Examples with ViewMetadata org.apache.cassandra.schema.ViewMetadata used on opensource projects

Example 1 with ViewMetadata

use of org.apache.cassandra.schema.ViewMetadata in project cassandra by apache.

the class AlterTableStatement method announceMigration.

public Event.SchemaChange announceMigration(QueryState queryState, boolean isLocalOnly) throws RequestValidationException {
    TableMetadata current = Schema.instance.validateTable(keyspace(), columnFamily());
    if (current.isView())
        throw new InvalidRequestException("Cannot use ALTER TABLE on Materialized View");
    TableMetadata.Builder builder = current.unbuild();
    ColumnIdentifier columnName = null;
    ColumnMetadata def = null;
    CQL3Type.Raw dataType = null;
    boolean isStatic = false;
    CQL3Type validator = null;
    List<ViewMetadata> viewUpdates = new ArrayList<>();
    Iterable<ViewMetadata> views = View.findAll(keyspace(), columnFamily());
    switch(oType) {
        case ALTER:
            throw new InvalidRequestException("Altering of types is not allowed");
        case ADD:
            if (current.isDense())
                throw new InvalidRequestException("Cannot add new column to a COMPACT STORAGE table");
            for (AlterTableStatementColumn colData : colNameList) {
                columnName = colData.getColumnName().getIdentifier(current);
                def = builder.getColumn(columnName);
                dataType = colData.getColumnType();
                assert dataType != null;
                isStatic = colData.getStaticType();
                validator = dataType.prepare(keyspace());
                if (isStatic) {
                    if (!current.isCompound())
                        throw new InvalidRequestException("Static columns are not allowed in COMPACT STORAGE tables");
                    if (current.clusteringColumns().isEmpty())
                        throw new InvalidRequestException("Static columns are only useful (and thus allowed) if the table has at least one clustering column");
                }
                if (def != null) {
                    switch(def.kind) {
                        case PARTITION_KEY:
                        case CLUSTERING:
                            throw new InvalidRequestException(String.format("Invalid column name %s because it conflicts with a PRIMARY KEY part", columnName));
                        default:
                            throw new InvalidRequestException(String.format("Invalid column name %s because it conflicts with an existing column", columnName));
                    }
                }
                // Cannot re-add a dropped counter column. See #7831.
                if (current.isCounter() && current.getDroppedColumn(columnName.bytes) != null)
                    throw new InvalidRequestException(String.format("Cannot re-add previously dropped counter column %s", columnName));
                AbstractType<?> type = validator.getType();
                if (type.isCollection() && type.isMultiCell()) {
                    if (!current.isCompound())
                        throw new InvalidRequestException("Cannot use non-frozen collections in COMPACT STORAGE tables");
                    if (current.isSuper())
                        throw new InvalidRequestException("Cannot use non-frozen collections with super column families");
                    // If there used to be a non-frozen collection column with the same name (that has been dropped),
                    // we could still have some data using the old type, and so we can't allow adding a collection
                    // with the same name unless the types are compatible (see #6276).
                    DroppedColumn dropped = current.droppedColumns.get(columnName.bytes);
                    if (dropped != null && dropped.column.type instanceof CollectionType && dropped.column.type.isMultiCell() && !type.isCompatibleWith(dropped.column.type)) {
                        String message = String.format("Cannot add a collection with the name %s because a collection with the same name" + " and a different type (%s) has already been used in the past", columnName, dropped.column.type.asCQL3Type());
                        throw new InvalidRequestException(message);
                    }
                }
                builder.addColumn(isStatic ? ColumnMetadata.staticColumn(current, columnName.bytes, type) : ColumnMetadata.regularColumn(current, columnName.bytes, type));
                // as well
                if (!isStatic)
                    for (ViewMetadata view : views) if (view.includeAllColumns)
                        viewUpdates.add(view.withAddedRegularColumn(ColumnMetadata.regularColumn(view.metadata, columnName.bytes, type)));
            }
            break;
        case DROP:
            if (!current.isCQLTable())
                throw new InvalidRequestException("Cannot drop columns from a non-CQL3 table");
            for (AlterTableStatementColumn colData : colNameList) {
                columnName = colData.getColumnName().getIdentifier(current);
                def = builder.getColumn(columnName);
                if (def == null)
                    throw new InvalidRequestException(String.format("Column %s was not found in table %s", columnName, columnFamily()));
                switch(def.kind) {
                    case PARTITION_KEY:
