diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0-M5.1-RC1/modules/sca-api/src/main/java/org/oasisopen/sca/client/impl/SCAClientFactoryFinderImpl.java')
-rw-r--r-- | sca-java-2.x/tags/2.0-M5.1-RC1/modules/sca-api/src/main/java/org/oasisopen/sca/client/impl/SCAClientFactoryFinderImpl.java | 289 |
1 files changed, 0 insertions, 289 deletions
diff --git a/sca-java-2.x/tags/2.0-M5.1-RC1/modules/sca-api/src/main/java/org/oasisopen/sca/client/impl/SCAClientFactoryFinderImpl.java b/sca-java-2.x/tags/2.0-M5.1-RC1/modules/sca-api/src/main/java/org/oasisopen/sca/client/impl/SCAClientFactoryFinderImpl.java deleted file mode 100644 index 4aa312f6b5..0000000000 --- a/sca-java-2.x/tags/2.0-M5.1-RC1/modules/sca-api/src/main/java/org/oasisopen/sca/client/impl/SCAClientFactoryFinderImpl.java +++ /dev/null @@ -1,289 +0,0 @@ -/*
- * Copyright(C) OASIS(R) 2005,2010. All Rights Reserved.
- * OASIS trademark, IPR and other policies apply.
- */
-package org.oasisopen.sca.client.impl;
-
-import org.oasisopen.sca.client.SCAClientFactoryFinder;
-
-import java.io.BufferedReader;
-import java.io.Closeable;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.lang.reflect.Constructor;
-import java.net.URI;
-import java.net.URL;
-import java.util.Properties;
-
-import org.oasisopen.sca.NoSuchDomainException;
-import org.oasisopen.sca.ServiceRuntimeException;
-import org.oasisopen.sca.client.SCAClientFactory;
-
-/**
- * This is a default implementation of an SCAClientFactoryFinder which is
- * used to find an implementation of the SCAClientFactory interface.
- *
- * @see SCAClientFactoryFinder
- * @see SCAClientFactory
- *
- * @author OASIS Open
- */
-public class SCAClientFactoryFinderImpl implements SCAClientFactoryFinder {
-
- /**
- * The name of the System Property used to determine the SPI
- * implementation to use for the SCAClientFactory.
- */
- private static final String SCA_CLIENT_FACTORY_PROVIDER_KEY =
- SCAClientFactory.class.getName();
-
- /**
- * The name of the file loaded from the ClassPath to determine
- * the SPI implementation to use for the SCAClientFactory.
- */
- private static final String SCA_CLIENT_FACTORY_PROVIDER_META_INF_SERVICE
- = "META-INF/services/" + SCA_CLIENT_FACTORY_PROVIDER_KEY;
-
- /**
- * Public Constructor
- */
- public SCAClientFactoryFinderImpl() {
- }
-
- /**
- * Creates an instance of the SCAClientFactorySPI implementation.
- * This discovers the SCAClientFactorySPI Implementation and instantiates
- * the provider's implementation.
- *
- * @param properties Properties that may be used when creating a new
- * instance of the SCAClient
- * @param classLoader ClassLoader that may be used when creating a new
- * instance of the SCAClient
- * @return new instance of the SCAClientFactory
- * @throws ServiceRuntimeException Failed to create SCAClientFactory
- * Implementation.
- */
- public SCAClientFactory find(Properties properties,
- ClassLoader classLoader,
- URI domainURI )
- throws NoSuchDomainException, ServiceRuntimeException {
- if (classLoader == null) {
- classLoader = getThreadContextClassLoader ();
- }
- final String factoryImplClassName =
- discoverProviderFactoryImplClass(properties, classLoader);
- final Class<? extends SCAClientFactory> factoryImplClass
- = loadProviderFactoryClass(factoryImplClassName,
- classLoader);
- final SCAClientFactory factory =
- instantiateSCAClientFactoryClass(factoryImplClass,
- domainURI );
- return factory;
- }
-
- /**
- * Gets the Context ClassLoader for the current Thread.
- *
- * @return The Context ClassLoader for the current Thread.
- */
- private static ClassLoader getThreadContextClassLoader () {
- final ClassLoader threadClassLoader =
- Thread.currentThread().getContextClassLoader();
- return threadClassLoader;
- }
-
- /**
- * Attempts to discover the class name for the SCAClientFactorySPI
- * implementation from the specified Properties, the System Properties
- * or the specified ClassLoader.
- *
- * @return The class name of the SCAClientFactorySPI implementation
- * @throw ServiceRuntimeException Failed to find implementation for
- * SCAClientFactorySPI.
- */
- private static String
- discoverProviderFactoryImplClass(Properties properties,
- ClassLoader classLoader)
- throws ServiceRuntimeException {
- String providerClassName =
- checkPropertiesForSPIClassName(properties);
- if (providerClassName != null) {
- return providerClassName;
- }
-
- providerClassName =
- checkPropertiesForSPIClassName(System.getProperties());
- if (providerClassName != null) {
- return providerClassName;
- }
-
- providerClassName = checkMETAINFServicesForSPIClassName(classLoader);
- if (providerClassName == null) {
- throw new ServiceRuntimeException(
- "Failed to find implementation for SCAClientFactory");
- }
-
- return providerClassName;
- }
-
- /**
- * Attempts to find the class name for the SCAClientFactorySPI
- * implementation from the specified Properties.
