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-rw-r--r-- | sca-java-2.x/branches/2.0-Beta1/modules/sca-api/src/main/java/org/oasisopen/sca/annotation/Property.java | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/sca-java-2.x/branches/2.0-Beta1/modules/sca-api/src/main/java/org/oasisopen/sca/annotation/Property.java b/sca-java-2.x/branches/2.0-Beta1/modules/sca-api/src/main/java/org/oasisopen/sca/annotation/Property.java new file mode 100644 index 0000000000..6a8c8a0e04 --- /dev/null +++ b/sca-java-2.x/branches/2.0-Beta1/modules/sca-api/src/main/java/org/oasisopen/sca/annotation/Property.java @@ -0,0 +1,58 @@ +/* + * 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; +} |