Yes its very possible indeed. The trick is to use XPath variables. e.g.
import org.jaxen.SimpleVariableContext;
SimpleVariableContext variables = new SimpleVariableContext();
XPath xpath = doc.createXPath( "//foo[@doo=$x]" );
xpath.setVariableContext( variables );
Then you can set whatever variable value you want for 'x' and apply the
XPath to any node.
variables.setVariableValue( "x", "abc" );
List answer = xpath.selectNodes( document );
List answer = xpath.selectNodes( someNode );
etc.
James
----- Original Message -----
From: "Christian Holmqvist, IT, Posten" <[EMAIL PROTECTED]>
To: "'dom4j-user'" <[EMAIL PROTECTED]>
Sent: Friday, May 03, 2002 12:01 PM
Subject: [dom4j-user] Can I use XPath expression as prepared statements?
> Hi
>
> Is it possible to use XPath expressions as prepared statements?
>
> Example
> This is what I do now.
>
> public final static String XPATH_EXP = "//foo[@doo=?]";
> ....
> XPath xp = DocumentHelper.createXPath(XPATH_EXP.replace('?','1'));
> The problem with this is that replace only handles char... kind of
> limiting...
>
> I know it is possible to make it more complex.... but...
>
> What I would like to do is to define the XPath as
>
> public final static XPath XPATH_EXP =
> DocumentHelper.createXPath("//foo[@doo=?]");
> ...
> XPATH_EXP.setString(1, "foo");
> XPATH_EXP.selectNodes(doc);
> XPATH_EXP.setString(1, "oof");
> XPATH_EXP.selectNodes(doc);
>
> Is this possible, or have I missed something fundamental?
>
> /Cheers Christian
>
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