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/*
* Copyright(C) OASIS(R) 2005,2010. All Rights Reserved.
* OASIS trademark, IPR and other policies apply.
*/
package org.oasisopen.sca.annotation;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
/**
* The @Property annotation is used to denote a Java class field,
* a setter method, or a constructor parameter that is used to
* inject an SCA property value. The type of the property injected,
* which can be a simple Java type or a complex Java type, is defined
* by the type of the Java class field or the type of the input
* parameter of the setter method or constructor.
*
* The @Property annotation can be used on fields, on setter methods
* or on a constructor method parameter. However, the @Property annotation
* MUST NOT be used on a class field that is declared as final.
*
* Properties can also be injected via setter methods even when
* the @Property annotation is not present. However, the @Property
* annotation must be used in order to inject a property onto a
* non-public field. In the case where there is no @Property
* annotation, the name of the property is the same as the name of the
* field or setter.
*
* Where there is both a setter method and a field for a property, the
* setter method is used.
*/
@Target({METHOD, FIELD, PARAMETER})
@Retention(RUNTIME)
public @interface Property {
/**
* The name of the property. For a field annotation, the default is
* the name of the field of the Java class. For a setter method annotation,
* the default is the JavaBeans property name corresponding to the setter
* method name. For a constructor parameter annotation, there is no
* default and the name attribute MUST be present.
*
* @return the name of the property
*/
String name() default "";
/**
* Specifies whether injection is required, defaults to true. For a
* constructor parameter annotation, this attribute MUST have the value true.
*
* @return true if injection is required
*/
boolean required() default true;
}
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