com.vectorprint.configuration.parameters.annotation.Param Maven / Gradle / Ivy

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A library for configuration of applications and parameterization of objects. Settings can be provided in a configfile (file, url, stream), as arguments and programmatically, object parameters can be set using annotations or code. Both provide data type support, serialization, cloning, a help mechanism.

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package com.vectorprint.configuration.parameters.annotation;

/*
 * #%L
 * VectorPrintConfig
 * %%
 * Copyright (C) 2011 - 2013 VectorPrint
 * %%
 * 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.
 * #L%
 */

import com.vectorprint.configuration.parameters.ParameterImpl;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 *
 * @author Eduard Drenth at VectorPrint.nl
 */
@Documented
@Inherited
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
public @interface Param {
   /**
    * means null, no value
    */
   public static final String NULL = "000";
   public String help() default "no help";
   public String key();
   public Class clazz();
   public String defaultValue() default NULL;

}