Package org.aspectj.org.eclipse.jdt.internal.core

Class DeleteElementsOperation

java.lang.Object

org.aspectj.org.eclipse.jdt.internal.core.JavaModelOperation

org.aspectj.org.eclipse.jdt.internal.core.MultiOperation

org.aspectj.org.eclipse.jdt.internal.core.DeleteElementsOperation

All Implemented Interfaces:

org.eclipse.core.resources.IWorkspaceRunnable, org.eclipse.core.runtime.ICoreRunnable, org.eclipse.core.runtime.IProgressMonitor

public class DeleteElementsOperation
extends MultiOperation

This operation deletes a collection of elements (and all of their children). If an element does not exist, it is ignored.

NOTE: This operation only deletes elements contained within leaf resources - that is, elements within compilation units. To delete a compilation unit or a package, etc (which have an actual resource), a DeleteResourcesOperation should be used.

Nested Class Summary

Nested classes/interfaces inherited from class org.aspectj.org.eclipse.jdt.internal.core.JavaModelOperation

JavaModelOperation.IPostAction

Field Summary

Fields

Modifier and Type	Field	Description
protected Map	childrenToRemove	The elements this operation processes grouped by compilation unit
protected ASTParser	parser	The ASTParser used to manipulate the source code of ICompilationUnit.

Fields inherited from class org.aspectj.org.eclipse.jdt.internal.core.MultiOperation

insertBeforeElements, newParents, renamings, renamingsList

Fields inherited from class org.aspectj.org.eclipse.jdt.internal.core.JavaModelOperation

actions, actionsEnd, actionsStart, APPEND, attributes, elementsToProcess, force, HAS_MODIFIED_RESOURCE_ATTR, isNested, KEEP_EXISTING, NO_ELEMENTS, OPERATION_STACKS, parentElements, POST_ACTION_VERBOSE, progressMonitor, REMOVEALL_APPEND, resultElements, TRUE

Fields inherited from interface org.eclipse.core.runtime.IProgressMonitor

UNKNOWN

Constructor Summary

Constructors

Constructor	Description
DeleteElementsOperation(IJavaElement[] elementsToDelete, boolean force)	When executed, this operation will delete the given elements.

Method Summary

Modifier and Type	Method	Description
protected String	getMainTaskName()	Returns the name to be used by the progress monitor.
protected org.eclipse.core.runtime.jobs.ISchedulingRule	getSchedulingRule()
protected void	groupElements()	Groups the elements to be processed by their compilation unit.
protected void	processElement(IJavaElement element)	Deletes this element from its compilation unit.
protected void	processElements()	Processes all the IJavaElements in turn, collecting errors and updating the progress monitor.
protected void	verify(IJavaElement element)	This method is called for each IJavaElement before processElement.

Methods inherited from class org.aspectj.org.eclipse.jdt.internal.core.MultiOperation

error, executeOperation, getDestinationParent, getNewNameFor, isMove, isRename, setInsertBefore, setRenamings, verifyDestination, verifyRenaming, verifySibling

Methods inherited from class org.aspectj.org.eclipse.jdt.internal.core.JavaModelOperation

addAction, addDelta, addReconcileDelta, applyTextEdit, beginTask, canModifyRoots, checkCanceled, commonVerify, copyResources, createFile, createFolder, deleteEmptyPackageFragment, deleteResource, deleteResources, done, equalsOneOf, executeNestedOperation, firstActionWithID, getAttribute, getCompilationUnitFor, getCurrentOperationStack, getDocument, getElementToProcess, getJavaModel, getLatestASTLevel, getNestedFolders, getParentElement, getParentElements, getResultElements, getSubProgressMonitor, hasModifiedResource, internalWorked, isCanceled, isReadOnly, isTopLevelOperation, moveResources, newJavaElementDelta, popOperation, postAction, prefixesOneOf, pushOperation, removeAllPostAction, removeReconcileDelta, run, runOperation, runPostActions, setAttribute, setCanceled, setNested, setTaskName, subTask, verify, worked

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.core.runtime.IProgressMonitor

clearBlocked, setBlocked, slice

Field Details

childrenToRemove

protected Map childrenToRemove

The elements this operation processes grouped by compilation unit

See Also:

• Keys are compilation units, values are IRegions of elements to be processed in each compilation unit.

parser

protected ASTParser parser

The ASTParser used to manipulate the source code of ICompilationUnit.

Constructor Details

DeleteElementsOperation

public DeleteElementsOperation(IJavaElement[] elementsToDelete,
 boolean force)

When executed, this operation will delete the given elements. The elements to delete cannot be null or empty, and must be contained within a compilation unit.

Method Details

getMainTaskName

protected String getMainTaskName()

Description copied from class: MultiOperation

Returns the name to be used by the progress monitor.

Specified by:

getMainTaskName in class MultiOperation

See Also:

• MultiOperation

getSchedulingRule

protected org.eclipse.core.runtime.jobs.ISchedulingRule getSchedulingRule()

Overrides:

getSchedulingRule in class JavaModelOperation

groupElements

protected void groupElements()
                      throws JavaModelException

Groups the elements to be processed by their compilation unit. If parent/child combinations are present, children are discarded (only the parents are processed). Removes any duplicates specified in elements to be processed.

Throws:

JavaModelException

processElement

protected void processElement(IJavaElement element)
                       throws JavaModelException

Deletes this element from its compilation unit.

Specified by:

processElement in class MultiOperation

Throws:

JavaModelException

See Also:

• MultiOperation

processElements

protected void processElements()
                        throws JavaModelException

Description copied from class: MultiOperation

Processes all the IJavaElements in turn, collecting errors and updating the progress monitor.

Overrides:

processElements in class MultiOperation

Throws:

JavaModelException - if one or several operation(s) was unable to be completed.

See Also:

• This method first group the elements by ICompilationUnit, and then processes the ICompilationUnit.

verify

protected void verify(IJavaElement element)
               throws JavaModelException

Description copied from class: MultiOperation

This method is called for each IJavaElement before processElement. It should check that this element can be processed.

Specified by:

verify in class MultiOperation

Throws:

JavaModelException

See Also:

• MultiOperation