Examples with SchemaIndexDropOperation org.apache.ignite.internal.processors.query.schema.operation.SchemaIndexDropOperation used on opensource projects

Example 1 with SchemaIndexDropOperation

use of org.apache.ignite.internal.processors.query.schema.operation.SchemaIndexDropOperation in project ignite by apache.

the class GridQueryProcessor method onCacheStart0.

/**
 * Create type descriptors from schema and initialize indexing for given cache.<p>
 * Use with {@link #busyLock} where appropriate.
 * @param cctx Cache context.
 * @param schema Initial schema.
 * @throws IgniteCheckedException If failed.
 */
@SuppressWarnings({ "deprecation", "ThrowableResultOfMethodCallIgnored" })
public void onCacheStart0(GridCacheContext<?, ?> cctx, QuerySchema schema) throws IgniteCheckedException {
    cctx.shared().database().checkpointReadLock();
    try {
        synchronized (stateMux) {
            boolean escape = cctx.config().isSqlEscapeAll();
            String cacheName = cctx.name();
            String schemaName = QueryUtils.normalizeSchemaName(cacheName, cctx.config().getSqlSchema());
            // Prepare candidates.
            List<Class<?>> mustDeserializeClss = new ArrayList<>();
            Collection<QueryTypeCandidate> cands = new ArrayList<>();
            Collection<QueryEntity> qryEntities = schema.entities();
            if (!F.isEmpty(qryEntities)) {
                for (QueryEntity qryEntity : qryEntities) {
                    QueryTypeCandidate cand = QueryUtils.typeForQueryEntity(cacheName, schemaName, cctx, qryEntity, mustDeserializeClss, escape);
                    cands.add(cand);
                }
            }
            // Ensure that candidates has unique index names.
            // Otherwise we will not be able to apply pending operations.
            Map<String, QueryTypeDescriptorImpl> tblTypMap = new HashMap<>();
            Map<String, QueryTypeDescriptorImpl> idxTypMap = new HashMap<>();
            for (QueryTypeCandidate cand : cands) {
                QueryTypeDescriptorImpl desc = cand.descriptor();
                QueryTypeDescriptorImpl oldDesc = tblTypMap.put(desc.tableName(), desc);
                if (oldDesc != null)
                    throw new IgniteException("Duplicate table name [cache=" + cacheName + ",tblName=" + desc.tableName() + ", type1=" + desc.name() + ", type2=" + oldDesc.name() + ']');
                for (String idxName : desc.indexes().keySet()) {
                    oldDesc = idxTypMap.put(idxName, desc);
                    if (oldDesc != null)
                        throw new IgniteException("Duplicate index name [cache=" + cacheName + ",idxName=" + idxName + ", type1=" + desc.name() + ", type2=" + oldDesc.name() + ']');
                }
            }
            // There could be only one in-flight operation for a cache.
            for (SchemaOperation op : schemaOps.values()) {
                if (F.eq(op.proposeMessage().deploymentId(), cctx.dynamicDeploymentId())) {
                    if (op.started()) {
                        SchemaOperationWorker worker = op.manager().worker();
                        assert !worker.cacheRegistered();
                        if (!worker.nop()) {
                            IgniteInternalFuture fut = worker.future();
                            assert fut.isDone();
                            if (fut.error() == null) {
                                SchemaAbstractOperation op0 = op.proposeMessage().operation();
                                if (op0 instanceof SchemaIndexCreateOperation) {
                                    SchemaIndexCreateOperation opCreate = (SchemaIndexCreateOperation) op0;
                                    QueryTypeDescriptorImpl typeDesc = tblTypMap.get(opCreate.tableName());
                                    assert typeDesc != null;
                                    QueryUtils.processDynamicIndexChange(opCreate.indexName(), opCreate.index(), typeDesc);
                                } else if (op0 instanceof SchemaIndexDropOperation) {
                                    SchemaIndexDropOperation opDrop = (SchemaIndexDropOperation) op0;
                                    QueryTypeDescriptorImpl typeDesc = idxTypMap.get(opDrop.indexName());
                                    assert typeDesc != null;
                                    QueryUtils.processDynamicIndexChange(opDrop.indexName(), null, typeDesc);
                                } else if (op0 instanceof SchemaAlterTableAddColumnOperation) {
                                    SchemaAlterTableAddColumnOperation opAddCol = (SchemaAlterTableAddColumnOperation) op0;
                                    QueryTypeDescriptorImpl typeDesc = tblTypMap.get(opAddCol.tableName());
                                    assert typeDesc != null;
                                    processDynamicAddColumn(typeDesc, opAddCol.columns());
                                } else if (op0 instanceof SchemaAlterTableDropColumnOperation) {
                                    SchemaAlterTableDropColumnOperation opDropCol = (SchemaAlterTableDropColumnOperation) op0;
                                    QueryTypeDescriptorImpl typeDesc = tblTypMap.get(opDropCol.tableName());
                                    assert typeDesc != null;
                                    processDynamicDropColumn(typeDesc, opDropCol.columns());
                                } else
                                    assert false;
                            }
                        }
                    }
                    break;
                }
            }
            // Ready to register at this point.
            registerCache0(cacheName, schemaName, cctx, cands);
            // Warn about possible implicit deserialization.
            if (!mustDeserializeClss.isEmpty()) {
                U.warnDevOnly(log, "Some classes in query configuration cannot be written in binary format " + "because they either implement Externalizable interface or have writeObject/readObject " + "methods. Instances of these classes will be deserialized in order to build indexes. Please " + "ensure that all nodes have these classes in classpath. To enable binary serialization " + "either implement " + Binarylizable.class.getSimpleName() + " interface or set explicit " + "serializer using BinaryTypeConfiguration.setSerializer() method: " + mustDeserializeClss);
            }
        }
    } finally {
        cctx.shared().database().checkpointReadUnlock();
    }
}

