Package com.sun.enterprise.connectors.deployment.annotation.handlers

Source Code of com.sun.enterprise.connectors.deployment.annotation.handlers.ConnectorResourceDefinitionHandler

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package com.sun.enterprise.connectors.deployment.annotation.handlers;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Properties;
import java.util.Set;
import java.util.logging.Level;

import javax.interceptor.AroundInvoke;
import javax.interceptor.AroundTimeout;
import javax.interceptor.Interceptors;
import javax.resource.ConnectorResourceDefinition;

import org.glassfish.apf.AnnotationHandlerFor;
import org.glassfish.apf.AnnotationInfo;
import org.glassfish.apf.AnnotationProcessorException;
import org.glassfish.apf.HandlerProcessingResult;
import org.glassfish.deployment.common.RootDeploymentDescriptor;
import org.jvnet.hk2.annotations.Service;

import com.sun.enterprise.deployment.ConnectorResourceDefinitionDescriptor;
import com.sun.enterprise.deployment.EjbBundleDescriptor;
import com.sun.enterprise.deployment.EjbDescriptor;
import com.sun.enterprise.deployment.MetadataSource;
import com.sun.enterprise.deployment.WebBundleDescriptor;
import com.sun.enterprise.deployment.annotation.context.EjbBundleContext;
import com.sun.enterprise.deployment.annotation.context.EjbContext;
import com.sun.enterprise.deployment.annotation.context.EjbInterceptorContext;
import com.sun.enterprise.deployment.annotation.context.ResourceContainerContext;
import com.sun.enterprise.deployment.annotation.context.WebBundleContext;
import com.sun.enterprise.deployment.annotation.context.WebComponentContext;
import com.sun.enterprise.deployment.annotation.context.WebComponentsContext;
import com.sun.enterprise.deployment.annotation.handlers.AbstractResourceHandler;

/**
* @author Dapeng Hu
*/
@Service
@AnnotationHandlerFor(ConnectorResourceDefinition.class)
public class ConnectorResourceDefinitionHandler extends AbstractResourceHandler {

   
    public ConnectorResourceDefinitionHandler() {
    }


    @Override
    protected HandlerProcessingResult processAnnotation(AnnotationInfo ainfo, ResourceContainerContext[] rcContexts)
            throws AnnotationProcessorException {
        ConnectorResourceDefinition connectorResourceDefnAn = (ConnectorResourceDefinition)ainfo.getAnnotation();
        return processAnnotation(connectorResourceDefnAn, ainfo, rcContexts);
    }

    protected HandlerProcessingResult processAnnotation(ConnectorResourceDefinition connectorResourceDefnAn, AnnotationInfo aiInfo,
                                                        ResourceContainerContext[] rcContexts
              throws AnnotationProcessorException {
       
        Class annotatedClass = (Class)aiInfo.getAnnotatedElement();
        Annotation[] annotations = annotatedClass.getAnnotations();
        boolean warClass = isAWebComponentClass(annotations);
        boolean ejbClass = isAEjbComponentClass(annotations);
       
        for(ResourceContainerContext context : rcContexts){
            if (!canProcessAnnotation(annotatedClass, ejbClass, warClass, context)){
                return getDefaultProcessedResult();
            }
            Set<ConnectorResourceDefinitionDescriptor> crdDescs = context.getConnectorResourceDefinitionDescriptors();
            ConnectorResourceDefinitionDescriptor desc = createDescriptor(connectorResourceDefnAn);
            if(isDefinitionAlreadyPresent(crdDescs, desc)){
                merge(crdDescs, connectorResourceDefnAn);
            }else{
                context.addConnectorResourceDefinitionDescriptor(desc);
            }
        }
        return getDefaultProcessedResult();
    }

