

All Known Subinterfaces:

SelectableBasedConstraint

All Known Implementing Classes:

BaseConstraint, BaseSelectableBasedConstraint, CheckConstraint, ForeignKeyConstraint, NotNullConstraint, NullConstraint, PrimaryKeyConstraint, UniqueConstraint

public interface Constraint
extends java.io.Serializable

A database constraint, such as UNIQUE or NOT NULL.

Version:

$Revision: 1.16 $ $Date: 2005/12/20 18:32:40 $

Method Summary

boolean	evaluate(RowEvent event) Evaluate the given event under me.
boolean	evaluate(RowEvent event, RowDecorator dec) Evaluate the given event under me.
boolean	evaluate(RowIterator oldRows, RowIterator newRows, Table table)
java.lang.String	getName() Get my name.
java.lang.String	getType() Get a human-readable descrption of the type of constraint I represent.
boolean	isDeferrable() Return whether or not I am deferrable.
boolean	isDeferred() Return whether or not I am deferred.
void	resolve(Database db, TableIdentifier table) Resolve any unresolved org.axiondb.Selectableidentifiers I may have.
void	setDeferrable(boolean deferrable) Set whether or not I am deferrable.
void	setDeferred(boolean deferred) Set whether or not I am deferred.
void	setName(java.lang.String name) Set my name.

Method Detail

evaluate

boolean evaluate(RowEvent event)
                 throws AxionException

Evaluate the given event under me. Returns false if the constraint I represent has been violated.

Throws:

AxionException

evaluate

boolean evaluate(RowEvent event,
                 RowDecorator dec)
                 throws AxionException

Evaluate the given event under me. Returns false if the constraint I represent has been violated.

Throws:

AxionException

evaluate

boolean evaluate(RowIterator oldRows,
                 RowIterator newRows,
                 Table table)
                 throws AxionException

Throws:

AxionException

getName

java.lang.String getName()

Get my name.

getType

java.lang.String getType()

Get a human-readable descrption of the type of constraint I represent.

isDeferrable

boolean isDeferrable()

Return whether or not I am deferrable.

isDeferred

boolean isDeferred()

Return whether or not I am deferred. Deferred constraints are not evaluated until the transaction is committed.

resolve

void resolve(Database db,
             TableIdentifier table)
             throws AxionException

Resolve any unresolved org.axiondb.Selectableidentifiers I may have.

Throws:

AxionException

setDeferrable

void setDeferrable(boolean deferrable)

Set whether or not I am deferrable.

setDeferred

void setDeferred(boolean deferred)
                 throws AxionException

Set whether or not I am deferred. Deferred constraints are not evaluated until the transaction is committed. Throws an exception if I am not deferrableand deferred is true.

Throws:

AxionException

setName

void setName(java.lang.String name)

Set my name.