java/classes/org/w3c/rdf/examples/ARPServlet.java - diff

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Diff for /java/classes/org/w3c/rdf/examples/ARPServlet.java between versions 1.13 and 1.14

version 1.13, 2001/09/19 20:41:34	version 1.14, 2001/09/24 17:01:04
Line 70 import java.net.MalformedURLException;	Line 70 import java.net.MalformedURLException;
import java.net.URL;	import java.net.URL;
import java.util.StringTokenizer;	import java.util.StringTokenizer;
import java.util.Enumeration;	import java.util.Enumeration;
	import java.util.Hashtable;
import javax.servlet.*;	import javax.servlet.*;
import javax.servlet.http.*;	import javax.servlet.http.*;

Line 179 public class ARPServlet extends HttpServ	Line 180 public class ARPServlet extends HttpServ
// Name for the DOT file title	// Name for the DOT file title
private static final String DOT_TITLE = "dotfile";	private static final String DOT_TITLE = "dotfile";

	// The string to use for to prefix anonymous nodes.
	private static final String ANON_NODE = "genid:";

// The string to use for a namespace name when no	// The string to use for a namespace name when no
// namespace is available - e.g. for the RDF that is	// namespace is available - e.g. for the RDF that is
// directly entered into the input form.	// directly entered into the input form.
private static final String DEFAULT_NAMESPACE = "genid:";	private static final String DEFAULT_NAMESPACE = "online:";

/*	/*
* Create a File object in the m_ServletTmpDir directory	* Create a File object from the given directory and file names
*	*
*@param directory the file's directory	*@param directory the file's directory
*@param prefix the file's prefix name (not its directory)	*@param prefix the file's prefix name (not its directory)
Line 249 public class ARPServlet extends HttpServ	Line 253 public class ARPServlet extends HttpServ
* This is only done if the servlet is explictly asked to save	* This is only done if the servlet is explictly asked to save
* the RDF to a file.	* the RDF to a file.
*	*
*@param dir the file's directory	*@param tmpDir the file's directory
*@param rdf the string of RDF	*@param rdf the string of RDF
*/	*/
private void copyRDFStringToFile(String tmpDir, String rdf)	private void copyRDFStringToFile(String tmpDir, String rdf)
Line 308 public class ARPServlet extends HttpServ	Line 312 public class ARPServlet extends HttpServ
*	*
*@param dotFileName the name of the DOT data file	*@param dotFileName the name of the DOT data file
*@param outputFileName the name of the output data file	*@param outputFileName the name of the output data file
	*@param graphFormat the graph's format
*@return true if success; false if any failure occurs	*@return true if success; false if any failure occurs
*/	*/
private boolean generateGraphFile(String dotFileName,	private boolean generateGraphFile(String dotFileName,
Line 336 public class ARPServlet extends HttpServ	Line 341 public class ARPServlet extends HttpServ
* value.	* value.
*	*
*@param req a Servlet request	*@param req a Servlet request
	*@param param the name of the parameter
	*@param defString the string returned if the param is not found
*@return if the request contains the specfied parameter its value	*@return if the request contains the specfied parameter its value
* in the request is returned; otherwise its default value is	* in the request is returned; otherwise its default value is
* returned	* returned
Line 352 public class ARPServlet extends HttpServ	Line 359 public class ARPServlet extends HttpServ
* to the graph consumer for handling	* to the graph consumer for handling
*	*
*@param req the response	*@param req the response
	*@param pw the PrintWriter
*@param consumer the GraphViz consumer	*@param consumer the GraphViz consumer
*/	*/
private void processGraphParameters (HttpServletRequest req, PrintWriter pw)	private void processGraphParameters (HttpServletRequest req, PrintWriter pw)
{	{
// Print the graph header	// Print the graph header
pw.println("digraph " + DOT_TITLE + "{ " );	pw.println("digraph " + DOT_TITLE + "{ " );
Line 646 public class ARPServlet extends HttpServ	Line 654 public class ARPServlet extends HttpServ
*	*
*@param out the servlet's output stream	*@param out the servlet's output stream
*@param rdf the RDF code	*@param rdf the RDF code
	*@param needCR if true, add a CarriageReturn to the output; if false,
	* do not add it
*/	*/
private void printListing (ServletOutputStream out, String rdf,	private void printListing (ServletOutputStream out, String rdf,
boolean needCR)	boolean needCR)
Line 685 public class ARPServlet extends HttpServ	Line 695 public class ARPServlet extends HttpServ
* Print the header for the triple listing	* Print the header for the triple listing
*	*
*@param out the servlet's output stream	*@param out the servlet's output stream
	*@param nTriples if true, output is N-Triples syntax
*/	*/
private void printTripleTableHeader (ServletOutputStream out, boolean nTriples)	private void printTripleTableHeader (ServletOutputStream out, boolean nTriples)
{	{
Line 713 public class ARPServlet extends HttpServ	Line 724 public class ARPServlet extends HttpServ
* Print the footer info for the triple listing	* Print the footer info for the triple listing
*	*
*@param out the servlet's output stream	*@param out the servlet's output stream
	*@param nTriples if true, output is N-Triples syntax
*/	*/
private void printTripleTableFooter (ServletOutputStream out,	private void printTripleTableFooter (ServletOutputStream out,
boolean nTriples)	boolean nTriples)
Line 953 public class ARPServlet extends HttpServ	Line 965 public class ARPServlet extends HttpServ
* Create a HTML anchor from the URI or anonNode of the	* Create a HTML anchor from the URI or anonNode of the
* given Resource	* given Resource
*	*
*@param s the string	*@param r the Resource
*@return the string as an HTML anchor	*@return the string as an HTML anchor
*/	*/
static private String addAnchor(AResource r)	static private String addAnchor(AResource r)
{	{
if (r.isAnonymous())	if (r.isAnonymous())
return DEFAULT_NAMESPACE + r.getAnonymousID();	return ANON_NODE + r.getAnonymousID();
else	else
return "<a href='" + r.getURI() + "'>" + r.getURI() + "</a>";	return "<a href='" + r.getURI() + "'>" + r.getURI() + "</a>";
}	}
Line 1005 public class ARPServlet extends HttpServ	Line 1017 public class ARPServlet extends HttpServ
boolean printTriples;	boolean printTriples;
boolean printGraph;	boolean printGraph;
boolean anonNodesEmpty;	boolean anonNodesEmpty;
int numStatements = 0;	int numStatements;
int numLiterals = 0;	int numLiterals;
	Hashtable subjects;
	int numSubjects;

