/*
* Copyright 2009-2013 Scale Unlimited
*
* 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 com.scaleunlimited.helpful.pipes;
import cascading.pipe.Each;
import cascading.pipe.Pipe;
import cascading.pipe.SubAssembly;
import com.scaleunlimited.helpful.operations.ParseModMboxPageFunction;
@SuppressWarnings("serial")
public class ModMboxPipe extends SubAssembly {
public ModMboxPipe(Pipe fetchedDatumProvider) {
Pipe parsePipe = new Pipe("mod_mbox page parser", fetchedDatumProvider);
// The fetchedDatumProvider will pass us a stream of FetchedDatum tuples. For each,
// we want to parse the HTML and extract the actual mbox file URLs, which we'll
// pass on as UrlDatum tuples.
parsePipe = new Each(parsePipe, new ParseModMboxPageFunction());
setTails(parsePipe);
}
}