org.aspectj.org.eclipse.jdt.internal.core
Class JavaModel

java.lang.Object
  PlatformObject
      org.aspectj.org.eclipse.jdt.internal.core.JavaElement
          org.aspectj.org.eclipse.jdt.internal.core.Openable
              org.aspectj.org.eclipse.jdt.internal.core.JavaModel

All Implemented Interfaces:

IBufferChangedListener, IJavaElement, IJavaModel, IOpenable, IParent

public class JavaModel
extends Openable
implements IJavaModel

Implementation of IJavaModel. The Java Model maintains a cache of active IJavaProjects in a workspace. A Java Model is specific to a workspace. To retrieve a workspace's model, use the #getJavaModel(IWorkspace) method.

See Also:

IJavaModel

Field Summary

static java.util.HashSet	existingExternalConfirmedFiles A set of external files (existingExternalFiles) which have been confirmed as file (ie.
static java.util.HashSet	existingExternalFiles A set of java.io.Files used as a cache of external jars that are known to be existing.

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

JEM_CLASSFILE, JEM_COMPILATIONUNIT, JEM_COUNT, JEM_ESCAPE, JEM_FIELD, JEM_IMPORTDECLARATION, JEM_INITIALIZER, JEM_JAVAPROJECT, JEM_LOCALVARIABLE, JEM_METHOD, JEM_PACKAGEDECLARATION, JEM_PACKAGEFRAGMENT, JEM_PACKAGEFRAGMENTROOT, JEM_TYPE, JEM_TYPE_PARAMETER, NO_ELEMENTS, NO_INFO, parent

Fields inherited from interface org.aspectj.org.eclipse.jdt.core.IJavaElement

CLASS_FILE, COMPILATION_UNIT, FIELD, IMPORT_CONTAINER, IMPORT_DECLARATION, INITIALIZER, JAVA_MODEL, JAVA_PROJECT, LOCAL_VARIABLE, METHOD, PACKAGE_DECLARATION, PACKAGE_FRAGMENT, PACKAGE_FRAGMENT_ROOT, TYPE, TYPE_PARAMETER

Constructor Summary

protected

JavaModel() Constructs a new Java Model on the given workspace.

Method Summary

protected boolean	buildStructure(OpenableElementInfo info, IProgressMonitor pm, java.util.Map newElements, IResource underlyingResource) Builds this element's structure and properties in the given info object, based on this element's current contents (reuse buffer contents if this element has an open buffer, or resource contents if this element does not have an open buffer).
boolean	contains(IResource resource) Returns whether this Java model contains an IJavaElement whose resource is the given resource or a non-Java resource which is the given resource.
void	copy(IJavaElement[] elements, IJavaElement[] containers, IJavaElement[] siblings, java.lang.String[] renamings, boolean force, IProgressMonitor monitor) Copies the given elements to the specified container(s).
protected java.lang.Object	createElementInfo() Returns a new element info for this element.
void	delete(IJavaElement[] elements, boolean force, IProgressMonitor monitor) Deletes the given elements, forcing the operation if necessary and specified.
boolean	equals(java.lang.Object o) Returns true if this handle represents the same Java element as the given handle.
static void	flushExternalFileCache() Flushes the cache of external files known to be existing.
int	getElementType() Returns this element's kind encoded as an integer.
static java.io.File	getFile(java.lang.Object target) Helper method - returns the file item (ie.
IJavaElement	getHandleFromMemento(java.lang.String token, MementoTokenizer memento, WorkingCopyOwner owner)
protected void	getHandleMemento(java.lang.StringBuffer buff)
protected char	getHandleMementoDelimiter() Returns the char that marks the start of this handles contribution to a memento.
IJavaProject	getJavaProject(IResource resource) Returns the active Java project associated with the specified resource, or null if no Java project yet exists for the resource.
IJavaProject	getJavaProject(java.lang.String projectName) Returns the Java project with the given name.
IJavaProject[]	getJavaProjects() Returns the Java projects in this Java model, or an empty array if there are none.
java.lang.Object[]	getNonJavaResources() Returns an array of non-Java resources (that is, non-Java projects) in the workspace.
IPath	getPath() Returns the path to the innermost resource enclosing this element.
IResource	getResource() Returns the innermost resource enclosing this element.
static java.lang.Object	getTarget(IContainer container, IPath path, boolean checkResourceExistence) Helper method - returns the targeted item (IResource if internal or java.io.File if external), or null if unbound Internal items must be referred to using container relative paths.
IResource	getUnderlyingResource() Returns the smallest underlying resource that contains this element, or null if this element is not contained in a resource.
IWorkspace	getWorkspace() Returns the workbench associated with this object.
static boolean	isFile(java.lang.Object target) Helper method - returns whether an object is afile (ie.
void	move(IJavaElement[] elements, IJavaElement[] containers, IJavaElement[] siblings, java.lang.String[] renamings, boolean force, IProgressMonitor monitor) Moves the given elements to the specified container(s).
void	refreshExternalArchives(IJavaElement[] elementsScope, IProgressMonitor monitor) Triggers an update of the JavaModel with respect to the referenced external archives.
void	rename(IJavaElement[] elements, IJavaElement[] destinations, java.lang.String[] renamings, boolean force, IProgressMonitor monitor) Renames the given elements as specified.
protected void	runOperation(MultiOperation op, IJavaElement[] elements, IJavaElement[] siblings, java.lang.String[] renamings, IProgressMonitor monitor) Configures and runs the MultiOperation.
protected void	toStringInfo(int tab, java.lang.StringBuffer buffer, java.lang.Object info, boolean showResolvedInfo) Debugging purposes