/*	/*
* Constructuor for the StatementHandler. The primary	* Constructuor for the StatementHandler. The primary
Line 1029 public class ARPServlet extends HttpServ	Line 1043 public class ARPServlet extends HttpServ
this.printTriples = printTriples;	this.printTriples = printTriples;
this.printGraph = printGraph;	this.printGraph = printGraph;
this.anonNodesEmpty = anonNodesEmpty;	this.anonNodesEmpty = anonNodesEmpty;

	this.numStatements = 0;
	this.numLiterals = 0;

	this.subjects = new Hashtable();
	this.numSubjects = 0;
}	}

/*	/*
Line 1110 public class ARPServlet extends HttpServ	Line 1130 public class ARPServlet extends HttpServ
*/	*/
public void printFirstPart(AResource subj)	public void printFirstPart(AResource subj)
{	{
if (subj.isAnonymous()) {	if (subj.isAnonymous()) {
if (this.anonNodesEmpty) {	if (this.anonNodesEmpty) {
this.pw.println("\"" + DEFAULT_NAMESPACE +	Integer n = (Integer) subjects.get(subj.getAnonymousID());
subj.getAnonymousID() + "\" [label=\" \"];");	if (n == null) {
	this.numSubjects++;
	subjects.put(subj.getAnonymousID(), new Integer(this.numSubjects));
	this.pw.println("\"" + ANON_NODE +
	subj.getAnonymousID() + "\" [label=\" \"];");
	}
}	}
this.pw.print("\"" + DEFAULT_NAMESPACE + subj.getAnonymousID());	this.pw.print("\"" + ANON_NODE + subj.getAnonymousID());
} else {	} else {
this.pw.println("\"" + subj.getURI() + "\" [URL=\"" +	this.pw.println("\"" + subj.getURI() + "\" [URL=\"" +
subj.getURI() + "\"];");	subj.getURI() + "\"];");
Line 1123 public class ARPServlet extends HttpServ	Line 1148 public class ARPServlet extends HttpServ
}	}
}	}

