Injection.java

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 * Pentaho Data Integration
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 * Copyright (C) 2002-2015 by Pentaho : http://www.pentaho.com
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 * 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
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 *    http://www.apache.org/licenses/LICENSE-2.0
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package org.pentaho.di.core.injection;

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

/**
 * Field that support injection should be marked by this annotation.
 */
@Retention( RetentionPolicy.RUNTIME )
@Target( { ElementType.FIELD, ElementType.METHOD } )
public @interface Injection {

  /** Injection key. */
  String name();

  /** Injection group. */
  String group() default "";

  /** Converter from RowMetaAndData to java types. */
  Class<? extends InjectionTypeConverter> converter() default DefaultInjectionTypeConverter.class;

  /** Convert empty values or not. By default, empty value doesn't change target value. */
  boolean convertEmpty() default false;
}