/*
* Copyright (C) 2012-2015 DataStax Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.datastax.driver.mapping;
import com.datastax.driver.core.CodecRegistry;
import com.datastax.driver.core.ProtocolVersion;
import com.datastax.driver.core.TypeCodec;
import com.datastax.driver.core.UserType;
import java.nio.ByteBuffer;
import java.util.Map;
/**
* Serializes a class annotated with {@code @UDT} to the corresponding CQL user-defined type.
*/
class MappedUDTCodec<T> extends TypeCodec.AbstractUDTCodec<T> {
private final UserType cqlUserType;
private final Class<T> udtClass;
private final Map<String, AliasedMappedProperty<?>> columnMappers;
private final CodecRegistry codecRegistry;
MappedUDTCodec(UserType cqlUserType, Class<T> udtClass, Map<String, AliasedMappedProperty<?>> columnMappers, MappingManager mappingManager) {
super(cqlUserType, udtClass);
this.cqlUserType = cqlUserType;
this.udtClass = udtClass;
this.columnMappers = columnMappers;
this.codecRegistry = mappingManager.getSession().getCluster().getConfiguration().getCodecRegistry();
}
@Override
protected T newInstance() {
return ReflectionUtils.newInstance(udtClass);
}
Class<T> getUdtClass() {
return udtClass;
}
@Override
protected ByteBuffer serializeField(T source, String fieldName, ProtocolVersion protocolVersion) {
@SuppressWarnings("unchecked")
AliasedMappedProperty<Object> aliasedMappedProperty = (AliasedMappedProperty<Object>) columnMappers.get(fieldName);
if (aliasedMappedProperty == null)
return null;
Object value = aliasedMappedProperty.mappedProperty.getValue(source);
TypeCodec<Object> codec = aliasedMappedProperty.mappedProperty.getCustomCodec();
if (codec == null)
codec = codecRegistry.codecFor(cqlUserType.getFieldType(
aliasedMappedProperty.mappedProperty.getMappedName()),
aliasedMappedProperty.mappedProperty.getPropertyType());
return codec.serialize(value, protocolVersion);
}
@Override
protected T deserializeAndSetField(ByteBuffer input, T target, String fieldName, ProtocolVersion protocolVersion) {
@SuppressWarnings("unchecked")
AliasedMappedProperty<Object> aliasedMappedProperty = (AliasedMappedProperty<Object>) columnMappers.get(fieldName);
if (aliasedMappedProperty != null) {
TypeCodec<Object> codec = aliasedMappedProperty.mappedProperty.getCustomCodec();
if (codec == null)
codec = codecRegistry.codecFor(cqlUserType.getFieldType(
aliasedMappedProperty.mappedProperty.getMappedName()),
aliasedMappedProperty.mappedProperty.getPropertyType());
aliasedMappedProperty.mappedProperty.setValue(target, codec.deserialize(input, protocolVersion));
}
return target;
}
@Override
protected String formatField(T source, String fieldName) {
@SuppressWarnings("unchecked")
AliasedMappedProperty<Object> aliasedMappedProperty = (AliasedMappedProperty<Object>) columnMappers.get(fieldName);
if (aliasedMappedProperty == null)
return null;
Object value = aliasedMappedProperty.mappedProperty.getValue(source);
TypeCodec<Object> codec = aliasedMappedProperty.mappedProperty.getCustomCodec();
if (codec == null)
codec = codecRegistry.codecFor(cqlUserType.getFieldType(
aliasedMappedProperty.mappedProperty.getMappedName()),
aliasedMappedProperty.mappedProperty.getPropertyType());
return codec.format(value);
}
@Override
protected T parseAndSetField(String input, T target, String fieldName) {
@SuppressWarnings("unchecked")
AliasedMappedProperty<Object> aliasedMappedProperty = (AliasedMappedProperty<Object>) columnMappers.get(fieldName);
if (aliasedMappedProperty != null) {
TypeCodec<Object> codec = aliasedMappedProperty.mappedProperty.getCustomCodec();
if (codec == null)
codec = codecRegistry.codecFor(cqlUserType.getFieldType(
aliasedMappedProperty.mappedProperty.getMappedName()),
aliasedMappedProperty.mappedProperty.getPropertyType());
aliasedMappedProperty.mappedProperty.setValue(target, codec.parse(input));
}
return target;
}
}