Package org.datanucleus.store.connection

Examples of org.datanucleus.store.connection.ManagedConnection


            // Set the state to "inserting" (may already be at this state if multiple inheritance level INSERT)
            sm.changeActivityState(ActivityState.INSERTING);

            SQLController sqlControl = storeMgr.getSQLController();
            ManagedConnection mconn = storeMgr.getConnection(ec);
            try
            {
                PreparedStatement ps = sqlControl.getStatementForUpdate(mconn, insertStmt, batch);

                try
                {
                    StatementClassMapping mappingDefinition = new StatementClassMapping();
                    StatementMappingIndex[] idxs = stmtMappings;
                    for (int i=0;i<idxs.length;i++)
                    {
                        if (idxs[i] != null)
                        {
                            mappingDefinition.addMappingForMember(i, idxs[i]);
                        }
                    }

                    // Provide the primary key field(s)
                    if (table.getIdentityType() == IdentityType.DATASTORE)
                    {
                        if (!table.isObjectIdDatastoreAttributed() || !table.isBaseDatastoreClass())
                        {
                            int[] paramNumber = {IDPARAMNUMBER};
                            table.getDatastoreObjectIdMapping().setObject(ec, ps, paramNumber, sm.getInternalObjectId());
                        }
                    }
                    else if (table.getIdentityType() == IdentityType.APPLICATION)
                    {
                        sm.provideFields(pkFieldNumbers,
                            storeMgr.getFieldManagerForStatementGeneration(sm, ps, mappingDefinition, true));
                    }

                    // Provide all non-key fields needed for the insert.
                    // This provides "persistence-by-reachability" for these fields
                    int numberOfFieldsToProvide = 0;
                    for (int i = 0; i < insertFieldNumbers.length; i++)
                    {
                        if (insertFieldNumbers[i] < sm.getClassMetaData().getMemberCount())
                        {
                            numberOfFieldsToProvide++;
                        }
                    }
                    int j = 0;
                    int[] classFieldNumbers = new int[numberOfFieldsToProvide];
                    for (int i = 0; i < insertFieldNumbers.length; i++)
                    {
                        if (insertFieldNumbers[i] < sm.getClassMetaData().getMemberCount())
                        {
                            classFieldNumbers[j++] = insertFieldNumbers[i];
                        }
                    }
                    sm.provideFields(classFieldNumbers,
                        storeMgr.getFieldManagerForStatementGeneration(sm, ps, mappingDefinition, true));

                    if (table.getVersionMapping(false) != null)
                    {
                        // Surrogate version - set the new version for the object
                        Object currentVersion = ec.getApiAdapter().getVersion(sm);
                        Object nextOptimisticVersion = VersionHelper.getNextVersion(table.getVersionMetaData().getVersionStrategy(), currentVersion);
                        for (int k=0;k<versionStmtMapping.getNumberOfParameterOccurrences();k++)
                        {
                            table.getVersionMapping(false).setObject(ec, ps,
                                versionStmtMapping.getParameterPositionsForOccurrence(k), nextOptimisticVersion);
                        }
                        sm.setTransactionalVersion(nextOptimisticVersion);
                    }
                    else if (vermd != null && vermd.getFieldName() != null)
                    {
                        // Version field - set the new version for the object
                        Object currentVersion = ec.getApiAdapter().getVersion(sm);
                        Object nextOptimisticVersion = VersionHelper.getNextVersion(table.getVersionMetaData().getVersionStrategy(), currentVersion);
                        sm.setTransactionalVersion(nextOptimisticVersion);
                    }

                    // Discriminator mapping (optional)
                    if (table.getDiscriminatorMapping(false) != null)
                    {
                        DiscriminatorMetaData dismd = table.getDiscriminatorMetaData();
                        if (dismd.getStrategy() == DiscriminatorStrategy.CLASS_NAME)
                        {
                            for (int k=0;k<discriminatorStmtMapping.getNumberOfParameterOccurrences();k++)
                            {
                                table.getDiscriminatorMapping(false).setObject(ec, ps,
                                    discriminatorStmtMapping.getParameterPositionsForOccurrence(k),
                                    sm.getObject().getClass().getName());
                            }
                        }
                        else if (dismd.getStrategy() == DiscriminatorStrategy.VALUE_MAP)
                        {
                            // Use Discriminator info for the actual class
                            dismd = sm.getClassMetaData().getInheritanceMetaData().getDiscriminatorMetaData();
                            for (int k=0;k<discriminatorStmtMapping.getNumberOfParameterOccurrences();k++)
                            {
                                table.getDiscriminatorMapping(false).setObject(ec, ps,
                                    discriminatorStmtMapping.getParameterPositionsForOccurrence(k), dismd.getValue());
                            }
                        }
                    }

