| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.ode.bpel.compiler.bom; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.xml.sax.EntityResolver; |
| import org.xml.sax.InputSource; |
| import org.xml.sax.SAXException; |
| |
| import java.io.IOException; |
| import java.net.URL; |
| import java.util.HashMap; |
| |
| /** |
| * Resolver implementation that restricts us to a known set of resources. |
| */ |
| class LocalEntityResolver implements EntityResolver { |
| private static final Log __log = LogFactory.getLog(LocalEntityResolver.class); |
| |
| private final HashMap<String, URL> _mappings = new HashMap<String,URL>(); |
| |
| public InputSource resolveEntity(String publicId, String systemId) |
| throws SAXException, IOException { |
| if (__log.isTraceEnabled()) |
| __log.trace("resolveEntity(" + publicId + "," + systemId + ")") ; |
| |
| URL target = _mappings.get(systemId); |
| if (target == null) |
| target = _mappings.get(publicId); |
| |
| if (target == null) { |
| if (__log.isDebugEnabled()) |
| __log.debug("resolveEntity(" + publicId + "," + systemId + |
| ") failed (resource not found) "); |
| throw new IOException("Resource not found: " + publicId + " : " + systemId); |
| } |
| |
| if (__log.isDebugEnabled()) |
| __log.debug("resolveEntity(" + publicId + "," + systemId + |
| ") ==> target" ); |
| |
| return new InputSource(target.openStream()); |
| } |
| |
| |
| void register(String id, URL location) { |
| if (id == null) |
| throw new NullPointerException("id arg must not be null!"); |
| if (location == null) |
| throw new NullPointerException("location arg must not be null for id " + id); |
| |
| if (__log.isDebugEnabled()) |
| __log.debug("mapping " + id + " ==> " + location); |
| _mappings.put(id, location); |
| } |
| } |