org.eclipse.jdt.core
Interface IJavaModel

All Superinterfaces:

org.eclipse.core.runtime.IAdaptable, IJavaElement, IOpenable, IParent

All Known Implementing Classes:

JavaModel

public interface IJavaModel
extends IJavaElement, IOpenable, IParent

Represent the root Java element corresponding to the workspace. Since there is only one such root element, it is commonly referred to as the Java model element. The Java model element needs to be opened before it can be navigated or manipulated. The Java model element has no parent (it is the root of the Java element hierarchy). Its children are IJavaProjects.

This interface provides methods for performing copy, move, rename, and delete operations on multiple Java elements.

An instance of one of these handles can be created via JavaCore.create(workspace.getRoot()).

See Also:

JavaCore.create(org.eclipse.core.resources.IWorkspaceRoot)

Field Summary

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

ANNOTATION, 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

Method Summary

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 replace, org.eclipse.core.runtime.IProgressMonitor monitor) Copies the given elements to the specified container(s).
void	delete(IJavaElement[] elements, boolean force, org.eclipse.core.runtime.IProgressMonitor monitor) Deletes the given elements, forcing the operation if necessary and specified.
IJavaProject	getJavaProject(java.lang.String name) 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.
IWorkspace	getWorkspace() Returns the workspace associated with this Java model.
void	move(IJavaElement[] elements, IJavaElement[] containers, IJavaElement[] siblings, java.lang.String[] renamings, boolean replace, org.eclipse.core.runtime.IProgressMonitor monitor) Moves the given elements to the specified container(s).
void	refreshExternalArchives(IJavaElement[] elementsScope, org.eclipse.core.runtime.IProgressMonitor monitor) Triggers an update of the JavaModel with respect to the referenced external archives.
void	rename(IJavaElement[] elements, IJavaElement[] destinations, java.lang.String[] names, boolean replace, org.eclipse.core.runtime.IProgressMonitor monitor) Renames the given elements as specified.

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

exists, getAncestor, getAttachedJavadoc, getCorrespondingResource, getElementName, getElementType, getHandleIdentifier, getJavaModel, getJavaProject, getOpenable, getParent, getPath, getPrimaryElement, getResource, getSchedulingRule, getUnderlyingResource, isReadOnly, isStructureKnown

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

getAdapter

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

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

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

getChildren, hasChildren

Method Detail

contains

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.

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.

Parameters:

resource - the resource to check

Returns:

true if the resource is accessible through the Java model

Since:

2.1

copy

void copy(IJavaElement[] elements,
          IJavaElement[] containers,
          IJavaElement[] siblings,
          java.lang.String[] renamings,
          boolean replace,
          org.eclipse.core.runtime.IProgressMonitor monitor)
          throws JavaModelException

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.

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

replace - 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)

delete

void delete(IJavaElement[] elements,
            boolean force,
            org.eclipse.core.runtime.IProgressMonitor monitor)
            throws JavaModelException

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

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)

getJavaProject

IJavaProject getJavaProject(java.lang.String name)

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

Parameters:

name - the name of the Java project

Returns:

the Java project with the given name

getJavaProjects

IJavaProject[] getJavaProjects()
                               throws JavaModelException

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

Returns:

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

Throws:

JavaModelException - if this request fails.

getNonJavaResources

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

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).

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

Since:

2.1

getWorkspace

IWorkspace getWorkspace()

Returns the workspace associated with this Java model.

Returns:

the workspace associated with this Java model

move

void move(IJavaElement[] elements,
          IJavaElement[] containers,
          IJavaElement[] siblings,
          java.lang.String[] renamings,
          boolean replace,
          org.eclipse.core.runtime.IProgressMonitor monitor)
          throws JavaModelException

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.

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

replace - 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)

java.lang.IllegalArgumentException - any element or container is null

refreshExternalArchives

void refreshExternalArchives(IJavaElement[] elementsScope,
                             org.eclipse.core.runtime.IProgressMonitor monitor)
                             throws JavaModelException

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.

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

Since:

2.0

See Also:

IJavaElementDelta

rename

void rename(IJavaElement[] elements,
            IJavaElement[] destinations,
            java.lang.String[] names,
            boolean replace,
            org.eclipse.core.runtime.IProgressMonitor monitor)
            throws JavaModelException

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.

Parameters:

elements - the elements to rename

destinations - the container, or list of containers

names - the list of new names

replace - 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)