import org.hibernate.annotations.MapKeyType; //导入依赖的package包/类
public void prepare(XProperty collectionProperty) {
	// fugly
	if ( prepared ) {
		return;
	}

	if ( collectionProperty == null ) {
		return;
	}

	prepared = true;

	if ( collection.isMap() ) {
		if ( collectionProperty.isAnnotationPresent( MapKeyEnumerated.class ) ) {
			canKeyBeConverted = false;
		}
		else if ( collectionProperty.isAnnotationPresent( MapKeyTemporal.class ) ) {
			canKeyBeConverted = false;
		}
		else if ( collectionProperty.isAnnotationPresent( MapKeyClass.class ) ) {
			canKeyBeConverted = false;
		}
		else if ( collectionProperty.isAnnotationPresent( MapKeyType.class ) ) {
			canKeyBeConverted = false;
		}
	}
	else {
		canKeyBeConverted = false;
	}

	if ( collectionProperty.isAnnotationPresent( ManyToAny.class ) ) {
		canElementBeConverted = false;
	}
	else if ( collectionProperty.isAnnotationPresent( OneToMany.class ) ) {
		canElementBeConverted = false;
	}
	else if ( collectionProperty.isAnnotationPresent( ManyToMany.class ) ) {
		canElementBeConverted = false;
	}
	else if ( collectionProperty.isAnnotationPresent( Enumerated.class ) ) {
		canElementBeConverted = false;
	}
	else if ( collectionProperty.isAnnotationPresent( Temporal.class ) ) {
		canElementBeConverted = false;
	}
	else if ( collectionProperty.isAnnotationPresent( CollectionType.class ) ) {
		canElementBeConverted = false;
	}

	// Is it valid to reference a collection attribute in a @Convert attached to the owner (entity) by path?
	// if so we should pass in 'clazzToProcess' also
	if ( canKeyBeConverted || canElementBeConverted ) {
		buildAttributeConversionInfoMaps( collectionProperty, elementAttributeConversionInfoMap, keyAttributeConversionInfoMap );
	}
}