/**
* @param datatype the db datatype
* @param udtValue the udt value
* @param fieldtype1 the field 1 type
* @param fieldtype2 the field 2 type
* @param fieldname the fieldname
* @return the mapped value or <code>null</code>
*/
public <T> Object fromUdtValue(
DataType datatype,
UDTValue udtValue,
Class<?> fieldtype1,
Class<?> fieldtype2,
String fieldname) {
final CodecRegistry codecRegistry = getCodecRegistry();
// build-in type
if (isBuildInType(datatype)) {
final TypeCodec<T> typeCodec = codecRegistry.codecFor(datatype);
try {
if (udtValue.isNull(fieldname)) return null;
return typeCodec.deserialize(udtValue.getBytesUnsafe(fieldname), protocolVersion);
} catch (IllegalArgumentException ex) {
return null;
}
// udt collection
} else if (datatype.isCollection()) {
// set
if (DataType.Name.SET == datatype.getName()) {
return fromUdtValues(
datatype.getTypeArguments().get(0),
ImmutableSet.copyOf(udtValue.getSet(fieldname, UDTValue.class)),
fieldtype2);
// list
} else if (DataType.Name.LIST == datatype.getName()) {
return fromUdtValues(
datatype.getTypeArguments().get(0),
ImmutableList.copyOf(udtValue.getList(fieldname, UDTValue.class)),
fieldtype2);
// map
} else {
if (isBuildInType(datatype.getTypeArguments().get(0))) {
return fromUdtValues(
datatype.getTypeArguments().get(0),
datatype.getTypeArguments().get(1),
ImmutableMap.<Object, Object>copyOf(
udtValue.getMap(fieldname, fieldtype1, UDTValue.class)),
fieldtype1,
fieldtype2);
} else if (isBuildInType(datatype.getTypeArguments().get(1))) {
return fromUdtValues(
datatype.getTypeArguments().get(0),
datatype.getTypeArguments().get(1),
ImmutableMap.<Object, Object>copyOf(
udtValue.getMap(fieldname, UDTValue.class, fieldtype2)),
fieldtype1,
fieldtype2);
} else {
return fromUdtValues(
datatype.getTypeArguments().get(0),
datatype.getTypeArguments().get(1),
ImmutableMap.<Object, Object>copyOf(
udtValue.getMap(fieldname, UDTValue.class, UDTValue.class)),
fieldtype1,
fieldtype2);
}
}
// udt
} else {
return fromUdtValue(datatype, udtValue, fieldtype1);
}
}
/**
* jwestra: 3.x API change deserialize a single field in a UDTValue map
*
* @param dataType
* @param udtValue
* @param fieldname
* @return
*/
public <T> T deserialize(DataType dataType, UDTValue udtValue, String fieldname) {
final CodecRegistry codecRegistry = getCodecRegistry();
final TypeCodec<T> typeCodec = codecRegistry.codecFor(dataType);
return typeCodec.deserialize(udtValue.getBytesUnsafe(fieldname), protocolVersion);
}