Service Component Architecture sca-j common Annotations and apis Specification Version 1 Committee Draft 03 – Rev1 + Issue 127
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- 10.11@EagerInit
- 10.12@Init
- 10.13@Integrity
- 10.14@Intent
10.10@DestroyThe following Java code defines the @Destroy annotation: package org.oasisopen.sca.annotation; import static java.lang.annotation.ElementType.METHOD; import static java.lang.annotation.RetentionPolicy.RUNTIME; import java.lang.annotation.Retention; import java.lang.annotation.Target; @Target(METHOD) @Retention(RUNTIME) public @interface Destroy { } The @Destroy annotation is used to denote a single Java class method that will be called when the scope defined for the implementation class ends. A method annotated with @Destroy can have any access modifier and MUST have a void return type and no arguments. [JCA90004] If there is a method annotated with @Destroy that matches the criteria for the annotation, the SCA runtime MUST call the annotated method when the scope defined for the implementation class ends. [JCA90005] The following snippet shows a sample for a destroy method definition. @Destroy public void myDestroyMethod() { … } 10.11@EagerInitThe following Java code defines the @EagerInit annotation: package org.oasisopen.sca.annotation; import static java.lang.annotation.ElementType.TYPE; import static java.lang.annotation.RetentionPolicy.RUNTIME; import java.lang.annotation.Retention; import java.lang.annotation.Target; @Target(TYPE) @Retention(RUNTIME) public @interface EagerInit { } The @EagerInit annotation is used to mark the Java class of a COMPOSITE scoped implementation for eager initialization. When marked for eager initialization with an @EagerInit annotation, the composite scoped instance MUST be created when its containing component is started. [JCA90007] 10.12@InitThe following Java code defines the @Init annotation: package org.oasisopen.sca.annotation; import static java.lang.annotation.ElementType.METHOD; import static java.lang.annotation.RetentionPolicy.RUNTIME; import java.lang.annotation.Retention; import java.lang.annotation.Target; @Target(METHOD) @Retention(RUNTIME) public @interface Init { } The @Init annotation is used to denote a single Java class method that is called when the scope defined for the implementation class starts. A method marked with the @Init annotation can have any access modifier and MUST have a void return type and no arguments. [JCA90008] If there is a method annotated with @Init that matches the criteria for the annotation, the SCA runtime MUST call the annotated method after all property and reference injection is complete. [JCA90009] The following snippet shows an example of an init method definition. @Init public void myInitMethod() { … } 10.13@IntegrityThe following Java code defines the @Integrity annotation: 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.ElementType.TYPE; import static java.lang.annotation.RetentionPolicy.RUNTIME; import static org.oasisopen.sca.Constants.SCA_PREFIX; import java.lang.annotation.Inherited; import java.lang.annotation.Retention; import java.lang.annotation.Target; @Inherited @Target({TYPE, FIELD, METHOD, PARAMETER}) @Retention(RUNTIME) @Intent(Integrity.INTEGRITY) public @interface Integrity { String INTEGRITY = SCA_PREFIX + "integrity"; String INTEGRITY_MESSAGE = INTEGRITY + ".message"; String INTEGRITY_TRANSPORT = INTEGRITY + ".transport"; /** * List of integrity qualifiers (such as "message" or "transport"). * * @return integrity qualifiers */ @Qualifier String[] value() default ""; }
10.14@IntentThe following Java code defines the @Intent annotation: package org.oasisopen.sca.annotation; import static java.lang.annotation.ElementType.ANNOTATION_TYPE; import static java.lang.annotation.RetentionPolicy.RUNTIME; import java.lang.annotation.Retention; import java.lang.annotation.Target; @Target({ANNOTATION_TYPE}) @Retention(RUNTIME) public @interface Intent { /**
* The qualified name of the intent, in the form defined by * {@link javax.xml.namespace.QName#toString}. * @return the qualified name of the intent */ String value() default ""; /** * The XML namespace for the intent. * @return the XML namespace for the intent */ String targetNamespace() default ""; /** * The name of the intent within its namespace. * @return name of the intent within its namespace */ String localPart() default ""; } The @Intent annotation is used for the creation of new annotations for specific intents. It is not expected that the @Intent annotation will be used in application code. See the section "How to Create Specific Intent Annotations" for details and samples of how to define new intent annotations.
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