/**
* Checks availability of a classpath resource.
*
* @param name Resource name.
* @return {@code true} if resource is available and ready for read, {@code false} otherwise.
*/
private boolean resourceAvailable(String name) {
InputStream cfgStream =
Thread.currentThread().getContextClassLoader().getResourceAsStream(name);
if (cfgStream == null) {
log.error("Classpath resource not found: " + name);
return false;
}
try {
// Read a single byte to force actual content access by JVM.
cfgStream.read();
return true;
} catch (IOException e) {
log.error("Failed to read classpath resource: " + name, e);
return false;
} finally {
U.close(cfgStream, log);
}
}
/**
* Initializes store.
*
* @throws GridException If failed to initialize.
*/
private void init() throws GridException {
if (initGuard.compareAndSet(false, true)) {
if (log.isDebugEnabled()) log.debug("Initializing cache store.");
try {
if (sesFactory != null)
// Session factory has been provided - nothing to do.
return;
if (!F.isEmpty(hibernateCfgPath)) {
try {
URL url = new URL(hibernateCfgPath);
sesFactory = new Configuration().configure(url).buildSessionFactory();
if (log.isDebugEnabled()) log.debug("Configured session factory using URL: " + url);
// Session factory has been successfully initialized.
return;
} catch (MalformedURLException e) {
if (log.isDebugEnabled())
log.debug("Caught malformed URL exception: " + e.getMessage());
}
// Provided path is not a valid URL. File?
File cfgFile = new File(hibernateCfgPath);
if (cfgFile.exists()) {
sesFactory = new Configuration().configure(cfgFile).buildSessionFactory();
if (log.isDebugEnabled())
log.debug("Configured session factory using file: " + hibernateCfgPath);
// Session factory has been successfully initialized.
return;
}
// Provided path is not a file. Classpath resource?
sesFactory = new Configuration().configure(hibernateCfgPath).buildSessionFactory();
if (log.isDebugEnabled())
log.debug("Configured session factory using classpath resource: " + hibernateCfgPath);
} else {
if (hibernateProps == null) {
U.warn(
log, "No Hibernate configuration has been provided for store (will use default).");
hibernateProps = new Properties();
hibernateProps.setProperty("hibernate.connection.url", DFLT_CONN_URL);
hibernateProps.setProperty("hibernate.show_sql", DFLT_SHOW_SQL);
hibernateProps.setProperty("hibernate.hbm2ddl.auto", DFLT_HBM2DDL_AUTO);
}
Configuration cfg = new Configuration();
cfg.setProperties(hibernateProps);
assert resourceAvailable(MAPPING_RESOURCE);
cfg.addResource(MAPPING_RESOURCE);
sesFactory = cfg.buildSessionFactory();
if (log.isDebugEnabled())
log.debug("Configured session factory using properties: " + hibernateProps);
}
} catch (HibernateException e) {
throw new GridException("Failed to initialize store.", e);
} finally {
initLatch.countDown();
}
} else if (initLatch.getCount() > 0) U.await(initLatch);
if (sesFactory == null) throw new GridException("Cache store was not properly initialized.");
}