/*
* Print the second part of a triple's Dot file. See below for
* more info. This is the same regardless if the triple's
* object is a Resource or a Literal
*
*@param pred the subject
*/
public void printSecondPart(AResource pred)
{
if (pred.isAnonymous()) {
// Anonymous predicates? Nothing in the M&S spec
// prohibits them so handle it just in case ...
if (this.anonNodesEmpty) {
this.pw.println("\"" + DEFAULT_NAMESPACE +
pred.getAnonymousID() + "\" [label=\" \"];");
} else {
this.pw.println("\" [label=\"" + DEFAULT_NAMESPACE +
pred.getAnonymousID() + "\"];");
}
} else {
this.pw.println("\" [label=\"" + pred.getURI() + "\",URL=\"" +
pred.getURI() + "\"];");
}
}

/*	/*
* Handler for a Resource/Resource/Resource triple (S/P/O).	* Handler for a Resource/Resource/Resource triple (S/P/O).
* Outputs the given triple using Dot syntax.	* Outputs the given triple using Dot syntax.
Line 1175 public class ARPServlet extends HttpServ	Line 1175 public class ARPServlet extends HttpServ

if (obj.isAnonymous()) {	if (obj.isAnonymous()) {
if (this.anonNodesEmpty) {	if (this.anonNodesEmpty) {
this.pw.println("\"" + DEFAULT_NAMESPACE +	this.pw.println("\"" + ANON_NODE +
obj.getAnonymousID() + "\" [label=\" \"];");	obj.getAnonymousID() + "\" [label=\" \"];");
} else {	} else {
this.pw.print("\"" + DEFAULT_NAMESPACE + obj.getAnonymousID());	this.pw.println("\"" + ANON_NODE + obj.getAnonymousID() + "\";");
}	}
} else {	} else {
this.pw.print("\"" + obj.getURI());	this.pw.println("\"" + obj.getURI() + "\" [label=\"" +
}	pred.getURI() + "\",URL=\"" + pred.getURI() + "\"];");

printSecondPart(pred);

if (obj.isAnonymous()) {
if (this.anonNodesEmpty) {
this.pw.println("\"" + DEFAULT_NAMESPACE +
obj.getAnonymousID() + "\" [label=\" \"];");
} else {
this.pw.println("\"" + DEFAULT_NAMESPACE +
obj.getAnonymousID() + "\";");
}
} else {
this.pw.println("\"" + obj.getURI() + "\" [URL=\"" +	this.pw.println("\"" + obj.getURI() + "\" [URL=\"" +
obj.getURI() + "\"];");	obj.getURI() + "\"];");
}	}
}	}

/*	/*
Line 1251 public class ARPServlet extends HttpServ	Line 1239 public class ARPServlet extends HttpServ
String tmpName = "Literal_" + Integer.toString(this.numLiterals);	String tmpName = "Literal_" + Integer.toString(this.numLiterals);
this.pw.print("\" -> \"" + tmpName);	this.pw.print("\" -> \"" + tmpName);

printSecondPart(pred);	this.pw.println("\" [label=\"" + pred.getURI() +
	"\",URL=\"" + pred.getURI() + "\"];");

this.pw.println("\"" + tmpName + "\" [shape=box,label=\"" + tmpObject + "\"];");	this.pw.println("\"" + tmpName + "\" [shape=box,label=\"" + tmpObject + "\"];");
}	}

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Removed from v.1.13
changed lines
	Added in v.1.14