<%@ taglib uri="http://jakarta.apache.org/taglibs/xtags-1.0" prefix="xtags" %>
<%@ page import="java.io.*" %>
<%@ page import="java.net.*" %>
<%@ page import="java.util.*" %>
<%@ page import="org.dom4j.*" %>
<%@ page import="org.dom4j.io.*" %>
<%@ page import="org.apache.taglibs.xtags.util.StringHelper" %>
XPath evaluator
This will evaluate an XPath expression on a given document
(which can be any valid URL to an XML document)
and an optional context XPath expression.
The context XPath expression allows an XPath expression to be
applied to a certain part of the document.
<%
String uri = request.getParameter("uri");
if ( uri == null ) {
//uri = "http://p.moreover.com/cgi-local/page?c=Java%20news&o=rss";
uri = "/much_ado.xml";
}
String contextPath = request.getParameter("contextPath");
if ( contextPath == null ) {
contextPath = ".";
}
String path = request.getParameter("path");
if ( path == null ) {
path = "//STAGEDIR";
}
String sortText = request.getParameter("sort");
boolean sort = false;
if ( sortText == null ) {
sortText = "";
}
else {
sort = sortText.equalsIgnoreCase( "true" );
}
String sortPath = request.getParameter("sortPath");
if ( sortPath == null ) {
sortPath = ".";
}
String distinctText = request.getParameter("distinct");
boolean distinct = false;
if ( distinctText == null ) {
distinctText = "";
}
else {
distinct = distinctText.equalsIgnoreCase( "true" );
}
%>
<%
String fullURI = uri;
boolean isFullURL = true;
if ( uri != null && uri.length() > 0 ) {
// if no absolute URL is being used
if ( uri.indexOf( ':' ) < 0 ) {
isFullURL = false;
String root = request.getContextPath();
if ( root != null ) {
fullURI = root + uri;
}
}
String asXmlUrl = "";
if ( path != null && path.length() > 0 ) {
asXmlUrl = "xpath.xml?uri="
+ java.net.URLEncoder.encode(uri)
+ "&path=" + path + "&contextPath=" + contextPath;
if ( sortPath != null ) {
asXmlUrl += "&sortPath=" + sortPath;
}
if ( sort ) {
asXmlUrl += "&sort=true";
}
if ( distinct ) {
asXmlUrl += "&distinct=true";
}
}
%>
Results
<%
System.out.println( "About to parse: " + uri );
if ( isFullURL ) {
%>
<%
}
else {
%>
<%
}
%>
<%
String text = "";
if ( result instanceof String ) {
text = (String) result;
}
else if ( result instanceof Node ) {
Node node = (Node) result;
text = StringHelper.encodeHTML(node.asXML());
}
else if ( result != null ) {
text = result.toString();
}
%>
| <%= text %> |
<%
}
%>