org.activemath.content.items
Class ItemRelationType

java.lang.Object
  org.activemath.content.items.ItemRelationType

public class ItemRelationType
extends Object

A relation type between Items.

This class implements a typesafe enumeration pattern, so instances of this class can be safely compared with "==".

TODO: We can also add special behavior, such a "isA(ItemRelationType)", so relations can get a hierachy.

Field Summary

static ItemRelationType	AGAINST
static ItemRelationType	FOR
static ItemRelationType	IS_A
protected static Category	log
static ItemRelationType	OF
static ItemRelationType	REFERENCES
static ItemRelationType	SIMILAR

Method Summary

static ItemRelationType	getByName(String relName)
boolean	isA(ItemRelationType rel) Say if a relation type matches a super type.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

log

protected static Category log

FOR

public static final ItemRelationType FOR

IS_A

public static final ItemRelationType IS_A

OF

public static final ItemRelationType OF

REFERENCES

public static final ItemRelationType REFERENCES

SIMILAR

public static final ItemRelationType SIMILAR

AGAINST

public static final ItemRelationType AGAINST

Method Detail

getByName

public static final ItemRelationType getByName(String relName)

Returns:

ItemRelationType instance for type typeName, or null

toString

public String toString()

Overrides:

toString in class Object

isA

public final boolean isA(ItemRelationType rel)

Say if a relation type matches a super type. TODO: complete this method