                    // External FK columns (optional)
                    if (externalFKStmtMappings != null)
                    {
                        for (int i=0;i<externalFKStmtMappings.length;i++)
                        {
                            Object fkValue = sm.getAssociatedValue(externalFKStmtMappings[i].getMapping());
                            if (fkValue != null)
                            {
                                // Need to provide the owner field number so PCMapping can work out if it is inserted yet
                                AbstractMemberMetaData ownerFmd =
                                    table.getMetaDataForExternalMapping(externalFKStmtMappings[i].getMapping(),
                                        MappingConsumer.MAPPING_TYPE_EXTERNAL_FK);
                                for (int k=0;k<externalFKStmtMappings[i].getNumberOfParameterOccurrences();k++)
                                {
                                    externalFKStmtMappings[i].getMapping().setObject(ec, ps,
                                        externalFKStmtMappings[i].getParameterPositionsForOccurrence(k),
                                        fkValue, null, ownerFmd.getAbsoluteFieldNumber());
                                }
                            }
                            else
                            {
                                // We're inserting a null so dont need the owner field
                                for (int k=0;k<externalFKStmtMappings[i].getNumberOfParameterOccurrences();k++)
                                {
                                    externalFKStmtMappings[i].getMapping().setObject(ec, ps,
                                        externalFKStmtMappings[i].getParameterPositionsForOccurrence(k), null);
                                }
                            }
                        }
                    }

                    // External FK discriminator columns (optional)
                    if (externalFKDiscrimStmtMappings != null)
                    {
                        for (int i=0;i<externalFKDiscrimStmtMappings.length;i++)
                        {
                            Object discrimValue = sm.getAssociatedValue(externalFKDiscrimStmtMappings[i].getMapping());
                            for (int k=0;k<externalFKDiscrimStmtMappings[i].getNumberOfParameterOccurrences();k++)
                            {
                                externalFKDiscrimStmtMappings[i].getMapping().setObject(ec, ps,
                                    externalFKDiscrimStmtMappings[i].getParameterPositionsForOccurrence(k), discrimValue);
                            }
                        }
                    }

                    // External order columns (optional)
                    if (externalOrderStmtMappings != null)
                    {
                        for (int i=0;i<externalOrderStmtMappings.length;i++)
                        {
                            Object orderValue = sm.getAssociatedValue(externalOrderStmtMappings[i].getMapping());
                            if (orderValue == null)
                            {
                                // No order value so use -1
                                orderValue = Integer.valueOf(-1);
                            }
                            for (int k=0;k<externalOrderStmtMappings[i].getNumberOfParameterOccurrences();k++)
                            {
                                externalOrderStmtMappings[i].getMapping().setObject(ec, ps,
                                    externalOrderStmtMappings[i].getParameterPositionsForOccurrence(k), orderValue);
                            }
                        }
                    }

                    sqlControl.executeStatementUpdate(mconn, insertStmt, ps, !batch);

                    if (hasIdentityColumn)
                    {
                        // Identity was set in the datastore using auto-increment/identity/serial etc
                        Object newId = getInsertedDatastoreIdentity(ec, sqlControl, sm, mconn, ps);
                        if (NucleusLogger.DATASTORE_PERSIST.isDebugEnabled())
                        {
                            NucleusLogger.DATASTORE_PERSIST.debug(LOCALISER.msg("052206",
                                sm.toPrintableID(), newId));
                        }
                        sm.setPostStoreNewObjectId(newId);
                    }

                    // Execute any mapping actions on the insert of the fields (e.g Oracle CLOBs/BLOBs)
                    for (int i = 0; i < callbacks.length; ++i)
                    {
                        if (NucleusLogger.PERSISTENCE.isDebugEnabled())
                        {
                            NucleusLogger.PERSISTENCE.debug(LOCALISER.msg("052222",
                                sm.toPrintableID(),
                                ((JavaTypeMapping)callbacks[i]).getMemberMetaData().getFullFieldName()));
                        }
                        callbacks[i].insertPostProcessing(sm);
                    }

                    // Update the insert status for this table via the StoreManager
                    storeMgr.setObjectIsInsertedToLevel(sm, table);

