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DiscoverEjbAnnotationsRuleProvider.java
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DiscoverEjbAnnotationsRuleProvider.java
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package org.jboss.windup.rules.apps.javaee.rules;
import java.util.logging.Logger;
import org.apache.commons.lang.StringUtils;
import org.jboss.forge.furnace.util.Strings;
import org.jboss.windup.ast.java.data.TypeReferenceLocation;
import org.jboss.windup.config.AbstractRuleProvider;
import org.jboss.windup.config.GraphRewrite;
import org.jboss.windup.config.metadata.MetadataBuilder;
import org.jboss.windup.config.operation.iteration.AbstractIterationOperation;
import org.jboss.windup.config.phase.InitialAnalysisPhase;
import org.jboss.windup.graph.GraphContext;
import org.jboss.windup.graph.service.GraphService;
import org.jboss.windup.graph.service.Service;
import org.jboss.windup.rules.apps.java.condition.JavaClass;
import org.jboss.windup.rules.apps.java.model.AbstractJavaSourceModel;
import org.jboss.windup.rules.apps.java.model.JavaClassModel;
import org.jboss.windup.rules.apps.java.scan.ast.JavaTypeReferenceModel;
import org.jboss.windup.rules.apps.java.scan.ast.annotations.JavaAnnotationListTypeValueModel;
import org.jboss.windup.rules.apps.java.scan.ast.annotations.JavaAnnotationLiteralTypeValueModel;
import org.jboss.windup.rules.apps.java.scan.ast.annotations.JavaAnnotationTypeReferenceModel;
import org.jboss.windup.rules.apps.java.scan.ast.annotations.JavaAnnotationTypeValueModel;
import org.jboss.windup.rules.apps.java.scan.provider.AnalyzeJavaFilesRuleProvider;
import org.jboss.windup.rules.apps.javaee.model.EjbMessageDrivenModel;
import org.jboss.windup.rules.apps.javaee.model.EjbSessionBeanModel;
import org.jboss.windup.rules.apps.javaee.service.JmsDestinationService;
import org.jboss.windup.util.Logging;
import org.ocpsoft.rewrite.config.Configuration;
import org.ocpsoft.rewrite.config.ConfigurationBuilder;
import org.ocpsoft.rewrite.context.EvaluationContext;
/**
* Scans for classes with EJB related annotations, and adds EJB related metadata for these.
*/
public class DiscoverEjbAnnotationsRuleProvider extends AbstractRuleProvider
{
private static Logger LOG = Logging.get(DiscoverEjbAnnotationsRuleProvider.class);
public DiscoverEjbAnnotationsRuleProvider()
{
super(MetadataBuilder.forProvider(DiscoverEjbAnnotationsRuleProvider.class)
.setPhase(InitialAnalysisPhase.class)
.addExecuteAfter(AnalyzeJavaFilesRuleProvider.class));
}
@Override
public Configuration getConfiguration(GraphContext context)
{
String ruleIDPrefix = getClass().getSimpleName();
return ConfigurationBuilder.begin()
.addRule()
.when(JavaClass.references("javax.ejb.{annotationType}").at(TypeReferenceLocation.ANNOTATION))
.perform(new AbstractIterationOperation<JavaTypeReferenceModel>()
{
public void perform(GraphRewrite event, EvaluationContext context, JavaTypeReferenceModel payload)
{
extractEJBMetadata(event, payload);
}
})
.where("annotationType").matches("Stateless|Stateful")
.withId(ruleIDPrefix + "_StatelessAndStatefulRule")
.addRule()
.when(JavaClass.references("javax.ejb.MessageDriven").at(TypeReferenceLocation.ANNOTATION))
.perform(new AbstractIterationOperation<JavaTypeReferenceModel>()
{
@Override
public void perform(GraphRewrite event, EvaluationContext context, JavaTypeReferenceModel payload)
{
extractMessageDrivenMetadata(event, payload);
}
})
.withId(ruleIDPrefix + "_MessageDrivenRule");
}
private String getAnnotationLiteralValue(JavaAnnotationTypeReferenceModel model, String name)
{
JavaAnnotationTypeValueModel valueModel = model.getAnnotationValues().get(name);
if (valueModel instanceof JavaAnnotationLiteralTypeValueModel)
{
JavaAnnotationLiteralTypeValueModel literalTypeValue = (JavaAnnotationLiteralTypeValueModel) valueModel;
return literalTypeValue.getLiteralValue();
}
else
{
return null;
}
}
private void extractEJBMetadata(GraphRewrite event, JavaTypeReferenceModel javaTypeReference)
{
javaTypeReference.getFile().setGenerateSourceReport(true);
JavaAnnotationTypeReferenceModel annotationTypeReference = (JavaAnnotationTypeReferenceModel) javaTypeReference;
JavaClassModel ejbClass = getJavaClass(javaTypeReference);
