Examples with AttributeConverterJdbcTypeAdapter org.hibernate.type.descriptor.converter.AttributeConverterJdbcTypeAdapter used on opensource projects

Example 1 with AttributeConverterJdbcTypeAdapter

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

the class SimpleValue method buildAttributeConverterTypeAdapter.

private <T> AttributeConverterTypeAdapter<T> buildAttributeConverterTypeAdapter(JpaAttributeConverter<T, ?> jpaAttributeConverter) {
    JavaType<T> domainJavaType = jpaAttributeConverter.getDomainJavaType();
    JavaType<?> relationalJavaType = jpaAttributeConverter.getRelationalJavaType();
    // build the SqlTypeDescriptor adapter ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    // Going back to the illustration, this should be a SqlTypeDescriptor that handles the Integer <-> String
    // conversions.  This is the more complicated piece.  First we need to determine the JDBC type code
    // corresponding to the AttributeConverter's declared "databaseColumnJavaType" (how we read that value out
    // of ResultSets).  See JdbcTypeJavaClassMappings for details.  Again, given example, this should return
    // VARCHAR/CHAR
    final JdbcType recommendedJdbcType = relationalJavaType.getRecommendedJdbcType(// todo (6.0) : handle the other JdbcRecommendedSqlTypeMappingContext methods
    new JdbcTypeIndicators() {

        @Override
        public TypeConfiguration getTypeConfiguration() {
            return metadata.getTypeConfiguration();
        }

        @Override
        public TimeZoneStorageStrategy getDefaultTimeZoneStorageStrategy() {
            return buildingContext.getBuildingOptions().getDefaultTimeZoneStorage();
        }
    });
    int jdbcTypeCode = recommendedJdbcType.getDefaultSqlTypeCode();
    if (isLob()) {
        if (LobTypeMappings.isMappedToKnownLobCode(jdbcTypeCode)) {
            jdbcTypeCode = LobTypeMappings.getLobCodeTypeMapping(jdbcTypeCode);
        } else {
            if (Serializable.class.isAssignableFrom(domainJavaType.getJavaTypeClass())) {
                jdbcTypeCode = Types.BLOB;
            } else {
                throw new IllegalArgumentException(String.format(Locale.ROOT, "JDBC type-code [%s (%s)] not known to have a corresponding LOB equivalent, and Java type is not Serializable (to use BLOB)", jdbcTypeCode, JdbcTypeNameMapper.getTypeName(jdbcTypeCode)));
            }
        }
    }
    if (isNationalized()) {
        jdbcTypeCode = NationalizedTypeMappings.toNationalizedTypeCode(jdbcTypeCode);
    }
    // todo : cache the AttributeConverterTypeAdapter in case that AttributeConverter is applied multiple times.
    return new AttributeConverterTypeAdapter<>(ConverterDescriptor.TYPE_NAME_PREFIX + jpaAttributeConverter.getConverterJavaType().getJavaType().getTypeName(), String.format("BasicType adapter for AttributeConverter<%s,%s>", domainJavaType.getJavaType().getTypeName(), relationalJavaType.getJavaType().getTypeName()), jpaAttributeConverter, // calls into the binding/extraction process...
    new AttributeConverterJdbcTypeAdapter(jpaAttributeConverter, metadata.getTypeConfiguration().getJdbcTypeRegistry().getDescriptor(jdbcTypeCode), relationalJavaType), relationalJavaType, domainJavaType, null);
}