org.mmbase.bridge.implementation
Class BasicRelationManager

java.lang.Object
  |
  +--org.mmbase.bridge.implementation.BasicNode
        |
        +--org.mmbase.bridge.implementation.BasicNodeManager
              |
              +--org.mmbase.bridge.implementation.BasicRelationManager

All Implemented Interfaces:

java.lang.Comparable, Node, NodeManager, RelationManager, SizeMeasurable

public class BasicRelationManager

extends BasicNodeManager

implements RelationManager

Version:

$Id: BasicRelationManager.java,v 1.19.2.2 2003/04/08 14:32:23 pierre Exp $

Author:

Rob Vermeulen, Pierre van Rooden

Field Summary

MMObjectNode

relDefNode

Fields inherited from class org.mmbase.bridge.implementation.BasicNodeManager

builder, fieldTypes

Fields inherited from class org.mmbase.bridge.implementation.BasicNode

account, ACTION_COMMIT, ACTION_CREATE, ACTION_DELETE, ACTION_EDIT, cloud, isnew, mmb, nodeManager, noderef, temporaryNodeId

Fields inherited from interface org.mmbase.bridge.RelationManager

BIDIRECTIONAL, UNIDIRECTIONAL

Fields inherited from interface org.mmbase.bridge.NodeManager

ORDER_CREATE, ORDER_EDIT, ORDER_LIST, ORDER_NONE, ORDER_SEARCH

Method Summary

Node	createNode() Creates a new node.
Relation	createRelation(Node sourceNode, Node destinationNode) Adds a relation from this type.
Relation	createRelation(Node sourceNode, RelationManager relationManager) This method from Node is redeclared here to prevent an ambiguous invocation of method.
int	getBuilder()
NodeManager	getDestinationManager() Retrieves the type of node that can act as the destination of a relation of this type.
int	getDirectionality() Retrieves the directionality for this type (the default assigned to a new relation).
java.lang.String	getForwardGUIName() Retrieves the gui name (prompt) of the role from source to destination
java.lang.String	getForwardRole() Retrieves the role of the source to the destination
java.lang.String	getReciprocalGUIName() Retrieves the gui name (prompt) of the role from destination to source
java.lang.String	getReciprocalRole() Retrieves the role of the destination to the source
RelationList	getRelations(Node node) Retrieves all the relations of this type from a given node.
NodeManager	getSourceManager() Retrieves the NodeManager of node that can act as the source of a relation of this type.
protected void	initManager() Initializes the NodeManager: determines the MMObjectBuilder from the passed node (reldef or typerel), and fillls temporary variables to maintain status.
boolean	mayCreateRelation(Node sourceNode, Node destinationNode) Check if the current user may create a new relation of this type between the specified nodes.

Methods inherited from class org.mmbase.bridge.implementation.BasicNodeManager

commit, delete, getAllowedRelations, getAllowedRelations, getAllowedRelations, getDescription, getField, getFields, getFields, getGUIName, getGUIName, getInfo, getInfo, getList, getList, getList, getName, getParent, hasField, mayCreateNode

Methods inherited from class org.mmbase.bridge.implementation.BasicNode

_setValue, cancel, compareTo, countRelatedNodes, countRelations, countRelations, createAlias, delete, deleteAlias, deleteRelations, deleteRelations, edit, equals, finalize, getAliases, getBooleanValue, getByteSize, getByteSize, getByteValue, getCloud, getContext, getDoubleValue, getFieldValue, getFieldValue, getFloatValue, getFunctionValue, getIntValue, getLongValue, getNode, getNodeManager, getNodeValue, getNumber, getPossibleContexts, getRelatedNodes, getRelatedNodes, getRelatedNodes, getRelatedNodes, getRelatedNodes, getRelations, getRelations, getRelations, getRelations, getStringValue, getValue, getXMLValue, getXMLValue, hashCode, hasRelations, init, invalidateNode, isNodeManager, isRelation, isRelationManager, mayChangeContext, mayDelete, mayLink, mayWrite, setBooleanValue, setByteValue, setContext, setDoubleValue, setFloatValue, setIntValue, setLongValue, setNode, setNodeValue, setStringValue, setValue, setXMLValue, toNodeManager, toRelation, toRelationManager, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mmbase.bridge.NodeManager

getAllowedRelations, getAllowedRelations, getAllowedRelations, getCloud, getDescription, getField, getFields, getFields, getGUIName, getGUIName, getInfo, getInfo, getList, getList, getList, getName, getParent, hasField, mayCreateNode

Methods inherited from interface org.mmbase.bridge.Node

cancel, commit, countRelatedNodes, countRelations, countRelations, createAlias, delete, delete, deleteAlias, deleteRelations, deleteRelations, getAliases, getBooleanValue, getByteValue, getContext, getDoubleValue, getFieldValue, getFieldValue, getFloatValue, getFunctionValue, getIntValue, getLongValue, getNodeManager, getNodeValue, getNumber, getPossibleContexts, getRelatedNodes, getRelatedNodes, getRelatedNodes, getRelatedNodes, getRelatedNodes, getRelations, getRelations, getRelations, getRelations, getStringValue, getValue, getXMLValue, getXMLValue, hasRelations, isNodeManager, isRelation, isRelationManager, mayChangeContext, mayDelete, mayLink, mayWrite, setBooleanValue, setByteValue, setContext, setDoubleValue, setFloatValue, setIntValue, setLongValue, setNodeValue, setStringValue, setValue, setXMLValue, toNodeManager, toRelation, toRelationManager, toString

