org.mmbase.bridge.implementation
Class BasicRelation

java.lang.Object
  org.mmbase.bridge.util.AbstractNode
      org.mmbase.bridge.implementation.BasicNode
          org.mmbase.bridge.implementation.BasicRelation

All Implemented Interfaces:

Comparable, Node, Relation, SizeMeasurable

public class BasicRelation

extends BasicNode

implements Relation

Version:

$Id: BasicRelation.java,v 1.40 2006/01/24 12:29:27 michiel Exp $

Author:

Rob Vermeulen, Pierre van Rooden

Warning: No Java Documentation Available.

Field Summary

protected int	dnum
protected boolean	relationChanged
protected int	snum

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

cloud, nodeManager, noderef

Fields inherited from class org.mmbase.bridge.util.AbstractNode

ACTION_COMMIT, ACTION_CREATE, ACTION_DELETE, ACTION_EDIT

Method Summary

void	commit() Commit the node to the database.
Node	getDestination() Retrieves the destination of the relation
RelationManager	getRelationManager() Retrieves the RelationManager used
Node	getSource() Retrieves the source of the relation
protected void	init() Initializes the node.
boolean	isRelation() Determine whether this Node is a Relation.
void	setDestination(Node node) set the destination of the relation
void	setSource(Node node) set the source of the relation
void	setValueWithoutProcess(String fieldName, Object value) Like setValue, but skips any processing that MMBase would normally perform on a field.
Relation	toRelation() Returns this as a Relation.

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

cancel, countRelatedNodes, countRelatedNodes, createAlias, createFunctionValue, createParameters, delete, deleteAlias, deleteRelations, edit, finalize, getAliases, getBooleanValue, getByteSize, getByteSize, getByteValue, getChanged, getCloud, getContext, getDateValue, getDoubleValue, getFloatValue, getFunctions, getInputStreamValue, getIntValue, getListValue, getLongValue, getNode, getNodeFunction, getNodeManager, getNodeValue, getNumber, getPossibleContexts, getRelatedNodes, getRelations, getRelations, getSize, getStringValue, getValueWithoutProcess, getXMLValue, hashCode, hasRelations, invalidateNode, isChanged, isChanged, isNew, isNull, mayChangeContext, mayDelete, mayWrite, setContext, setNode, setNodeManager, setSize, setValueWithoutChecks, toNodeNumber, toString

Methods inherited from class org.mmbase.bridge.util.AbstractNode

compareTo, countRelations, countRelations, createRelation, delete, deleteRelations, equals, getFieldValue, getFieldValue, getFunction, getFunctionValue, getObjectValue, getRelatedNodes, getRelatedNodes, getRelatedNodes, getRelatedNodes, getRelations, getRelations, getRelations, getValue, getXMLValue, isNodeManager, isRelationManager, processCommit, setBooleanValue, setByteValue, setDateValue, setDoubleValue, setFloatValue, setInputStreamValue, setIntValue, setListValue, setLongValue, setNodeValue, setObjectValue, setStringValue, setValue, setXMLValue, toNodeManager, toRelationManager, validate

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mmbase.bridge.Node

cancel, countRelatedNodes, countRelatedNodes, countRelations, countRelations, createAlias, createParameters, createRelation, delete, delete, deleteAlias, deleteRelations, deleteRelations, getAliases, getBooleanValue, getByteValue, getChanged, getCloud, getContext, getDateValue, getDoubleValue, getFieldValue, getFieldValue, getFloatValue, getFunction, getFunctions, getFunctionValue, getInputStreamValue, getIntValue, getListValue, getLongValue, getNodeManager, getNodeValue, getNumber, getObjectValue, getPossibleContexts, getRelatedNodes, getRelatedNodes, getRelatedNodes, getRelatedNodes, getRelatedNodes, getRelations, getRelations, getRelations, getRelations, getRelations, getSize, getStringValue, getValue, getValueWithoutProcess, getXMLValue, getXMLValue, hasRelations, isChanged, isChanged, isNew, isNodeManager, isNull, isRelationManager, mayChangeContext, mayDelete, mayWrite, setBooleanValue, setByteValue, setContext, setDateValue, setDoubleValue, setFloatValue, setInputStreamValue, setIntValue, setListValue, setLongValue, setNodeValue, setObjectValue, setStringValue, setValue, setXMLValue, toNodeManager, toRelationManager, toString, validate

Methods inherited from interface java.lang.Comparable

compareTo

Field Detail

snum

protected int snum

dnum

protected int dnum

relationChanged

protected boolean relationChanged

Method Detail

isRelation

public final boolean isRelation()

Description copied from interface: Node

Determine whether this Node is a Relation.

Specified by:

isRelation in interface Node

Overrides:

isRelation in class AbstractNode

toRelation

public Relation toRelation()

Description copied from interface: Node

Returns this as a Relation.

Specified by:

toRelation in interface Node

Overrides:

toRelation in class AbstractNode

init

protected void init()

Initializes the node. Determines nodemanager and cloud (depending on information available), Sets references to MMBase modules and initializes state in case of a transaction.

Overrides:

init in class BasicNode

getSource

public Node getSource()

Description copied from interface: Relation

Retrieves the source of the relation

Specified by:

getSource in interface Relation

Returns:

the source node

getDestination

public Node getDestination()

Description copied from interface: Relation

Retrieves the destination of the relation

Specified by:

getDestination in interface Relation

Returns:

the destination node

setSource

public void setSource(Node node)

Description copied from interface: Relation

set the source of the relation

Specified by:

setSource in interface Relation

Parameters:

node - the source node

setDestination

public void setDestination(Node node)

Description copied from interface: Relation

set the destination of the relation

Specified by:

setDestination in interface Relation

Parameters:

node - the destination node

getRelationManager

public RelationManager getRelationManager()

Description copied from interface: Relation

Retrieves the RelationManager used

Specified by:

getRelationManager in interface Relation

Returns:

the RelationManager

setValueWithoutProcess

public void setValueWithoutProcess(String fieldName,
                                   Object value)

Description copied from interface: Node

Like setValue, but skips any processing that MMBase would normally perform on a field. You can use this to set data on fields that are 'system' defined, to prevent (among other things) infinite recursion. Use with care - in general processing of a field has a purpose!

Specified by:

setValueWithoutProcess in interface Node

Overrides:

setValueWithoutProcess in class AbstractNode

Parameters:

fieldName - name of field

value - new value of the field

commit

public void commit()

Description copied from interface: Node

Commit the node to the database. Prior to committing, the values are processed by any commit-processors associated with the datatype of the node's fields), then validated. Makes this node and/or the changes made to this node visible to the cloud. If this method is called for the first time on this node it will make this node visible to the cloud, otherwise the modifications made to this node using the set methods will be made visible to the cloud. This action fails if the current node is not in edit mode. If the node is in a transaction, nothing happens - actual committing occurs through the transaction.

Specified by:

commit in interface Node

Overrides:

commit in class BasicNode