Example 2 with SchemaIndexDropOperation

use of org.apache.ignite.internal.processors.query.schema.operation.SchemaIndexDropOperation in project ignite by apache.

the class GridQueryProcessor method prepareChangeOnNotStartedCache.

/**
 * Prepare operation on non-started cache.
 *
 * @param op Operation.
 * @param schema Known cache schema.
 * @return Result: nop flag, error.
 */
private T2<Boolean, SchemaOperationException> prepareChangeOnNotStartedCache(SchemaAbstractOperation op, QuerySchema schema) {
    boolean nop = false;
    SchemaOperationException err = null;
    // Build table and index maps.
    Map<String, QueryEntity> tblMap = new HashMap<>();
    Map<String, T2<QueryEntity, QueryIndex>> idxMap = new HashMap<>();
    for (QueryEntity entity : schema.entities()) {
        String tblName = entity.getTableName();
        QueryEntity oldEntity = tblMap.put(tblName, entity);
        if (oldEntity != null) {
            err = new SchemaOperationException("Invalid schema state (duplicate table found): " + tblName);
            break;
        }
        for (QueryIndex entityIdx : entity.getIndexes()) {
            String idxName = entityIdx.getName();
            T2<QueryEntity, QueryIndex> oldIdxEntity = idxMap.put(idxName, new T2<>(entity, entityIdx));
            if (oldIdxEntity != null) {
                err = new SchemaOperationException("Invalid schema state (duplicate index found): " + idxName);
                break;
            }
        }
        if (err != null)
            break;
    }
    // Now check whether operation can be applied to schema.
    if (op instanceof SchemaIndexCreateOperation) {
        SchemaIndexCreateOperation op0 = (SchemaIndexCreateOperation) op;
        String idxName = op0.indexName();
        T2<QueryEntity, QueryIndex> oldIdxEntity = idxMap.get(idxName);
        if (oldIdxEntity == null) {
            String tblName = op0.tableName();
            QueryEntity oldEntity = tblMap.get(tblName);
            if (oldEntity == null)
                err = new SchemaOperationException(SchemaOperationException.CODE_TABLE_NOT_FOUND, tblName);
            else {
                for (String fieldName : op0.index().getFields().keySet()) {
                    Set<String> oldEntityFields = new HashSet<>(oldEntity.getFields().keySet());
                    for (Map.Entry<String, String> alias : oldEntity.getAliases().entrySet()) {
                        oldEntityFields.remove(alias.getKey());
                        oldEntityFields.add(alias.getValue());
                    }
                    if (!oldEntityFields.contains(fieldName)) {
                        err = new SchemaOperationException(SchemaOperationException.CODE_COLUMN_NOT_FOUND, fieldName);
                        break;
                    }
                }
            }
        } else {
            if (op0.ifNotExists())
                nop = true;
            else
                err = new SchemaOperationException(SchemaOperationException.CODE_INDEX_EXISTS, idxName);
        }
    } else if (op instanceof SchemaIndexDropOperation) {
        SchemaIndexDropOperation op0 = (SchemaIndexDropOperation) op;
        String idxName = op0.indexName();
        T2<QueryEntity, QueryIndex> oldIdxEntity = idxMap.get(idxName);
        if (oldIdxEntity == null) {
            if (op0.ifExists())
                nop = true;
            else
                err = new SchemaOperationException(SchemaOperationException.CODE_INDEX_NOT_FOUND, idxName);
        }
    } else if (op instanceof SchemaAlterTableAddColumnOperation) {
        SchemaAlterTableAddColumnOperation op0 = (SchemaAlterTableAddColumnOperation) op;
        QueryEntity e = tblMap.get(op0.tableName());
        if (e == null) {
            if (op0.ifTableExists())
                nop = true;
            else
                err = new SchemaOperationException(SchemaOperationException.CODE_TABLE_NOT_FOUND, op0.tableName());
        } else {
            for (QueryField fld : op0.columns()) {
                if (e.getFields().containsKey(fld.name())) {
                    if (op0.ifNotExists()) {
                        assert op0.columns().size() == 1;
                        nop = true;
                    } else
                        err = new SchemaOperationException(SchemaOperationException.CODE_COLUMN_EXISTS, fld.name());
                }
            }
        }
    } else if (op instanceof SchemaAlterTableDropColumnOperation) {
        SchemaAlterTableDropColumnOperation op0 = (SchemaAlterTableDropColumnOperation) op;
        QueryEntity e = tblMap.get(op0.tableName());
        if (e == null) {
            if (op0.ifTableExists())
                nop = true;
            else
                err = new SchemaOperationException(SchemaOperationException.CODE_TABLE_NOT_FOUND, op0.tableName());
        } else {
            Map<String, String> aliases = e.getAliases();
            for (String colName : op0.columns()) {
                if (err != null)
                    break;
                String fldName = colName;
                if (!F.isEmpty(aliases)) {
                    for (Map.Entry<String, String> a : aliases.entrySet()) {
                        if (colName.equals(a.getValue())) {
                            fldName = a.getKey();
                            break;
                        }
                    }
                }
                if (!e.getFields().containsKey(fldName)) {
                    if (op0.ifExists()) {
                        assert op0.columns().size() == 1;
                        nop = true;
                    } else
                        err = new SchemaOperationException(SchemaOperationException.CODE_COLUMN_NOT_FOUND, fldName);
                    break;
                }
                err = QueryUtils.validateDropColumn(e, fldName, colName);
            }
        }
    } else
        err = new SchemaOperationException("Unsupported operation: " + op);
    return new T2<>(nop, err);
}

