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org.eclipse.jdt.core
Interface IPackageFragmentRoot

All Superinterfaces:
org.eclipse.core.runtime.IAdaptable, IJavaElement, IOpenable, IParent
All Known Implementing Classes:
ExternalPackageFragmentRoot, JarPackageFragmentRoot, PackageFragmentRoot
public interface IPackageFragmentRoot
extends IParent, IJavaElement, IOpenable

A package fragment root contains a set of package fragments. It corresponds to an underlying resource which is either a folder, JAR, or zip. In the case of a folder, all descendant folders represent package fragments. For a given child folder representing a package fragment, the corresponding package name is composed of the folder names between the folder for this root and the child folder representing the package, separated by '.'. In the case of a JAR or zip, the contents of the archive dictates the set of package fragments in an analogous manner. Package fragment roots need to be opened before they can be navigated or manipulated. The children are of type IPackageFragment, and are in no particular order.

Field Summary
static java.lang.String DEFAULT_PACKAGEROOT_PATH
          Empty root path
static int DESTINATION_PROJECT_CLASSPATH
          Update model flag constant (bit mask value 8) indicating that the operation is to update the classpath of the destination project.
static int K_BINARY
          Kind constant for a binary path root.
static int K_SOURCE
          Kind constant for a source path root.
static int NO_RESOURCE_MODIFICATION
          Update model flag constant (bit mask value 1) indicating that the operation is to not copy/move/delete the package fragment root resource.
static int ORIGINATING_PROJECT_CLASSPATH
          Update model flag constant (bit mask value 2) indicating that the operation is to update the classpath of the originating project.
static int OTHER_REFERRING_PROJECTS_CLASSPATH
          Update model flag constant (bit mask value 4) indicating that the operation is to update the classpath of all referring projects except the originating project.
static int REPLACE
          Update model flag constant (bit mask value 16) indicating that the operation is to replace the resource and the destination project's classpath entry.
 
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
 void attachSource(org.eclipse.core.runtime.IPath sourcePath, org.eclipse.core.runtime.IPath rootPath, org.eclipse.core.runtime.IProgressMonitor monitor)
          Attaches the source archive identified by the given absolute path to this binary package fragment root.
 void copy(org.eclipse.core.runtime.IPath destination, int updateResourceFlags, int updateModelFlags, IClasspathEntry sibling, org.eclipse.core.runtime.IProgressMonitor monitor)
          Copies the resource of this package fragment root to the destination path as specified by IResource.copy(IPath, int, IProgressMonitor) but excluding nested source folders.
 IPackageFragment createPackageFragment(java.lang.String name, boolean force, org.eclipse.core.runtime.IProgressMonitor monitor)
          Creates and returns a package fragment in this root with the given dot-separated package name.
 void delete(int updateResourceFlags, int updateModelFlags, org.eclipse.core.runtime.IProgressMonitor monitor)
          Deletes the resource of this package fragment root as specified by IResource.delete(int, IProgressMonitor) but excluding nested source folders.
 int getKind()
          Returns this package fragment root's kind encoded as an integer.
 java.lang.Object[] getNonJavaResources()
          Returns an array of non-Java resources contained in this package fragment root.
 IPackageFragment getPackageFragment(java.lang.String packageName)
          Returns the package fragment with the given package name.
 IClasspathEntry getRawClasspathEntry()
          Returns the first raw classpath entry that corresponds to this package fragment root.
 org.eclipse.core.runtime.IPath getSourceAttachmentPath()
          Returns the absolute path to the source archive attached to this package fragment root's binary archive.
 org.eclipse.core.runtime.IPath getSourceAttachmentRootPath()
          Returns the path within this package fragment root's source archive.
 boolean isArchive()
          Returns whether this package fragment root's underlying resource is a binary archive (a JAR or zip file).
 boolean isExternal()
          Returns whether this package fragment root is external to the workbench (that is, a local file), and has no underlying resource.
 void move(org.eclipse.core.runtime.IPath destination, int updateResourceFlags, int updateModelFlags, IClasspathEntry sibling, org.eclipse.core.runtime.IProgressMonitor monitor)
          Moves the resource of this package fragment root to the destination path as specified by IResource.move(IPath,int,IProgressMonitor) but excluding nested source folders.
 
Methods inherited from interface org.eclipse.jdt.core.IParent
getChildren, hasChildren
 
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
 

Field Detail

K_SOURCE

static final int K_SOURCE
Kind constant for a source path root. Indicates this root only contains source files.

See Also:
Constant Field Values

K_BINARY

static final int K_BINARY
Kind constant for a binary path root. Indicates this root only contains binary files.

