Extension SDK 9.0.5

oracle.jdeveloper.cm.ds.db
Class PKConstraint

java.lang.Object
  extended byoracle.jdeveloper.cm.ds.db.AbstractDBObject
      extended byoracle.jdeveloper.cm.ds.db.Constraint
          extended byoracle.jdeveloper.cm.ds.db.ColumnConstraint
              extended byoracle.jdeveloper.cm.ds.db.UniqueConstraint
                  extended byoracle.jdeveloper.cm.ds.db.PKConstraint
All Implemented Interfaces:
Copyable, DBObject, Subject

public class PKConstraint
extends UniqueConstraint

A PKConstraint represents a Primary Key constraint. A Primary Key combines a NOT NULL constraint and a unique constraint in a single declaration. That is, it prohibits multiple rows from having the same value in the same column or combination of columns and prohibits values from being null.


Field Summary
static java.lang.String CONSTRAINT_TYPE
           
 
Fields inherited from class oracle.jdeveloper.cm.ds.db.Constraint
TYPE
 
Fields inherited from interface oracle.jdeveloper.cm.ds.db.DBObject
COMMENT
 
Fields inherited from interface oracle.ide.addin.Subject
OBJECT_MODIFIED
 
Constructor Summary
PKConstraint()
          Constructs a new PKConstraint.
PKConstraint(java.lang.String name, Relation relation)
          Constructs a new PKConstraint on the specified Relation with the specified name.
 
Method Summary
 java.lang.Object copyTo(java.lang.Object target)
          Copies the state of this DBObject to another instance.
 boolean equals(java.lang.Object target)
           
 java.lang.String getConstraintType()
          Retrieves the type of constraint represented by this instance.
 
Methods inherited from class oracle.jdeveloper.cm.ds.db.ColumnConstraint
addColumn, copyToImpl, equalsImpl, getColumns, removeColumn, setColumns, setRelation
 
Methods inherited from class oracle.jdeveloper.cm.ds.db.Constraint
copyToImpl, equalsImpl, getRelation, getType, isEnabled, setEnabled
 
Methods inherited from class oracle.jdeveloper.cm.ds.db.AbstractDBObject
attach, compareToImpl, copyToImpl, detach, equalsImpl, getID, getName, getProperties, getProperty, hashCode, notifyObservers, setID, setName, setProperties, setProperty, toString
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Field Detail

CONSTRAINT_TYPE

public static final java.lang.String CONSTRAINT_TYPE
See Also:
Constant Field Values
Constructor Detail

PKConstraint

public PKConstraint()
Constructs a new PKConstraint.


PKConstraint

public PKConstraint(java.lang.String name,
                    Relation relation)
Constructs a new PKConstraint on the specified Relation with the specified name.

Parameters:
relation - the relation on which this constraint acts
Method Detail

copyTo

public java.lang.Object copyTo(java.lang.Object target)
Description copied from interface: DBObject
Copies the state of this DBObject to another instance. If null is specified for the target, a new instance will be created.

The entire state of the object will be copied, with a few exceptions. In particular, any observers registered will NOT be copied. In cases where this instance contains child DBObjects, new instances of those children will be created, and the state copied to them. The copy will thus contain its own unique state; after making the copy, changing one instance will not cause any changes to occur to the copy. The properties will be copied; however, copies will not be made of the values referenced by the properties - thus, the copy will refer to the same instance as the original. Child objects that are copied will still point to the original parent; it is the responsibility of a copied parent to update the parent of copies of its children point to the copy of itself.

The ID associated with this object will not be copied. If the copy is intended to be a temporary copy of this object (to be used in a dialog editing the object for example), then the caller should explicitly set the ID of the copy to be the same as on this object. However, if the new object is intended to exist separately from this object, the caller should ensure that the new object have a different ID from this object.

Specified by:
copyTo in interface DBObject
Overrides:
copyTo in class UniqueConstraint

equals

public boolean equals(java.lang.Object target)
Overrides:
equals in class UniqueConstraint

getConstraintType

public java.lang.String getConstraintType()
Description copied from class: Constraint
Retrieves the type of constraint represented by this instance. Valid constraint types can vary depending on the database. Examples of constraint types include primary key constraints, foreign key constraints, and check constraints.

Overrides:
getConstraintType in class UniqueConstraint

Extension SDK

 

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