tapestry/tapestry-annotations/src/java/org/apache/tapestry/annotations/InitialValue.java

// Copyright 2005 The Apache Software Foundation
//
// 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.apache.tapestry.annotations;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * An annotation used to provide the initial value of a transient or persistent property.
 * 
 * @author Howard M. Lewis Ship
 * @since 4.0
 * @see org.apache.tapestry.annotations.PersistAnnotationWorker
 * @see org.apache.tapestry.annotations.InitialValueAnnotationWorker
 */
@Target(
{ ElementType.METHOD })
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface InitialValue {
    /**
     * The initial value for the property as a binding reference that is evaluated when the page is
     * first constructed, and again every time the page is detached and returned to the page pool.
     * The default binding prefix is "ognl:".
     */
    String value();
}