/*******************************************************************************
* Copyright (c) 2000, 2011 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.core;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
/**
* Represent the root Java element corresponding to the workspace.
* Since there is only one such root element, it is commonly referred to as
* <em>the</em> 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 <code>IJavaProject</code>s.
* <p>
* This interface provides methods for performing copy, move, rename, and
* delete operations on multiple Java elements.
* </p>
* <p>
* An instance of one of these handles can be created via
* <code>JavaCore.create(workspace.getRoot())</code>.
* </p>
*
* @see JavaCore#create(org.eclipse.core.resources.IWorkspaceRoot)
* @noimplement This interface is not intended to be implemented by clients.
*/
public interface IJavaModel extends IJavaElement, IOpenable, IParent {
/**
* Returns whether this Java model contains an <code>IJavaElement</code> whose
* resource is the given resource or a non-Java resource which is the given resource.
* <p>
* Note: no existency check is performed on the argument resource. If it is not accessible
* (see <code>IResource.isAccessible()</code>) yet but would be located in Java model
* range, then it will return <code>true</code>.
* </p><p>
* If the resource is accessible, it can be reached by navigating the Java model down using the
* <code>getChildren()</code> and/or <code>getNonJavaResources()</code> methods.
* </p>
* @param resource the resource to check
* @return true if the resource is accessible through the Java model
* @since 2.1
*/
boolean contains(IResource resource);
/**
* 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.
* <p>
* Optionally, each copy can positioned before a sibling
* element. If <code>null</code> is specified for a given sibling, the copy
* is inserted as the last child of its associated container.
* </p>
* <p>
* Optionally, each copy can be renamed. If
* <code>null</code> is specified for the new name, the copy
* is not renamed.
* </p>
* <p>
* Optionally, any existing child in the destination container with
* the same name can be replaced by specifying <code>true</code> for
* force. Otherwise an exception is thrown in the event that a name
* collision occurs.
* </p>
*
* @param elements the elements to copy
* @param containers the container, or list of containers
* @param siblings the list of siblings element any of which may be
* <code>null</code>; or <code>null</code>
* @param renamings the list of new names any of which may be
* <code>null</code>; or <code>null</code>
* @param replace <code>true</code> if any existing child in a target container
* with the target name should be replaced, and <code>false</code> to throw an
* exception in the event of a name collision
* @param monitor a progress monitor
* @exception JavaModelException if an element could not be copied. Reasons include:
* <ul>
* <li> There is no element to process (NO_ELEMENTS_TO_PROCESS). The given elements is null or empty</li>
* <li> A specified element, container, or sibling does not exist (ELEMENT_DOES_NOT_EXIST)</li>
* <li> A <code>CoreException</code> occurred while updating an underlying resource</li>
* <li> A container is of an incompatible type (<code>INVALID_DESTINATION</code>)</li>
* <li> A sibling is not a child of it associated container (<code>INVALID_SIBLING</code>)</li>
* <li> A new name is invalid (<code>INVALID_NAME</code>)</li>
* <li> A child in its associated container already exists with the same
* name and <code>replace</code> has been specified as <code>false</code> (<code>NAME_COLLISION</code>)</li>
* <li> A container or element is read-only (<code>READ_ONLY</code>) </li>
* </ul>
* @see org.eclipse.jdt.core.IJavaModelStatusConstants#INVALID_DESTINATION
*/
void copy(IJavaElement[] elements, IJavaElement[] containers, IJavaElement[] siblings, String[] renamings, boolean replace, IProgressMonitor monitor) throws JavaModelException;
/**
* Deletes the given elements, forcing the operation if necessary and specified.
*
* @param elements the elements to delete
* @param force a flag controlling whether underlying resources that are not
* in sync with the local file system will be tolerated
* @param monitor a progress monitor
* @exception JavaModelException if an element could not be deleted. Reasons include:
* <ul>
* <li> There is no element to process (NO_ELEMENTS_TO_PROCESS). The given elements is null or empty</li>
* <li> A specified element does not exist (ELEMENT_DOES_NOT_EXIST)</li>
* <li> A <code>CoreException</code> occurred while updating an underlying resource</li>
* <li> An element is read-only (<code>READ_ONLY</code>) </li>
* </ul>
*/
void delete(IJavaElement[] elements, boolean force, IProgressMonitor monitor) throws JavaModelException;
/**
* Returns the Java project with the given name. The given name must be a valid
* path segment as defined by {@link IPath#isValidSegment(String)}.
* This is a handle-only method.
* The project may or may not exist.
*
* @param name the name of the Java project
* @return the Java project with the given name
*/
IJavaProject getJavaProject(String name);
/**
* Returns the Java projects in this Java model, or an empty array if there
* are none.
