com.tngtech.configbuilder.annotation.valueextractor.EnvironmentVariableValue 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.

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package com.tngtech.configbuilder.annotation.valueextractor;

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

/**
 * This annotation is used to specify environment variables.

 * Usage: @EnvironmentVariableValue("ENV_VAR")
 */
@ValueExtractorAnnotation(EnvironmentVariableProcessor.class)
@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
public @interface EnvironmentVariableValue {
    String value();
}