Package org.eclipse.persistence.internal.identitymaps

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

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        Object domainObject = null;
        if (primaryKey == null) {
            this.activeCacheKey = null;
            return null;
        }
        CacheKey cacheKey = session.getIdentityMapAccessorInstance().getCacheKeyForObject(primaryKey, descriptor.getJavaClass(), descriptor, true);
        if (cacheKey != null) {
            if (cacheKey.acquireReadLockNoWait()) {
                domainObject = cacheKey.getObject();
                cacheKey.releaseReadLock();
            } else {
                if (!mergeManager.isTransitionedToDeferredLocks()) {
                    session.getIdentityMapAccessorInstance().getWriteLockManager().transitionToDeferredLocks(mergeManager);
                }
                cacheKey.acquireDeferredLock();
                domainObject = cacheKey.getObject();
                int tries = 0;
                while (domainObject == null) {
                    ++tries;
                    if (tries > MAX_TRIES){
                        session.getParent().log(SessionLog.SEVERE, SessionLog.CACHE, "entity_not_available_during_merge", new Object[]{descriptor.getJavaClassName(), cacheKey.getKey(), Thread.currentThread().getName(), cacheKey.getMutex().getActiveThread()});
                        break;
                    }
                    synchronized (cacheKey.getMutex()) {
                        if (cacheKey.isAcquired()) {
                            try {
                                cacheKey.getMutex().wait(10);
                            } catch (InterruptedException e) {
                                //ignore and return
                            }
                        }
                        domainObject = cacheKey.getObject();
                    }
                }
                cacheKey.releaseDeferredLock();
            }
        } else {
            domainObject = mergeManager.registerExistingObjectOfReadOnlyClassInNestedTransaction(getUnitOfWorkClone(), descriptor, session);
            // There is no need to get the cache key in this case because UOW is performing
            // a nested UOW merge, and no locking occurs.
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     */
    protected CacheKey buildWrapperCacheKeyForAggregate(CacheKey owningCacheKey, boolean targetIsProtected) {
        if (!targetIsProtected || this.isMapKeyMapping || (owningCacheKey == null)) {
            return owningCacheKey;
        }
        CacheKey aggregateKey = owningCacheKey;
        Object object = owningCacheKey.getObject();
        if (owningCacheKey.getObject() != null) {
            Object aggregate = getAttributeValueFromObject(object);
            aggregateKey = new CacheKey(null, aggregate, null);
            aggregateKey.setProtectedForeignKeys(owningCacheKey.getProtectedForeignKeys());
            aggregateKey.setRecord(owningCacheKey.getRecord());
            aggregateKey.setIsolated(owningCacheKey.isIsolated());
            aggregateKey.setReadTime(owningCacheKey.getReadTime());
        }
        return aggregateKey;
    }
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        if (xmlDescriptor.shouldPreserveDocument() || xmlDescriptor.getPrimaryKeyFieldNames().size() > 0) {
            if ((pk == null) || (pk.size() == 0)) {
                pk = new Vector();
                pk.addElement(new WeakObjectWrapper(obj));
            }
            CacheKey key = session.getIdentityMapAccessorInstance().acquireDeferredLock(pk, xmlDescriptor.getJavaClass(), xmlDescriptor);
            if ((xmlDescriptor).shouldPreserveDocument()) {
                key.setRecord(row);
            }
            key.setObject(obj);
            key.releaseDeferredLock();
        }
    }
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            Vector pk = xmlDescriptor.getObjectBuilder().extractPrimaryKeyFromObject(obj, session);
            if ((pk == null) || (pk.size() == 0)) {
                pk = new Vector();
                pk.addElement(new WeakObjectWrapper(obj));
            }
            CacheKey cacheKey = session.getIdentityMapAccessorInstance().getCacheKeyForObject(pk, xmlDescriptor.getJavaClass(), xmlDescriptor);
            if(cacheKey != null && cacheKey.getRecord() != null) {
                return ((DOMRecord)cacheKey.getRecord()).getDOM();
            }
        }
        return null;
    }
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    /**
     * Acquire an active lock on the object, if not already locked.
     * This is used by merge for missing existing objects.
     */
    public CacheKey acquireLockNoWait(Vector primaryKey, boolean forMerge){
        CacheKey cacheKeyToBeWrapped = this.targetIdentityMap.acquireLockNoWait(primaryKey, forMerge);
        if (cacheKeyToBeWrapped != null){
            return createCacheKeyInterceptor(cacheKeyToBeWrapped);
        }
        return null;
    }
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    /**
     * Acquire an active lock on the object, if not already locked.
     * This is used by merge for missing existing objects.
     */
    public CacheKey acquireLockWithWait(Vector primaryKey, boolean forMerge, int wait) {
        CacheKey cacheKeyToBeWrapped = this.targetIdentityMap.acquireLockWithWait(primaryKey, forMerge, wait);
        if (cacheKeyToBeWrapped != null) {
            return createCacheKeyInterceptor(cacheKeyToBeWrapped);
        }
        return null;
    }
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     * Acquire a read lock on the object, if not already locked.
     * This is used by UnitOfWork cloning.
     * This will allow multiple users to read the same object but prevent writes to the object while the read lock is held.
     */
    public CacheKey acquireReadLockOnCacheKeyNoWait(Vector primaryKey){
        CacheKey cacheKeyToBeWrapped = this.targetIdentityMap.acquireReadLockOnCacheKeyNoWait(primaryKey);
        if (cacheKeyToBeWrapped != null){
            return createCacheKeyInterceptor(cacheKeyToBeWrapped);
        }
        return null;
    }
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        }

