/**
* Perform Spring-based scanning for entity classes.
*
* @see #setPackagesToScan
*/
private SpringPersistenceUnitInfo buildDefaultPersistenceUnitInfo() {
SpringPersistenceUnitInfo scannedUnit = new SpringPersistenceUnitInfo();
scannedUnit.setPersistenceUnitName(this.defaultPersistenceUnitName);
scannedUnit.excludeUnlistedClasses();
if (this.packagesToScan != null) {
for (String pkg : this.packagesToScan) {
try {
String pattern =
ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX
+ ClassUtils.convertClassNameToResourcePath(pkg)
+ ENTITY_CLASS_RESOURCE_PATTERN;
Resource[] resources = this.resourcePatternResolver.getResources(pattern);
MetadataReaderFactory readerFactory =
new CachingMetadataReaderFactory(this.resourcePatternResolver);
for (Resource resource : resources) {
if (resource.isReadable()) {
MetadataReader reader = readerFactory.getMetadataReader(resource);
String className = reader.getClassMetadata().getClassName();
if (matchesFilter(reader, readerFactory)) {
scannedUnit.addManagedClassName(className);
}
}
}
} catch (IOException ex) {
throw new PersistenceException("Failed to scan classpath for unlisted classes", ex);
}
}
}
if (this.mappingResources != null) {
for (String mappingFileName : this.mappingResources) {
scannedUnit.addMappingFileName(mappingFileName);
}
}
return scannedUnit;
}
/**
* Prepare the PersistenceUnitInfos according to the configuration of this manager: scanning for
* <code>persistence.xml</code> files, parsing all matching files, configurating and
* post-processing them.
*
* <p>PersistenceUnitInfos cannot be obtained before this preparation method has been invoked.
*
* @see #obtainDefaultPersistenceUnitInfo()
* @see #obtainPersistenceUnitInfo(String)
*/
public void preparePersistenceUnitInfos() {
this.persistenceUnitInfoNames.clear();
this.persistenceUnitInfos.clear();
List<SpringPersistenceUnitInfo> puis = readPersistenceUnitInfos();
for (SpringPersistenceUnitInfo pui : puis) {
if (pui.getPersistenceUnitRootUrl() == null) {
pui.setPersistenceUnitRootUrl(determineDefaultPersistenceUnitRootUrl());
}
if (pui.getNonJtaDataSource() == null) {
pui.setNonJtaDataSource(this.defaultDataSource);
}
if (this.loadTimeWeaver != null) {
pui.init(this.loadTimeWeaver);
} else {
pui.init(this.resourcePatternResolver.getClassLoader());
}
postProcessPersistenceUnitInfo(pui);
String name = pui.getPersistenceUnitName();
if (!this.persistenceUnitInfoNames.add(name)) {
StringBuilder msg = new StringBuilder();
msg.append("Conflicting persistence unit definitions for name '")
.append(name)
.append("': ");
msg.append(pui.getPersistenceUnitRootUrl()).append(", ");
msg.append(this.persistenceUnitInfos.get(name).getPersistenceUnitRootUrl());
throw new IllegalStateException(msg.toString());
}
PersistenceUnitInfo puiToStore = pui;
if (jpa2ApiPresent) {
puiToStore =
(PersistenceUnitInfo)
Proxy.newProxyInstance(
SmartPersistenceUnitInfo.class.getClassLoader(),
new Class[] {SmartPersistenceUnitInfo.class},
new Jpa2PersistenceUnitInfoDecorator(pui));
}
this.persistenceUnitInfos.put(name, puiToStore);
}
}
