source: MDService2/branches/MDService_simple3/src/eu/clarin/cmdi/mdservice/model/FCSRepositories.java @ 1907

package eu.clarin.cmdi.mdservice.model;

import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactoryConfigurationError;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

import eu.clarin.cmdi.mdservice.internal.MDTransformer;
import eu.clarin.cmdi.mdservice.internal.Utils;
import eu.clarin.cmdi.mdservice.action.FCSAction;
import eu.clarin.cmdi.mdservice.internal.NoStylesheetException;

/**
 
 */



public class FCSRepositories{   

        private static FCSRepositories singleton;
        private static Document fcsrepositories_document;
        
        public static HashMap<String,String> fcs_mapping;
        
        public FCSRepositories() {
                if (fcsrepositories_document == null){
                        Init();
                }
        }
        
        public static FCSRepositories getFCSRepositories() {
                if (singleton == null) {
                        singleton = new FCSRepositories();
                } 
                return singleton;
        }
        
        public void Init(){
                NodeList ilist, nlist;
                String type = null, name = null, uri = null;
                NodeList fcsnodes, fcsrepositories_nodelist;
                Document fcsdoc;
                Node fcsnode;
                
                Repositories rep = Repositories.getRepositories();
                fcsrepositories_nodelist = (NodeList ) rep.getRepositoriesNodeList();
                nlist = fcsrepositories_nodelist.item(0).getChildNodes();
                
                fcs_mapping = new HashMap<String,String>();
                fcsrepositories_document  = Utils.createDocument("Repositories");
                
                Element keycontainer = fcsrepositories_document.getDocumentElement(); 
        //keycontainer.setAttributeNS(null, "Version", "1.0"); 
                //xmlns:sru="http://www.loc.gov/zing/srw/
        keycontainer.setAttributeNS("http://www.w3.org/2000/xmlns/",
                "xmlns:srw",
                "http://www.loc.gov/zing/srw/");
        keycontainer.setAttributeNS("http://www.w3.org/2000/xmlns/",
                "xmlns:sru",
                "http://www.loc.gov/zing/srw/");

                nlist = fcsrepositories_nodelist.item(0).getChildNodes();
                for(int i=0;i<nlist.getLength();i++){
                        if (nlist.item(i).getNodeName().equals("item")){
                                fcsnode = fcsrepositories_document.adoptNode(nlist.item(i).cloneNode(true));
                                fcsrepositories_document.getChildNodes().item(0).appendChild(fcsnode);
                                
                                ilist  = fcsnode.getChildNodes();
                                for(int j=0;j<ilist.getLength();j++){
                                        if (ilist.item(j).getNodeName().equals("type"))
                                                type = ilist.item(j).getFirstChild().getNodeValue();
                                        if (ilist.item(j).getNodeName().equals("name"))
                                                name = ilist.item(j).getFirstChild().getNodeValue();
                                        if (ilist.item(j).getNodeName().equals("uri"))
                                                uri = ilist.item(j).getFirstChild().getNodeValue();
                                }
                                if (type.equals("fcs.resource")){
                                        fcsdoc = FCSRepositories.getFCSData(name);
                                        addFCS2Repositories(fcsnode, fcsdoc, name);
                                }
                        }
                }
        }
        
        public String getFCSMapping(String context){
                return this.fcs_mapping.get(context);
        }
        
        public void addFCS2Repositories(Node node, Document fcs_doc, String name){
                Node extraTermNode, extraTermNodeAdopted, eNode;
                String ename = null;
                NodeList termsnodelist, termlist;
                
                NodeList elist = fcs_doc.getElementsByTagName("sru:extraTermData");
                for(int i=0;i<elist.getLength();i++){
                        extraTermNode = elist.item(i);
                        eNode = extraTermNode;
                        while (!eNode.getNodeName().equals("sru:value")){
                                eNode = eNode.getPreviousSibling();
                        }
                        if (eNode.getTextContent().equals(name)){
                                extraTermNodeAdopted = fcsrepositories_document.adoptNode(extraTermNode.cloneNode(true));
                                node.appendChild(extraTermNodeAdopted);
                                termsnodelist = extraTermNodeAdopted.getChildNodes().item(1).getChildNodes();
                                for(int k=0;k<termsnodelist.getLength();k++){
                                        termlist = termsnodelist.item(k).getChildNodes();
                                        for(int l=0;l<termlist.getLength();l++){
                                                if (termlist.item(l).getNodeName().equals("sru:value")){
                                                        ename = termlist.item(l).getTextContent();
                                                        this.fcs_mapping.put(ename, name);
                                                }
                                        }
                                }
                        }
                }
        }
        
        public static Document getFCSData(String name){
                
                Document doc;
                
                FCSAction fcsa = new FCSAction();
                fcsa.setActionkey("fcs");
                fcsa.setParam("operation", "scan");
                fcsa.setParam("scanClause", "fcs.resource");
                fcsa.setParam("x-context", name);
                
                try {
                        fcsa.execute();
                        
                        DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
                DocumentBuilder docBuilder;
                        try {
                                docBuilder = docFactory.newDocumentBuilder();               
                                try {
                                                doc = docBuilder.parse(fcsa.getResultStream());
                                                return doc;
                                } catch (SAXException e) {
                                                // TODO Auto-generated catch block
                                                
                                                e.printStackTrace();
                                }
                        } catch (ParserConfigurationException e) {
                                        // TODO Auto-generated catch block
                                        e.printStackTrace();
                        }
                } catch (Exception e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                }
                return null;
                
        }
        
        public InputStream getXMLStream() throws TransformerConfigurationException, TransformerException, TransformerFactoryConfigurationError{
                
                InputStream srustream = null;
                InputStream xmlstream = Utils.document2Stream(fcsrepositories_document.getFirstChild());
                // convert to sru
                MDTransformer transformer = new MDTransformer();
                transformer.configure(Utils.getAppConfig("mdservice"), this.getClass().getClassLoader());
                //transformer.setSrcFile(getTargetRequest());
                transformer.setParams(MDTransformer.createParamsMap("xml2sruscan"));
                try {
                        srustream = transformer.transformXML(xmlstream);
                } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                } catch (NoStylesheetException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                }
                return srustream;
                
        }


        
}