| /******************************************************************************* |
| * Copyright (c) 2002-2005 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 - Initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.wst.wsi.internal.core.wsdl.xsd; |
| |
| import java.io.IOException; |
| import java.io.StringReader; |
| |
| import org.apache.xerces.xni.XMLResourceIdentifier; |
| import org.apache.xerces.xni.XNIException; |
| import org.apache.xerces.xni.parser.XMLEntityResolver; |
| import org.apache.xerces.xni.parser.XMLInputSource; |
| |
| /** |
| * A resolver to resolve entities from the XML catalog. |
| * |
| * @author Lawrence Mandel (lmandel@ca.ibm.com) |
| */ |
| public class XMLCatalogResolver implements XMLEntityResolver |
| { |
| protected static XMLCatalogResolver xmlCatalog; |
| |
| /** |
| * Constructor. |
| */ |
| protected XMLCatalogResolver() |
| { |
| } |
| |
| /** |
| * Get the instance of this resolver. |
| * |
| * @return the instance of this resolver |
| */ |
| public static XMLCatalogResolver getInstance() |
| { |
| if (xmlCatalog == null) |
| { |
| xmlCatalog = new XMLCatalogResolver(); |
| } |
| return xmlCatalog; |
| } |
| |
| /** |
| * @see org.xml.sax.EntityResolver#resolveEntity(java.lang.String, java.lang.String) |
| */ |
| public XMLInputSource resolveEntity(XMLResourceIdentifier resourceIdentifier) throws XNIException, IOException |
| { |
| String publicId = resourceIdentifier.getPublicId(); |
| String systemId = resourceIdentifier.getExpandedSystemId(); |
| String location = XMLCatalog.getInstance().resolveEntityLocation(publicId, systemId); |
| if (location == null) |
| { |
| XMLInputSource inputSource = new XMLInputSource(publicId, systemId, systemId, new StringReader(location), null); |
| return inputSource; |
| } |
| // otherwise return null to tell the parser to locate the systemId as a URI |
| return null; |
| } |
| } |