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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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package org.jgroups.fork;

import org.jgroups.conf.ProtocolConfiguration;
import org.jgroups.conf.XmlConfigurator;
import org.w3c.dom.*;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Parses the fork-stacks.xsd schema. See conf/fork-stacks.xml for an example
 * @author Bela Ban
 * @since  3.4
 */
public class ForkConfig {
    protected static final String FORK_STACKS   = "fork-stacks";
    protected static final String FORK_STACK    = "fork-stack";
    protected static final String ID            = "id";


    /**
     * Parses the input and returns a map of fork-stack IDs and lists of ProtocolConfigurations
     */
    public static Map> parse(InputStream input) throws Exception {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setValidating(false); // for now
        DocumentBuilder builder=factory.newDocumentBuilder();
        Document document=builder.parse(input);
        Element root=document.getDocumentElement();
        return parse(root);
    }

    public static Map> parse(Node root) throws Exception {
        match(FORK_STACKS, root.getNodeName(), true);
        NodeList children=root.getChildNodes();
        if(children == null || children.getLength() == 0)
            return null;

        Map> map=new HashMap<>();
        for(int i=0; i < children.getLength(); i++) {
            Node node=children.item(i);
            if(node.getNodeType() != Node.ELEMENT_NODE)
                continue;
            String element_name=node.getNodeName();
            if(FORK_STACK.equals(element_name))
                parseForkStack(map, node);
            else
                throw new Exception("expected <" + FORK_STACK + ">, but got " + "<" + element_name + ">");
        }

        return map;
    }


    protected static void parseForkStack(final Map> map, Node root) throws Exception {
        NodeList children=root.getChildNodes();
        if(children == null || children.getLength() == 0)
            return;

        NamedNodeMap attributes=root.getAttributes();
        String fork_stack_id=attributes.getNamedItem(ID).getNodeValue();
        if(map.containsKey(fork_stack_id))
            throw new IllegalStateException("duplicate fork-stack ID: \"" + fork_stack_id + "\"");

        for(int i=0; i < children.getLength(); i++) {
            Node node=children.item(i);
            if(node.getNodeType() != Node.ELEMENT_NODE)
                continue;

            List protocols=XmlConfigurator.parseProtocols((Element)node);
            map.put(fork_stack_id, protocols);
        }
    }



    protected static void match(String expected_name, String name, boolean is_element) throws Exception {
        if(!expected_name.equals(name))
            throw new Exception((is_element? "Element " : "Attribute ") + "\"" + name + "\" didn't match \"" + expected_name + "\"");
    }



    public static void main(String[] args) throws Exception {
        InputStream input=new FileInputStream("/home/bela/fork-stacks.xml");
        Map> fork_stacks=parse(input);
        System.out.println("fork_stacks:");
        for(Map.Entry> entry: fork_stacks.entrySet())
            System.out.println(entry.getKey() + ":\n" + entry.getValue() + "\n");

    }
}