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oracle.javatools.db
Class PKConstraint
java.lang.Object
oracle.javatools.db.AbstractDBObject
oracle.javatools.db.AbstractChildDBObject
oracle.javatools.db.Constraint
oracle.javatools.db.ColumnConstraint
oracle.javatools.db.UniqueConstraint
oracle.javatools.db.PKConstraint
- All Implemented Interfaces:
- ChildDBObject, DBObject, Copyable, DynamicPropertySet
-
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.
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. |
Methods inherited from class oracle.javatools.db.AbstractDBObject |
changeParent, compareToImpl, copyObject, copyTo, copyTo, copyTo, copyTo, equals, equalsImpl, findOwnedObject, findOwnedObject, findOwnedObject, getChildSupport, getID, getName, getOwnedObjects, getOwnedObjects, getOwnedObjectsImpl, getProperties, getProperty, getReferenceIDs, getReferenceIDsImpl, hashCode, includeOwnedObject, includesType, includesType, removeThisAsParent, replaceReferenceIDs, setID, setName, setProperties, toString |
Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Methods inherited from interface oracle.javatools.db.DBObject |
copyTo, copyTo, copyTo, findOwnedObject, findOwnedObject, getID, getName, getOwnedObjects, getOwnedObjects, getReferenceIDs, replaceReferenceIDs, setID, setName |
CONSTRAINT_TYPE
public static final java.lang.String CONSTRAINT_TYPE
-
- See Also:
- Constant Field Values
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:
a
- string containing the name of the constraint
relation
- the relation on which this constraint acts
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
-
- Returns:
- a string value indicating the type of constraint.
getPrimaryKey
public static final PKConstraint getPrimaryKey(Relation table)
- Returns a primary key for the given table, if it owns one.
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