it.unimi.dico.islab.idbs2.cloud.session

Class CloudNodeManager

java.lang.Object

it.unimi.dico.islab.idbs2.cloud.session.CloudNodeManager

public class CloudNodeManager
extends Object

Manages object saving and querying for CloudNode wrapper. This class contains most used interrogations and methods for saving an object of CloudNode class.

IMPORTANT: this class has no public constructor. A singleton instance of this class is contained in CloudSessionManager class

Author:

Vegeziel

Method Summary

Methods

Modifier and Type	Method and Description
protected static CloudNodeManager	getCloudNodeManager()
CloudNode	getNodeById(Integer id)
Boolean	removeNode(CloudNode cn) Removes the CloudNode given as argument from the current cloud.
Boolean	removeNodeById(Integer id) Removes the CloudNode having id as identifier.
void	save(CloudNode node) Give persistence to the given CloudNode object using associated Hibernate mappings.

Methods inherited from class java.lang.Object

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

Method Detail

getCloudNodeManager

protected static CloudNodeManager getCloudNodeManager()

getNodeById

public CloudNode getNodeById(Integer id)

removeNodeById

public Boolean removeNodeById(Integer id)

Removes the CloudNode having id as identifier.

Parameters:

id - the identifier of the node to be removed

Returns:

• true: if the node has been succesfully removed
• false: if any problem interrupts the deletion process

removeNode

public Boolean removeNode(CloudNode cn)

Removes the CloudNode given as argument from the current cloud.

Parameters:

cn - the CloudNode wrapper of the node to be removed

Returns:

• true: if the node has been succesfully removed
• false: if any problem interrupts the deletion process

See Also:

removeNodeById(Integer)

save

public void save(CloudNode node)

Give persistence to the given CloudNode object using associated Hibernate mappings.

This method executes the saveOrUpdate method of the Hibernate Session. Every CloudNode object is saved in cascade mode by default when saving the owner Cloud object: invoking this method directly will save this object, its parameters, types and keywords; no action will be performed for other connected objects.