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

bufferChanged, canBeRemovedFromCache, canBufferBeRemovedFromCache, closeBuffer, closing, codeComplete, codeSelect, exists, findRecommendedLineSeparator, generateInfos, getBuffer, getBufferFactory, getBufferManager, getCorrespondingResource, getOpenable, getPackageFragmentRoot, hasBuffer, hasUnsavedChanges, isConsistent, isOpen, isSourceElement, isStructureKnown, makeConsistent, open, openBuffer, openParent, parentExists, resourceExists, save

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

close, escapeMementoName, findNode, getAncestor, getAttachedJavadoc, getChildren, getChildrenOfType, getClassFile, getCompilationUnit, getElementInfo, getElementInfo, getElementName, getHandleFromMemento, getHandleIdentifier, getHandleMemento, getJavadocBaseLocation, getJavaModel, getJavaProject, getLibraryJavadocLocation, getOpenableParent, getParent, getPrimaryElement, getPrimaryElement, getSchedulingRule, getSourceElementAt, getSourceMapper, getURLContents, hasChildren, hashCode, isAncestorOf, isReadOnly, newJavaModelException, newNotPresentException, openWhenClosed, readableName, resolved, tabString, toDebugString, toString, toString, toStringAncestors, toStringChildren, toStringInfo, toStringName, toStringWithAncestors, toStringWithAncestors, unresolved

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.aspectj.org.eclipse.jdt.core.IJavaElement

exists, getAncestor, getAttachedJavadoc, getCorrespondingResource, getElementName, getHandleIdentifier, getJavaModel, getJavaProject, getOpenable, getParent, getPrimaryElement, getSchedulingRule, isReadOnly, isStructureKnown

Methods inherited from interface org.aspectj.org.eclipse.jdt.core.IOpenable

close, findRecommendedLineSeparator, getBuffer, hasUnsavedChanges, isConsistent, isOpen, makeConsistent, open, save

Methods inherited from interface org.aspectj.org.eclipse.jdt.core.IParent

getChildren, hasChildren

Field Detail

existingExternalFiles

public static java.util.HashSet existingExternalFiles

A set of java.io.Files used as a cache of external jars that are known to be existing. Note this cache is kept for the whole session.

existingExternalConfirmedFiles

public static java.util.HashSet existingExternalConfirmedFiles

A set of external files (existingExternalFiles) which have been confirmed as file (ie. which returns true to File.isFile(). Note this cache is kept for the whole session.

Constructor Detail

JavaModel

protected JavaModel()
             throws java.lang.Error

Constructs a new Java Model on the given workspace. Note that only one instance of JavaModel handle should ever be created. One should only indirect through JavaModelManager#getJavaModel() to get access to it.

Throws:

java.lang.Error - if called more than once

Method Detail

buildStructure

protected boolean buildStructure(OpenableElementInfo info,
                                 IProgressMonitor pm,
                                 java.util.Map newElements,
                                 IResource underlyingResource)

Description copied from class: Openable

Builds this element's structure and properties in the given info object, based on this element's current contents (reuse buffer contents if this element has an open buffer, or resource contents if this element does not have an open buffer). Children are placed in the given newElements table (note, this element has already been placed in the newElements table). Returns true if successful, or false if an error is encountered while determining the structure of this element.