See Also:
Constant Field Values

DEFAULT_PACKAGEROOT_PATH

static final java.lang.String DEFAULT_PACKAGEROOT_PATH
Empty root path

See Also:
Constant Field Values

NO_RESOURCE_MODIFICATION

static final int NO_RESOURCE_MODIFICATION
Update model flag constant (bit mask value 1) indicating that the operation is to not copy/move/delete the package fragment root resource.

Since:
2.1
See Also:
Constant Field Values

ORIGINATING_PROJECT_CLASSPATH

static final int ORIGINATING_PROJECT_CLASSPATH
Update model flag constant (bit mask value 2) indicating that the operation is to update the classpath of the originating project.

Since:
2.1
See Also:
Constant Field Values

OTHER_REFERRING_PROJECTS_CLASSPATH

static final int OTHER_REFERRING_PROJECTS_CLASSPATH
Update model flag constant (bit mask value 4) indicating that the operation is to update the classpath of all referring projects except the originating project.

Since:
2.1
See Also:
Constant Field Values

DESTINATION_PROJECT_CLASSPATH

static final int DESTINATION_PROJECT_CLASSPATH
Update model flag constant (bit mask value 8) indicating that the operation is to update the classpath of the destination project.

Since:
2.1
See Also:
Constant Field Values

REPLACE

static final int REPLACE
Update model flag constant (bit mask value 16) indicating that the operation is to replace the resource and the destination project's classpath entry.

Since:
2.1
See Also:
Constant Field Values
Method Detail

attachSource

void attachSource(org.eclipse.core.runtime.IPath sourcePath,
                  org.eclipse.core.runtime.IPath rootPath,
                  org.eclipse.core.runtime.IProgressMonitor monitor)
                  throws JavaModelException
Attaches the source archive identified by the given absolute path to this binary package fragment root. rootPath specifies the location of the root within the archive or folder (empty specifies the default root and null specifies the root path should be detected). Once a source archive or folder is attached to the package fragment root, the getSource and getSourceRange methods become operational for binary types/members. To detach a source archive or folder from a package fragment root, specify null as the source path.

Parameters:
sourcePath - the given absolute path to the source archive or folder
rootPath - specifies the location of the root within the archive (empty specifies the default root and null specifies automatic detection of the root path)
monitor - the given progress monitor
Throws:
JavaModelException - if this operation fails. Reasons include:
  • This Java element does not exist (ELEMENT_DOES_NOT_EXIST)
  • A CoreException occurred while updating a server property
  • This package fragment root is not of kind binary (INVALID_ELEMENT_TYPES)
  • The path provided is not absolute (RELATIVE_PATH)

copy

void copy(org.eclipse.core.runtime.IPath destination,
          int updateResourceFlags,
          int updateModelFlags,
          IClasspathEntry sibling,
          org.eclipse.core.runtime.IProgressMonitor monitor)
          throws JavaModelException
Copies the resource of this package fragment root to the destination path as specified by IResource.copy(IPath, int, IProgressMonitor) but excluding nested source folders.

If NO_RESOURCE_MODIFICATION is specified in updateModelFlags or if this package fragment root is external, this operation doesn't copy the resource. updateResourceFlags is then ignored.

If DESTINATION_PROJECT_CLASSPATH is specified in updateModelFlags, updates the classpath of the destination's project (if it is a Java project). If a non-null sibling is specified, a copy of this root's classpath entry is inserted before the sibling on the destination project's raw classpath. If null is specified, the classpath entry is added at the end of the raw classpath.

If REPLACE is specified in updateModelFlags, overwrites the resource at the destination path if any. If the same classpath entry already exists on the destination project's raw classpath, then the sibling is ignored and the new classpath entry replaces the existing one.

If no flags is specified in updateModelFlags (using IResource.NONE), the default behavior applies: the resource is copied (if this package fragment root is not external) and the classpath is not updated.

Parameters:
destination - the destination path
updateResourceFlags - bit-wise or of update resource flag constants (IResource.FORCE and IResource.SHALLOW)
updateModelFlags - bit-wise or of update resource flag constants (DESTINATION_PROJECT_CLASSPATH and NO_RESOURCE_MODIFICATION)
sibling - the classpath entry before which a copy of the classpath entry should be inserted or null if the classpath entry should be inserted at the end
monitor - a progress monitor
Throws:
JavaModelException - if this root could not be copied. Reasons include:
  • This root does not exist (ELEMENT_DOES_NOT_EXIST)
  • A CoreException occurred while copying the resource or updating a classpath
  • The destination is not inside an existing project and updateModelFlags has been specified as DESTINATION_PROJECT_CLASSPATH (INVALID_DESTINATION)
  • The sibling is not a classpath entry on the destination project's raw classpath (INVALID_SIBLING)
  • The same classpath entry already exists on the destination project's classpath (NAME_COLLISION) and updateModelFlags has not been specified as REPLACE
Since:
2.1
See Also:
IResource.copy(IPath, boolean, IProgressMonitor)

createPackageFragment

IPackageFragment createPackageFragment(java.lang.String name,
                                       boolean force,
                                       org.eclipse.core.runtime.IProgressMonitor monitor)
                                       throws JavaModelException
Creates and returns a package fragment in this root with the given dot-separated package name. An empty string specifies the default package. This has the side effect of creating all package fragments that are a prefix of the new package fragment which do not exist yet. If the package fragment already exists, this has no effect. For a description of the force flag, see IFolder.create.

