helma.objectmodel.db
Class DbKey

java.lang.Object
  helma.objectmodel.db.DbKey

All Implemented Interfaces:

Key, java.io.Serializable

public final class DbKey
extends java.lang.Object
implements Key, java.io.Serializable

This is the internal representation of a database key. It is constructed from the logical table (type) name and the object's primary key within the table. Currently only single keys are supported.

See Also:

Serialized Form

Constructor Summary

DbKey(DbMapping dbmap, java.lang.String id)
make a key for a persistent Object, describing its datasource and id.

Method Summary

boolean	equals(java.lang.Object what)
java.lang.String	getID() Get the key's ID part
Key	getParentKey() Get the key's parent key
java.lang.String	getStorageName() Get the key's storage id
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DbKey

public DbKey(DbMapping dbmap,
             java.lang.String id)

make a key for a persistent Object, describing its datasource and id.

Method Detail

equals

public boolean equals(java.lang.Object what)

Overrides:

equals in class java.lang.Object

Parameters:

what - the other key to be compared with this one

Returns:

true if both keys are identical

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

Returns:

this key's hash code

getParentKey

public Key getParentKey()

Description copied from interface: Key

Get the key's parent key

Specified by:

getParentKey in interface Key

Returns:

the key of this key's object's parent object

getStorageName

public java.lang.String getStorageName()

Description copied from interface: Key

Get the key's storage id

Specified by:

getStorageName in interface Key

Returns:

the unique storage name for this key's object

getID

public java.lang.String getID()

Description copied from interface: Key

Get the key's ID part

Specified by:

getID in interface Key

Returns:

this key's object's id

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

a string representation for this key