com.jgraph.example.adapter
Class JGraphSQLBackend

java.lang.Object
  com.jgraph.example.adapter.JGraphSQLBackend

All Implemented Interfaces:

JGraphAdapterBackend

public class JGraphSQLBackend
extends java.lang.Object
implements JGraphAdapterBackend

Maps changes to the graph model to a custom backend, eg. an SQL database. (This should use prepared statements.)

Constructor Summary

JGraphSQLBackend(java.sql.Connection conn, java.lang.Object vertexPrototype, java.lang.Object edgePrototype)

Method Summary

void	attributesChanged(JGraphAdapterModel sender, java.lang.Object cell, java.util.Map attributes, boolean validate)
void	cellRemoved(JGraphAdapterModel sender, java.lang.Object cell, boolean validate)
void	commit() Invoked after no exception has been thrown during a non-validating calling sequence on the backend.
java.lang.Object	createCell(JGraphAdapterModel context, JGraphSQLEntity entity)
void	dump(java.sql.ResultSet rs)
void	edgeAdded(JGraphAdapterModel sender, java.lang.Object object, java.lang.Object source, java.lang.Object target, boolean validate)
java.util.Collection	findEdges(JGraphAdapterModel sender, java.lang.Object query, java.lang.Object parent, java.lang.Object source, java.lang.Object target, boolean directed)
java.util.Collection	findVertices(JGraphAdapterModel sender, java.lang.Object query, java.lang.Object parent)
JGraphSQLEntity	get(java.lang.Object id)
java.lang.Object	getParent(java.lang.Object object)
java.lang.Object	getSource(java.lang.Object object)
java.lang.Object	getTarget(java.lang.Object object)
void	parentChanged(JGraphAdapterModel sender, java.lang.Object child, java.lang.Object parent, boolean validate)
void	propertiesChanged(java.lang.Object object, java.util.Map properties)
void	propertyAdded(JGraphSQLEntity entity, java.lang.Object key, java.lang.Object value)
void	propertyChanged(JGraphSQLEntity entity, java.lang.Object key, java.lang.Object value)
void	query(java.lang.String expression)
void	rollback() Invoked when an exception has been thrown during a non-validating calling sequence on the backend.
void	sourceChanged(JGraphAdapterModel sender, java.lang.Object edge, java.lang.Object source, boolean validate)
void	targetChanged(JGraphAdapterModel sender, java.lang.Object edge, java.lang.Object target, boolean validate)
void	update(java.lang.String expression)
void	vertexAdded(JGraphAdapterModel sender, java.lang.Object vertex, boolean validate) Invoked when a vertex has been added to the sender model.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JGraphSQLBackend

public JGraphSQLBackend(java.sql.Connection conn,
                        java.lang.Object vertexPrototype,
                        java.lang.Object edgePrototype)
                 throws java.lang.ClassNotFoundException,
                        java.sql.SQLException

Throws:

java.lang.ClassNotFoundException

java.sql.SQLException

Method Detail

commit

public void commit()
            throws java.lang.Exception

Description copied from interface: JGraphAdapterBackend

Invoked after no exception has been thrown during a non-validating calling sequence on the backend.

Specified by:

commit in interface JGraphAdapterBackend

Throws:

java.lang.Exception

rollback

public void rollback()
              throws java.lang.Exception

Description copied from interface: JGraphAdapterBackend

Invoked when an exception has been thrown during a non-validating calling sequence on the backend.

Specified by:

rollback in interface JGraphAdapterBackend

Throws:

java.lang.Exception

vertexAdded

public void vertexAdded(JGraphAdapterModel sender,
                        java.lang.Object vertex,
                        boolean validate)
                 throws java.lang.Exception

Description copied from interface: JGraphAdapterBackend

Invoked when a vertex has been added to the sender model. If validate is true then the change should not be performed yet. If the validation or the actual change fail on the backend, you should throw an exception.