                    case CLUSTERING:
                        throw new InvalidRequestException(String.format("Cannot drop PRIMARY KEY part %s", columnName));
                    case REGULAR:
                    case STATIC:
                        builder.removeRegularOrStaticColumn(def.name);
                        builder.recordColumnDrop(def, deleteTimestamp == null ? queryState.getTimestamp() : deleteTimestamp);
                        break;
                }
                // If the dropped column is required by any secondary indexes
                // we reject the operation, as the indexes must be dropped first
                Indexes allIndexes = current.indexes;
                if (!allIndexes.isEmpty()) {
                    ColumnFamilyStore store = Keyspace.openAndGetStore(current);
                    Set<IndexMetadata> dependentIndexes = store.indexManager.getDependentIndexes(def);
                    if (!dependentIndexes.isEmpty()) {
                        throw new InvalidRequestException(String.format("Cannot drop column %s because it has " + "dependent secondary indexes (%s)", def, dependentIndexes.stream().map(i -> i.name).collect(Collectors.joining(","))));
                    }
                }
                // If a column is dropped which is included in a view, we don't allow the drop to take place.
                boolean rejectAlter = false;
                StringBuilder viewNames = new StringBuilder();
                for (ViewMetadata view : views) {
                    if (!view.includes(columnName))
                        continue;
                    if (rejectAlter)
                        viewNames.append(',');
                    rejectAlter = true;
                    viewNames.append(view.name);
                }
                if (rejectAlter)
                    throw new InvalidRequestException(String.format("Cannot drop column %s, depended on by materialized views (%s.{%s})", columnName.toString(), keyspace(), viewNames.toString()));
            }
            break;
        case OPTS:
            if (attrs == null)
                throw new InvalidRequestException("ALTER TABLE WITH invoked, but no parameters found");
            attrs.validate();
            TableParams params = attrs.asAlteredTableParams(current.params);
            if (!Iterables.isEmpty(views) && params.gcGraceSeconds == 0) {
                throw new InvalidRequestException("Cannot alter gc_grace_seconds of the base table of a " + "materialized view to 0, since this value is used to TTL " + "undelivered updates. Setting gc_grace_seconds too low might " + "cause undelivered updates to expire " + "before being replayed.");
            }
            if (current.isCounter() && params.defaultTimeToLive > 0)
                throw new InvalidRequestException("Cannot set default_time_to_live on a table with counters");
            builder.params(params);
            break;
        case RENAME:
            for (Map.Entry<ColumnMetadata.Raw, ColumnMetadata.Raw> entry : renames.entrySet()) {
                ColumnIdentifier from = entry.getKey().getIdentifier(current);
                ColumnIdentifier to = entry.getValue().getIdentifier(current);
                def = current.getColumn(from);
                if (def == null)
                    throw new InvalidRequestException(String.format("Cannot rename unknown column %s in table %s", from, current.name));
                if (current.getColumn(to) != null)
                    throw new InvalidRequestException(String.format("Cannot rename column %s to %s in table %s; another column of that name already exist", from, to, current.name));
                if (!def.isPrimaryKeyColumn())
                    throw new InvalidRequestException(String.format("Cannot rename non PRIMARY KEY part %s", from));
                if (!current.indexes.isEmpty()) {
                    ColumnFamilyStore store = Keyspace.openAndGetStore(current);
                    Set<IndexMetadata> dependentIndexes = store.indexManager.getDependentIndexes(def);
                    if (!dependentIndexes.isEmpty())
                        throw new InvalidRequestException(String.format("Cannot rename column %s because it has " + "dependent secondary indexes (%s)", from, dependentIndexes.stream().map(i -> i.name).collect(Collectors.joining(","))));
                }
                builder.renamePrimaryKeyColumn(from, to);
                // If the view includes a renamed column, it must be renamed in the view table and the definition.
                for (ViewMetadata view : views) {
                    if (!view.includes(from))
                        continue;
                    ColumnIdentifier viewFrom = entry.getKey().getIdentifier(view.metadata);
                    ColumnIdentifier viewTo = entry.getValue().getIdentifier(view.metadata);
                    viewUpdates.add(view.renamePrimaryKeyColumn(viewFrom, viewTo));
                }
            }
            break;
    }
    // FIXME: Should really be a single announce for the table and views.
    MigrationManager.announceTableUpdate(builder.build(), isLocalOnly);
    for (ViewMetadata viewUpdate : viewUpdates) MigrationManager.announceViewUpdate(viewUpdate, isLocalOnly);
    return new Event.SchemaChange(Event.SchemaChange.Change.UPDATED, Event.SchemaChange.Target.TABLE, keyspace(), columnFamily());
}

