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https://issues.apache.org/cayenne/browse/CAY-1123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13163#action_13163
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Artyom Sokolov commented on CAY-1123:
-------------------------------------
Ooops. Could anybody edit this issue and delete code stuff? I've already
attached it. I am a bit new to JIRA, so... sorry :)
Thanks,
Artyom
> 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
> 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 {
> @Override
> public String getClassName() {
> return UUID.class.getName();
> }
> @Override
> 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;
> }
> @Override
> 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;
> }
> @Override
> 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());
> }
> }
> @Override
> 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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