Specified by:

vertexAdded in interface JGraphAdapterBackend

Throws:

java.lang.Exception

edgeAdded

public void edgeAdded(JGraphAdapterModel sender,
                      java.lang.Object object,
                      java.lang.Object source,
                      java.lang.Object target,
                      boolean validate)
               throws java.lang.Exception

Specified by:

edgeAdded in interface JGraphAdapterBackend

Throws:

java.lang.Exception

cellRemoved

public void cellRemoved(JGraphAdapterModel sender,
                        java.lang.Object cell,
                        boolean validate)
                 throws java.lang.Exception

Specified by:

cellRemoved in interface JGraphAdapterBackend

Throws:

java.lang.Exception

parentChanged

public void parentChanged(JGraphAdapterModel sender,
                          java.lang.Object child,
                          java.lang.Object parent,
                          boolean validate)
                   throws java.lang.Exception

Specified by:

parentChanged in interface JGraphAdapterBackend

Throws:

java.lang.Exception

sourceChanged

public void sourceChanged(JGraphAdapterModel sender,
                          java.lang.Object edge,
                          java.lang.Object source,
                          boolean validate)
                   throws java.lang.Exception

Specified by:

sourceChanged in interface JGraphAdapterBackend

Throws:

java.lang.Exception

targetChanged

public void targetChanged(JGraphAdapterModel sender,
                          java.lang.Object edge,
                          java.lang.Object target,
                          boolean validate)
                   throws java.lang.Exception

Specified by:

targetChanged in interface JGraphAdapterBackend

Throws:

java.lang.Exception

attributesChanged

public void attributesChanged(JGraphAdapterModel sender,
                              java.lang.Object cell,
                              java.util.Map attributes,
                              boolean validate)
                       throws java.lang.Exception

Specified by:

attributesChanged in interface JGraphAdapterBackend

Throws:

java.lang.Exception

propertiesChanged

public void propertiesChanged(java.lang.Object object,
                              java.util.Map properties)
                       throws java.lang.Exception

Throws:

java.lang.Exception

propertyChanged

public void propertyChanged(JGraphSQLEntity entity,
                            java.lang.Object key,
                            java.lang.Object value)
                     throws java.lang.Exception

Throws:

java.lang.Exception

propertyAdded

public void propertyAdded(JGraphSQLEntity entity,
                          java.lang.Object key,
                          java.lang.Object value)
                   throws java.lang.Exception

Throws:

java.lang.Exception

findVertices

public java.util.Collection findVertices(JGraphAdapterModel sender,
                                         java.lang.Object query,
                                         java.lang.Object parent)
                                  throws java.sql.SQLException

Throws:

java.sql.SQLException

getParent

public java.lang.Object getParent(java.lang.Object object)

getSource

public java.lang.Object getSource(java.lang.Object object)

getTarget

public java.lang.Object getTarget(java.lang.Object object)

createCell

public java.lang.Object createCell(JGraphAdapterModel context,
                                   JGraphSQLEntity entity)
                            throws java.sql.SQLException

Throws:

java.sql.SQLException

findEdges

public java.util.Collection findEdges(JGraphAdapterModel sender,
                                      java.lang.Object query,
                                      java.lang.Object parent,
                                      java.lang.Object source,
                                      java.lang.Object target,
                                      boolean directed)
                               throws java.sql.SQLException

Throws:

java.sql.SQLException

get

public JGraphSQLEntity get(java.lang.Object id)
                    throws java.sql.SQLException

Throws:

java.sql.SQLException

query

public void query(java.lang.String expression)
           throws java.sql.SQLException

Throws:

java.sql.SQLException

dump

public void dump(java.sql.ResultSet rs)
          throws java.sql.SQLException

Throws:

java.sql.SQLException

update

public void update(java.lang.String expression)
            throws java.sql.SQLException

Throws:

java.sql.SQLException