Makes the XMLA driver return TRANSACTION_NONE to signal the connectio…

…n pools that it doesn't support transaction isolation.

git-svn-id: https://olap4j.svn.sourceforge.net/svnroot/olap4j/trunk@347 c6a108a4-781c-0410-a6c6-c2d559e19af0

src/org/olap4j/driver/xmla/XmlaOlap4jConnection.java

@@ -425,7 +425,7 @@ public void setTransactionIsolation(int level) throws SQLException {
  }
 
  public int getTransactionIsolation() throws SQLException {
- throw new UnsupportedOperationException();
+ return TRANSACTION_NONE;
  }
 
  public SQLWarning getWarnings() throws SQLException {