Package org.datanucleus.store

Examples of org.datanucleus.store.ExecutionContext

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     * Method to return an iterator to the array.
     * @param ownerSM StateManager for the owner of the array
     */
    public Iterator iterator(ObjectProvider ownerSM)
    {
        ExecutionContext ec = ownerSM.getExecutionContext();
        if (iteratorStmtLocked == null)
        {
            synchronized (this) // Make sure this completes in case another thread needs the same info
            {
                // Generate the statement, and statement mapping/parameter information
                SQLStatement sqlStmt = getSQLStatementForIterator(ownerSM);
                iteratorStmtUnlocked = sqlStmt.getSelectStatement().toSQL();
                sqlStmt.addExtension("lock-for-update", true);
                iteratorStmtLocked = sqlStmt.getSelectStatement().toSQL();
            }
        }

        Transaction tx = ec.getTransaction();
        String stmt = (tx.lockReadObjects() ? iteratorStmtLocked : iteratorStmtUnlocked);
        try
        {
            ManagedConnection mconn = storeMgr.getConnection(ec);
            SQLController sqlControl = ((RDBMSStoreManager)storeMgr).getSQLController();
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        String removeAllStmt = getRemoveAllStmt(elements, ecs);
        SQLController sqlControl = storeMgr.getSQLController();
        try
        {
            ExecutionContext ec = sm.getExecutionContext();
            ManagedConnection mconn = storeMgr.getConnection(ec);
            try
            {
                PreparedStatement ps = sqlControl.getStatementForUpdate(mconn, removeAllStmt, false);
                try
                {
                    int jdbcPosition = 1;
                    Iterator iter = elements.iterator();
                    while (iter.hasNext())
                    {
                        Object element = iter.next();
                        jdbcPosition = BackingStoreHelper.populateOwnerInStatement(sm, ec, ps, jdbcPosition, ecs);
                        jdbcPosition = BackingStoreHelper.populateElementInStatement(ec, ps, element, jdbcPosition, elementMapping);
                        if (relationDiscriminatorMapping != null)
                        {
                            jdbcPosition =
                                BackingStoreHelper.populateRelationDiscriminatorInStatement(ec, ps, jdbcPosition, ecs);
                        }
                    }

                    int[] number = sqlControl.executeStatementUpdate(mconn, removeAllStmt, ps, true);
                    if (number[0] > 0)
                    {
                        modified = true;
                    }
                }
                finally
                {
                    sqlControl.closeStatement(mconn, ps);
                }
            }
            finally
            {
                mconn.release();
            }
        }
        catch (SQLException e)
        {
            NucleusLogger.DATASTORE.error(e);
            throw new NucleusDataStoreException(localiser.msg("056012", removeAllStmt), e);
        }

        try
        {
            // Shift the remaining indices to remove the holes in ordering
            boolean batched = storeMgr.allowsBatching();

            ExecutionContext ec = sm.getExecutionContext();
            ManagedConnection mconn = storeMgr.getConnection(ec);
            try
            {
                for (int i = 0; i < currentListSize; i++)
                {
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        JavaTypeMapping relationDiscriminatorMapping = ecs.getRelationDiscriminatorMapping();

        String setStmt = getSetStmt(ecs);
        try
        {
            ExecutionContext ec = sm.getExecutionContext();
            ManagedConnection mconn = ecs.getStoreManager().getConnection(ec);
            SQLController sqlControl = storeMgr.getSQLController();
            try
            {
                PreparedStatement ps = sqlControl.getStatementForUpdate(mconn, setStmt, false);
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        }

        String addStmt = getAddStmt(ecs);
        try
        {
            ExecutionContext ec = sm.getExecutionContext();
            ManagedConnection mconn = ecs.getStoreManager().getConnection(ec);
            SQLController sqlControl = storeMgr.getSQLController();
            try
            {
                // Shift any existing elements so that we can insert the new element(s) at their position
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     * @param endIdx End index in the list (only for indexed lists).
     * @return The List Iterator
     */
    protected ListIterator listIterator(ObjectProvider ownerSM, int startIdx, int endIdx)
    {
        ExecutionContext ec = ownerSM.getExecutionContext();
        Transaction tx = ec.getTransaction();
        boolean useUpdateLock = tx.lockReadObjects();

