AnnotationBinder.java 文件源码

private static void processId(
        PropertyHolder propertyHolder,
        PropertyData inferredData,
        SimpleValue idValue,
        HashMap<String, IdGenerator> classGenerators,
        boolean isIdentifierMapper,
        Mappings mappings) {
    if ( isIdentifierMapper ) {
        throw new AnnotationException(
                "@IdClass class should not have @Id nor @EmbeddedId properties: "
                        + BinderHelper.getPath( propertyHolder, inferredData )
        );
    }
    XClass returnedClass = inferredData.getClassOrElement();
    XProperty property = inferredData.getProperty();
    //clone classGenerator and override with local values
    HashMap<String, IdGenerator> localGenerators = ( HashMap<String, IdGenerator> ) classGenerators.clone();
    localGenerators.putAll( buildLocalGenerators( property, mappings ) );

    //manage composite related metadata
    //guess if its a component and find id data access (property, field etc)
    final boolean isComponent = returnedClass.isAnnotationPresent( Embeddable.class )
            || property.isAnnotationPresent( EmbeddedId.class );

    GeneratedValue generatedValue = property.getAnnotation( GeneratedValue.class );
    String generatorType = generatedValue != null ?
            generatorType( generatedValue.strategy(), mappings ) :
            "assigned";
    String generatorName = generatedValue != null ?
            generatedValue.generator() :
            BinderHelper.ANNOTATION_STRING_DEFAULT;
    if ( isComponent ) {
        generatorType = "assigned";
    } //a component must not have any generator
    BinderHelper.makeIdGenerator( idValue, generatorType, generatorName, mappings, localGenerators );

    if ( LOG.isTraceEnabled() ) {
        LOG.tracev( "Bind {0} on {1}", ( isComponent ? "@EmbeddedId" : "@Id" ), inferredData.getPropertyName() );
    }
}