ptolemy.data.expr

Class XMLParser.EntityResolver

java.lang.Object

ptolemy.data.expr.XMLParser.EntityResolver

All Implemented Interfaces:

org.xml.sax.EntityResolver

Enclosing class:

XMLParser

public static class XMLParser.EntityResolver
extends java.lang.Object
implements org.xml.sax.EntityResolver

The entity resolver that tries to first load a DTD file locally, and if it is not found, looks for it on the Internet using the DTD file's system ID. The DTD file, as well as its version, is uniquely identified by its public ID.

Since:

Ptolemy II 4.0

Version:

$Id$

Author:

Thomas Feng

Pt.AcceptedRating:

Red (tfeng)

Pt.ProposedRating:

Green (tfeng)

Constructor Summary

Constructors

Constructor and Description
EntityResolver()

Method Summary

Modifier and Type	Method and Description
org.xml.sax.InputSource	resolveEntity(java.lang.String publicId, java.lang.String systemId) Resolve an entity (a DTD file) by first looking for it locally.

Methods inherited from class java.lang.Object

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

Constructor Detail

EntityResolver

public EntityResolver()

Method Detail

resolveEntity

public org.xml.sax.InputSource resolveEntity(java.lang.String publicId,
                                             java.lang.String systemId)

Resolve an entity (a DTD file) by first looking for it locally. If it is not found locally, this resolver tries to grab it from the Internet using its systemId.

Specified by:

resolveEntity in interface org.xml.sax.EntityResolver

Parameters:

publicId - The public ID of the entity, for example, "-//UC Berkeley//DTD MoML 1//EN" for Ptolemy MoML 1.0.

systemId - The system ID of the entity, for example, "http://ptolemy.eecs.berkeley.edu/xml/dtd/MoML_1.dtd".

Returns:

The input source that contains the content of the DTD, or null if it cannot be loaded either locally or from the Internet.