Package org.eclipse.core.resources.mapping

Class ResourceTraversal

  • public class ResourceTraversal
extends Object
    A resource traversal is simply a set of resources and the depth to which each is to be traversed. A set of traversals is used to describe the resources that constitute a model element.

    The flags of the traversal indicate which special resources should be included or excluded from the traversal. The flags used are the same as those passed to the IResource.accept(IResourceVisitor, int, int) method.

    This class may be instantiated or subclassed by clients.

    Since:
    3.2
    See Also:
    IResource

    • Constructor Detail

      • ResourceTraversal

        public ResourceTraversal​(IResource[] resources,
                         int depth,
                         int flags)
        Creates a new resource traversal.
        Parameters:
        resources - The resources in the traversal
        depth - The traversal depth
        flags - the flags for this traversal. The traversal flags match those that are passed to the IResource#accept method.

    • Method Detail

      • accept

        public void accept​(IResourceVisitor visitor)
            throws CoreException
        Visits all existing resources defined by this traversal.
        Parameters:
        visitor - a resource visitor
        Throws:
        CoreException - if this method fails. Reasons include:
        • The visitor failed with this exception.

      • contains

        public boolean contains​(IResource resource)
        Return whether the given resource is contained in or covered by this traversal, regardless of whether the resource currently exists.
        Parameters:
        resource - the resource to be tested
        Returns:
        true if the resource is in this traversal, and false otherwise.

      • findMarkers

        public IMarker[] findMarkers​(String type,
                             boolean includeSubtypes)
                      throws CoreException
        Returns all markers of the specified type on existing resources in this traversal. If includeSubtypes is false, only markers whose type exactly matches the given type are returned. Returns an empty array if there are no matching markers.
        Parameters:
        type - the type of marker to consider, or null to indicate all types
        includeSubtypes - whether or not to consider sub-types of the given type
        Returns:
        an array of markers
        Throws:
        CoreException - if this method fails.
        See Also:
        IResource.findMarkers(String, boolean, int)

      • getDepth

        public int getDepth()
        Returns the depth to which the resources should be traversed.
        Returns:
        the depth to which the physical resources are to be traversed (one of IResource.DEPTH_ZERO, IResource.DEPTH_ONE or IResource.DEPTH_INFINITE)

      • getFlags

        public int getFlags()
        Return the flags for this traversal. The flags of the traversal indicate which special resources should be included or excluded from the traversal. The flags used are the same as those passed to the IResource#accept(IResourceVisitor, int, int) method. Clients who traverse the resources manually (i.e. without calling accept) should respect the flags when determining which resources are included in the traversal.
        Returns:
        the flags for this traversal

      • getResources

        public IResource[] getResources()
        Returns the file system resource(s) for this traversal. The returned resources must be contained within the same project and need not exist in the local file system. The traversal of the returned resources should be done considering the flag returned by getDepth. If a resource returned by a traversal is a file, it should always be visited. If a resource of a traversal is a folder then files contained in the folder can only be visited if the folder is IResource.DEPTH_ONE or IResource.DEPTH_INFINITE. Child folders should only be visited if the depth is IResource.DEPTH_INFINITE.
        Returns:
        The resources in this traversal