Example 2 with ViewMetadata

use of org.apache.cassandra.schema.ViewMetadata in project cassandra by apache.

the class AlterViewStatement method announceMigration.

public Event.SchemaChange announceMigration(QueryState queryState, boolean isLocalOnly) throws RequestValidationException {
    TableMetadata meta = Schema.instance.validateTable(keyspace(), columnFamily());
    if (!meta.isView())
        throw new InvalidRequestException("Cannot use ALTER MATERIALIZED VIEW on Table");
    ViewMetadata current = Schema.instance.getView(keyspace(), columnFamily());
    if (attrs == null)
        throw new InvalidRequestException("ALTER MATERIALIZED VIEW WITH invoked, but no parameters found");
    attrs.validate();
    TableParams params = attrs.asAlteredTableParams(current.metadata.params);
    if (params.gcGraceSeconds == 0) {
        throw new InvalidRequestException("Cannot alter gc_grace_seconds of a materialized view to 0, since this " + "value is used to TTL undelivered updates. Setting gc_grace_seconds too " + "low might cause undelivered updates to expire before being replayed.");
    }
    if (params.defaultTimeToLive > 0) {
        throw new InvalidRequestException("Cannot set or alter default_time_to_live for a materialized view. " + "Data in a materialized view always expire at the same time than " + "the corresponding data in the parent table.");
    }
    ViewMetadata updated = current.copy(current.metadata.unbuild().params(params).build());
    MigrationManager.announceViewUpdate(updated, isLocalOnly);
    return new Event.SchemaChange(Event.SchemaChange.Change.UPDATED, Event.SchemaChange.Target.TABLE, keyspace(), columnFamily());
}

Example 3 with ViewMetadata

use of org.apache.cassandra.schema.ViewMetadata in project cassandra by apache.

the class ModificationStatement method checkAccess.

public void checkAccess(ClientState state) throws InvalidRequestException, UnauthorizedException {
    state.hasColumnFamilyAccess(metadata, Permission.MODIFY);
    // CAS updates can be used to simulate a SELECT query, so should require Permission.SELECT as well.
    if (hasConditions())
        state.hasColumnFamilyAccess(metadata, Permission.SELECT);
    // MV updates need to get the current state from the table, and might update the views
    // Require Permission.SELECT on the base table, and Permission.MODIFY on the views
    Iterator<ViewMetadata> views = View.findAll(keyspace(), columnFamily()).iterator();
    if (views.hasNext()) {
        state.hasColumnFamilyAccess(metadata, Permission.SELECT);
        do {
            state.hasColumnFamilyAccess(views.next().metadata, Permission.MODIFY);
        } while (views.hasNext());
    }
    for (Function function : getFunctions()) state.ensureHasPermission(Permission.EXECUTE, function);
}

Example 4 with ViewMetadata

use of org.apache.cassandra.schema.ViewMetadata in project cassandra by apache.

the class DropTableStatement method announceMigration.

public Event.SchemaChange announceMigration(QueryState queryState, boolean isLocalOnly) throws ConfigurationException {
    try {
        KeyspaceMetadata ksm = Schema.instance.getKeyspaceMetadata(keyspace());
        if (ksm == null)
            throw new ConfigurationException(String.format("Cannot drop table in unknown keyspace '%s'", keyspace()));
        TableMetadata metadata = ksm.getTableOrViewNullable(columnFamily());
        if (metadata != null) {
            if (metadata.isView())
                throw new InvalidRequestException("Cannot use DROP TABLE on Materialized View");
            boolean rejectDrop = false;
            StringBuilder messageBuilder = new StringBuilder();
            for (ViewMetadata def : ksm.views) {
                if (def.baseTableId.equals(metadata.id)) {
                    if (rejectDrop)
                        messageBuilder.append(',');
                    rejectDrop = true;
                    messageBuilder.append(def.name);
                }
            }
            if (rejectDrop) {
                throw new InvalidRequestException(String.format("Cannot drop table when materialized views still depend on it (%s.{%s})", keyspace(), messageBuilder.toString()));
            }
        }
        MigrationManager.announceTableDrop(keyspace(), columnFamily(), isLocalOnly);
        return new Event.SchemaChange(Event.SchemaChange.Change.DROPPED, Event.SchemaChange.Target.TABLE, keyspace(), columnFamily());
    } catch (ConfigurationException e) {
        if (ifExists)
            return null;
        throw e;
    }
}

Example 5 with ViewMetadata

use of org.apache.cassandra.schema.ViewMetadata in project cassandra by apache.

the class ViewManager method reload.

public void reload() {
    Map<String, ViewMetadata> newViewsByName = new HashMap<>();
    for (ViewMetadata definition : keyspace.getMetadata().views) {
        newViewsByName.put(definition.name, definition);
    }
    for (String viewName : viewsByName.keySet()) {
        if (!newViewsByName.containsKey(viewName))
            removeView(viewName);
    }
    for (Map.Entry<String, ViewMetadata> entry : newViewsByName.entrySet()) {
        if (!viewsByName.containsKey(entry.getKey()))
            addView(entry.getValue());
    }
    // disabled via JMX or nodetool as that sets SS to an uninitialized state.
    if (!StorageService.instance.isInitialized()) {
        logger.info("Not submitting build tasks for views in keyspace {} as " + "storage service is not initialized", keyspace.getName());
        return;
    }
    for (View view : allViews()) {
        view.build();
        // We provide the new definition from the base metadata
        view.updateDefinition(newViewsByName.get(view.name));
    }
}