com.tngtech.configbuilder.annotation.configuration.LoadingOrder Maven / Gradle / Ivy
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The Config Builder creates fully configured instances of config classes, using values from various sources like properties files, command line arguments etc.
package com.tngtech.configbuilder.annotation.configuration;
import com.tngtech.configbuilder.annotation.valueextractor.CommandLineValue;
import com.tngtech.configbuilder.annotation.valueextractor.DefaultValue;
import com.tngtech.configbuilder.annotation.valueextractor.PropertyValue;
import java.lang.annotation.*;
/**
* This annotation is used to specify the order in which the annotations CommandLineValue, PropertyValue and DefaultValue are processed.
* It can specify the order for a certain field if placed on the field, or a global order if placed on the config class.
* The annotations are processed top-down until a string value is found, i.e. the order is from the most important to the least important.
* The order may only contain ValueExtractorAnnotations, i.e. CommandLineValue.class, PropertyValue.class and DefaultValue.class.
* Usage: @LoadingOrder(value = {PropertyValue.class, CommandLineValue.class, DefaultValue.class})
*/
@Target({ElementType.TYPE, ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
public @interface LoadingOrder {
public Class[] value() default {CommandLineValue.class, PropertyValue.class, DefaultValue.class};
}