Package io.opencaesar.oml.util

Class OmlDelete

java.lang.Object

io.opencaesar.oml.util.OmlDelete

public class OmlDelete
extends Object

Utilities to help delete Oml elements

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	OmlDelete.CascadeDirection	The enumeration of Cascade direction
static class	OmlDelete.CascadeResult	A node in the cascade result tree
static class	OmlDelete.CascadeRule	A cascade delete rule a) If direction is SOURCE_TO_TARGET, and the instance to be deleted matches the given source type, the instance to be deleted is related to a target instance with the given relation, the target instance matches the given target type, delete the target instance; a) If direction is TARGET_TO_SOURCE, and the instance to be deleted matches the given target type, the instance to be deleted is related to a source instance with the given relation, the source instance matches the given source type, delete the source instance;

Constructor Summary

Constructors

Constructor	Description
OmlDelete()

Method Summary

Modifier and Type	Method	Description
static OmlDelete.CascadeResult	cascadeDelete(NamedInstance instance, List<OmlDelete.CascadeRule> cascadeRules)	Determines all the elements that need to be deleted given an instance and a list of cascade rules The elements are returned in a tree of cascade results specifying which elements are to be deleted based on which of the cascade rules.
static void	delete(Element element)	Deletes the given element only
static void	recursiveDelete(Element element)	Deletes the given element and recursively all its referencing elements
static void	recursiveDelete(OmlDelete.CascadeResult rootResult)	Deletes the given cascade result recursively

Methods inherited from class java.lang.Object

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

Constructor Details

OmlDelete

public OmlDelete()

Method Details

delete

public static void delete(Element element)

Deletes the given element only

Parameters:

element - the given element to delete

recursiveDelete

public static void recursiveDelete(Element element)

Deletes the given element and recursively all its referencing elements

Parameters:

element - the given element to delete

cascadeDelete

public static OmlDelete.CascadeResult cascadeDelete(NamedInstance instance,
 List<OmlDelete.CascadeRule> cascadeRules)

Determines all the elements that need to be deleted given an instance and a list of cascade rules The elements are returned in a tree of cascade results specifying which elements are to be deleted based on which of the cascade rules. This can be used in the UI to show the user the impact of deleting the element. This function does not actually delete the elements. To do that, subsequently call recursiveDelete(CascadeResult) passing it the returned cascade result.

Parameters:

instance - The given instance to delete

cascadeRules - A list of cascade rules

Returns:

A root of a tree of cascade results

recursiveDelete

public static void recursiveDelete(OmlDelete.CascadeResult rootResult)

Deletes the given cascade result recursively

Parameters:

rootResult - the given cascade rule to delete