package org.maltparserx.core.flow.system;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.maltparserx.core.exception.MaltChainedException;
import org.maltparserx.core.feature.FeatureException;
import org.maltparserx.core.flow.FlowException;
import org.maltparserx.core.flow.system.elem.ChartElement;
import org.maltparserx.core.helper.URLFinder;
import org.maltparserx.core.plugin.Plugin;
import org.maltparserx.core.plugin.PluginLoader;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
/**
*
*
* @author Johan Hall
*/
public class FlowChartSystem {
private HashMap<String,ChartElement> chartElements;
public FlowChartSystem() {
chartElements = new HashMap<String,ChartElement>();
}
public void load(String urlstring) throws MaltChainedException {
final URLFinder f = new URLFinder();
load(f.findURL(urlstring));
}
public void load(PluginLoader plugins) throws MaltChainedException {
for (Plugin plugin : plugins) {
URL url = null;
try {
url = new URL("jar:"+plugin.getUrl() + "!/appdata/plugin.xml");
} catch (MalformedURLException e) {
throw new FeatureException("Malformed URL: 'jar:"+plugin.getUrl() + "!plugin.xml'", e);
}
try {
InputStream is = url.openStream();
is.close();
} catch (IOException e) {
continue;
}
load(url);
}
}
public void load(URL specModelURL) throws MaltChainedException {
try {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Element root = null;
root = db.parse(specModelURL.openStream()).getDocumentElement();
if (root == null) {
throw new FlowException("The flow chart system file '"+specModelURL.getFile()+"' cannot be found. ");
}
readChartElements(root);
} catch (IOException e) {
throw new FlowException("The flow chart system file '"+specModelURL.getFile()+"' cannot be found. ", e);
} catch (ParserConfigurationException e) {
throw new FlowException("Problem parsing the file "+specModelURL.getFile()+". ", e);
} catch (SAXException e) {
throw new FlowException("Problem parsing the file "+specModelURL.getFile()+". ", e);
}
}
public void readChartElements(Element root) throws MaltChainedException {
NodeList chartElem = root.getElementsByTagName("chartelement");
for (int i = 0; i < chartElem.getLength(); i++) {
ChartElement chartElement = new ChartElement();
chartElement.read((Element)chartElem.item(i), this);
chartElements.put(((Element)chartElem.item(i)).getAttribute("item"),chartElement);
}
}
public ChartElement getChartElement(String name) {
return chartElements.get(name);
}
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("CHART ELEMENTS:\n");
for (String key : chartElements.keySet()) {
sb.append(chartElements.get(key));
sb.append('\n');
}
return sb.toString();
}
}