/*
* Copyright 2015
* Ubiquitous Knowledge Processing (UKP) Lab
* Technische Universität Darmstadt
*
* 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 de.tudarmstadt.ukp.dkpro.core.io.lif;
import java.io.OutputStream;
import org.apache.commons.io.IOUtils;
import org.apache.uima.analysis_engine.AnalysisEngineProcessException;
import org.apache.uima.fit.descriptor.ConfigurationParameter;
import org.apache.uima.fit.descriptor.MimeTypeCapability;
import org.apache.uima.fit.descriptor.TypeCapability;
import org.apache.uima.jcas.JCas;
import org.lappsgrid.serialization.Serializer;
import org.lappsgrid.serialization.lif.Container;
import de.tudarmstadt.ukp.dkpro.core.api.io.JCasFileWriter_ImplBase;
import de.tudarmstadt.ukp.dkpro.core.api.parameter.ComponentParameters;
import de.tudarmstadt.ukp.dkpro.core.api.parameter.MimeTypes;
import de.tudarmstadt.ukp.dkpro.core.io.lif.internal.DKPro2Lif;
/**
* Reader for the LIF format.
*/
@MimeTypeCapability({MimeTypes.APPLICATION_X_LIF_JSON})
@TypeCapability(
inputs={
"de.tudarmstadt.ukp.dkpro.core.api.metadata.type.DocumentMetaData",
"de.tudarmstadt.ukp.dkpro.core.api.ner.type.NamedEntity",
"de.tudarmstadt.ukp.dkpro.core.api.segmentation.type.Paragraph",
"de.tudarmstadt.ukp.dkpro.core.api.segmentation.type.Sentence",
"de.tudarmstadt.ukp.dkpro.core.api.segmentation.type.Token",
"de.tudarmstadt.ukp.dkpro.core.api.syntax.type.constituent.Constituent",
"de.tudarmstadt.ukp.dkpro.core.api.syntax.type.dependency.Dependency"})
public class LifWriter
extends JCasFileWriter_ImplBase
{
/**
* Name of configuration parameter that contains the character encoding used by the input files.
*/
public static final String PARAM_ENCODING = ComponentParameters.PARAM_SOURCE_ENCODING;
@ConfigurationParameter(name = PARAM_ENCODING, mandatory = true, defaultValue = "UTF-8")
private String encoding;
/**
* Specify the suffix of output files. Default value <code>.json</code>. If the suffix is not
* needed, provide an empty string as value.
*/
public static final String PARAM_FILENAME_EXTENSION = ComponentParameters.PARAM_FILENAME_EXTENSION;
@ConfigurationParameter(name = PARAM_FILENAME_EXTENSION, mandatory = true, defaultValue = ".json")
private String filenameSuffix;
@Override
public void process(JCas aJCas)
throws AnalysisEngineProcessException
{
// Convert UIMA to LIF Container
Container container = new Container();
new DKPro2Lif().convert(aJCas, container);
try (OutputStream docOS = getOutputStream(aJCas, filenameSuffix)) {
String json = Serializer.toPrettyJson(container);
IOUtils.write(json, docOS, encoding);
}
catch (Exception e) {
throw new AnalysisEngineProcessException(e);
}
}
}