Examples with ValueExtractor org.hibernate.type.descriptor.ValueExtractor used on opensource projects

Example 1 with ValueExtractor

use of org.hibernate.type.descriptor.ValueExtractor in project hibernate-orm by hibernate.

the class AttributeConverterSqlTypeDescriptorAdapter method getExtractor.

// Extraction ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@Override
public <X> ValueExtractor<X> getExtractor(JavaTypeDescriptor<X> javaTypeDescriptor) {
    // Get the extractor for the intermediate type representation
    final ValueExtractor realExtractor = delegate.getExtractor(intermediateJavaTypeDescriptor);
    return new ValueExtractor<X>() {

        @Override
        public X extract(ResultSet rs, String name, WrapperOptions options) throws SQLException {
            return doConversion(realExtractor.extract(rs, name, options));
        }

        @Override
        public X extract(CallableStatement statement, int index, WrapperOptions options) throws SQLException {
            return doConversion(realExtractor.extract(statement, index, options));
        }

        @Override
        public X extract(CallableStatement statement, String[] paramNames, WrapperOptions options) throws SQLException {
            if (paramNames.length > 1) {
                throw new IllegalArgumentException("Basic value extraction cannot handle multiple output parameters");
            }
            return doConversion(realExtractor.extract(statement, paramNames, options));
        }

        @SuppressWarnings("unchecked")
        private X doConversion(Object extractedValue) {
            try {
                X convertedValue = (X) converter.convertToEntityAttribute(extractedValue);
                log.debugf("Converted value on extraction: %s -> %s", extractedValue, convertedValue);
                return convertedValue;
            } catch (PersistenceException pe) {
                throw pe;
            } catch (RuntimeException re) {
                throw new PersistenceException("Error attempting to apply AttributeConverter", re);
            }
        }
    };
}