String ejbName = getAnnotationLiteralValue(annotationTypeReference, "name");
if (Strings.isNullOrEmpty(ejbName))
{
ejbName = ejbClass.getClassName();
}
String sessionType = javaTypeReference.getResolvedSourceSnippit()
.substring(javaTypeReference.getResolvedSourceSnippit().lastIndexOf(".") + 1);
Service<EjbSessionBeanModel> sessionBeanService = new GraphService<>(event.getGraphContext(), EjbSessionBeanModel.class);
EjbSessionBeanModel sessionBean = sessionBeanService.create();
sessionBean.setBeanName(ejbName);
sessionBean.setEjbClass(ejbClass);
sessionBean.setSessionType(sessionType);
}
private void extractMessageDrivenMetadata(GraphRewrite event, JavaTypeReferenceModel javaTypeReference)
{
javaTypeReference.getFile().setGenerateSourceReport(true);
JavaAnnotationTypeReferenceModel annotationTypeReference = (JavaAnnotationTypeReferenceModel) javaTypeReference;
JavaClassModel ejbClass = getJavaClass(javaTypeReference);
String ejbName = getAnnotationLiteralValue(annotationTypeReference, "name");
if (Strings.isNullOrEmpty(ejbName))
{
ejbName = ejbClass.getClassName();
}
String destination = getAnnotationLiteralValue(annotationTypeReference, "mappedName");
if (StringUtils.isBlank(destination))
{
JavaAnnotationTypeValueModel activationConfigAnnotation = annotationTypeReference.getAnnotationValues().get("activationConfig");
destination = getDestinationFromActivationConfig(activationConfigAnnotation);
}
Service<EjbMessageDrivenModel> messageDrivenService = new GraphService<>(event.getGraphContext(), EjbMessageDrivenModel.class);
EjbMessageDrivenModel messageDrivenBean = messageDrivenService.create();
messageDrivenBean.setBeanName(ejbName);
messageDrivenBean.setEjbClass(ejbClass);
if (StringUtils.isNotBlank(destination))
{
JmsDestinationService jmsDestinationService = new JmsDestinationService(event.getGraphContext());
messageDrivenBean.setDestination(jmsDestinationService.createUnique(destination));
}
}
private String getDestinationFromActivationConfig(JavaAnnotationTypeValueModel annotationTypeReferenceModel)
{
if (annotationTypeReferenceModel == null)
{
return null;
}
if (annotationTypeReferenceModel instanceof JavaAnnotationListTypeValueModel)
{
for (JavaAnnotationTypeValueModel activationConfig : (JavaAnnotationListTypeValueModel) annotationTypeReferenceModel)
{
if (!(activationConfig instanceof JavaAnnotationTypeReferenceModel))
{
continue;
}
JavaAnnotationTypeReferenceModel javaAnnotationTypeReferenceModel = (JavaAnnotationTypeReferenceModel) activationConfig;
String destination = getDestinationFromActivationConfig(javaAnnotationTypeReferenceModel);
if (destination != null)
{
return destination;
}
}
return null;
}
else if (annotationTypeReferenceModel instanceof JavaAnnotationTypeReferenceModel)
{
JavaAnnotationTypeReferenceModel javaAnnotationTypeReferenceModel = (JavaAnnotationTypeReferenceModel) annotationTypeReferenceModel;
JavaAnnotationTypeValueModel propertyNameModel = javaAnnotationTypeReferenceModel.getAnnotationValues().get("propertyName");
JavaAnnotationTypeValueModel propertyValueModel = javaAnnotationTypeReferenceModel.getAnnotationValues().get("propertyValue");
if (propertyNameModel instanceof JavaAnnotationLiteralTypeValueModel
&& propertyValueModel instanceof JavaAnnotationLiteralTypeValueModel)
{
String propertyName = ((JavaAnnotationLiteralTypeValueModel) propertyNameModel).getLiteralValue();
String propertyValue = ((JavaAnnotationLiteralTypeValueModel) propertyValueModel).getLiteralValue();
if ("destination".equals(propertyName))
{
return propertyValue;
}
}
return null;
}
else
{
return null;
}
}
private JavaClassModel getJavaClass(JavaTypeReferenceModel javaTypeReference)
{
JavaClassModel result = null;
AbstractJavaSourceModel javaSource = javaTypeReference.getFile();
for (JavaClassModel javaClassModel : javaSource.getJavaClasses())
{
// there can be only one public one, and the annotated class should be public
if (javaClassModel.isPublic() != null && javaClassModel.isPublic())
{
result = javaClassModel;
break;
}
}
if (result == null)
{
// no public classes found, so try to find any class (even non-public ones)
result = javaSource.getJavaClasses().iterator().next();
}
return result;
}
@Override
public String toString()
{
return "DiscoverEJBAnnotatedClasses";
}
}