Examples of org.eclipse.persistence.internal.identitymaps.IdentityMap

Package org.eclipse.persistence.internal.identitymaps

Examples of org.eclipse.persistence.internal.identitymaps.IdentityMap

org.eclipse.persistence.internal.identitymaps.IdentityMap

Purpose: Provides the interface for IdentityMap interaction.
Responsibilities: Provides access to all of the public interface for the EclipseLink IdentityMaps. This interface can be used if implementing custom identity maps that are radically different than the stock IdentityMaps otherwise simply extending the appropriate IdentityMap implementation is the best approach. @see CacheKey @since EclipseLink 1.0M7

     * @param className the fully qualified classname identifying the identity map
     * @exception  thrown then the IdentityMap for that class name could not be found
     */
     public void printObjectsInIdentityMap(String className) throws ClassNotFoundException {
         Class classWithMap = (Class)getSession().getDatasourcePlatform().getConversionManager().convertObject(className, ClassConstants.CLASS);
         IdentityMap map = getSession().getIdentityMapAccessorInstance().getIdentityMap(classWithMap);


         //check if the identity map exists
         if (null == map) {
             ((AbstractSession)session).log(SessionLog.INFO, SessionLog.SERVER, "jmx_mbean_runtime_services_identity_map_non_existent", className);
             return;
         }


         //check if there are any objects in the identity map. Print if so.
         Enumeration objects = map.keys();
         if (!objects.hasMoreElements()) {
             ((AbstractSession)session).log(SessionLog.INFO, SessionLog.SERVER, "jmx_mbean_runtime_services_identity_map_empty", className);
         }


         CacheKey cacheKey;

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         //get each identity map, and log the type
         for (int index = 0; index < classesRegistered.size(); index++) {
             registeredClassName = (String)classesRegistered.elementAt(index);
             registeredClass = (Class)getSession().getDatasourcePlatform().getConversionManager().convertObject(registeredClassName, ClassConstants.CLASS);
             IdentityMap map = getSession().getIdentityMapAccessorInstance().getIdentityMap(registeredClass);
             ((AbstractSession)session).log(SessionLog.INFO, SessionLog.SERVER, "jmx_mbean_runtime_services_identity_map_class", 
                     registeredClassName, map.getClass());
         }
     }

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      * @return HashMap
      */
     private HashMap buildLowlevelDetailsFor(String mappedClassName) {
         Class mappedClass = (Class)getSession().getDatasourcePlatform().getConversionManager().convertObject(mappedClassName, ClassConstants.CLASS);
         IdentityMap identityMap = getSession().getIdentityMapAccessorInstance().getIdentityMap(mappedClass);
         ClassDescriptor descriptor = getSession().getProject().getDescriptor(mappedClass);


         String cacheType = getCacheTypeFor(identityMap.getClass());
         String configuredSize = "" + identityMap.getMaxSize();
         String currentSize = "";


         //show the current size, including subclasses 
         currentSize = "" + identityMap.getSize(mappedClass, true);


         String parentClassName = "";


         boolean isChildDescriptor = descriptor.isChildDescriptor();

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     * @param className the fully qualified classname of the class to the instances of
     * @exception  thrown then the IdentityMap for that class name could not be found
     */
    public List getObjectsInIdentityMap(String className) throws ClassNotFoundException {
        Class classToChange = (Class)getSession().getDatasourcePlatform().getConversionManager().convertObject(className, ClassConstants.CLASS);
        IdentityMap map = getSession().getIdentityMapAccessorInstance().getIdentityMap(classToChange);


        Vector results = new Vector(map.getSize());
        Enumeration objects = map.keys();
        while (objects.hasMoreElements()) {
            results.add(((CacheKey)objects.nextElement()).getObject());
        }
        return results;
    }

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     * @param className the fully qualified name of the class to get number of instances of.
     * @exception  thrown then the IdentityMap for that class name could not be found
     */
    public List getObjectsInIdentityMapSubCacheAsMap(String className) throws ClassNotFoundException {
        Class classToChange = (Class)getSession().getDatasourcePlatform().getConversionManager().convertObject(className, ClassConstants.CLASS);
        IdentityMap map = getSession().getIdentityMapAccessorInstance().getIdentityMap(classToChange);