Example 3 with SchemaIndexDropOperation

use of org.apache.ignite.internal.processors.query.schema.operation.SchemaIndexDropOperation in project ignite by apache.

the class QuerySchema method finish.

/**
 * Process finish message.
 *
 * @param msg Message.
 */
public void finish(SchemaFinishDiscoveryMessage msg) {
    synchronized (mux) {
        SchemaAbstractOperation op = msg.operation();
        if (op instanceof SchemaIndexCreateOperation) {
            SchemaIndexCreateOperation op0 = (SchemaIndexCreateOperation) op;
            for (QueryEntity entity : entities) {
                String tblName = entity.getTableName();
                if (F.eq(tblName, op0.tableName())) {
                    boolean exists = false;
                    for (QueryIndex idx : entity.getIndexes()) {
                        if (F.eq(idx.getName(), op0.indexName())) {
                            exists = true;
                            break;
                        }
                    }
                    if (!exists) {
                        List<QueryIndex> idxs = new ArrayList<>(entity.getIndexes());
                        idxs.add(op0.index());
                        entity.setIndexes(idxs);
                    }
                    break;
                }
            }
        } else if (op instanceof SchemaIndexDropOperation) {
            SchemaIndexDropOperation op0 = (SchemaIndexDropOperation) op;
            for (QueryEntity entity : entities) {
                Collection<QueryIndex> idxs = entity.getIndexes();
                QueryIndex victim = null;
                for (QueryIndex idx : idxs) {
                    if (F.eq(idx.getName(), op0.indexName())) {
                        victim = idx;
                        break;
                    }
                }
                if (victim != null) {
                    List<QueryIndex> newIdxs = new ArrayList<>(entity.getIndexes());
                    newIdxs.remove(victim);
                    entity.setIndexes(newIdxs);
                    break;
                }
            }
        } else if (op instanceof SchemaAlterTableAddColumnOperation) {
            SchemaAlterTableAddColumnOperation op0 = (SchemaAlterTableAddColumnOperation) op;
            int targetIdx = -1;
            for (int i = 0; i < entities.size(); i++) {
                QueryEntity entity = ((List<QueryEntity>) entities).get(i);
                if (F.eq(entity.getTableName(), op0.tableName())) {
                    targetIdx = i;
                    break;
                }
            }
            if (targetIdx == -1)
                return;
            boolean replaceTarget = false;
            QueryEntity target = ((List<QueryEntity>) entities).get(targetIdx);
            for (QueryField field : op0.columns()) {
                target.getFields().put(field.name(), field.typeName());
                if (!field.isNullable()) {
                    if (!(target instanceof QueryEntityEx)) {
                        target = new QueryEntityEx(target);
                        replaceTarget = true;
                    }
                    QueryEntityEx target0 = (QueryEntityEx) target;
                    Set<String> notNullFields = target0.getNotNullFields();
                    if (notNullFields == null) {
                        notNullFields = new HashSet<>();
                        target0.setNotNullFields(notNullFields);
                    }
                    notNullFields.add(field.name());
                }
            }
            if (replaceTarget)
                ((List<QueryEntity>) entities).set(targetIdx, target);
        } else {
            assert op instanceof SchemaAlterTableDropColumnOperation;
            SchemaAlterTableDropColumnOperation op0 = (SchemaAlterTableDropColumnOperation) op;
            int targetIdx = -1;
            for (int i = 0; i < entities.size(); i++) {
                QueryEntity entity = ((List<QueryEntity>) entities).get(i);
                if (F.eq(entity.getTableName(), op0.tableName())) {
                    targetIdx = i;
                    break;
                }
            }
            if (targetIdx == -1)
                return;
            QueryEntity entity = ((List<QueryEntity>) entities).get(targetIdx);
            for (String field : op0.columns()) entity.getFields().remove(field);
        }
    }
}

