/*
* 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.uima.ruta.textruler.extension;
import java.io.File;
import java.io.FilenameFilter;
import org.apache.commons.lang3.StringUtils;
import org.apache.uima.analysis_engine.AnalysisEngine;
import org.apache.uima.analysis_engine.AnalysisEngineDescription;
import org.apache.uima.cas.CAS;
import org.apache.uima.ruta.textruler.TextRulerPlugin;
import org.apache.uima.ruta.textruler.core.GlobalCASSource;
import org.apache.uima.ruta.textruler.core.TextRulerToolkit;
import org.eclipse.core.runtime.Path;
/**
* This "algorithm" gets executed right before the real algorithms get started. It preprocesses the
* input XMI files with the given Ruta preprocessing file and stores the results in a temporary
* folder. Those new XMI files are then passed as input documents to the MLAlgorithms.
*
*/
public class TextRulerPreprocessor {
public String run(String inFolder, String tmFile, String tmpDir, String[] currentSlotNames,
TextRulerPreprocessorDelegate delegate) {
return run(inFolder, "input", tmFile, tmpDir, currentSlotNames, delegate);
}
public String run(String inFolder, String docType, String tmFile, String tmpDir,
String[] currentSlotNames, TextRulerPreprocessorDelegate delegate) {
if(StringUtils.isBlank(inFolder)) {
return inFolder;
}
AnalysisEngineDescription analysisEngineDescription = TextRulerToolkit
.getAnalysisEngineDescription(TextRulerToolkit
.getEngineDescriptorFromTMSourceFile(new Path(tmFile)));
if(analysisEngineDescription == null) {
delegate.preprocessorStatusUpdate(this, "Descriptor is missing. Please rebuild the project.");
return null;
}
// we want to reuse these cases, so extend the type system in case a boundary-based learner is
// called
TextRulerToolkit.addBoundaryTypes(analysisEngineDescription, currentSlotNames);
AnalysisEngine ae = TextRulerToolkit.loadAnalysisEngine(analysisEngineDescription);
// preprocess input XMIs
File inputFolder = new File(inFolder);
File outputFolder = new File(tmpDir + docType);
File[] files = inputFolder.listFiles(new FilenameFilter() {
public boolean accept(File dir, String name) {
return (name.endsWith(".xmi"));
}
});
try {
outputFolder.mkdir();
} catch (Exception e) {
TextRulerPlugin.error(e);
return null;
}
CAS cas = null;
for (File file : files) {
if (delegate != null && delegate.shouldAbort()) {
TextRulerToolkit.log("[PREPROCESSOR] ABORT");
break;
}
TextRulerToolkit.log("Load INPUT XMI file: " + file.getName());
if (delegate != null)
delegate.preprocessorStatusUpdate(this,
"Loading input XMI file (" + docType + "): " + file.getName());
cas = TextRulerToolkit.readCASfromXMIFile(file, ae, cas);
System.out.print("Processing...");
try {
ae.process(cas);
TextRulerToolkit.log(" OK");
TextRulerToolkit.writeCAStoXMIFile(cas, outputFolder + "/processed_" + file.getName());
} catch (Exception e) {
TextRulerPlugin.error(e);
TextRulerToolkit.log(" ERROR!");
}
cas.reset();
if (delegate != null)
delegate.preprocessorStatusUpdate(this, "Done");
}
if (cas != null) {
cas.reset();
GlobalCASSource.releaseCAS(cas);
}
return tmpDir + docType;
}
}