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OPENJPA-462: Adding SQLState in DerbyDictionary to demonstrate specialization 

git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@603028 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Pinaki Poddar 2007-12-10 20:11:22 +00:00
parent a54f842624
commit 38f41d870e
2 changed files with 32 additions and 1 deletions
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6
openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/sql/DBDictionary.java
View File

@ -4033,7 +4033,11 @@ public class DBDictionary
* {@link StoreException}.<br>
* JDBC Drivers are not uniform in return values of SQLState for the same
* error and hence each database specific Dictionary can specialize.<br>
* Default behavior is to return an empty list.
*
*
* @return an <em>unmodifiable</em> list of Strings representing supposedly
* uniform SQL States for a given type of StoreException.
* Default behavior is to return an empty list.
*/
public List/*<String>*/ getSQLStates(int exceptionType) {
if (exceptionType>=0 && exceptionType<SQL_STATE_CODES.length)

27
openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/sql/DerbyDictionary.java
View File

@ -20,9 +20,14 @@ package org.apache.openjpa.jdbc.sql;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javax.sql.DataSource;
import org.apache.openjpa.util.StoreException;
/**
* Dictionary for Apache Derby (formerly Cloudscape).
*/
@ -93,4 +98,26 @@ public class DerbyDictionary
}
}
}
/**
* Adds extra SQLState code that Derby JDBC Driver uses. In JDBC 4.0,
* SQLState will follow either XOPEN or SQL 2003 convention. A compliant
* driver can be queries via DatabaseMetaData.getSQLStateType() to detect
* the convention type.<br>
* This method is overwritten to highlight that a) the SQL State is ideally
* uniform across JDBC Drivers but not practically and b) the overwritten
* method must crate a new list to return as the super classes list is
* unmodifable.
*/
public List getSQLStates(int exceptionType) {
List original = super.getSQLStates(exceptionType);
if (exceptionType == StoreException.LOCK) {
// Can not add new codes to unmodifable list of the super class
List newStates = new ArrayList(original);
newStates.add("40XL1");
return newStates;
}
return original;
}
}