Package de.aristaflow.adept2.core.changeoperations

Class DeleteDataElement

java.lang.Object

de.aristaflow.adept2.core.changeoperations.DeleteDataElement

public class DeleteDataElement
extends Object

ChangeOperation to delete a data element (including its in- and outgoing data edges). Call isPossible first to check if the deletion is valid, than call perform operation to execute the change TODO use the updateManager to update the graphical representation (at the moment the data elements are updated implicitly by the EndTransaction operation)

Field Summary

Fields

Modifier and Type	Field	Description
protected static final Logger	logger	a Logger

Constructor Summary

Constructors

Constructor	Description
DeleteDataElement()

Method Summary

Modifier and Type	Method	Description
static boolean	isPossible(ChangeableInstance instance, DataElement dataElement)	checks if it is valid (concerning structural and state-based correctness) to delete the given data element from the instance
static boolean	isPossible(ChangeableInstance instance, DataElement dataElement, CheckReport checkReport)	checks if it is valid (concerning structural and state based correctness) to delete the given data element from the instance If not, the reasons are stored in the check report.
static boolean	isPossible(Template template, DataElement dataElement)	checks if it is valid (concerning structural correctness) to delete the given data element from the template
static boolean	isPossible(Template template, DataElement dataElement, CheckReport checkReport)	Checks if it is valid (concerning structural correctness) to delete the given data element from the template.
static void	performOperation(SessionToken session, ChangeableInstance instance, DataElement dataElement)	Deletes the given data element from the instance.
static void	performOperation(SessionToken session, ChangeableInstance instance, DataElement dataElement, UpdateManager updateManager)	Deletes the given data element from the instance Possibly assigned in- or outgoing data edges are also deleted.
static void	performOperation(SessionToken session, ChangeableTemplate template, DataElement dataElement)	Deletes the given data element from the template.
static void	performOperation(SessionToken session, ChangeableTemplate template, DataElement dataElement, UpdateManager updateManager)	Deletes the given data element from the template Possibly assigned in- or outgoing data edges are also deleted.
protected static void	performOperation(SessionToken session, ChangePrimitives processGraph, DataElement dataElement, UpdateManager updateManager)	Worker method to do the structural changes for both changeable templates and changeable instances.

Methods inherited from class java.lang.Object

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

Field Details

logger

protected static final Logger logger

a Logger

Constructor Details

DeleteDataElement

public DeleteDataElement()

Method Details

isPossible

public static boolean isPossible(Template template,
 DataElement dataElement)

checks if it is valid (concerning structural correctness) to delete the given data element from the template

Parameters:

template - the template where the data element should be deleted

dataElement - the data element which should be deleted

Returns:

True, if the deletion is valid

isPossible

public static boolean isPossible(Template template,
 DataElement dataElement,
 CheckReport checkReport)

Checks if it is valid (concerning structural correctness) to delete the given data element from the template. If not, the reasons are stored in the check report.

Parameters:

template - the template where the data element should be deleted

dataElement - the data element which should be deleted

checkReport - a checkReport object which can be filled with the reason why the isPossible failed (i.e. in the case the method returns false), may be null

Returns:

True, if the deletion is valid

isPossible

public static boolean isPossible(ChangeableInstance instance,
 DataElement dataElement)

checks if it is valid (concerning structural and state-based correctness) to delete the given data element from the instance

Parameters:

instance - the changeable instance where the data element should be deleted

dataElement - the data element which should be deleted

Returns:

True, if the deletion is valid

isPossible

public static boolean isPossible(ChangeableInstance instance,
 DataElement dataElement,
 CheckReport checkReport)

checks if it is valid (concerning structural and state based correctness) to delete the given data element from the instance If not, the reasons are stored in the check report.

Parameters:

instance - the changeable instance where the data element should be deleted

dataElement - the data element which should be deleted

checkReport - a checkReport object which can be filled with the reason why the isPossible failed (i.e. in the case the method returns false), may be null

Returns:

True, if the deletion is valid

performOperation

public static void performOperation(SessionToken session,
 ChangeableTemplate template,
 DataElement dataElement)

Deletes the given data element from the template. Possibly assigned in- or outgoing data edges are also deleted.

Parameters:

session - The session which is used to check for access rights on this method.

template - the template where the change is performed on

dataElement - the data element which is to be deleted

performOperation

public static void performOperation(SessionToken session,
 ChangeableTemplate template,
 DataElement dataElement,
 UpdateManager updateManager)

Deletes the given data element from the template Possibly assigned in- or outgoing data edges are also deleted. (with updateManager).

Parameters:

session - The session which is used to check for access rights on this method.

template - the template where the change is performed on

dataElement - the data element which is to be deleted

updateManager - the manager which is responsible for the graphical adaptation of the template (maybe null)

performOperation

public static void performOperation(SessionToken session,
 ChangeableInstance instance,
 DataElement dataElement)

Deletes the given data element from the instance. Possibly assigned in- or outgoing data edges are also deleted.

Parameters:

session - The session which is used to check for access rights on this method.

instance - the changeable instance where the change is performed on

dataElement - the data element which is to be deleted

performOperation

public static void performOperation(SessionToken session,
 ChangeableInstance instance,
 DataElement dataElement,
 UpdateManager updateManager)

Deletes the given data element from the instance Possibly assigned in- or outgoing data edges are also deleted. (with updateManager).

Parameters:

session - The session which is used to check for access rights on this method.

instance - the changeable instance where the change is performed on

dataElement - the data element which is to be deleted

updateManager - the manager which is responsible for the graphical adaptation of the template (maybe null)

performOperation

protected static void performOperation(SessionToken session,
 ChangePrimitives processGraph,
 DataElement dataElement,
 UpdateManager updateManager)

Worker method to do the structural changes for both changeable templates and changeable instances.

Parameters:

session - The session which is used to check for access rights on this method.

processGraph - an instance of type ChangeableTemplate or ChangeableInstance

dataElement - the data element which is to be deleted

updateManager - the manager which is responsible for the graphical adaptation of the template (maybe null)