JDBCProvider.java 文件源码

public EntityManagerFactory build() {

        Properties properties = createProperties();

        DefaultPersistenceUnitInfoImpl persistenceUnitInfo = new DefaultPersistenceUnitInfoImpl(JSPARE_GATEWAY_DATASOURCE);
        persistenceUnitInfo.setProperties(properties);

        // Using RESOURCE_LOCAL for manage transactions on DAO side.
        persistenceUnitInfo.setTransactionType(PersistenceUnitTransactionType.RESOURCE_LOCAL);

        // Add all entities to configuration
        ClassAnnotationMatchProcessor processor = (c) -> persistenceUnitInfo.addAnnotatedClassName(c);
        ClasspathScannerUtils.scanner(ALL_SCAN_QUOTE).matchClassesWithAnnotation(Entity.class, processor)
                .scan(NUMBER_CLASSPATH_SCANNER_THREADS);

        Map<String, Object> configuration = new HashMap<>();
        properties.forEach((k, v) -> configuration.put((String) k, v));

        EntityManagerFactory entityManagerFactory = persistenceProvider.createContainerEntityManagerFactory(persistenceUnitInfo,
                configuration);
        return entityManagerFactory;
    }