Java MapDataSourceLookup類代碼示例

import org.springframework.jdbc.datasource.lookup.MapDataSourceLookup; //導入依賴的package包/類
@Test
public void testExampleComplex() throws Exception {
	DataSource ds = new DriverManagerDataSource();

	String resource = "/org/springframework/orm/jpa/persistence-complex.xml";
	MapDataSourceLookup dataSourceLookup = new MapDataSourceLookup();
	Map<String, DataSource> dataSources = new HashMap<String, DataSource>();
	dataSources.put("jdbc/MyPartDB", ds);
	dataSources.put("jdbc/MyDB", ds);
	dataSourceLookup.setDataSources(dataSources);
	PersistenceUnitReader reader = new PersistenceUnitReader(
			new PathMatchingResourcePatternResolver(), dataSourceLookup);
	PersistenceUnitInfo[] info = reader.readPersistenceUnitInfos(resource);

	assertEquals(2, info.length);

	PersistenceUnitInfo pu1 = info[0];

	assertEquals("pu1", pu1.getPersistenceUnitName());

	assertEquals("com.acme.AcmePersistence", pu1.getPersistenceProviderClassName());

	assertEquals(1, pu1.getMappingFileNames().size());
	assertEquals("ormap2.xml", pu1.getMappingFileNames().get(0));

	assertEquals(1, pu1.getJarFileUrls().size());
	assertEquals(new ClassPathResource("order.jar").getURL(), pu1.getJarFileUrls().get(0));

	assertFalse(pu1.excludeUnlistedClasses());

	assertSame(PersistenceUnitTransactionType.RESOURCE_LOCAL, pu1.getTransactionType());

	Properties props = pu1.getProperties();
	assertEquals(2, props.keySet().size());
	assertEquals("on", props.getProperty("com.acme.persistence.sql-logging"));
	assertEquals("bar", props.getProperty("foo"));

	assertNull(pu1.getNonJtaDataSource());

	assertSame(ds, pu1.getJtaDataSource());

	assertFalse("Exclude unlisted should default false in 1.0.", pu1.excludeUnlistedClasses());

	PersistenceUnitInfo pu2 = info[1];

	assertSame(PersistenceUnitTransactionType.JTA, pu2.getTransactionType());
	assertEquals("com.acme.AcmePersistence", pu2.getPersistenceProviderClassName());

	assertEquals(1, pu2.getMappingFileNames().size());
	assertEquals("order2.xml", pu2.getMappingFileNames().get(0));

	// the following assertions fail only during coverage runs
	// assertEquals(1, pu2.getJarFileUrls().size());
	// assertEquals(new ClassPathResource("order-supplemental.jar").getURL(), pu2.getJarFileUrls().get(0));

	assertTrue(pu2.excludeUnlistedClasses());

	assertNull(pu2.getJtaDataSource());
	assertEquals(ds, pu2.getNonJtaDataSource());

	assertTrue("Exclude unlisted should be true when no value.", pu2.excludeUnlistedClasses());
}
 

import org.springframework.jdbc.datasource.lookup.MapDataSourceLookup; //導入依賴的package包/類
/**
 * Specify the JDBC DataSources that the JPA persistence provider is supposed
 * to use for accessing the database, resolving data source names in
 * {@code persistence.xml} against Spring-managed DataSources.
 * <p>The specified Map needs to define data source names for specific DataSource
 * objects, matching the data source names used in {@code persistence.xml}.
 * If not specified, data source names will be resolved as JNDI names instead
 * (as defined by standard JPA).
 * @see org.springframework.jdbc.datasource.lookup.MapDataSourceLookup
 */
public void setDataSources(Map<String, DataSource> dataSources) {
	this.dataSourceLookup = new MapDataSourceLookup(dataSources);
}