        Vector primaryKey1 = this.getReferenceDescriptor().getObjectBuilder().extractPrimaryKeyFromObject(element1, session);
        Vector primaryKey2 = this.getReferenceDescriptor().getObjectBuilder().extractPrimaryKeyFromObject(element2, session);

        CacheKey cacheKey1 = new CacheKey(primaryKey1);
        CacheKey cacheKey2 = new CacheKey(primaryKey2);

        if (!cacheKey1.equals(cacheKey2)) {
            return false;
        }
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     * Assumes the transaction in in post commit stage.
     */
    public void putNewObjectInChangesList(ObjectChangeSet objectChangeSet, AbstractSession session) {
        // Must reset the cache key for new objects assigned in insert.
        if (objectChangeSet.getCacheKey() == null) {
            objectChangeSet.setCacheKey(new CacheKey(session.getDescriptor(objectChangeSet.getUnitOfWorkClone().getClass()).getObjectBuilder().extractPrimaryKeyFromObject(objectChangeSet.getUnitOfWorkClone(), session, false)));
        }
        this.addObjectChangeSet(objectChangeSet, session, false);
        removeObjectChangeSetFromNewList(objectChangeSet, session);
    }
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                objectChangeSet = (ObjectChangeSet)((UnitOfWorkImpl)getSession()).getUnitOfWorkChangeSet().getObjectChangeSetForClone(object);
            }
            if (objectChangeSet != null) {
                updateChangeSet(getDescriptor(), objectChangeSet, row, object);
                if (primaryKeys != null) {
                    objectChangeSet.setCacheKey(new CacheKey(primaryKeys));
                }
            }
        }
    }
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Related Classes of org.eclipse.persistence.internal.identitymaps.CacheKey

  • org.eclipse.persistence.descriptors.CachePolicy
  • org.eclipse.persistence.descriptors.VersionLockingPolicy
  • org.eclipse.persistence.eis.mappings.EISOneToManyMapping
  • org.eclipse.persistence.internal.jpa.CacheImpl
  • org.eclipse.persistence.internal.oxm.documentpreservation.DescriptorLevelDocumentPreservationPolicy
  • org.eclipse.persistence.internal.oxm.XMLObjectBuilder
  • org.eclipse.persistence.internal.queries.DatabaseQueryMechanism
  • org.eclipse.persistence.internal.queries.ExpressionQueryMechanism
  • org.eclipse.persistence.internal.queries.JoinedAttributeManager
  • org.eclipse.persistence.internal.sessions.IsolatedClientSession
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