        StatementClassMapping resultDefinition = null;
        StatementParameterMapping paramDefinition = null;
        String stmt = null;
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            // Already disconnected
            return null;
        }

        // Convert this row into its associated object and save it
        ExecutionContext ec = query.getExecutionContext();
        Object nextElement = rof.getObject(ec, rs);
        JDBCUtils.logWarnings(rs);
        resultObjs.add(nextElement);
        if (resultIds != null)
        {
            resultIds.add(ec.getApiAdapter().getIdForObject(nextElement));
        }

        // Update the status of whether there are more results outstanding
        if (rs == null)
        {
            throw new NucleusUserException(
                "Results for query have already been closed. Perhaps you called flush(), closed the query, or ended a transaction");
        }
        try
        {
            moreResultSetRows = rs.next();
            if (applyRangeChecks())
            {
                // Check if we have reached the end of the range
                int maxElements = (int)(query.getRangeToExcl() - query.getRangeFromIncl());
                if (resultObjs.size() == maxElements)
                {
                    moreResultSetRows = false;
                }
            }

            if (!moreResultSetRows)
            {
                closeResults();
            }
        }
        catch (SQLException e)
        {
            throw ec.getApiAdapter().getDataStoreExceptionForException(LOCALISER.msg("052601",e.getMessage()), e);
        }

        return nextElement;
    }
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     * @param ownerSM State Manager for the set.
     * @return Iterator for the set.
     */
    public Iterator iterator(ObjectProvider ownerSM)
    {
        ExecutionContext ec = ownerSM.getExecutionContext();
        if (iteratorStmtLocked == null)
        {
            synchronized (this) // Make sure this completes in case another thread needs the same info
            {
                // Generate the statement, and statement mapping/parameter information
                SQLStatement sqlStmt = getSQLStatementForIterator(ownerSM);
                iteratorStmtUnlocked = sqlStmt.getSelectStatement().toSQL();
                sqlStmt.addExtension("lock-for-update", true);
                iteratorStmtLocked = sqlStmt.getSelectStatement().toSQL();
            }
        }

        Transaction tx = ec.getTransaction();
        String stmt = (tx.lockReadObjects() ? iteratorStmtLocked : iteratorStmtUnlocked);
        try
        {
            ManagedConnection mconn = storeMgr.getConnection(ec);
            SQLController sqlControl = ((RDBMSStoreManager)storeMgr).getSQLController();
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        JavaTypeMapping elementMapping = ecs.getElementMapping();
        JavaTypeMapping relationDiscriminatorMapping = ecs.getRelationDiscriminatorMapping();

        try
        {
            ExecutionContext ec = sm.getExecutionContext();
            ManagedConnection mconn = ecs.getStoreManager().getConnection(ec);
            SQLController sqlControl = storeMgr.getSQLController();
            try
            {
                // Unset the existing object from this position
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        boolean modified = false;

        String removeAllStmt = getRemoveAllStmt(sm, elements);
        try
        {
            ExecutionContext ec = sm.getExecutionContext();
            ManagedConnection mconn = getStoreMgr().getConnection(ec);
            SQLController sqlControl = getStoreMgr().getSQLController();
            try
            {
                PreparedStatement ps = sqlControl.getStatementForUpdate(mconn, removeAllStmt, false);
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    {
        boolean exists = true;
        String stmt = getLocateStmt();
        try
        {
            ExecutionContext ec = sm.getExecutionContext();
            ManagedConnection mconn = getStoreMgr().getConnection(ec);
            SQLController sqlControl = getStoreMgr().getSQLController();
            try
            {
                PreparedStatement ps = sqlControl.getStatementForQuery(mconn, stmt);
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Related Classes of org.datanucleus.store.ExecutionContext

  • org.datanucleus.api.jdo.JDOCallbackHandler
  • org.datanucleus.api.jdo.NucleusJDOHelper
  • org.datanucleus.api.jpa.JPACallbackHandler
  • org.datanucleus.api.jpa.JPAEntityManagerFactory
  • org.datanucleus.ObjectManagerImpl
  • org.datanucleus.store.fieldmanager.AttachFieldManager
  • org.datanucleus.store.fieldmanager.LoadFieldManager
  • org.datanucleus.store.mapped.mapping.CollectionMapping
  • org.datanucleus.store.mapped.mapping.MapMapping
  • org.datanucleus.store.mapped.mapping.MultiMapping
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