        //CR3855
        List subCache = new ArrayList(0);
        if (ClassConstants.HardCacheWeakIdentityMap_Class.isAssignableFrom(map.getClass())) {
            subCache = ((HardCacheWeakIdentityMap)map).getReferenceCache();
        }
        return subCache;
    }

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     */
    public Integer getNumberOfObjectsInIdentityMapSubCache(String className) throws ClassNotFoundException {
        //This needs to use the Session's active class loader (not implemented yet)
        Integer result = Integer.valueOf(0);
        Class classToChange = (Class)getSession().getDatasourcePlatform().getConversionManager().convertObject(className, ClassConstants.CLASS);
        IdentityMap map = getSession().getIdentityMapAccessorInstance().getIdentityMap(classToChange);
        if (map.getClass().isAssignableFrom(ClassConstants.HardCacheWeakIdentityMap_Class)) {
            List subCache = ((HardCacheWeakIdentityMap)map).getReferenceCache();
            result = Integer.valueOf(subCache.size());
        }
        return result;
    }

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     * @param className the fully qualified classname identifying the identity map
     * @exception  thrown then the IdentityMap for that class name could not be found
     */
     public void printObjectsInIdentityMap(String className) throws ClassNotFoundException {
         Class classWithMap = (Class)getSession().getDatasourcePlatform().getConversionManager().convertObject(className, ClassConstants.CLASS);
         IdentityMap map = getSession().getIdentityMapAccessorInstance().getIdentityMap(classWithMap);


         //check if the identity map exists
         if (null == map) {
             ((AbstractSession)session).log(SessionLog.INFO, SessionLog.SERVER, "jmx_mbean_runtime_services_identity_map_non_existent", className);
             return;
         }


         //check if there are any objects in the identity map. Print if so.
         Enumeration objects = map.keys();
         if (!objects.hasMoreElements()) {
             ((AbstractSession)session).log(SessionLog.INFO, SessionLog.SERVER, "jmx_mbean_runtime_services_identity_map_empty", className);
         }


         CacheKey cacheKey;

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         //get each identity map, and log the type
         for (int index = 0; index < classesRegistered.size(); index++) {
             registeredClassName = (String)classesRegistered.elementAt(index);
             registeredClass = (Class)getSession().getDatasourcePlatform().getConversionManager().convertObject(registeredClassName, ClassConstants.CLASS);
             IdentityMap map = getSession().getIdentityMapAccessorInstance().getIdentityMap(registeredClass);
             ((AbstractSession)session).log(SessionLog.INFO, SessionLog.SERVER, "jmx_mbean_runtime_services_identity_map_class", 
                     registeredClassName, map.getClass());
         }
     }

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      * @return HashMap
      */
     private HashMap buildLowlevelDetailsFor(String mappedClassName) {
         Class mappedClass = (Class)getSession().getDatasourcePlatform().getConversionManager().convertObject(mappedClassName, ClassConstants.CLASS);
         IdentityMap identityMap = getSession().getIdentityMapAccessorInstance().getIdentityMap(mappedClass);
         ClassDescriptor descriptor = getSession().getProject().getDescriptor(mappedClass);


         String cacheType = getCacheTypeFor(identityMap.getClass());
         String configuredSize = "" + identityMap.getMaxSize();
         String currentSize = "";


         //show the current size, including subclasses 
         currentSize = "" + identityMap.getSize(mappedClass, true);


         String parentClassName = "";


         boolean isChildDescriptor = descriptor.isChildDescriptor();

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     * @return HashMap
     */
    private HashMap buildLowlevelDetailsFor(String mappedClassName) {
        Class mappedClass = (Class)getSession().getDatasourcePlatform().getConversionManager().convertObject(mappedClassName, ClassConstants.CLASS);
        IdentityMap identityMap = getSession().getIdentityMapAccessorInstance().getIdentityMap(mappedClass);
        ClassDescriptor descriptor = getSession().getProject().getDescriptor(mappedClass);


        String cacheType = getCacheTypeFor(identityMap.getClass());
        String configuredSize = "" + identityMap.getMaxSize();
        String currentSize = "";


        //show the current size, including subclasses 
        currentSize = "" + identityMap.getSize(mappedClass, true);


        String parentClassName = "";


        boolean isChildDescriptor = descriptor.isChildDescriptor();

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