*
* @return the Java projects in this Java model, or an empty array if there
* are none
* @exception JavaModelException if this request fails.
*/
IJavaProject[] getJavaProjects() throws JavaModelException;
/**
* Returns an array of non-Java resources (that is, non-Java projects) in
* the workspace.
* <p>
* Non-Java projects include all projects that are closed (even if they have the
* Java nature).
* </p>
*
* @return an array of non-Java projects (<code>IProject</code>s) 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
*/
Object[] getNonJavaResources() throws JavaModelException;
/**
* Returns the workspace associated with this Java model.
*
* @return the workspace associated with this Java model
*/
IWorkspace getWorkspace();
/**
* 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.
* <p>
* Optionally, each element can positioned before a sibling
* element. If <code>null</code> is specified for sibling, the element
* is inserted as the last child of its associated container.
* </p>
* <p>
* Optionally, each element can be renamed. If
* <code>null</code> is specified for the new name, the element
* is not renamed.
* </p>
* <p>
* Optionally, any existing child in the destination container with
* the same name can be replaced by specifying <code>true</code> for
* force. Otherwise an exception is thrown in the event that a name
* collision occurs.
* </p>
*
* @param elements the elements to move
* @param containers the container, or list of containers
* @param siblings the list of siblings element any of which may be
* <code>null</code>; or <code>null</code>
* @param renamings the list of new names any of which may be
* <code>null</code>; or <code>null</code>
* @param replace <code>true</code> if any existing child in a target container
* with the target name should be replaced, and <code>false</code> to throw an
* exception in the event of a name collision
* @param monitor a progress monitor
* @exception JavaModelException if an element could not be moved. Reasons include:
* <ul>
* <li> There is no element to process (NO_ELEMENTS_TO_PROCESS). The given elements is null or empty</li>
* <li> A specified element, container, or sibling does not exist (ELEMENT_DOES_NOT_EXIST)</li>
* <li> A <code>CoreException</code> occurred while updating an underlying resource</li>
* <li> A container is of an incompatible type (<code>INVALID_DESTINATION</code>)</li>
* <li> A sibling is not a child of it associated container (<code>INVALID_SIBLING</code>)</li>
* <li> A new name is invalid (<code>INVALID_NAME</code>)</li>
* <li> A child in its associated container already exists with the same
* name and <code>replace</code> has been specified as <code>false</code> (<code>NAME_COLLISION</code>)</li>
* <li> A container or element is read-only (<code>READ_ONLY</code>) </li>
* </ul>
*
* @exception IllegalArgumentException any element or container is <code>null</code>
* @see org.eclipse.jdt.core.IJavaModelStatusConstants#INVALID_DESTINATION
*/
void move(IJavaElement[] elements, IJavaElement[] containers, IJavaElement[] siblings, String[] renamings, boolean replace, 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 <code>null</code> along is equivalent to refreshing the entire mode).
* The elements can be:
* <ul>
* <li> package fragment roots corresponding to external archives
* <li> Java projects, which referenced external archives will be refreshed
* <li> Java model, all referenced external archives will be refreshed.
* </ul>
* <p> 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.
* <p>
* <b>Since 3.7</b>, a project refresh automatically triggers a refresh of external archives.
* Hence, this method doesn't need to be explicitly called after a project refresh.
* <p>
* @param elementsScope - a collection of elements defining the scope of the refresh
* @param monitor - a progress monitor used to report progress
* @exception JavaModelException in one of the corresponding situation:
* <ul>
* <li> an exception occurs while accessing project resources </li>
* </ul>
*
* @see IJavaElementDelta
* @since 2.0
*/
void refreshExternalArchives(IJavaElement[] elementsScope, 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.
*
* @param elements the elements to rename
* @param destinations the container, or list of containers
* @param names the list of new names
* @param replace <code>true</code> if an existing child in a target container
* with the target name should be replaced, and <code>false</code> to throw an
* exception in the event of a name collision
* @param monitor a progress monitor
* @exception JavaModelException if an element could not be renamed. Reasons include:
* <ul>
* <li> There is no element to process (NO_ELEMENTS_TO_PROCESS). The given elements is null or empty</li>
* <li> A specified element does not exist (ELEMENT_DOES_NOT_EXIST)</li>
* <li> A <code>CoreException</code> occurred while updating an underlying resource
* <li> A new name is invalid (<code>INVALID_NAME</code>)
* <li> A child already exists with the same name and <code>replace</code> has been specified as <code>false</code> (<code>NAME_COLLISION</code>)
* <li> An element is read-only (<code>READ_ONLY</code>)
* </ul>
*/
void rename(IJavaElement[] elements, IJavaElement[] destinations, String[] names, boolean replace, IProgressMonitor monitor) throws JavaModelException;
}