Andrus Adamchik closed CAY-1123.
--------------------------------
Resolution: Fixed
Fix Version/s: 3.0
added UUID to the Modeler as one of the ObjAttribute type choices and added an extendedtype similar ot to the one in the attached patch
> Add UUID support
> ----------------
>
> Key: CAY-1123
> URL: https://issues.apache.org/cayenne/browse/CAY-1123
> Project: Cayenne
> Issue Type: New Feature
> Environment: PostgreSQL
> Reporter: Artyom Sokolov
> Assignee: Andrus Adamchik
> Fix For: 3.0
>
> Attachments: UUIDType.java
>
>
> To work properly with PostgreSQL's UUID columnt type I use next class which extends ExtendedType:
> package sandbox.orm.cayenne;
> import java.sql.CallableStatement;
> import java.sql.PreparedStatement;
> import java.sql.ResultSet;
> import java.sql.Types;
> import java.util.UUID;
> import org.apache.cayenne.CayenneRuntimeException;
> import org.apache.cayenne.access.types.ExtendedType;
> import org.apache.cayenne.map.DbAttribute;
> import org.apache.cayenne.validation.ValidationResult;
> public class UUIDType implements ExtendedType {
> ..verride
> public String getClassName() {
> return UUID.class.getName();
> }
> ..verride
> public Object materializeObject(ResultSet rs, int index, int type)
> throws Exception {
> UUID uuid = null;
> switch (type) {
> case Types.NULL:
> uuid = null;
> break;
> default:
> try {
> uuid = UUID.fromString(rs.getObject(index).toString());
> } catch (IllegalArgumentException e) {
> throw new CayenneRuntimeException(
> "Expected an instance of java.util.UUID, instead got "
> + uuid.getClass().getName()
> + ", column index: " + index);
> }
> }
> return uuid;
> }
> ..verride
> public Object materializeObject(CallableStatement rs, int index, int type)
> throws Exception {
> UUID uuid = null;
> switch (type) {
> case Types.NULL:
> uuid = null;
> break;
> default:
> try {
> uuid = UUID.fromString(rs.getObject(index).toString());
> } catch (IllegalArgumentException e) {
> throw new CayenneRuntimeException(
> "Expected an instance of java.util.UUID, instead got "
> + uuid.getClass().getName()
> + ", column index: " + index);
> }
> }
> return uuid;
> }
> ..verride
> public void setJdbcObject(PreparedStatement statement, Object value,
> int pos, int type, int precision) throws Exception {
> if (value == null) {
> statement.setNull(pos, type);
> } else if (value instanceof UUID) {
> statement.setObject(pos, value);
> } else {
> throw new IllegalArgumentException("Expected java.util.UUID, got "
> + value.getClass().getName());
> }
> }
> ..verride
> public boolean validateProperty(Object source, String property,
> Object value, DbAttribute dbAttribute,
> ValidationResult validationResult) {
> return true;
> }
> }
> Then I register it with Configuration.getSharedConfiguration().getDomain().getNode("MyNode").getAdapter().getExtendedTypes().registerType(new UUIDType());
> Wouldn't it better to have same functionality in Cayenne core?
> Thanks,
> Artyom
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