org.apache.tika.batch.fs.FSDocumentSelector Maven / Gradle / Ivy
package org.apache.tika.batch.fs;
/*
* 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.
*/
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.tika.extractor.DocumentSelector;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.util.PropsUtil;
/**
* Selector that chooses files based on their file name
* and their size, as determined by Metadata.RESOURCE_NAME_KEY and Metadata.CONTENT_LENGTH.
*
* The {@link #excludeFileName} pattern is applied first (if it isn't null).
* Then the {@link #includeFileName} pattern is applied (if it isn't null),
* and finally, the size limit is applied if it is above 0.
*/
public class FSDocumentSelector implements DocumentSelector {
//can be null!
private final Pattern includeFileName;
//can be null!
private final Pattern excludeFileName;
private final long maxFileSizeBytes;
private final long minFileSizeBytes;
public FSDocumentSelector(Pattern includeFileName, Pattern excludeFileName, long minFileSizeBytes,
long maxFileSizeBytes) {
this.includeFileName = includeFileName;
this.excludeFileName = excludeFileName;
this.minFileSizeBytes = minFileSizeBytes;
this.maxFileSizeBytes = maxFileSizeBytes;
}
@Override
public boolean select(Metadata metadata) {
String fName = metadata.get(Metadata.RESOURCE_NAME_KEY);
long sz = PropsUtil.getLong(metadata.get(Metadata.CONTENT_LENGTH), -1L);
if (maxFileSizeBytes > -1 && sz > 0) {
if (sz > maxFileSizeBytes) {
return false;
}
}
if (minFileSizeBytes > -1 && sz > 0) {
if (sz < minFileSizeBytes) {
return false;
}
}
if (excludeFileName != null && fName != null) {
Matcher m = excludeFileName.matcher(fName);
if (m.find()) {
return false;
}
}
if (includeFileName != null && fName != null) {
Matcher m = includeFileName.matcher(fName);
return m.find();
}
return true;
}
}