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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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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2016 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.wildfly.security.permission;

import java.security.Permission;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Set;

/**
 * A permission collection type which either does or does not hold its instance.
 *
 * @author David M. Lloyd
 */
public final class BooleanPermissionCollection extends AbstractPermissionCollection {
    private volatile boolean added;

    /**
     * Construct a new instance.
     *
     * @param sourcePermission the source permission for this collection (must not be {@code null})
     */
    public BooleanPermissionCollection(final AbstractPermission sourcePermission) {
        super(sourcePermission);
    }

    public int size() {
        return added ? 1 : 0;
    }

    public Iterator iterator() {
        return added ? getSingletonCollection().iterator() : Collections.emptyIterator();
    }

    public Enumeration elements() {
        return added ? Collections.enumeration(getSingletonCollection()) : Collections.emptyEnumeration();
    }

    private Set getSingletonCollection() {
        return Collections.singleton(getSourcePermission());
    }

    protected void doAdd(final AbstractPermission permission) {
        added = true;
    }

    public boolean implies(final Permission permission) {
        return added && permission.getClass() == getSourcePermission().getClass();
    }
}