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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS 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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/**
 * Copyright (c) 2004-2011 QOS.ch
 * All rights reserved.
 *
 * Permission is hereby granted, free  of charge, to any person obtaining
 * a  copy  of this  software  and  associated  documentation files  (the
 * "Software"), to  deal in  the Software without  restriction, including
 * without limitation  the rights to  use, copy, modify,  merge, publish,
 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
 * permit persons to whom the Software  is furnished to do so, subject to
 * the following conditions:
 *
 * The  above  copyright  notice  and  this permission  notice  shall  be
 * included in all copies or substantial portions of the Software.
 *
 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */
package org.slf4j.helpers;

import java.util.Iterator;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;

import org.slf4j.Marker;

/**
 * A simple implementation of the {@link Marker} interface.
 * 
 * @author Ceki Gülcü
 * @author Joern Huxhorn
 */
public class BasicMarker implements Marker {

    private static final long serialVersionUID = -2849567615646933777L;
    private final String name;
    private final List referenceList = new CopyOnWriteArrayList<>();

    BasicMarker(String name) {
        if (name == null) {
            throw new IllegalArgumentException("A marker name cannot be null");
        }
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void add(Marker reference) {
        if (reference == null) {
            throw new IllegalArgumentException("A null value cannot be added to a Marker as reference.");
        }

        // no point in adding the reference multiple times
        if (this.contains(reference)) {
            return;

        } else if (reference.contains(this)) { // avoid recursion
            // a potential reference should not hold its future "parent" as a reference
            return;
        } else {
            referenceList.add(reference);
        }
    }

    public boolean hasReferences() {
        return (referenceList.size() > 0);
    }

    @Deprecated
    public boolean hasChildren() {
        return hasReferences();
    }

    public Iterator iterator() {
        return referenceList.iterator();
    }

    public boolean remove(Marker referenceToRemove) {
        return referenceList.remove(referenceToRemove);
    }

    public boolean contains(Marker other) {
        if (other == null) {
            throw new IllegalArgumentException("Other cannot be null");
        }

        if (this.equals(other)) {
            return true;
        }

        if (hasReferences()) {
            for (Marker ref : referenceList) {
                if (ref.contains(other)) {
                    return true;
                }
            }
        }
        return false;
    }

    /**
     * This method is mainly used with Expression Evaluators.
     */
    public boolean contains(String name) {
        if (name == null) {
            throw new IllegalArgumentException("Other cannot be null");
        }

        if (this.name.equals(name)) {
            return true;
        }

        if (hasReferences()) {
            for (Marker ref : referenceList) {
                if (ref.contains(name)) {
                    return true;
                }
            }
        }
        return false;
    }

    private static final String OPEN = "[ ";
    private static final String CLOSE = " ]";
    private static final String SEP = ", ";

    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (!(obj instanceof Marker))
            return false;

        final Marker other = (Marker) obj;
        return name.equals(other.getName());
    }

    public int hashCode() {
        return name.hashCode();
    }

    public String toString() {
        if (!this.hasReferences()) {
            return this.getName();
        }
        Iterator it = this.iterator();
        Marker reference;
        StringBuilder sb = new StringBuilder(this.getName());
        sb.append(' ').append(OPEN);
        while (it.hasNext()) {
            reference = it.next();
            sb.append(reference.getName());
            if (it.hasNext()) {
                sb.append(SEP);
            }
        }
        sb.append(CLOSE);

        return sb.toString();
    }
}