                    // Make sure all relation fields (1-1, N-1 with FK) we processed in the INSERT are attached.
                    // This is necessary because with a bidir relation and the other end attached we can just
                    // do the INSERT above first and THEN attach the other end here
                    // (if we did it the other way around we would get a NotYetFlushedException thrown above).
                    for (int i=0;i<relationFieldNumbers.length;i++)
                    {
                        Object value = sm.provideField(relationFieldNumbers[i]);
                        if (value != null && ec.getApiAdapter().isDetached(value))
                        {
                            Object valueAttached = ec.persistObjectInternal(value, null, -1, ObjectProvider.PC);
                            sm.replaceField(relationFieldNumbers[i], valueAttached);
                        }
                    }

                    // Perform reachability on all fields that have no datastore column (1-1 bi non-owner, N-1 bi join)
                    int numberOfReachableFields = 0;
                    for (int i = 0; i < reachableFieldNumbers.length; i++)
                    {
                        if (reachableFieldNumbers[i] < sm.getClassMetaData().getMemberCount())
                        {
                            numberOfReachableFields++;
                        }
                    }
                    classFieldNumbers = new int[numberOfReachableFields];
                    j = 0;
                    for (int i = 0; i < reachableFieldNumbers.length; i++)
                    {
                        if (reachableFieldNumbers[i] < sm.getClassMetaData().getMemberCount())
                        {
                            classFieldNumbers[j++] = reachableFieldNumbers[i];
                        }
                    }
                    mappingDefinition = new StatementClassMapping();
                    idxs = retrievedStmtMappings;
                    for (int i=0;i<idxs.length;i++)
                    {
                        if (idxs[i] != null)
                        {
                            mappingDefinition.addMappingForMember(i, idxs[i]);
                        }
                    }
                    sm.provideFields(classFieldNumbers,
                        storeMgr.getFieldManagerForStatementGeneration(sm, ps, mappingDefinition, true));
                }
                finally
                {
                    sqlControl.closeStatement(mconn, ps);
                }
            }
            finally
            {
                mconn.release();
            }
        }
        catch (SQLException e)
        {
            String msg = LOCALISER.msg("052208",
View Full Code Here


        boolean batched = allowsBatching() && length > 1;

        try
        {
            ExecutionContext ec = ownerSM.getExecutionContext();
            ManagedConnection mconn = storeMgr.getConnection(ec);
            try
            {
                getSpecialization().processBatchedWrites(mconn);

                // Loop through all elements to be added
                Object element = null;
                for (int i = 0; i < length; i++)
                {
                    element = Array.get(array, i);

                    try
                    {
                        // Add the row to the join table
                        int[] rc = getSpecialization().internalAdd(ownerSM, this, element, mconn, batched, i,
                            (i == length - 1));
                        if (rc != null)
                        {
                            for (int j = 0; j < rc.length; j++)
                            {
                                if (rc[j] > 0)
                                {
                                    // At least one record was inserted
                                    modified = true;
                                }
                            }
                        }
                    }
                    catch (MappedDatastoreException mde)
                    {
                        mde.printStackTrace();
                        exceptions.add(mde);
                        NucleusLogger.DATASTORE.error(mde);
                    }
                }
            }
            finally
            {
                mconn.release();
            }
        }
        catch (MappedDatastoreException e)
        {
            e.printStackTrace();
View Full Code Here

        boolean modified = false;

        try
        {
            ExecutionContext ec = sm.getExecutionContext();
            ManagedConnection mconn = storeMgr.getConnection(ec);

            try
            {
                // Add a row to the join table
                int[] returnCode = getSpecialization().internalAdd(sm, this, element, mconn, false, position,
                    true);
                if (returnCode[0] > 0)
                {
                    modified = true;
                }
            }
            finally
            {
                mconn.release();
            }
        }
        catch (MappedDatastoreException e)
        {
            throw new NucleusDataStoreException(LOCALISER.msg("056009", e.getMessage()), e.getCause());
View Full Code Here

        if (toBeInserted)
        {
            try
            {
                ExecutionContext ec = sm.getExecutionContext();
                ManagedConnection mconn = storeMgr.getConnection(ec);
                try
                {
                    // Add a row to the join table
                    int orderID = -1;
                    if (orderMapping != null)
                    {
                        orderID = getNextIDForOrderColumn(sm);
                    }
                    int[] returnCode = internalAdd(sm, element, mconn, false, orderID, true);
                    if (returnCode[0] > 0)
                    {
                        modified = true;
                    }
                }
                finally
                {
                    mconn.release();
                }
            }
            catch (MappedDatastoreException e)
            {
                NucleusLogger.DATASTORE.error(e);
View Full Code Here

