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package com.sun.enterprise.tools.verifier.tests.ejb.businessmethod;

import com.sun.enterprise.tools.verifier.tests.ejb.EjbTest;
import java.lang.reflect.*;
import java.util.Set;

import com.sun.enterprise.deployment.*;
import com.sun.enterprise.tools.verifier.*;
import com.sun.enterprise.tools.verifier.tests.ejb.EjbCheck;
import com.sun.enterprise.tools.verifier.tests.*;

/** 
 * Enterprise Bean's business(...) methods static test.
 * Each enterprise Bean class must define zero or more business(...) methods. 
 * The method signatures must follow these rules: 
 * 
 * The method must not be declared as static. 
 */
public class BusinessMethodStatic extends EjbTest implements EjbCheck { 
    
    Result result = null;
    ComponentNameConstructor compName = null;
    
    /** 
     * Enterprise Bean's business(...) methods static test.
     * Each enterprise Bean class must define zero or more business(...) methods. 
     * The method signatures must follow these rules: 
     * 
     * The method must not be declared as static. 
     *   
     * @param descriptor the Enterprise Java Bean deployment descriptor
     *   
     * @return <code>Result</code> the results for this assertion
     */
    public Result check(EjbDescriptor descriptor) {
        
        result = getInitializedResult();
        compName = getVerifierContext().getComponentNameConstructor();
        
        if ((descriptor instanceof EjbSessionDescriptor)  ||
                (descriptor instanceof EjbEntityDescriptor)) {
            
            if(descriptor.getRemoteClassName() != null && !"".equals(descriptor.getRemoteClassName())) 
                commonToBothInterfaces(descriptor.getRemoteClassName(),descriptor);  
            if(descriptor.getLocalClassName() != null && !"".equals(descriptor.getLocalClassName())) 
                commonToBothInterfaces(descriptor.getLocalClassName(),descriptor);  

            Set<String> localAndRemoteInterfaces = descriptor.getLocalBusinessClassNames();
            localAndRemoteInterfaces.addAll(descriptor.getRemoteBusinessClassNames());
            
            for (String localOrRemoteIntf : localAndRemoteInterfaces) 
                commonToBothInterfaces(localOrRemoteIntf, descriptor);
        } 
        if(result.getStatus() != Result.FAILED) {
            addGoodDetails(result, compName);
            result.passed(smh.getLocalString
                    (getClass().getName() + ".passed",
                    "Proper declaration of business method(s) found."));
        }
        return result;
    }
    
    /** 
     * This method is responsible for the logic of the test. It is called for both local and remote interfaces.
     * @param intf or home Interface of the Ejb
     * @param descriptor the Enterprise Java Bean deployment descriptor
     * This parameter may be optional depending on the test 
     */
    
    private void commonToBothInterfaces(String intf, EjbDescriptor descriptor) {
        try {
            Class intfClass = Class.forName(intf, false, getVerifierContext().getClassLoader());
            
            for (Method remoteMethod : intfClass.getMethods()) {
                
                // we don't test the EJB methods
                if (remoteMethod.getDeclaringClass().getName().equals("javax.ejb.EJBObject")||
                        remoteMethod.getDeclaringClass().getName().equals("javax.ejb.EJBLocalObject")) 
                    continue;
                
                Class beanClass = Class.forName(descriptor.getEjbClassName(), 
                                                false, 
                                                getVerifierContext().getClassLoader());
                for (Method method : beanClass.getMethods()) {
                    if (method.getName().equals(remoteMethod.getName()) &&
                            Modifier.isStatic(method.getModifiers())) {
                        // The method must not be declared as static. 
                        addErrorDetails(result, compName);
                        result.failed(smh.getLocalString
                                (getClass().getName() + ".failed",
                                "Error: static business method [ {0} ] was found, " +
                                "but business method cannot be declared as static.",
                                new Object[] {method.getName()}));
                    }
                }
            }
            
        } catch (ClassNotFoundException e) {
            Verifier.debug(e);
            addErrorDetails(result, compName);
            result.failed(smh.getLocalString
                    (getClass().getName() + ".failedException",
                    "Error: Remote interface [ {0} ] or bean class [ {1} ] does " +
                    "not exist or is not loadable within bean [ {2} ].",
                    new Object[] {intf,descriptor.getEjbClassName(),descriptor.getName()}));
        }  
    }
}
