# ServiceTags.java

    /*
     * Copyright (c) 2008, Rickard Öberg. All Rights Reserved.
     *
     * 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.qi4j.api.service.qualifier;

    import java.io.Serializable;

    /**
     * Use this as metainfo about a Service to specify tags. Easiest way to set them on a service
     * is to use the <code>ServiceDeclaration.taggedWith(String...)</code> method.
     *
     * These can be used in conjunction with the withTags() Service
     * Selector.
     */
    public final class ServiceTags
        implements Serializable
    {
        private String[] tags;

        public ServiceTags( String... tags )
        {
            this.tags = tags;
        }

        public String[] tags()
        {
            return tags;
        }

        public boolean hasTag( String tag )
        {
            for( String serviceTag : tags )
            {
                if( serviceTag.equals( tag ) )
                {
                    return true;
                }
            }

            return false;
        }

        public boolean hasTags( String... aTags )
        {
            for( String tag : aTags )
            {
                if( !hasTag( tag ) )
                {
                    return false;
                }
            }

            return true;
        }
    }