        }

        try
        {
            ExecutionContext ec = sm.getExecutionContext();
            ManagedConnection mconn = storeMgr.getConnection(ec);
            try
            {
                preGetNextIDForOrderColumn(mconn);

                int nextOrderID = 0;
                if (orderMapping != null)
                {
                    // Get the order id for the first item
                    nextOrderID = getNextIDForOrderColumn(sm);
                }

                // Loop through all elements to be added
                iter = elements.iterator();
                Object element = null;
                while (iter.hasNext())
                {
                    element = iter.next();

                    try
                    {
                        // Add the row to the join table
                        int[] rc = internalAdd(sm, element, mconn, batched, nextOrderID, !batched || (batched && !iter.hasNext()));
                        if (rc != null)
                        {
                            for (int i = 0; i < rc.length; i++)
                            {
                                if (rc[i] > 0)
                                {
                                    // At least one record was inserted
                                    modified = true;
                                }
                            }
                        }
                        nextOrderID++;
                    }
                    catch (MappedDatastoreException mde)
                    {
                        exceptions.add(mde);
                        NucleusLogger.DATASTORE.error("Exception thrown", mde);
                    }
                }
            }
            finally
            {
                mconn.release();
            }
        }
        catch (MappedDatastoreException e)
        {
            exceptions.add(e);
View Full Code Here

            }
            String statement = (locked ? statementLocked : statementUnlocked);

            try
            {
                ManagedConnection mconn = storeMgr.getConnection(ec);
                SQLController sqlControl = storeMgr.getSQLController();

                try
                {
                    PreparedStatement ps = sqlControl.getStatementForQuery(mconn, statement);

                    AbstractClassMetaData cmd = sm.getClassMetaData();
                    try
                    {
                        // Provide the primary key field(s)
                        if (cmd.getIdentityType() == IdentityType.DATASTORE)
                        {
                            StatementMappingIndex datastoreIdx = mappingDefinition.getMappingForMemberPosition(
                                StatementClassMapping.MEMBER_DATASTORE_ID);
                            for (int i=0;i<datastoreIdx.getNumberOfParameterOccurrences();i++)
                            {
                                table.getDatastoreObjectIdMapping().setObject(ec, ps,
                                    datastoreIdx.getParameterPositionsForOccurrence(i), sm.getInternalObjectId());
                            }
                        }
                        else if (cmd.getIdentityType() == IdentityType.APPLICATION)
                        {
                            sm.provideFields(cmd.getPKMemberPositions(),
                                storeMgr.getFieldManagerForStatementGeneration(sm, ps, mappingDefinition, false));
                        }

                        // Execute the statement
                        ResultSet rs = sqlControl.executeStatementQuery(mconn, statement, ps);
                        try
                        {
                            if (!rs.next())
                            {
                                NucleusLogger.DATASTORE_RETRIEVE.info(LOCALISER.msg("050018",
                                    sm.getInternalObjectId()));
                                throw new NucleusObjectNotFoundException("No such database row", sm.getInternalObjectId());
                            }
                        }
                        finally
                        {
                            rs.close();
                        }
                    }
                    finally
                    {
                        sqlControl.closeStatement(mconn, ps);
                    }
                }
                finally
                {
                    mconn.release();
                }
            }
            catch (SQLException sqle)
            {
                String msg = LOCALISER.msg("052220", sm.toPrintableID(), statement, sqle.getMessage());
View Full Code Here

        }

        // Process the delete of this object
        try
        {
            ManagedConnection mconn = storeMgr.getConnection(ec);
            SQLController sqlControl = storeMgr.getSQLController();

