private boolean isString(int type) {
      switch (type) {
         case java.sql.Types.CHAR:
         case java.sql.Types.VARCHAR:
         case java.sql.Types.LONGVARCHAR:
            return true;
         default:
            return false;
      }
   }
Indicates whether the given SQL data type is a string type.

@param type one of the constants from <code>java.sql.Types</code>
@return <code>true</code> if the given type is <code>CHAR</code>,'
        <code>VARCHAR</code>, or <code>LONGVARCHAR</code>;
        <code>false</code> otherwise
src/main/java/org/replicadb/rowset/StreamingRowSetImpl.java