//插入图层元数据

 public  static  boolean  insertLayerMetadata(DataSource ds,String xml,String id)throws SQLException,ClassNotFoundException{

  boolean flag=false;

  String metadataTableName=DBUtil.getLayerMetadataTableName(ds);

  StringBuffer sql = new StringBuffer("INSERT INTO ");

  sql.append(metadataTableName).append("(RECORDID, DATACOL) values(?, ?)");

  try{

     Connection con=DBUtil.getConnection(ds);  

     logger.info("excute sql:"+sql.toString());

     PreparedStatement prest = con.prepareStatement(sql.toString());

     XMLType poXML = XMLType.createXML(con, xml);

     prest.setString(1, id);

     prest.setObject(2, poXML);

     prest.execute();

     flag=true;

  }

  catch(SQLException e){

   flag=false;

   logger.info(e);

   throw new SQLException(e);

  }catch(ClassNotFoundException e){

   flag=false;

   logger.info(e);

         throw new ClassNotFoundException(e.getMessage());

  }

  return flag;

 };

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