001    package org.apache.commons.digester3.annotations.rules;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one
005     * or more contributor license agreements.  See the NOTICE file
006     * distributed with this work for additional information
007     * regarding copyright ownership.  The ASF licenses this file
008     * to you under the Apache License, Version 2.0 (the
009     * "License"); you may not use this file except in compliance
010     * with the License.  You may obtain a copy of the License at
011     *
012     *   http://www.apache.org/licenses/LICENSE-2.0
013     *
014     * Unless required by applicable law or agreed to in writing,
015     * software distributed under the License is distributed on an
016     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017     * KIND, either express or implied.  See the License for the
018     * specific language governing permissions and limitations
019     * under the License.
020     */
021    
022    import java.lang.annotation.Documented;
023    import java.lang.annotation.ElementType;
024    import java.lang.annotation.Retention;
025    import java.lang.annotation.RetentionPolicy;
026    import java.lang.annotation.Target;
027    
028    import org.apache.commons.digester3.CallParamRule;
029    import org.apache.commons.digester3.annotations.DigesterRule;
030    import org.apache.commons.digester3.annotations.DigesterRuleList;
031    import org.apache.commons.digester3.annotations.handlers.CallParamHandler;
032    
033    /**
034     * Methods arguments annotated with {@code CallParam} will be bound with {@code CallParamRule} digester rule.
035     * 
036     * @see org.apache.commons.digester3.Digester#addCallParam(String,int)
037     * @since 2.1
038     */
039    @Documented
040    @Retention( RetentionPolicy.RUNTIME )
041    @Target( ElementType.PARAMETER )
042    @DigesterRule( reflectsRule = CallParamRule.class, handledBy = CallParamHandler.class )
043    public @interface CallParam
044    {
045    
046        /**
047         * The element matching pattern.
048         */
049        String pattern();
050    
051        /**
052         * The namespace URI for which this Rule is relevant, if any.
053         *
054         * @since 3.0
055         */
056        String namespaceURI() default "";
057    
058        /**
059         * The attribute from which to save the parameter value.
060         *
061         * @since 3.0
062         */
063        String attributeName() default "";
064    
065        /**
066         * Flags the parameter to be set from the stack.
067         *
068         * @since 3.0
069         */
070        boolean fromStack() default false;
071    
072        /**
073         * Sets the position of the object from the top of the stack.
074         *
075         * @since 3.0
076         */
077        int stackIndex() default 0;
078    
079        /**
080         * Defines several {@code @CallParam} annotations on the same element.
081         * 
082         * @see CallParam
083         */
084        @Documented
085        @Retention( RetentionPolicy.RUNTIME )
086        @Target( ElementType.TYPE )
087        @DigesterRuleList
088        @interface List
089        {
090            CallParam[] value();
091        }
092    
093    }