Examples of oracle.toplink.essentials.internal.sessions.AbstractSession

Package oracle.toplink.essentials.internal.sessions

Examples of oracle.toplink.essentials.internal.sessions.AbstractSession

oracle.toplink.essentials.internal.sessions.AbstractSession
Implementation of oracle.toplink.essentials.sessions.Session The public interface should be used by public API and testing, the implementation should be used internally. @see oracle.toplink.essentials.sessions.Session
Purpose: Define the interface and common protocol of a TopLink compliant session.
Description: The session is the primary interface into TopLink, the application should do all of its reading and writing of objects through the session. The session also manages transactions and units of work. Normally the session is passed and used by the application controler objects. Controler objects normally sit behind the GUI and perform the buiness processes required for the application, they should perform all explict database access and database access should be avoided from the domain object model. Do not use a globally accessable session instance, doing so does not allow for multiple sessions. Multiple sessions may required when performing things like data migration or multiple database access, as well the unit of work feature requires the usage of multiple session instances. Although session is abstract, any users of its subclasses should only cast the variables to Session to allow usage of any of its subclasses.
Responsibilities:
- Connecting/disconnecting.
- Reading and writing objects.
- Transaction and unit of work support.
- Identity maps and caching.
@see DatabaseSession

        Object valueOfSource = getRealCollectionAttributeValueFromObject(source, mergeManager.getSession());


        // There is a very special case when merging into the shared cache that the original
        // has been refreshed and now has non-instantiated indirection objects.
        // Force instantiation is not necessary and can cause problem with JTS drivers.
        AbstractSession mergeSession = mergeManager.getSession();
        Object valueOfTarget = getRealCollectionAttributeValueFromObject(target, mergeSession);
        ContainerPolicy containerPolicy = getContainerPolicy();
        boolean fireChangeEvents = false;
        if (! mergeManager.shouldMergeOriginalIntoWorkingCopy()){
             // if we are copying from original to clone then the source will be

View Full Code Here

    protected Object getInitialWriteValue(AbstractSession session) {
        if (usesLocalTime()) {
            return new Timestamp(System.currentTimeMillis());
        }
        if (usesServerTime()) {
            AbstractSession readSession = session.getSessionForClass(getDescriptor().getJavaClass());
            while (readSession.isUnitOfWork()) {
                readSession = ((UnitOfWorkImpl)readSession).getParent().getSessionForClass(getDescriptor().getJavaClass());
            }


            return readSession.getDatasourceLogin().getDatasourcePlatform().getTimestampFromServer(session, readSession.getName());
        }
        return null;


    }

View Full Code Here

        if (isReadObjectQuery() && isLockQuery()) {
            return null;
        }


        // follow the execution path in looking for the object.
        AbstractSession parentSession = unitOfWork.getParentIdentityMapSession(this);


        // assert parentSession != unitOfWork;
        Object result = checkEarlyReturn(parentSession, translationRow);


        if (result != null) {

View Full Code Here

        checkDescriptor(session);
        // This query is first prepared for global common state, this must be synced.
        if (!isPrePrepared()) {// Avoid the monitor is already prePrepare, must check again for concurrency.
            synchronized (this) {
                if (!isPrePrepared()) {
                    AbstractSession alreadySetSession = getSession();
                    setSession(session);// Session is required for some init stuff.
                    prePrepare();
                    setSession(alreadySetSession);
                    setIsPrePrepared(true);// MUST not set prepare until done as other thread may hit before finishing the prePrepare.
                }

View Full Code Here


            // PERF: Fixed to not query each unit of work cache (is not conforming),
            // avoid hashtable and primary key indexing.
            // At some point we may need to support some kind of in-memory with conforming option,
            // but we do not currently allow this.
            AbstractSession rootSession = session;
            while (rootSession.isUnitOfWork()) {
                rootSession = ((UnitOfWorkImpl)rootSession).getParent();
            }
            Vector allCachedVector = rootSession.getIdentityMapAccessor().getAllFromIdentityMap(getSelectionCriteria(), getReferenceClass(), translationRow, getInMemoryQueryIndirectionPolicy(), false);


            // Must ensure that all of the objects returned are correctly registered in the unit of work.
            if (session.isUnitOfWork()) {
                allCachedVector = ((UnitOfWorkImpl)session).registerAllObjects(allCachedVector);
            }

View Full Code Here

                    }
                }
            }
        } else {
            fromDatabase = new Vector(cp.sizeFor(result));
            AbstractSession sessionToUse = unitOfWork.getParent();
            for (Object iter = cp.iteratorFor(result); cp.hasNext(iter);) {
                Object object = cp.next(iter, sessionToUse);
                Object clone = conformIndividualResult(object, unitOfWork, arguments, selectionCriteriaClone, indexedInterimResult, buildDirectlyFromRows);
                if (clone != null) {
                    fromDatabase.addElement(clone);

View Full Code Here


        ContainerPolicy cp;
        cp = getContainerPolicy();


        Object clones = cp.containerInstance(cp.sizeFor(result));
        AbstractSession sessionToUse = unitOfWork.getParent();
        for (Object iter = cp.iteratorFor(result); cp.hasNext(iter);) {
            Object object = cp.next(iter, sessionToUse);
            Object clone = registerIndividualResult(object, unitOfWork, buildDirectlyFromRows, null);
            cp.addInto(clone, clones, unitOfWork);
        }

View Full Code Here

        if (hasParameters()) {
            StringWriter writer = new StringWriter();
            writer.write(getSQLString());
            writer.write(Helper.cr());
            if (hasParameters()) {
                AbstractSession session = null;
                if (getQuery() != null) {
                    session = getQuery().getSession();
                }
                appendLogParameters(getParameters(), accessor, writer, session);
            }

View Full Code Here

     * @exception  DatabaseException - an error has occurred on the database.
     */
    protected Object executeCall(DatasourceCall databaseCall) throws DatabaseException {
        // For CR 2923 must move to session we will execute call on now
        // so correct DatasourcePlatform used by translate. 
        AbstractSession sessionToUse = getSession().getExecutionSession(getQuery());
        DatasourceCall clonedCall = (DatasourceCall)databaseCall.clone();
        clonedCall.setQuery(getQuery());
        clonedCall.translate(getTranslationRow(), getModifyRow(), sessionToUse);
        return sessionToUse.executeCall(clonedCall, getTranslationRow(), getQuery());
    }

View Full Code Here

        //insert first, and then the LOb locator is retrieved and LOB data are written through
        //the locator.
        // 
        // Bug 2804663 - LOBValueWriter is no longer a singleton, so we execute any deferred
        // select calls through the DatabaseAccessor which holds the writer instance
        AbstractSession executionSession = getSession().getExecutionSession(getQuery());
        executionSession.getAccessor().flushSelectCalls(executionSession);
    }

View Full Code Here

0 1 2 3 4

TOP

Related Classes of oracle.toplink.essentials.internal.sessions.AbstractSession

oracle.toplink.essentials.descriptors.ClassDescriptor

oracle.toplink.essentials.descriptors.TimestampLockingPolicy

oracle.toplink.essentials.internal.databaseaccess.DatabaseCall

oracle.toplink.essentials.internal.descriptors.ObjectBuilder

oracle.toplink.essentials.internal.ejb.cmp3.base.PropertiesHandler

oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl

oracle.toplink.essentials.internal.expressions.SQLSelectStatement

oracle.toplink.essentials.internal.helper.ConcurrencyManager

oracle.toplink.essentials.internal.helper.LOBValueWriter

oracle.toplink.essentials.internal.indirection.DatabaseValueHolder

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.