- *
- * @return The class name for the SCAClientFactorySPI implementation
- * or <code>null</code> if not found.
- */
- private static String
- checkPropertiesForSPIClassName(Properties properties) {
- if (properties == null) {
- return null;
- }
-
- final String providerClassName =
- properties.getProperty(SCA_CLIENT_FACTORY_PROVIDER_KEY);
- if (providerClassName != null && providerClassName.length() > 0) {
- return providerClassName;
- }
-
- return null;
- }
-
- /**
- * Attempts to find the class name for the SCAClientFactorySPI
- * implementation from the META-INF/services directory
- *
- * @return The class name for the SCAClientFactorySPI implementation or
- * <code>null</code> if not found.
- */
- private static String checkMETAINFServicesForSPIClassName(ClassLoader cl)
- {
- final URL url =
- cl.getResource(SCA_CLIENT_FACTORY_PROVIDER_META_INF_SERVICE);
- if (url == null) {
- return null;
- }
-
- InputStream in = null;
- try {
- in = url.openStream();
- BufferedReader reader = null;
- try {
- reader =
- new BufferedReader(new InputStreamReader(in, "UTF-8"));
-
- String line;
- while ((line = readNextLine(reader)) != null) {
- if (!line.startsWith("#") && line.length() > 0) {
- return line;
- }
- }
-
- return null;
- } finally {
- closeStream(reader);
- }
- } catch (IOException ex) {
- throw new ServiceRuntimeException(
- "Failed to discover SCAClientFactory provider", ex);
- } finally {
- closeStream(in);
- }
- }
-
- /**
- * Reads the next line from the reader and returns the trimmed version
- * of that line
- *
- * @param reader The reader from which to read the next line
- * @return The trimmed next line or <code>null</code> if the end of the
- * stream has been reached
- * @throws IOException I/O error occurred while reading from Reader
- */
- private static String readNextLine(BufferedReader reader)
- throws IOException {
-
- String line = reader.readLine();
- if (line != null) {
- line = line.trim();
- }
- return line;
- }
-
- /**
- * Loads the specified SCAClientFactory Implementation class.
- *
- * @param factoryImplClassName The name of the SCAClientFactory
- * Implementation class to load
- * @return The specified SCAClientFactory Implementation class
- * @throws ServiceRuntimeException Failed to load the SCAClientFactory
- * Implementation class
- */
- private static Class<? extends SCAClientFactory>
- loadProviderFactoryClass(String factoryImplClassName,
- ClassLoader classLoader)
- throws ServiceRuntimeException {
-
- try {
- final Class<?> providerClass =
- classLoader.loadClass(factoryImplClassName);
- final Class<? extends SCAClientFactory> providerFactoryClass =
- providerClass.asSubclass(SCAClientFactory.class);
- return providerFactoryClass;
- } catch (ClassNotFoundException ex) {
- throw new ServiceRuntimeException(
- "Failed to load SCAClientFactory implementation class "
- + factoryImplClassName, ex);
- } catch (ClassCastException ex) {
- throw new ServiceRuntimeException(
- "Loaded SCAClientFactory implementation class "
- + factoryImplClassName
- + " is not a subclass of "
- + SCAClientFactory.class.getName() , ex);
- }
- }
-
- /**
- * Instantiate an instance of the specified SCAClientFactorySPI
- * Implementation class.
- *
- * @param factoryImplClass The SCAClientFactorySPI Implementation
- * class to instantiate.
- * @return An instance of the SCAClientFactorySPI Implementation class
- * @throws ServiceRuntimeException Failed to instantiate the specified
- * specified SCAClientFactorySPI Implementation class
- */
- private static SCAClientFactory instantiateSCAClientFactoryClass(
- Class<? extends SCAClientFactory> factoryImplClass,
- URI domainURI)
- throws NoSuchDomainException, ServiceRuntimeException {
-
- try {
- Constructor<? extends SCAClientFactory> URIConstructor =
- factoryImplClass.getConstructor(domainURI.getClass());
- SCAClientFactory provider =
- URIConstructor.newInstance( domainURI );
- return provider;
- } catch (Throwable ex) {
- throw new ServiceRuntimeException(
- "Failed to instantiate SCAClientFactory implementation class "
- + factoryImplClass, ex);
- }
- }
-
- /**
- * Utility method for closing Closeable Object.
- *
- * @param closeable The Object to close.
- */
- private static void closeStream(Closeable closeable) {
- if (closeable != null) {
- try{
- closeable.close();
- } catch (IOException ex) {
- throw new ServiceRuntimeException("Failed to close stream",
- ex);
- }
- }
- }
-}
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