Specified by:

buildStructure in class Openable

contains

public boolean contains(IResource resource)

Description copied from interface: IJavaModel

Returns whether this Java model contains an IJavaElement whose resource is the given resource or a non-Java resource which is the given resource.

Note: no existency check is performed on the argument resource. If it is not accessible (see IResource.isAccessible()) yet but would be located in Java model range, then it will return true.

If the resource is accessible, it can be reached by navigating the Java model down using the getChildren() and/or getNonJavaResources() methods.

Specified by:

contains in interface IJavaModel

Parameters:

resource - the resource to check

Returns:

true if the resource is accessible through the Java model

copy

public void copy(IJavaElement[] elements,
                 IJavaElement[] containers,
                 IJavaElement[] siblings,
                 java.lang.String[] renamings,
                 boolean force,
                 IProgressMonitor monitor)
          throws JavaModelException

Description copied from interface: IJavaModel

Copies the given elements to the specified container(s). If one container is specified, all elements are copied to that container. If more than one container is specified, the number of elements and containers must match, and each element is copied to its associated container.

Optionally, each copy can positioned before a sibling element. If null is specified for a given sibling, the copy is inserted as the last child of its associated container.

Optionally, each copy can be renamed. If null is specified for the new name, the copy is not renamed.

Optionally, any existing child in the destination container with the same name can be replaced by specifying true for force. Otherwise an exception is thrown in the event that a name collision occurs.

Specified by:

copy in interface IJavaModel

Parameters:

elements - the elements to copy

containers - the container, or list of containers

siblings - the list of siblings element any of which may be null; or null

renamings - the list of new names any of which may be null; or null

force - true if any existing child in a target container with the target name should be replaced, and false to throw an exception in the event of a name collision

monitor - a progress monitor

Throws:

JavaModelException - if an element could not be copied. Reasons include:

• There is no element to process (NO_ELEMENTS_TO_PROCESS). The given elements is null or empty
• A specified element, container, or sibling does not exist (ELEMENT_DOES_NOT_EXIST)
• A CoreException occurred while updating an underlying resource
• A container is of an incompatible type (INVALID_DESTINATION)
• A sibling is not a child of it associated container (INVALID_SIBLING)
• A new name is invalid (INVALID_NAME)
• A child in its associated container already exists with the same name and replace has been specified as false (NAME_COLLISION)
• A container or element is read-only (READ_ONLY)

See Also:

IJavaModel

createElementInfo

protected java.lang.Object createElementInfo()

Returns a new element info for this element.

Overrides:

createElementInfo in class Openable

delete

public void delete(IJavaElement[] elements,
                   boolean force,
                   IProgressMonitor monitor)
            throws JavaModelException

Description copied from interface: IJavaModel

Deletes the given elements, forcing the operation if necessary and specified.

Specified by:

delete in interface IJavaModel

Parameters:

elements - the elements to delete

force - a flag controlling whether underlying resources that are not in sync with the local file system will be tolerated

monitor - a progress monitor

Throws:

JavaModelException - if an element could not be deleted. Reasons include:

• There is no element to process (NO_ELEMENTS_TO_PROCESS). The given elements is null or empty
• A specified element does not exist (ELEMENT_DOES_NOT_EXIST)
• A CoreException occurred while updating an underlying resource
• An element is read-only (READ_ONLY)

See Also:

IJavaModel

equals

public boolean equals(java.lang.Object o)

Description copied from class: JavaElement

Returns true if this handle represents the same Java element as the given handle. By default, two handles represent the same element if they are identical or if they represent the same type of element, have equal names, parents, and occurrence counts.

If a subclass has other requirements for equality, this method must be overridden.

Overrides:

equals in class JavaElement

See Also:

Object.equals(java.lang.Object)

getElementType

public int getElementType()

Description copied from interface: IJavaElement

Returns this element's kind encoded as an integer. This is a handle-only method.

Specified by:

getElementType in interface IJavaElement

Returns:

the kind of element; one of the constants declared in IJavaElement

See Also:

IJavaElement

flushExternalFileCache

public static void flushExternalFileCache()

Flushes the cache of external files known to be existing.

getHandleFromMemento

public IJavaElement getHandleFromMemento(java.lang.String token,
                                         MementoTokenizer memento,
                                         WorkingCopyOwner owner)

Specified by:

getHandleFromMemento in class JavaElement

getHandleMemento

protected void getHandleMemento(java.lang.StringBuffer buff)

Overrides:

getHandleMemento in class JavaElement

See Also:

JavaElement.getHandleMemento(StringBuffer)

getHandleMementoDelimiter

protected char getHandleMementoDelimiter()

Returns the char that marks the start of this handles contribution to a memento.

