Metacat

package edu.ucsb.nceas.metacat;

import java.net.MalformedURLException;

public class metacatURL

{

  private String[][] params = new String[200][2];

  private String urlType = null;

  private String url;

  /**

    int urlTypeIndex = url.indexOf("://"); //anything before this is the urltype

    this.urlType = url.substring(0, urlTypeIndex);

    if(this.urlType.equals("http"))

    {//if this is an http url

      params[0][0] = "httpurl";

      params[0][1] = url.substring(0, url.length());

      for(int i=url.length()-1; i>0; i--)

      {

        if(url.charAt(i) == '/')

      }

      params[1][0] = "filename";

      params[1][1] = temp;

    }

    else

    {//other urls that meet the metacat type url structure.

      { //go throught the remainder of the url one character at a time.

        { //if the current char is a # then the preceding should be a parametet

          //name

          if(!poundflag && ampflag)

        { //the text preceding the & should be the param value.

          if(i == url.length() - 1)

          { //if we are at the end of the string grab the last value and append it.

            { //ignore an extra & on the end of the string

              temp += url.charAt(i);

            }

          if(!ampflag && poundflag)

          {

            params[arrcount][1] = temp.trim();

            temp = "";

            arrcount++; //increment the array to the next row.

          }

    return this.params;

  }

  /**

   * returns a string representation of this metacatURL

   */

  public String toString()

    return this.url;

  }

  /**

   * Prints the parameters neatly to system.out

   */

   */

  public static void main(String args[])

  {

    try

    {

      metacatURL murl = new metacatURL(testurl);

      String[][] p = null;

      System.out.println("url type: " + murl.getURLType());

      System.out.println("parameters: ");

      p = murl.getParams();

    }

    catch(MalformedURLException murle)

    {

          if(returndocVec.size() != 0 && !returndocVec.contains(doctype))

          { //there are returndocs to match (backtracking can now be performed). 

            StringBuffer btBuf = new StringBuffer();

            btBuf.append("select object from xml_relation where ");

            btBuf.append("objdoctype in (");

            }

            btBuf.append(") ");

            btBuf.append("and subject like '");

            pstmt = conn.prepareStatement(btBuf.toString());

            pstmt.execute();

            ResultSet btrs = pstmt.getResultSet();

            if(hasBtRows)

            { //there was a backtrackable document found

              DocumentImpl xmldoc = null;

              metacatURL objURL = new metacatURL(btrs.getString(1));

              try

              {

        Enumeration docidkeys = docListResult.keys();

        while(docidkeys.hasMoreElements())

        {

          String docidkey = (String)docidkeys.nextElement();

          pstmt = conn.prepareStatement(

          pstmt.execute();

          rs = pstmt.getResultSet();

          tableHasRows = rs.next();

/**

 * '$Log$

 * 'Revision 1.20  2000/09/15 19:52:11  berkley

 * 'Added functionality for package specifications.  metacatservlet now contains a new action called getrelateddocument that handles retrieving related documents using the metacatURL specification (metacatURL.java).  DBQuery contains new code in runQuery that embeds relation tags in the returned hashtable describing the documents related to each docid.  querySpecification contains a new method which prints the sql that does the relation query.

 * '

        metacatURL murl = new metacatURL(((String[])params.get("url"))[0]);

        if(murl.getURLType().equals("metacat"))

        {//get the document from the database if it is the right type of url

          {//the docid should be first

            conn = util.getConnection();

            xmldoc = new DocumentImpl(conn, docid);

            //the style sheet handling code needs to be put here. 

            out.println(xmldoc.toString());

            //**************************************************

          }

          else

          {

        }

        else if(murl.getURLType().equals("http"))

        {//get the document from the internet

          {//httpurl is the param name for an http url.

            //DataInputStream htmldoc = new DataInputStream(urlconn.openStream());

            BufferedReader htmldoc = new BufferedReader(

                                   new InputStreamReader(urlconn.openStream()));

      if(murl.getURLType().equals("metacat"))

      {

        //get the document from the database

        bytestring = (xmldoc.toString()).getBytes();

        //create a new zip entry and write the file to the stream

        zentry.setSize(bytestring.length);

        zout.putNextEntry(zentry);

      }

      else if(murl.getURLType().equals("http"))

      {

        {//httpurl is the param name for an http url.

          BufferedReader htmldoc = new BufferedReader(

                                   new InputStreamReader(urlconn.openStream()));

          //get the data from the web server

          try

          { //zip the document

            String line=null;

            //get just the filename from the URL.

            zout.putNextEntry(zentry);

            //make a new entry in the zip file stream