dojox.cometd.DataFilter Maven / Gradle / Ivy
// ========================================================================
// Copyright 2007 Dojo Foundation
// ------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//========================================================================
package dojox.cometd;
/* ------------------------------------------------------------ */
/** Data Filter
* Data filters are used to transform data as it is sent to a Channel.
*
*/
public interface DataFilter
{
/**
* @param from
* @param to TODO
* @param data
* @return The filtered data.
* @throws IllegalStateException If the message should be aborted
*/
Object filter(Client from, Channel to, Object data) throws IllegalStateException;
}