Many bugfixes and improvements

src/zutil/db/handler/SimpleSQLHandler.java

@@ -0,0 +1,27 @@
+package zutil.db.handler;
+
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.sql.ResultSet;
+
+import zutil.db.SQLResultHandler;
+
+/**
+ * Returns the first column of the first row from the query
+ * 
+ * @author Ziver
+ */
+public class SimpleSQLHandler<T> implements SQLResultHandler<T> {
+	/**
+	 * Is called to handle an result from an query.
+	 * 
+	 * @param stmt is the query
+	 * @param result is the ResultSet
+	 */
+	@SuppressWarnings("unchecked")
+	public T handleQueryResult(Statement stmt, ResultSet result) throws SQLException{
+		if( result.next() )
+			return (T) result.getObject(1);
+		return null;
+	}
+}