Specified by:

getHandleMementoDelimiter in class JavaElement

getJavaProject

public IJavaProject getJavaProject(java.lang.String projectName)

Description copied from interface: IJavaModel

Returns the Java project with the given name. This is a handle-only method. The project may or may not exist.

Specified by:

getJavaProject in interface IJavaModel

Parameters:

projectName - the name of the Java project

Returns:

the Java project with the given name

See Also:

IJavaModel

getJavaProject

public IJavaProject getJavaProject(IResource resource)

Returns the active Java project associated with the specified resource, or null if no Java project yet exists for the resource.

Specified by:

getJavaProject in interface IJavaModel

Parameters:

resource - the name of the Java project

Returns:

the Java project with the given name

Throws:

java.lang.IllegalArgumentException - if the given resource is not one of an IProject, IFolder, or IFile.

getJavaProjects

public IJavaProject[] getJavaProjects()
                               throws JavaModelException

Description copied from interface: IJavaModel

Returns the Java projects in this Java model, or an empty array if there are none.

Specified by:

getJavaProjects in interface IJavaModel

Returns:

the Java projects in this Java model, or an empty array if there are none

Throws:

JavaModelException - if this request fails.

See Also:

IJavaModel

getNonJavaResources

public java.lang.Object[] getNonJavaResources()
                                       throws JavaModelException

Description copied from interface: IJavaModel

Returns an array of non-Java resources (that is, non-Java projects) in the workspace.

Non-Java projects include all projects that are closed (even if they have the Java nature).

Specified by:

getNonJavaResources in interface IJavaModel

Returns:

an array of non-Java projects (IProjects) contained in the workspace.

Throws:

JavaModelException - if this element does not exist or if an exception occurs while accessing its corresponding resource

See Also:

IJavaModel

getPath

public IPath getPath()

Description copied from interface: IJavaElement

Returns the path to the innermost resource enclosing this element. If this element is not included in an external archive, the path returned is the full, absolute path to the underlying resource, relative to the workbench. If this element is included in an external archive, the path returned is the absolute path to the archive in the file system. This is a handle-only method.

Specified by:

getPath in interface IJavaElement

Returns:

the path to the innermost resource enclosing this element

getResource

public IResource getResource()

Description copied from interface: IJavaElement

Returns the innermost resource enclosing this element. If this element is included in an archive and this archive is not external, this is the underlying resource corresponding to the archive. If this element is included in an external archive, null is returned. This is a handle-only method.

Specified by:

getResource in interface IJavaElement

Returns:

the innermost resource enclosing this element, null if this element is included in an external archive

getUnderlyingResource

public IResource getUnderlyingResource()

Description copied from interface: IJavaElement

Returns the smallest underlying resource that contains this element, or null if this element is not contained in a resource.

Specified by:

getUnderlyingResource in interface IJavaElement

Overrides:

getUnderlyingResource in class Openable

Returns:

the underlying resource, or null if none

See Also:

IOpenable

getWorkspace

public IWorkspace getWorkspace()

Returns the workbench associated with this object.

Specified by:

getWorkspace in interface IJavaModel

Returns:

the workspace associated with this Java model

move

public void move(IJavaElement[] elements,
                 IJavaElement[] containers,
                 IJavaElement[] siblings,
                 java.lang.String[] renamings,
                 boolean force,
                 IProgressMonitor monitor)
          throws JavaModelException

Description copied from interface: IJavaModel

Moves the given elements to the specified container(s). If one container is specified, all elements are moved to that container. If more than one container is specified, the number of elements and containers must match, and each element is moved to its associated container.

Optionally, each element can positioned before a sibling element. If null is specified for sibling, the element is inserted as the last child of its associated container.

Optionally, each element can be renamed. If null is specified for the new name, the element is not renamed.

Optionally, any existing child in the destination container with the same name can be replaced by specifying true for force. Otherwise an exception is thrown in the event that a name collision occurs.

