com.tensegrity.graph.view.geometry
Class GraphGeometryService

java.lang.Object
  com.tensegrity.graph.view.geometry.GraphGeometryService

public class GraphGeometryService

extends java.lang.Object

This class has static method(s) for loading xml geometry-data resources from files with java's built-in classloader-based resource loading facility.

Version:

$Id: GraphGeometryService.java,v 1.25 2005/12/12 15:21:57 MichaelKegel Exp $

Author:

MichaelKegel

See Also:

GeometryPool, GraphGeometryService

Method Summary

static java.lang.Object	createObjectFromItem(GeometryDescriptorItem item) This method constructs an object from the given GeometryDescriptorItem.
static AttributeSet	getItemAttributes(int itemType) Returns the AttributeSet for the given item identifier.
static void	init()
static void	loadGeometriesFromResource(java.lang.String filename, java.lang.Class resourceclass) Loads the given geometry into the GeometryPool
static void	loadGeometriesFromResource(java.lang.String filename, java.lang.Class resourceClass, boolean overwriteExisting) Loads the geometry definitions from the file given through filename.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

init

public static final void init()

loadGeometriesFromResource

public static final void loadGeometriesFromResource(java.lang.String filename,
                                                    java.lang.Class resourceclass)
                                             throws ReadException

Loads the given geometry into the GeometryPool

Parameters:

filename - the filename for the resource, which is passed to the ClassLoader of the given class. The ClassLoader will then figure out the exact location of the geometry definitions.

resourceclass - the class whose ClassLoader to use for loading the geometry definitions.

Throws:

ReadException - thrown if the loading failed.

loadGeometriesFromResource

public static final void loadGeometriesFromResource(java.lang.String filename,
                                                    java.lang.Class resourceClass,
                                                    boolean overwriteExisting)
                                             throws XMLParseException,
                                                    ReadException

Loads the geometry definitions from the file given through filename. The filename must be relative to the reference class given by resourceClass.
The flag given by overwriteExisting indicates whether to overwrite definitions that have been loaded previously and have the same name as the ones that should be loaded from the file.

Parameters:

filename - the relative filename

overwriteExisting - flag that indicates whether to overwrite existing definition with the same name

Throws:

XMLParseException - thrown when an error occurs while read xml from the file given by filename

ReadException - thrown when an error occurs while translating the read xml structure into corresponding definition objects

getItemAttributes

public static final AttributeSet getItemAttributes(int itemType)

Returns the AttributeSet for the given item identifier.

Parameters:

itemType - the item identifier.

Returns:

the AttributeSet for the given item identifier.

createObjectFromItem

public static final java.lang.Object createObjectFromItem(GeometryDescriptorItem item)
                                                   throws GeometryItemCreationException

This method constructs an object from the given GeometryDescriptorItem.

Parameters:

item - the GeometryDescriptorItem to create on object from.

Returns:

the object that was created from the given GeometryDescriptorItem.

Throws:

GeometryItemCreationException - thrown if item creation failed.