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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 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 | package org.maltparser.concurrent;
import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.maltparser.concurrent.graph.ConcurrentDependencyGraph;
import org.maltparser.concurrent.graph.dataformat.DataFormat;
import org.maltparser.core.exception.MaltChainedException;
import org.maltparser.core.feature.FeatureModelManager;
import org.maltparser.core.feature.system.FeatureEngine;
import org.maltparser.core.io.dataformat.DataFormatInstance;
import org.maltparser.core.io.dataformat.DataFormatManager;
import org.maltparser.core.lw.graph.LWDeprojectivizer;
import org.maltparser.core.lw.graph.LWDependencyGraph;
import org.maltparser.core.lw.parser.LWSingleMalt;
import org.maltparser.core.lw.parser.McoModel;
import org.maltparser.core.options.OptionManager;
import org.maltparser.core.plugin.PluginLoader;
import org.maltparser.core.symbol.SymbolTableHandler;
import org.maltparser.core.symbol.hash.HashSymbolTableHandler;
import org.maltparser.core.symbol.parse.ParseSymbolTableHandler;
/**
* A concurrent MaltParser model that can be used to parse sentences in both a single threaded or multi threaded
* environment. To create an object of ConcurrentMaltParserModel use the static methods in ConcurrentMaltParserService.
*
* @author Johan Hall
*
*/
public final class ConcurrentMaltParserModel {
private final DataFormatInstance dataFormatInstance;
private final DataFormat concurrentDataFormat;
private final SymbolTableHandler parentSymbolTableHandler;
private final LWSingleMalt singleMalt;
private final int optionContainer;
private final McoModel mcoModel;
private final int markingStrategy;
private final boolean coveredRoot;
private final String defaultRootLabel;
/**
* This constructor can only be used by ConcurrentMaltParserService
*
* @param _optionContainer a option container index
* @param _mcoURL a URL to a valid MaltParser model file.
* @throws MaltChainedException
*/
protected ConcurrentMaltParserModel(int _optionContainer, URL _mcoURL) throws MaltChainedException {
this.optionContainer = _optionContainer;
this.mcoModel = new McoModel(_mcoURL);
String inputFormatName = OptionManager.instance().getOptionValue(optionContainer, "input", "format").toString().trim();
URL inputFormatURL = null;
try {
inputFormatURL = mcoModel.getMcoEntryURL(inputFormatName);
} catch(IOException e) {
throw new MaltChainedException("Couldn't read file "+inputFormatName+" from mco-file ", e);
}
DataFormatManager dataFormatManager = new DataFormatManager(inputFormatURL, inputFormatURL);
this.parentSymbolTableHandler = new HashSymbolTableHandler();
this.dataFormatInstance = dataFormatManager.getInputDataFormatSpec().createDataFormatInstance(this.parentSymbolTableHandler, OptionManager.instance().getOptionValueString(optionContainer, "singlemalt", "null_value"));
try {
this.parentSymbolTableHandler.load(mcoModel.getInputStreamReader("symboltables.sym", "UTF-8"));
} catch(IOException e) {
throw new MaltChainedException("Couldn't read file symboltables.sym from mco-file ", e);
}
this.defaultRootLabel = OptionManager.instance().getOptionValue(optionContainer, "graph", "root_label").toString().trim();
this.markingStrategy = LWDeprojectivizer.getMarkingStrategyInt(OptionManager.instance().getOptionValue(optionContainer, "pproj", "marking_strategy").toString().trim());
this.coveredRoot = !OptionManager.instance().getOptionValue(optionContainer, "pproj", "covered_root").toString().trim().equalsIgnoreCase("none");
// final PropagationManager propagationManager = loadPropagationManager(this.optionContainer, mcoModel);
final FeatureModelManager featureModelManager = loadFeatureModelManager(this.optionContainer, mcoModel);
this.singleMalt = new LWSingleMalt(this.optionContainer, this.dataFormatInstance, mcoModel, null, featureModelManager);
this.concurrentDataFormat = DataFormat.parseDataFormatXMLfile(inputFormatURL);
}
/**
* Parses an array of tokens and returns a dependency graph.