Specified by:

move in interface IJavaModel

Parameters:

elements - the elements to move

containers - the container, or list of containers

siblings - the list of siblings element any of which may be null; or null

renamings - the list of new names any of which may be null; or null

force - true if any existing child in a target container with the target name should be replaced, and false to throw an exception in the event of a name collision

monitor - a progress monitor

Throws:

JavaModelException - if an element could not be moved. Reasons include:

• There is no element to process (NO_ELEMENTS_TO_PROCESS). The given elements is null or empty
• A specified element, container, or sibling does not exist (ELEMENT_DOES_NOT_EXIST)
• A CoreException occurred while updating an underlying resource
• A container is of an incompatible type (INVALID_DESTINATION)
• A sibling is not a child of it associated container (INVALID_SIBLING)
• A new name is invalid (INVALID_NAME)
• A child in its associated container already exists with the same name and replace has been specified as false (NAME_COLLISION)
• A container or element is read-only (READ_ONLY)

See Also:

IJavaModel

refreshExternalArchives

public void refreshExternalArchives(IJavaElement[] elementsScope,
                                    IProgressMonitor monitor)
                             throws JavaModelException

Description copied from interface: IJavaModel

Triggers an update of the JavaModel with respect to the referenced external archives. This operation will issue a JavaModel delta describing the discovered changes, in term of Java element package fragment roots added, removed or changed. Note that a collection of elements can be passed so as to narrow the set of archives to refresh (passing null along is equivalent to refreshing the entire mode). The elements can be:

• package fragment roots corresponding to external archives
• Java projects, which referenced external archives will be refreshed
• Java model, all referenced external archives will be refreshed.

In case an archive is used by multiple projects, the delta issued will account for all of them. This means that even if a project was not part of the elements scope, it may still be notified of changes if it is referencing a library comprised in the scope.

Specified by:

refreshExternalArchives in interface IJavaModel

Parameters:

elementsScope - - a collection of elements defining the scope of the refresh

monitor - - a progress monitor used to report progress

Throws:

JavaModelException - in one of the corresponding situation:

• an exception occurs while accessing project resources

See Also:

IJavaModel.refreshExternalArchives(IJavaElement[], IProgressMonitor)

rename

public void rename(IJavaElement[] elements,
                   IJavaElement[] destinations,
                   java.lang.String[] renamings,
                   boolean force,
                   IProgressMonitor monitor)
            throws JavaModelException

Description copied from interface: IJavaModel

Renames the given elements as specified. If one container is specified, all elements are renamed within that container. If more than one container is specified, the number of elements and containers must match, and each element is renamed within its associated container.

Specified by:

rename in interface IJavaModel

Parameters:

elements - the elements to rename

destinations - the container, or list of containers

renamings - the list of new names

force - true if an existing child in a target container with the target name should be replaced, and false to throw an exception in the event of a name collision

monitor - a progress monitor

Throws:

JavaModelException - if an element could not be renamed. Reasons include:

• There is no element to process (NO_ELEMENTS_TO_PROCESS). The given elements is null or empty
• A specified element does not exist (ELEMENT_DOES_NOT_EXIST)
• A CoreException occurred while updating an underlying resource
• A new name is invalid (INVALID_NAME)
• A child already exists with the same name and replace has been specified as false (NAME_COLLISION)
• An element is read-only (READ_ONLY)

See Also:

IJavaModel

runOperation

protected void runOperation(MultiOperation op,
                            IJavaElement[] elements,
                            IJavaElement[] siblings,
                            java.lang.String[] renamings,
                            IProgressMonitor monitor)
                     throws JavaModelException

Configures and runs the MultiOperation.

Throws:

JavaModelException

toStringInfo

protected void toStringInfo(int tab,
                            java.lang.StringBuffer buffer,
                            java.lang.Object info,
                            boolean showResolvedInfo)

Description copied from class: JavaElement

Debugging purposes

Overrides:

toStringInfo in class JavaElement

showResolvedInfo - TODO

getTarget

public static java.lang.Object getTarget(IContainer container,
                                         IPath path,
                                         boolean checkResourceExistence)

Helper method - returns the targeted item (IResource if internal or java.io.File if external), or null if unbound Internal items must be referred to using container relative paths.

isFile

public static boolean isFile(java.lang.Object target)

Helper method - returns whether an object is afile (ie. which returns true to File.isFile().

getFile

public static java.io.File getFile(java.lang.Object target)

Helper method - returns the file item (ie. which returns true to File.isFile(), or null if unbound