    /**
     * To take care of the case where an ejb is provided in a .war and
     * annotation processor will process this class twice (once for ejb and
     * once for web-bundle-context, which is a bug).<br>
     * This method helps to overcome the issue, partially.<br>
     * Checks whether both the annotated class and the context are either ejb or web.
     *
     * @param annotatedClass annotated-class
     * @param ejbClass indicates whether the class is an ejb-class
     * @param warClass indicates whether the class is an web-class
     * @param context resource-container-context
     * @return boolean indicates whether the annotation can be processed.
     */
    private boolean canProcessAnnotation(Class annotatedClass, boolean ejbClass, boolean warClass,
                                         ResourceContainerContext context) {
        if (ejbClass) {
            if (!(context instanceof EjbBundleContext ||
                    context instanceof EjbContext ||
                    context instanceof EjbInterceptorContext )) {
                if (logger.isLoggable(Level.FINEST)) {
                    logger.log(Level.FINEST, "Ignoring @ConnectorResourceDefinition annotation processing as the class is" +
                            "an EJB class and context is not one of EJBContext");
                }
                return false;
            }
        } else if (context instanceof EjbBundleContext) {
            EjbBundleContext ejbContext = (EjbBundleContext) context;
            EjbBundleDescriptor ejbBundleDescriptor = ejbContext.getDescriptor();
            EjbDescriptor[] ejbDescriptor = ejbBundleDescriptor.getEjbByClassName(annotatedClass.getName());
            if (ejbDescriptor == null || ejbDescriptor.length == 0) {
                if (logger.isLoggable(Level.FINEST)) {
                    logger.log(Level.FINEST, "Ignoring @ConnectorResourceDefinition annotation processing as the class " +
                            "[ " + annotatedClass + " ] is" +
                            "not an EJB class and the context is EJBContext");
                }
                return false;
            }
        } else if (warClass) {
            if (!(context instanceof WebBundleContext || context instanceof WebComponentsContext
                    || context instanceof WebComponentContext )) {
                if (logger.isLoggable(Level.FINEST)) {
                    logger.log(Level.FINEST, "Ignoring @ConnectorResourceDefinition annotation processing as the class is" +
                            "an Web class and context is not one of WebContext");
                }
                return false;
            }
        } else if (context instanceof WebBundleContext) {
            WebBundleContext webBundleContext = (WebBundleContext) context;
            WebBundleDescriptor webBundleDescriptor = webBundleContext.getDescriptor();
            Collection<RootDeploymentDescriptor> extDesc = webBundleDescriptor.getExtensionsDescriptors();
            for(RootDeploymentDescriptor desc : extDesc){
                if(desc instanceof EjbBundleDescriptor){
                    EjbBundleDescriptor ejbBundleDesc = (EjbBundleDescriptor)desc;
                    EjbDescriptor[] ejbDescs = ejbBundleDesc.getEjbByClassName(annotatedClass.getName());
                    if(ejbDescs != null && ejbDescs.length > 0){
                        if (logger.isLoggable(Level.FINEST)) {
                            logger.log(Level.FINEST, "Ignoring @ConnectorResourceDefinition annotation processing as the class " +
                                    "[ " + annotatedClass + " ] is" +
                                    "not an Web class and the context is WebContext");
                        }
                        return false;
                    }else if(ejbBundleDesc.getInterceptorByClassName(annotatedClass.getName()) != null){
                            if (logger.isLoggable(Level.FINEST)) {
                                logger.log(Level.FINEST, "Ignoring @ConnectorResourceDefinition annotation processing " +
                                        "as the class " +
                                        "[ " + annotatedClass + " ] is" +
                                        "not an Web class and the context is WebContext");
                            }
                            return false;
                    }else{
                        Method[] methods = annotatedClass.getDeclaredMethods();
                        for(Method method : methods){
                            Annotation annotations[] = method.getAnnotations();
                            for(Annotation annotation : annotations){
                                if(annotation.annotationType().equals(AroundInvoke.class) ||
                                        annotation.annotationType().equals(AroundTimeout.class) ||
                                        annotation.annotationType().equals(Interceptors.class)) {
                                    if (logger.isLoggable(Level.FINEST)) {
                                        logger.log(Level.FINEST, "Ignoring @ConnectorResourceDefinition annotation processing " +
                                                "as the class " +
                                                "[ " + annotatedClass + " ] is" +
                                                "not an Web class, an interceptor and the context is WebContext");
                                    }
                                    return false;
                                }
                            }
                        }
                    }
                }
            }
        }
        return true;
    }

   
    private boolean isDefinitionAlreadyPresent(Set<ConnectorResourceDefinitionDescriptor> crdDescs,  ConnectorResourceDefinitionDescriptor desc) {
        boolean result = false ;
        for(ConnectorResourceDefinitionDescriptor crdDesc : crdDescs){
            if(crdDesc.equals(desc)){
                result = true;
                break;
            }
        }
        return result;
    }

    private void merge(Set<ConnectorResourceDefinitionDescriptor> crdDescs, ConnectorResourceDefinition defn) {

        for (ConnectorResourceDefinitionDescriptor desc : crdDescs) {

            if (desc.getName().equals(defn.name())) {

                if (desc.getClassName() == null) {
                    desc.setClassName(defn.className());
                }

                if (desc.getDescription() == null) {
                    if (defn.description() != null && !defn.description().equals("")) {
                        desc.setDescription(defn.description());
                    }
                }

                //TODO: add more properties here
               
                Properties properties = desc.getProperties();
                String[] defnProperties = defn.properties();

                if (defnProperties.length > 0) {
                    for (String property : defnProperties) {
                        int index = property.indexOf("=");
                        // found "=" and not at start or end of string
                        if (index > 0 && index < property.length() - 1) {
                            String name = property.substring(0, index);
                            String value = property.substring(index + 1);
                            //add to properties only when not already present
                            if (properties.get(name) == null) {
                                properties.put(name, value);
                            }
                        }
                    }
                }
                break;
            }
        }

    }

    private ConnectorResourceDefinitionDescriptor createDescriptor(ConnectorResourceDefinition defn) {

        ConnectorResourceDefinitionDescriptor desc = new ConnectorResourceDefinitionDescriptor();
        desc.setMetadataSource(MetadataSource.ANNOTATION);

        desc.setName(defn.name());
        desc.setClassName(defn.className());

        if (defn.description() != null && !defn.description().equals("")) {
            desc.setDescription(defn.description());
        }

        //TODO: add more properties here

        if (defn.properties() != null) {
            Properties properties = desc.getProperties();

            String[] defnProperties = defn.properties();
            if (defnProperties.length > 0) {
                for (String property : defnProperties) {
                    int index = property.indexOf("=");
                    // found "=" and not at start or end of string
                    if (index > 0 && index < property.length() - 1) {
                        String name = property.substring(0, index);
                        String value = property.substring(index + 1);
                        properties.put(name.trim(), value.trim());
                    }
                }
            }
        }

        return desc;
    }

}
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