            try
            {
                // Perform the delete
                boolean batch = true;
                if (optimisticChecks || !ec.getTransaction().isActive())
                {
                    // Turn OFF batching if doing optimistic checks (since we need the result of the delete)
                    // or if using nontransactional writes (since we want it sending to the datastore now)
                    batch = false;
                }
                PreparedStatement ps = sqlControl.getStatementForUpdate(mconn, stmt, batch);
                try
                {
                    // provide primary key field(s)
                    if (cmd.getIdentityType() == IdentityType.DATASTORE)
                    {
                        StatementMappingIndex mapIdx = mappingStatementIndex.getDatastoreId();
                        for (int i=0;i<mapIdx.getNumberOfParameterOccurrences();i++)
                        {
                            table.getDatastoreObjectIdMapping().setObject(ec, ps,
                                mapIdx.getParameterPositionsForOccurrence(i), sm.getInternalObjectId());
                        }
                    }
                    else if (cmd.getIdentityType() == IdentityType.APPLICATION)
                    {
                        StatementClassMapping mappingDefinition = new StatementClassMapping();
                        StatementMappingIndex[] idxs = mappingStatementIndex.getPrimaryKeys();
                        for (int i=0;i<idxs.length;i++)
                        {
                            if (idxs[i] != null)
                            {
                                mappingDefinition.addMappingForMember(i, idxs[i]);
                            }
                        }
                        sm.provideFields(pkFieldNumbers,
                            storeMgr.getFieldManagerForStatementGeneration(sm, ps, mappingDefinition, true));
                    }

                    if (optimisticChecks)
                    {
                        // WHERE clause - current version discriminator
                        JavaTypeMapping verMapping = mappingStatementIndex.getVersion2().getMapping();
                        Object currentVersion = sm.getTransactionalVersion();
                        if (currentVersion == null)
                        {
                            // Somehow the version is not set on this object (not read in ?) so report the bug
                            String msg = LOCALISER.msg("052202",
                                sm.getInternalObjectId(), table);
                            NucleusLogger.PERSISTENCE.error(msg);
                            throw new NucleusException(msg);
                        }
                        StatementMappingIndex mapIdx = mappingStatementIndex.getVersion2();
                        for (int i=0;i<mapIdx.getNumberOfParameterOccurrences();i++)
                        {
                            verMapping.setObject(ec, ps,
                                mapIdx.getParameterPositionsForOccurrence(i), currentVersion);
                        }
                    }

                    int[] rcs = sqlControl.executeStatementUpdate(mconn, stmt, ps, !batch);
                    if (optimisticChecks && rcs[0] == 0)
                    {
                        // No object deleted so either object disappeared or failed optimistic version checks
                        String msg = LOCALISER.msg("052203",
                            sm.toPrintableID(), sm.getInternalObjectId(),
                            "" + sm.getTransactionalVersion());
                        NucleusLogger.DATASTORE.error(msg);
                        throw new NucleusOptimisticException(msg, sm.getObject());
                    }

                    if (relatedObjectsToDelete != null && !relatedObjectsToDelete.isEmpty())
                    {
                        // Delete any related objects that need deleting after the delete of this object
                        Iterator iter = relatedObjectsToDelete.iterator();
                        while (iter.hasNext())
                        {
                            Object relatedObject = iter.next();
                            ec.deleteObjectInternal(relatedObject);
                        }
                    }
                }
                finally
                {
                    sqlControl.closeStatement(mconn, ps);
                }
            }
            finally
            {
                mconn.release();
            }
        }
        catch (SQLException e)
        {
            String msg = LOCALISER.msg("052211",
View Full Code Here

                    clearLinkStmt.append("=?");
                }

                try
                {
                    ManagedConnection mconn = storeMgr.getConnection(ec);
                    SQLController sqlControl = storeMgr.getSQLController();
                    try
                    {
                        // Null out the relationship to the object being deleted.
                        PreparedStatement ps = null;
                        try
                        {
                            ps = sqlControl.getStatementForUpdate(mconn, clearLinkStmt.toString(), false);
                            refMapping.setObject(ec, ps, MappingHelper.getMappingIndices(1, refMapping), sm.getObject());

                            sqlControl.executeStatementUpdate(mconn, clearLinkStmt.toString(), ps, true);
                        }
                        finally
                        {
                            if (ps != null)
                            {
                                sqlControl.closeStatement(mconn, ps);
                            }
                        }
                    }
                    finally
                    {
                        mconn.release();
                    }
                }
                catch (Exception e)
                {
                    e.printStackTrace();
View Full Code Here

                mappingDef = mappingDefinition.cloneStatementMappingWithoutChildren();
            }*/

            try
            {
                ManagedConnection mconn = storeMgr.getConnection(ec);
                SQLController sqlControl = storeMgr.getSQLController();

                try
                {
                    PreparedStatement ps = sqlControl.getStatementForQuery(mconn, statement);

