| /* Copyright 2004 The Apache Software Foundation |
| * |
| * Licensed 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.xmlbeans.impl.soap; |
| |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| |
| import java.util.Properties; |
| import org.apache.xmlbeans.SystemProperties; |
| |
| /** |
| * This class is used to locate factory classes for javax.xml.soap. |
| * It has package scope since it is not part of JAXM and should not |
| * be accessed from other packages. |
| */ |
| class FactoryFinder { |
| /** |
| * instantiates an object go the given classname. |
| * |
| * @param factoryClassName |
| * @return a factory object |
| * @throws SOAPException |
| */ |
| private static Object newInstance(String factoryClassName) throws SOAPException { |
| ClassLoader classloader = null; |
| try { |
| classloader = Thread.currentThread().getContextClassLoader(); |
| } catch (Exception exception) { |
| throw new SOAPException(exception.toString(), exception); |
| } |
| |
| try { |
| Class factory = null; |
| if (classloader == null) { |
| factory = Class.forName(factoryClassName); |
| } else { |
| try { |
| factory = classloader.loadClass(factoryClassName); |
| } catch (ClassNotFoundException cnfe) {} |
| } |
| if (factory == null) { |
| classloader = FactoryFinder.class.getClassLoader(); |
| factory = classloader.loadClass(factoryClassName); |
| } |
| return factory.newInstance(); |
| } catch (ClassNotFoundException classnotfoundexception) { |
| throw new SOAPException("Provider " + factoryClassName + " not found", classnotfoundexception); |
| } catch (Exception exception) { |
| throw new SOAPException("Provider " + factoryClassName + " could not be instantiated: " + exception, exception); |
| } |
| } |
| |
| /** |
| * Instantiates a factory object given the factory's property name and the |
| * default class name. |
| * |
| * @param factoryPropertyName |
| * @param defaultFactoryClassName |
| * @return a factory object |
| * @throws SOAPException |
| */ |
| static Object find(String factoryPropertyName, String defaultFactoryClassName) throws SOAPException { |
| try { |
| String factoryClassName = SystemProperties.getProperty(factoryPropertyName); |
| if (factoryClassName != null) { |
| return newInstance(factoryClassName); |
| } |
| } catch (SecurityException securityexception) {} |
| |
| try { |
| String propertiesFileName = SystemProperties.getProperty("java.home") |
| + File.separator + "lib" |
| + File.separator + "jaxm.properties"; |
| File file = new File(propertiesFileName); |
| if (file.exists()) { |
| FileInputStream fileInput = new FileInputStream(file); |
| Properties properties = new Properties(); |
| properties.load(fileInput); |
| fileInput.close(); |
| String factoryClassName = properties.getProperty(factoryPropertyName); |
| return newInstance(factoryClassName); |
| } |
| } catch (Exception exception1) {} |
| |
| String factoryResource = "META-INF/services/" + factoryPropertyName; |
| |
| try { |
| InputStream inputstream = getResource(factoryResource); |
| if (inputstream != null) { |
| BufferedReader bufferedreader = new BufferedReader(new InputStreamReader(inputstream, "UTF-8")); |
| String factoryClassName = bufferedreader.readLine(); |
| bufferedreader.close(); |
| if ((factoryClassName != null) && !"".equals(factoryClassName)) { |
| return newInstance(factoryClassName); |
| } |
| } |
| } catch (Exception exception2) {} |
| |
| if (defaultFactoryClassName == null) { |
| throw new SOAPException("Provider for " + factoryPropertyName + " cannot be found", null); |
| } else { |
| return newInstance(defaultFactoryClassName); |
| } |
| } |
| |
| /** |
| * Returns an input stream for the specified resource. |
| * |
| * <p>This method will firstly try |
| * <code>ClassLoader.getSystemResourceAsStream()</code> then |
| * the class loader of the current thread with |
| * <code>getResourceAsStream()</code> and finally attempt |
| * <code>getResourceAsStream()</code> on |
| * <code>FactoryFinder.class.getClassLoader()</code>. |
| * |
| * @param factoryResource the resource name |
| * @return an InputStream that can be used to read that resource, or |
| * <code>null</code> if the resource could not be resolved |
| */ |
| private static InputStream getResource(String factoryResource) { |
| ClassLoader classloader = null; |
| try { |
| classloader = Thread.currentThread().getContextClassLoader(); |
| } catch (SecurityException securityexception) {} |
| |
| InputStream inputstream; |
| if (classloader == null) { |
| inputstream = ClassLoader.getSystemResourceAsStream(factoryResource); |
| } else { |
| inputstream = classloader.getResourceAsStream(factoryResource); |
| } |
| |
| if (inputstream == null) { |
| inputstream = FactoryFinder.class.getResourceAsStream(factoryResource); |
| } |
| if (inputstream == null && FactoryFinder.class.getClassLoader() != null) { |
| inputstream = FactoryFinder.class.getClassLoader().getResourceAsStream(factoryResource); |
| } |
| return inputstream; |
| } |
| } |