File size: 2,735 Bytes
6f3ebfa | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | package org.maltparser.concurrent;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import org.maltparser.core.exception.MaltChainedException;
import org.maltparser.core.lw.helper.Utils;
import org.maltparser.core.options.OptionManager;
/**
* The purpose of ConcurrentMaltParserService is to provide an interface to MaltParser that makes it easier to parse sentences from
* other programs. ConcurrentMaltParserService is hopefully thread-safe and can be used in a multi threaded environment. This class
* replace the old interface org.maltparser.MaltParserService when you want to load a MaltParser model and then use it
* to parse sentences in both a single threaded or multi threaded application.
*
* How to use ConcurrentMaltParserService, please see the examples provided in the directory 'examples/apiexamples/srcex'
*
* @author Johan Hall
*/
public final class ConcurrentMaltParserService {
private static int optionContainerCounter = 0;
private static synchronized int getNextOptionContainerCounter() {
return optionContainerCounter++;
}
private static synchronized void loadOptions() throws MaltChainedException {
if (!OptionManager.instance().hasOptions()) {
OptionManager.instance().loadOptionDescriptionFile();
OptionManager.instance().generateMaps();
}
}
/**
* Initialize a MaltParser model from a MaltParser model file (.mco)
*
* @param mcoFile File object containing the path to a valid MaltParser model file. Usually the file extension is ".mco"
* @return MaltParser model
* @throws MaltChainedException
* @throws MalformedURLException
*/
public static ConcurrentMaltParserModel initializeParserModel(File mcoFile) throws MaltChainedException, MalformedURLException {
return initializeParserModel(mcoFile.toURI().toURL());
}
/**
* Initialize a MaltParser model from a MaltParser model file (.mco)
*
* @param mcoURL URL to a valid MaltParser model file. Usually the file extension is ".mco"
* @return a concurrent MaltParser model
* @throws MaltChainedException
*/
public static ConcurrentMaltParserModel initializeParserModel(URL mcoURL) throws MaltChainedException {
loadOptions();
int optionContainer = getNextOptionContainerCounter();
String parserModelName = Utils.getInternalParserModelName(mcoURL);
OptionManager.instance().parseCommandLine("-m parse", optionContainer);
OptionManager.instance().loadOptions(optionContainer, Utils.getInputStreamReaderFromConfigFileEntry(mcoURL, parserModelName, "savedoptions.sop", "UTF-8"));
return new ConcurrentMaltParserModel(optionContainer, mcoURL);
}
}
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