001    // Copyright 2007, 2008, 2009 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry5.annotations;
016    
017    import org.apache.tapestry5.model.ComponentModel;
018    
019    import java.lang.annotation.Documented;
020    import static java.lang.annotation.ElementType.TYPE;
021    import java.lang.annotation.Retention;
022    import static java.lang.annotation.RetentionPolicy.RUNTIME;
023    import java.lang.annotation.Target;
024    
025    import static org.apache.tapestry5.ioc.annotations.AnnotationUseContext.*;
026    import org.apache.tapestry5.ioc.annotations.UseWith;
027    
028    /**
029     * Allows for the specification of per-component meta-data. Meta data can later be accessed via {@link
030     * ComponentModel#getMeta(String)}. Meta data keys are case insensitive. Meta data defined by a subclass overrides meta
031     * data for the super class (where the keys conflict).
032     *
033     * @see org.apache.tapestry5.MetaDataConstants
034     */
035    @Target(TYPE)
036    @Retention(RUNTIME)
037    @Documented
038    @UseWith({COMPONENT,MIXIN,PAGE})
039    public @interface Meta
040    {
041        /**
042         * The meta data as a list of "name=value" elements.
043         */
044        String[] value();
045    }