DocumentTypeByParameter.java

//Dstl (c) Crown Copyright 2017
package uk.gov.dstl.baleen.annotators.misc;

import java.util.Collections;

import org.apache.uima.analysis_engine.AnalysisEngineProcessException;
import org.apache.uima.fit.descriptor.ConfigurationParameter;
import org.apache.uima.jcas.JCas;
import org.apache.uima.jcas.tcas.DocumentAnnotation;

import com.google.common.base.Strings;
import com.google.common.collect.ImmutableSet;

import uk.gov.dstl.baleen.core.pipelines.orderers.AnalysisEngineAction;
import uk.gov.dstl.baleen.uima.BaleenAnnotator;

/**
 * Sets the document type based on a user provided parameter
 * 
 * 
 * @baleen.javadoc
 */
public class DocumentTypeByParameter extends BaleenAnnotator {
	/**
	 * The value to set the document type to
	 * 
	 * @baleen.config
	 */
	public static final String PARAM_TYPE = "type";
	@ConfigurationParameter(name = PARAM_TYPE, defaultValue="")
	private String type;
	
	@Override
	protected void doProcess(JCas jCas) throws AnalysisEngineProcessException {
		if(!Strings.isNullOrEmpty(type)){
			getDocumentAnnotation(jCas).setDocType(type);
		}
	}
	
	@Override
	public AnalysisEngineAction getAction() {
		return new AnalysisEngineAction(Collections.emptySet(), ImmutableSet.of(DocumentAnnotation.class));
	}

}