Java

Find XML Element where Attribute = Value

See more XML Examples

Finds an XML element at a particular location where an attribute has a specified value. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Xml;

public class ChilkatExample {

    public static void main(String[] args) {
        // We have the following XML and wish to find the value of the time attribute where msg = "alert-from".

        // <cdr id="4e5d3e7f41bf6201ad81000c29703270" e164="6207">
        //     <user>
        //         <grp name="wfln" mode="active"/>
        //     </user>
        //     <event msg="setup-to" time="287069" e164="5034"/>
        //     <event msg="alert-from" time="287069" e164="5034"/>
        //     <event msg="rel-to" time="287079" e164="5034"/>
        // </cdr>

        // First, build the above XML:

        Xml xml = new Xml();
        xml.setTag("cdr");
        xml.addAttribute("id", "4e5d3e7f41bf6201ad81000c29703270");
        xml.addAttribute("e164", "6207");
        xml.updateAttrAt("user|grp", true, "name", "wfln");
        xml.updateAttrAt("user|grp", true, "mode", "active");
        xml.updateAttrAt("event", true, "msg", "setup-to");
        xml.updateAttrAt("event", true, "time", "287069");
        xml.updateAttrAt("event", true, "e164", "5034");
        xml.updateAttrAt("event[1]", true, "msg", "alert-from");
        xml.updateAttrAt("event[1]", true, "time", "287069");
        xml.updateAttrAt("event[1]", true, "e164", "5034");
        xml.updateAttrAt("event[2]", true, "msg", "rel-to");
        xml.updateAttrAt("event[2]", true, "time", "287079");
        xml.updateAttrAt("event[2]", true, "e164", "5034");

        // Show that we have the above XML
        System.out.println(xml.getXml());

        // Find the element where msg = "alert-from"
        // This updates the xml object's reference to the found element (if successful).
        String notUsed;
        try {
            notUsed = xml.chilkatPath("/A/event,msg,alert-from|$");
        } catch (ChilkatException e) {
            System.out.println("Not found.");
            return;
        }

        // Get the value of the "time" attribute.
        System.out.println("time = " + xml.getAttrValue("time"));

        // Restore the xml object's internal reference to the root of the XML document
        xml.getRoot2();
    }
}