Parameters:
name - the given dot-separated package name
force - a flag controlling how to deal with resources that are not in sync with the local file system
monitor - the given progress monitor
Returns:
a package fragment in this root with the given dot-separated package name
Throws:
JavaModelException - if the element could not be created. Reasons include:
  • This Java element does not exist (ELEMENT_DOES_NOT_EXIST)
  • A CoreException occurred while creating an underlying resource
  • This package fragment root is read only (READ_ONLY)
  • The name is not a valid package name (INVALID_NAME)
See Also:
IFolder.create(boolean, boolean, IProgressMonitor)

delete

void delete(int updateResourceFlags,
            int updateModelFlags,
            org.eclipse.core.runtime.IProgressMonitor monitor)
            throws JavaModelException
Deletes the resource of this package fragment root as specified by IResource.delete(int, IProgressMonitor) but excluding nested source folders.

If NO_RESOURCE_MODIFICATION is specified in updateModelFlags or if this package fragment root is external, this operation doesn't delete the resource. updateResourceFlags is then ignored.

If ORIGINATING_PROJECT_CLASSPATH is specified in updateModelFlags, update the raw classpath of this package fragment root's project by removing the corresponding classpath entry.

If OTHER_REFERRING_PROJECTS_CLASSPATH is specified in updateModelFlags, update the raw classpaths of all other Java projects referring to this root's resource by removing the corresponding classpath entries.

If no flags is specified in updateModelFlags (using IResource.NONE), the default behavior applies: the resource is deleted (if this package fragment root is not external) and no classpaths are updated.

Parameters:
updateResourceFlags - bit-wise or of update resource flag constants (IResource.FORCE and IResource.KEEP_HISTORY)
updateModelFlags - bit-wise or of update resource flag constants (ORIGINATING_PROJECT_CLASSPATH, OTHER_REFERRING_PROJECTS_CLASSPATH and NO_RESOURCE_MODIFICATION)
monitor - a progress monitor
Throws:
JavaModelException - if this root could not be deleted. Reasons include:
  • This root does not exist (ELEMENT_DOES_NOT_EXIST)
  • A CoreException occurred while deleting the resource or updating a classpath
Since:
2.1
See Also:
IResource.delete(boolean, IProgressMonitor)

getKind

int getKind()
            throws JavaModelException
Returns this package fragment root's kind encoded as an integer. A package fragment root can contain source files (i.e. files with one of the Java-like extensions, or .class files, but not both. If the underlying folder or archive contains other kinds of files, they are ignored. In particular, .class files are ignored under a source package fragment root, and source files are ignored under a binary package fragment root.

Returns:
this package fragment root's kind encoded as an integer
Throws:
JavaModelException - if this element does not exist or if an exception occurs while accessing its corresponding resource.
See Also:
K_SOURCE, K_BINARY

getNonJavaResources

java.lang.Object[] getNonJavaResources()
                                       throws JavaModelException
Returns an array of non-Java resources contained in this package fragment root.

Non-Java resources includes other files and folders located in the same directories as the compilation units or class files under this package fragment root. Resources excluded from this package fragment root by virtue of inclusion/exclusion patterns on the corresponding source classpath entry are considered non-Java resources and will appear in the result (possibly in a folder). Thus when a nested source folder is excluded, it will appear in the non-Java resources of the outer folder.

Since 3.3, if this package fragment root is an archive, the non-Java resources are a tree of IJarEntryResources. One can navigate this tree using the IJarEntryResource.getChildren() and IJarEntryResource.getParent() methods.

Returns:
an array of non-Java resources (IFiles, IFolders, or IStorages if the package fragment root is in archive) contained in this package fragment root
Throws:
JavaModelException - if this element does not exist or if an exception occurs while accessing its corresponding resource.
See Also:
IClasspathEntry.getInclusionPatterns(), IClasspathEntry.getExclusionPatterns()

getPackageFragment

IPackageFragment getPackageFragment(java.lang.String packageName)
Returns the package fragment with the given package name. An empty string indicates the default package. This is a handle-only operation. The package fragment may or may not exist.

