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Diffstat (limited to 'tags/java/sca/2.0-M4-RC3/modules/sca-api/src/main/java/org/oasisopen/sca/ComponentContext.java')
| -rw-r--r-- | tags/java/sca/2.0-M4-RC3/modules/sca-api/src/main/java/org/oasisopen/sca/ComponentContext.java | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/tags/java/sca/2.0-M4-RC3/modules/sca-api/src/main/java/org/oasisopen/sca/ComponentContext.java b/tags/java/sca/2.0-M4-RC3/modules/sca-api/src/main/java/org/oasisopen/sca/ComponentContext.java new file mode 100644 index 0000000000..740003fc12 --- /dev/null +++ b/tags/java/sca/2.0-M4-RC3/modules/sca-api/src/main/java/org/oasisopen/sca/ComponentContext.java @@ -0,0 +1,119 @@ +/* + * Copyright(C) OASIS(R) 2005,2009. All Rights Reserved. + * OASIS trademark, IPR and other policies apply. + */ +package org.oasisopen.sca; + +import java.util.Collection; + +/** + * Interface providing programmatic access to a component's SCA context as an alternative to injection. + * It provides access to reference and property values for the component and provides a mechanism for + * obtaining a reference to a service that can be passed to other components. + * <p/> + * SCA components obtain an instance of this interface through injection. Non-SCA client code may also + * obtain an instance through runtime-specific mechanisms. + * + * @version $Rev$ $Date$ + */ +public interface ComponentContext { + /** + * Returns the absolute URI of the component within the SCA Domain. + * + * @return the absolute URI of the component + */ + String getURI(); + + /** + * Cast a type-safe reference to a CallableReference. + * Converts a type-safe reference to an equivalent CallableReference; if the target refers to a service + * then a ServiceReference will be returned, if the target refers to a callback then a CallableReference + * will be returned. + * + * @param target a reference proxy provided by the SCA runtime + * @param <B> the Java type of the business interface for the reference + * @param <R> the type of reference to be returned + * @return a CallableReference equivalent for the proxy + * @throws IllegalArgumentException if the supplied instance is not a reference supplied by the SCA runtime + */ + <B, R extends ServiceReference<B>> R cast(B target) throws IllegalArgumentException; + + /** + * Returns a proxy for a reference defined by this component. + * + * @param businessInterface the interface that will be used to invoke the service + * @param referenceName the name of the reference + * @param <B> the Java type of the business interface for the reference + * @return an object that implements the business interface + */ + <B> B getService(Class<B> businessInterface, String referenceName); + + /** + * Returns a ServiceReference for a reference defined by this component. + * + * @param businessInterface the interface that will be used to invoke the service + * @param referenceName the name of the reference + * @param <B> the Java type of the business interface for the reference + * @return a ServiceReference for the designated reference + */ + <B> ServiceReference<B> getServiceReference(Class<B> businessInterface, String referenceName); + + /** + * Returns the value of an SCA property defined by this component. + * + * @param type the Java type to be returned for the property + * @param propertyName the name of the property whose value should be returned + * @param <B> the Java type of the property + * @return the property value + */ + <B> B getProperty(Class<B> type, String propertyName); + + /** + * Returns a ServiceReference that can be used to invoke this component over the default service. + * + * @param businessInterface the interface that will be used to invoke the service + * @param <B> the Java type of the business interface for the reference + * @return a ServiceReference that will invoke this component + */ + <B> ServiceReference<B> createSelfReference(Class<B> businessInterface); + + /** + * Returns a ServiceReference that can be used to invoke this component over the designated service. + * + * @param businessInterface the interface that will be used to invoke the service + * @param serviceName the name of the service to invoke + * @param <B> the Java type of the business interface for the reference + * @return a ServiceReference that will invoke this component + */ + <B> ServiceReference<B> createSelfReference(Class<B> businessInterface, String serviceName); + + /** + * Returns the context for the current SCA service request, or null if there is no current request + * or if the context is unavailable. + * + * @return the SCA request context; may be null + */ + RequestContext getRequestContext(); + + + /* ******************** Contribution for issue TUSCANY-2281 ******************** */ + + /** + * Returns a Collection of typed service proxies for a business interface type and a reference name. + * @param businessInterface the interface that will be used to invoke the service + * @param referenceName the name of the reference + * @param <B> the Java type of the business interface for the reference + * @return a Collection of objects that implements the business interface + */ + <B> Collection<B> getServices(Class<B> businessInterface, String referenceName); + + + /** + * Returns a Collection of typed service reference for a business interface type and a reference name. + * @param businessInterface the interface that will be used to invoke the service + * @param referenceName the name of the reference + * @param <B> the Java type of the business interface for the reference + * @return a Collection of objects that implements the business interface + */ + <B> Collection<ServiceReference<B>> getServiceReferences(Class<B> businessInterface, String referenceName); +} |