*
* @param tokens an array of tokens
* @return a dependency graph
* @throws MaltChainedException
*/
public ConcurrentDependencyGraph parse(String[] tokens) throws MaltChainedException {
return new ConcurrentDependencyGraph(concurrentDataFormat, internalParse(tokens), defaultRootLabel);
}
/**
* Same as parse(String[] tokens), but instead it returns an array of tokens with a head index and a dependency type at the end of string
*
* @param tokens an array of tokens to parse
* @return an array of tokens with a head index and a dependency type at the end of string
* @throws MaltChainedException
*/
public String[] parseTokens(String[] tokens) throws MaltChainedException {
LWDependencyGraph outputGraph = internalParse(tokens);
String[] outputTokens = new String[tokens.length];
for (int i = 0; i < outputTokens.length; i++) {
outputTokens[i] = outputGraph.getDependencyNode(i+1).toString();
}
return outputTokens;
}
private LWDependencyGraph internalParse(String[] tokens) throws MaltChainedException {
if (tokens == null || tokens.length == 0) {
throw new MaltChainedException("Nothing to parse. ");
}
LWDependencyGraph parseGraph = new LWDependencyGraph(concurrentDataFormat, new ParseSymbolTableHandler(parentSymbolTableHandler), tokens, defaultRootLabel, false);
singleMalt.parse(parseGraph);
if (markingStrategy != 0 || coveredRoot) {
new LWDeprojectivizer().deprojectivize(parseGraph, markingStrategy);
}
return parseGraph;
}
public List<String[]> parseSentences(List<String[]> inputSentences) throws MaltChainedException {
return singleMalt.parseSentences(inputSentences, defaultRootLabel, markingStrategy, coveredRoot, parentSymbolTableHandler, concurrentDataFormat);
// List<String[]> outputSentences = Collections.synchronizedList(new ArrayList<String[]>());;
// for (int i = 0; i < inputSentences.size(); i++) {
// String[] tokens = inputSentences.get(i);
// // TODO nothing to parse
// LWDependencyGraph parseGraph = new LWDependencyGraph(concurrentDataFormat, new ParseSymbolTableHandler(parentSymbolTableHandler), tokens, defaultRootLabel, false);
// singleMalt.parse(parseGraph);
// if (markingStrategy != 0 || coveredRoot) {
// new LWDeprojectivizer().deprojectivize(parseGraph, markingStrategy);
// }
// String[] outputTokens = new String[tokens.length];
// for (int j = 0; j < outputTokens.length; j++) {
// outputTokens[i] = parseGraph.getDependencyNode(j+1).toString();
// }
// outputSentences.add(outputTokens);
// }
// return outputSentences;
}
// private PropagationManager loadPropagationManager(int optionContainer, McoModel mcoModel) throws MaltChainedException {
// String propagationSpecFileName = OptionManager.instance().getOptionValue(optionContainer, "singlemalt", "propagation").toString();
// PropagationManager propagationManager = null;
// if (propagationSpecFileName != null && propagationSpecFileName.length() > 0) {
// propagationManager = new PropagationManager();
// try {
// propagationManager.loadSpecification(mcoModel.getMcoEntryURL(propagationSpecFileName));
// } catch(IOException e) {
// throw new MaltChainedException("Couldn't read file "+propagationSpecFileName+" from mco-file ", e);
// }
// }
// return propagationManager;
// }
private FeatureModelManager loadFeatureModelManager(int optionContainer, McoModel mcoModel) throws MaltChainedException {
final FeatureEngine system = new FeatureEngine();
system.load("/appdata/features/ParserFeatureSystem.xml");
system.load(PluginLoader.instance());
FeatureModelManager featureModelManager = new FeatureModelManager(system);
String featureModelFileName = OptionManager.instance().getOptionValue(optionContainer, "guide", "features").toString().trim();
try {
if (featureModelFileName.endsWith(".par")) {
String markingStrategy = OptionManager.instance().getOptionValue(optionContainer, "pproj", "marking_strategy").toString().trim();
String coveredRoot = OptionManager.instance().getOptionValue(optionContainer, "pproj", "covered_root").toString().trim();
featureModelManager.loadParSpecification(mcoModel.getMcoEntryURL(featureModelFileName), markingStrategy, coveredRoot);
} else {
featureModelManager.loadSpecification(mcoModel.getMcoEntryURL(featureModelFileName));
}
} catch(IOException e) {
throw new MaltChainedException("Couldn't read file "+featureModelFileName+" from mco-file ", e);
}
return featureModelManager;
}
}
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