Methods inherited from interface java.lang.Comparable

compareTo

Field Detail

relDefNode

public MMObjectNode relDefNode

Method Detail

initManager

protected void initManager()

Initializes the NodeManager: determines the MMObjectBuilder from the passed node (reldef or typerel), and fillls temporary variables to maintain status.

Overrides:

initManager in class BasicNodeManager

createNode

public Node createNode()

Description copied from interface: NodeManager

Creates a new node. The returned node will not be visible in the cloud until the commit() method is called on this node. Until then it will have a temporary node number.

Specified by:

createNode in interface NodeManager

Overrides:

createNode in class BasicNodeManager

Following copied from interface: org.mmbase.bridge.NodeManager

Returns:

the new Node

getForwardRole

public java.lang.String getForwardRole()

Description copied from interface: RelationManager

Retrieves the role of the source to the destination

Specified by:

getForwardRole in interface RelationManager

Following copied from interface: org.mmbase.bridge.RelationManager

Returns:

the role as a String

getReciprocalRole

public java.lang.String getReciprocalRole()

Description copied from interface: RelationManager

Retrieves the role of the destination to the source

Specified by:

getReciprocalRole in interface RelationManager

Following copied from interface: org.mmbase.bridge.RelationManager

Returns:

the role as a String

getForwardGUIName

public java.lang.String getForwardGUIName()

Description copied from interface: RelationManager

Retrieves the gui name (prompt) of the role from source to destination

Specified by:

getForwardGUIName in interface RelationManager

Following copied from interface: org.mmbase.bridge.RelationManager

Returns:

the name as a String

getReciprocalGUIName

public java.lang.String getReciprocalGUIName()

Description copied from interface: RelationManager

Retrieves the gui name (prompt) of the role from destination to source

Specified by:

getReciprocalGUIName in interface RelationManager

Following copied from interface: org.mmbase.bridge.RelationManager

Returns:

the name as a String

getDirectionality

public int getDirectionality()

Description copied from interface: RelationManager

Retrieves the directionality for this type (the default assigned to a new relation).

Specified by:

getDirectionality in interface RelationManager

Following copied from interface: org.mmbase.bridge.RelationManager

Returns:

one of the directionality constants

getBuilder

public int getBuilder()

getSourceManager

public NodeManager getSourceManager()

Description copied from interface: RelationManager

Retrieves the NodeManager of node that can act as the source of a relation of this type.

Specified by:

getSourceManager in interface RelationManager

Following copied from interface: org.mmbase.bridge.RelationManager

Returns:

the source NodeManager

getDestinationManager

public NodeManager getDestinationManager()

Description copied from interface: RelationManager

Retrieves the type of node that can act as the destination of a relation of this type.

Specified by:

getDestinationManager in interface RelationManager

Following copied from interface: org.mmbase.bridge.RelationManager

Returns:

the destination NodeManager

createRelation

public Relation createRelation(Node sourceNode,
                               RelationManager relationManager)

Description copied from interface: RelationManager

This method from Node is redeclared here to prevent an ambiguous invocation of method. reson: the the method in the base class (Node) is more specific than the one in the RelationManager (RelationManager extends Node).

Specified by:

createRelation in interface RelationManager

Overrides:

createRelation in class BasicNode

Following copied from interface: org.mmbase.bridge.Node

Parameters:

destinationNode - the node to which you want to relate this node

relationManager - the relation manager you want to use

Returns:

the added relation

Throws:

BridgeException - if the relation manager is not the right one for this type of relation

createRelation

public Relation createRelation(Node sourceNode,
                               Node destinationNode)

Description copied from interface: RelationManager

Adds a relation from this type.

Specified by:

createRelation in interface RelationManager

Following copied from interface: org.mmbase.bridge.RelationManager

Parameters:

sourceNode - the node from which you want to relate

destinationNode - the node to which you want to relate

Returns:

the added relation

getRelations

public RelationList getRelations(Node node)

Description copied from interface: RelationManager

Retrieves all the relations of this type from a given node.

Specified by:

getRelations in interface RelationManager

Following copied from interface: org.mmbase.bridge.RelationManager

Parameters:

node - the node from which to give the relations

Returns:

a list of relations

mayCreateRelation

public boolean mayCreateRelation(Node sourceNode,
                                 Node destinationNode)

Description copied from interface: RelationManager

Check if the current user may create a new relation of this type between the specified nodes.

Specified by:

mayCreateRelation in interface RelationManager

Following copied from interface: org.mmbase.bridge.RelationManager

Returns:

Check if the current user may create a new relation of this type between the specified nodes.