                    AbstractClassMetaData cmd = sm.getClassMetaData();
                    try
                    {
                        // Provide the primary key field(s) to the JDBC statement
                        if (cmd.getIdentityType() == IdentityType.DATASTORE)
                        {
                            StatementMappingIndex datastoreIdx = mappingDef.getMappingForMemberPosition(
                                StatementClassMapping.MEMBER_DATASTORE_ID);
                            for (int i=0;i<datastoreIdx.getNumberOfParameterOccurrences();i++)
                            {
                                table.getDatastoreObjectIdMapping().setObject(ec, ps,
                                    datastoreIdx.getParameterPositionsForOccurrence(i), sm.getInternalObjectId());
                            }
                        }
                        else if (cmd.getIdentityType() == IdentityType.APPLICATION)
                        {
                            sm.provideFields(cmd.getPKMemberPositions(),
                                storeMgr.getFieldManagerForStatementGeneration(sm, ps, mappingDef, false));
                        }

                        // Execute the statement
                        ResultSet rs = sqlControl.executeStatementQuery(mconn, statement, ps);
                        try
                        {
                            // Check for failure to find the object
                            if (!rs.next())
                            {
                                if (NucleusLogger.DATASTORE_RETRIEVE.isInfoEnabled())
                                {
                                    NucleusLogger.DATASTORE_RETRIEVE.info(LOCALISER.msg("050018",
                                        sm.getInternalObjectId()));
                                }
                                throw new NucleusObjectNotFoundException("No such database row",
                                    sm.getInternalObjectId());
                            }

                            // Copy the results into the object
                            sm.replaceFields(memberNumbersToFetch,
                                storeMgr.getFieldManagerForResultProcessing(sm, rs, mappingDef));

                            if (sm.getTransactionalVersion() == null)
                            {
                                // Object has no version set so update it from this fetch
                                Object datastoreVersion = null;
                                if (fetchingSurrogateVersion)
                                {
                                    // Surrogate version column - get from the result set using the version mapping
                                    StatementMappingIndex verIdx =
                                        mappingDef.getMappingForMemberPosition(
                                            StatementClassMapping.MEMBER_VERSION);
                                    datastoreVersion = table.getVersionMapping(true).getObject(ec, rs,
                                        verIdx.getColumnPositions());
                                }
                                else if (versionFieldName != null)
                                {
                                    // Version field - now populated in the field in the object from the results
                                    datastoreVersion = sm.provideField(cmd.getAbsolutePositionOfMember(versionFieldName));
                                }
                                sm.setVersion(datastoreVersion);
                            }
                        }
                        finally
                        {
                            rs.close();
                        }
                    }
                    finally
                    {
                        sqlControl.closeStatement(mconn, ps);
                    }
                }
                finally
                {
                    mconn.release();
                }
            }
            catch (SQLException sqle)
            {
                String msg = LOCALISER.msg("052219",
View Full Code Here

     * @param id The identity
     * @return The class name of the object it corresponds to
     */
    public String getClassNameForIdentity(ExecutionContext ec, String[] possibleNames, Object id)
    {
        ManagedConnection mconn = getConnection(ec);
        String expression = null;
        try
        {
            Document doc = (Document) mconn.getConnection();

            ClassLoaderResolver clr = ec.getClassLoaderResolver();
            XPath xpath = XPathFactory.newInstance().newXPath();
            for (int i=0;i<possibleNames.length;i++)
            {
                // Try to find an object of this possible class with the id
                AbstractClassMetaData acmd = getMetaDataManager().getMetaDataForClass(possibleNames[i], clr);
                expression = XMLUtils.getXPathForClass(acmd);
                if (expression == null)
                {
                    if (doc.getDocumentElement() != null)
                    {
                        expression = "/" + doc.getDocumentElement().getNodeName();
                    }
                    else
                    {
                        // No root, so can't have an object
                        continue;
                    }
                }
                expression += "/" + XMLUtils.getElementNameForClass(acmd);
                String[] pk = acmd.getPrimaryKeyMemberNames();
                for (int j=0; j<pk.length; j++)
                {
                    AbstractMemberMetaData pkmmd = acmd.getMetaDataForMember(pk[j]);
                    String pkElement = XMLUtils.getElementNameForMember(pkmmd, FieldRole.ROLE_FIELD);
                    Object obj = ec.getApiAdapter().getTargetKeyForSingleFieldIdentity(id);
                    expression += "/" + pkElement + "/text()='" + obj.toString() + "'";
                }

                if ((Boolean)xpath.evaluate(expression, doc, XPathConstants.BOOLEAN))
                {
                    return possibleNames[i];
                }
            }
        }
        catch (Exception e)
        {
            return null;
        }
        finally
        {
            mconn.release();
        }
        return null;
    }
View Full Code Here

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