org.hibernate.boot.registry.BootstrapServiceRegistryBuilder#applyClassLoader ( )源码实例Demo

/**
 * Determine the Hibernate {@link MetadataSources} to use.
 * <p>Can also be externally called to initialize and pre-populate a {@link MetadataSources}
 * instance which is then going to be used for {@link SessionFactory} building.
 * @return the MetadataSources to use (never {@code null})
 * @since 4.3
 * @see LocalSessionFactoryBuilder#LocalSessionFactoryBuilder(DataSource, ResourceLoader, MetadataSources)
 */
public MetadataSources getMetadataSources() {
	this.metadataSourcesAccessed = true;
	if (this.metadataSources == null) {
		BootstrapServiceRegistryBuilder builder = new BootstrapServiceRegistryBuilder();
		if (this.resourcePatternResolver != null) {
			builder = builder.applyClassLoader(this.resourcePatternResolver.getClassLoader());
		}
		if (this.hibernateIntegrators != null) {
			for (Integrator integrator : this.hibernateIntegrators) {
				builder = builder.applyIntegrator(integrator);
			}
		}
		this.metadataSources = new MetadataSources(builder.build());
	}
	return this.metadataSources;
}
 

/**
 * Determine the Hibernate {@link MetadataSources} to use.
 * <p>Can also be externally called to initialize and pre-populate a {@link MetadataSources}
 * instance which is then going to be used for {@link SessionFactory} building.
 * @return the MetadataSources to use (never {@code null})
 * @since 4.3
 * @see LocalSessionFactoryBuilder#LocalSessionFactoryBuilder(DataSource, ResourceLoader, MetadataSources)
 */
public MetadataSources getMetadataSources() {
	this.metadataSourcesAccessed = true;
	if (this.metadataSources == null) {
		BootstrapServiceRegistryBuilder builder = new BootstrapServiceRegistryBuilder();
		if (this.resourcePatternResolver != null) {
			builder = builder.applyClassLoader(this.resourcePatternResolver.getClassLoader());
		}
		if (this.hibernateIntegrators != null) {
			for (Integrator integrator : this.hibernateIntegrators) {
				builder = builder.applyIntegrator(integrator);
			}
		}
		this.metadataSources = new MetadataSources(builder.build());
	}
	return this.metadataSources;
}
 

/**
 * Creates the default {@link BootstrapServiceRegistryBuilder}.
 *
 * @param integrator  The integrator to use. Can be null
 * @param classLoader The class loade rto use
 * @return The BootstrapServiceRegistryBuilder
 */
@SuppressWarnings("WeakerAccess")
protected BootstrapServiceRegistryBuilder createBootstrapServiceRegistryBuilder(
        @Nullable Integrator integrator,
        ClassLoader classLoader) {
    BootstrapServiceRegistryBuilder bootstrapServiceRegistryBuilder = new BootstrapServiceRegistryBuilder();
    bootstrapServiceRegistryBuilder.applyClassLoader(classLoader);
    if (integrator != null) {
        bootstrapServiceRegistryBuilder.applyIntegrator(integrator);
    }
    return bootstrapServiceRegistryBuilder;
}
 

/**
 * Determine the Hibernate {@link MetadataSources} to use.
 * <p>Can also be externally called to initialize and pre-populate a {@link MetadataSources}
 * instance which is then going to be used for {@link SessionFactory} building.
 * @return the MetadataSources to use (never {@code null})
 * @since 4.3
 * @see LocalSessionFactoryBuilder#LocalSessionFactoryBuilder(DataSource, ResourceLoader, MetadataSources)
 */
public MetadataSources getMetadataSources() {
	this.metadataSourcesAccessed = true;
	if (this.metadataSources == null) {
		BootstrapServiceRegistryBuilder builder = new BootstrapServiceRegistryBuilder();
		if (this.resourcePatternResolver != null) {
			builder = builder.applyClassLoader(this.resourcePatternResolver.getClassLoader());
		}
		this.metadataSources = new MetadataSources(builder.build());
	}
	return this.metadataSources;
}
 

protected BootstrapServiceRegistry buildBootstrapServiceRegistry() {
  final BootstrapServiceRegistryBuilder builder = new BootstrapServiceRegistryBuilder();
  builder.applyClassLoader( getClass().getClassLoader() );
  prepareBootstrapRegistryBuilder( builder );
  return builder.build();
}