/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.nutch.metadata;
import org.apache.hadoop.io.Text;
/**
* A collection of Nutch internal metadata constants.
*
* @author Chris Mattmann
* @author Jérôme Charron
*/
public interface Nutch {
public static final String ORIGINAL_CHAR_ENCODING =
"OriginalCharEncoding";
public static final String CHAR_ENCODING_FOR_CONVERSION =
"CharEncodingForConversion";
public static final String SIGNATURE_KEY = "nutch.content.digest";
public static final String SEGMENT_NAME_KEY = "nutch.segment.name";
public static final String SCORE_KEY = "nutch.crawl.score";
public static final String GENERATE_TIME_KEY = "_ngt_";
public static final Text WRITABLE_GENERATE_TIME_KEY = new Text(GENERATE_TIME_KEY);
public static final String PROTO_STATUS_KEY = "_pst_";
public static final Text WRITABLE_PROTO_STATUS_KEY = new Text(PROTO_STATUS_KEY);
public static final String FETCH_TIME_KEY = "_ftk_";
public static final String FETCH_STATUS_KEY = "_fst_";
/** Sites may request that search engines don't provide access to cached documents. */
public static final String CACHING_FORBIDDEN_KEY = "caching.forbidden";
/** Show both original forbidden content and summaries (default). */
public static final String CACHING_FORBIDDEN_NONE = "none";
/** Don't show either original forbidden content or summaries. */
public static final String CACHING_FORBIDDEN_ALL = "all";
/** Don't show original forbidden content, but show summaries. */
public static final String CACHING_FORBIDDEN_CONTENT = "content";
public static final String REPR_URL_KEY = "_repr_";
public static final Text WRITABLE_REPR_URL_KEY = new Text(REPR_URL_KEY);
}