Parameters:
packageName - the given package name
Returns:
the package fragment with the given package name

getRawClasspathEntry

IClasspathEntry getRawClasspathEntry()
                                     throws JavaModelException
Returns the first raw classpath entry that corresponds to this package fragment root. A raw classpath entry corresponds to a package fragment root if once resolved this entry's path is equal to the root's path.

Returns:
the first raw classpath entry that corresponds to this package fragment root
Throws:
JavaModelException - if this element does not exist or if an exception occurs while accessing its corresponding resource.
Since:
2.0

getSourceAttachmentPath

org.eclipse.core.runtime.IPath getSourceAttachmentPath()
                                                       throws JavaModelException
Returns the absolute path to the source archive attached to this package fragment root's binary archive.

Returns:
the absolute path to the corresponding source archive, or null if this package fragment root's binary archive has no corresponding source archive, or if this package fragment root is not a binary archive
Throws:
JavaModelException - if this operation fails

getSourceAttachmentRootPath

org.eclipse.core.runtime.IPath getSourceAttachmentRootPath()
                                                           throws JavaModelException
Returns the path within this package fragment root's source archive. An empty path indicates that packages are located at the root of the source archive.

Returns:
the path within the corresponding source archive, or null if this package fragment root's binary archive has no corresponding source archive, or if this package fragment root is not a binary archive
Throws:
JavaModelException - if this operation fails

isArchive

boolean isArchive()
Returns whether this package fragment root's underlying resource is a binary archive (a JAR or zip file).

This is a handle-only method.

Returns:
true if this package fragment root's underlying resource is a binary archive, false otherwise

isExternal

boolean isExternal()
Returns whether this package fragment root is external to the workbench (that is, a local file), and has no underlying resource.

This is a handle-only method.

Returns:
true if this package fragment root is external to the workbench (that is, a local file), and has no underlying resource, false otherwise

move

void move(org.eclipse.core.runtime.IPath destination,
          int updateResourceFlags,
          int updateModelFlags,
          IClasspathEntry sibling,
          org.eclipse.core.runtime.IProgressMonitor monitor)
          throws JavaModelException
Moves the resource of this package fragment root to the destination path as specified by IResource.move(IPath,int,IProgressMonitor) but excluding nested source folders.

If NO_RESOURCE_MODIFICATION is specified in updateModelFlags or if this package fragment root is external, this operation doesn't move the resource. updateResourceFlags is then ignored.

If DESTINATION_PROJECT_CLASSPATH is specified in updateModelFlags, updates the classpath of the destination's project (if it is a Java project). If a non-null sibling is specified, a copy of this root's classpath entry is inserted before the sibling on the destination project's raw classpath. If null is specified, the classpath entry is added at the end of the raw classpath.

If ORIGINATING_PROJECT_CLASSPATH is specified in updateModelFlags, update the raw classpath of this package fragment root's project by removing the corresponding classpath entry.

If OTHER_REFERRING_PROJECTS_CLASSPATH is specified in updateModelFlags, update the raw classpaths of all other Java projects referring to this root's resource by removing the corresponding classpath entries.

If REPLACE is specified in updateModelFlags, overwrites the resource at the destination path if any. If the same classpath entry already exists on the destination project's raw classpath, then the sibling is ignored and the new classpath entry replaces the existing one.

If no flags is specified in updateModelFlags (using IResource.NONE), the default behavior applies: the resource is moved (if this package fragment root is not external) and no classpaths are updated.

Parameters:
destination - the destination path
updateResourceFlags - bit-wise or of update flag constants (IResource.FORCE, IResource.KEEP_HISTORY and IResource.SHALLOW)
updateModelFlags - bit-wise or of update resource flag constants (DESTINATION_PROJECT_CLASSPATH, ORIGINATING_PROJECT_CLASSPATH, OTHER_REFERRING_PROJECTS_CLASSPATH and NO_RESOURCE_MODIFICATION)
sibling - the classpath entry before which a copy of the classpath entry should be inserted or null if the classpath entry should be inserted at the end
monitor - a progress monitor
Throws:
JavaModelException - if this root could not be moved. Reasons include:
  • This root does not exist (ELEMENT_DOES_NOT_EXIST)
  • A CoreException occurred while copying the resource or updating a classpath
  • The destination is not inside an existing project and updateModelFlags has been specified as DESTINATION_PROJECT_CLASSPATH (INVALID_DESTINATION)
  • The sibling is not a classpath entry on the destination project's raw classpath (INVALID_SIBLING)
  • The same classpath entry already exists on the destination project's classpath (NAME_COLLISION) and updateModelFlags has not been specified as REPLACE
Since:
2.1
See Also:
IResource.move(IPath, boolean, IProgressMonitor)
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