JPAOverriddenAnnotationReader.java 文件源码

private JoinTable buildJoinTable(Element tree, XMLContext.Default defaults) {
    Element subelement = tree == null ? null : tree.element( "join-table" );
    final Class<JoinTable> annotationType = JoinTable.class;
    if ( subelement == null ) {
        return null;
    }
    //ignore java annotation, an element is defined
    AnnotationDescriptor annotation = new AnnotationDescriptor( annotationType );
    copyStringAttribute( annotation, subelement, "name", false );
    copyStringAttribute( annotation, subelement, "catalog", false );
    if ( StringHelper.isNotEmpty( defaults.getCatalog() )
            && StringHelper.isEmpty( (String) annotation.valueOf( "catalog" ) ) ) {
        annotation.setValue( "catalog", defaults.getCatalog() );
    }
    copyStringAttribute( annotation, subelement, "schema", false );
    if ( StringHelper.isNotEmpty( defaults.getSchema() )
            && StringHelper.isEmpty( (String) annotation.valueOf( "schema" ) ) ) {
        annotation.setValue( "schema", defaults.getSchema() );
    }
    buildUniqueConstraints( annotation, subelement );
    buildIndex( annotation, subelement );
    annotation.setValue( "joinColumns", getJoinColumns( subelement, false ) );
    annotation.setValue( "inverseJoinColumns", getJoinColumns( subelement, true ) );
    return AnnotationFactory.create( annotation );
}