juzu.Param Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of juzu-core

Where all the magic happens

There is a newer version: 1.2.0

/*
 * Copyright 2013 eXo Platform SAS
 *
 * 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 juzu;

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

/**
 * An annotation describing a parameter.
 *
 * Annotating a route parameter
 *
 * Route parameters can be annotated to provide constrain the value of a parameter, for instance:
 *
 *  *    public class MyController {
 *
 *       @{@link View}
 *       @{@link Route}("/myview/{id}")
 *       public {@link juzu.Response.Render} myView(@{@link Param}(pattern = "[0-9]+") String id) { ... }
 *    }
 * 
 *
 * @author Julien Viet
 */
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.PARAMETER})
public @interface Param {

  /**
   * The parameter pattern as a valid regular expression.
   *
   * @return the pattern value
   */
  String pattern() default "";

  boolean preservePath() default false;

  boolean captureGroup() default false;

}