Example 4 with SchemaIndexDropOperation

use of org.apache.ignite.internal.processors.query.schema.operation.SchemaIndexDropOperation in project ignite by apache.

the class GridQueryProcessor method processSchemaOperationLocal.

/**
 * Process schema operation.
 *
 * @param op Operation.
 * @param type Type descriptor.
 * @param depId Cache deployment ID.
 * @param cancelTok Cancel token.
 * @throws SchemaOperationException If failed.
 */
public void processSchemaOperationLocal(SchemaAbstractOperation op, QueryTypeDescriptorImpl type, IgniteUuid depId, IndexRebuildCancelToken cancelTok) throws SchemaOperationException {
    if (log.isDebugEnabled())
        log.debug("Started local index operation [opId=" + op.id() + ']');
    String cacheName = op.cacheName();
    GridCacheContextInfo<?, ?> cacheInfo = null;
    if (op instanceof SchemaAddQueryEntityOperation) {
        GridCacheContext<?, ?> cctx = ctx.cache().context().cacheContext(CU.cacheId(cacheName));
        if (cctx != null)
            cacheInfo = new GridCacheContextInfo<>(cctx, false);
        else
            return;
    } else
        cacheInfo = idx.registeredCacheInfo(cacheName);
    if (cacheInfo == null || !F.eq(depId, cacheInfo.dynamicDeploymentId()))
        throw new SchemaOperationException(SchemaOperationException.CODE_CACHE_NOT_FOUND, cacheName);
    try {
        if (op instanceof SchemaIndexCreateOperation) {
            SchemaIndexCreateOperation op0 = (SchemaIndexCreateOperation) op;
            QueryIndexDescriptorImpl idxDesc = QueryUtils.createIndexDescriptor(type, op0.index());
            SchemaIndexCacheVisitor visitor;
            if (cacheInfo.isCacheContextInited()) {
                int buildIdxPoolSize = ctx.config().getBuildIndexThreadPoolSize();
                int parallel = op0.parallel();
                if (parallel > buildIdxPoolSize) {
                    String idxName = op0.indexName();
                    log.warning("Provided parallelism " + parallel + " for creation of index " + idxName + " is greater than the number of index building threads. Will use " + buildIdxPoolSize + " threads to build index. Increase by IgniteConfiguration.setBuildIndexThreadPoolSize" + " and restart the node if you want to use more threads. [tableName=" + op0.tableName() + ", indexName=" + idxName + ", requestedParallelism=" + parallel + ", buildIndexPoolSize=" + buildIdxPoolSize + "]");
                }
                GridFutureAdapter<Void> createIdxFut = new GridFutureAdapter<>();
                GridCacheContext<?, ?> cacheCtx = cacheInfo.cacheContext();
                visitor = new SchemaIndexCacheVisitorImpl(cacheCtx, cancelTok, createIdxFut) {

                    /**
                     * {@inheritDoc}
                     */
                    @Override
                    public void visit(SchemaIndexCacheVisitorClosure clo) {
                        idxBuildStatusStorage.onStartBuildNewIndex(cacheCtx);
                        try {
                            super.visit(clo);
                            buildIdxFut.get();
                        } catch (Exception e) {
                            throw new IgniteException(e);
                        } finally {
                            idxBuildStatusStorage.onFinishBuildNewIndex(cacheName);
                        }
                    }
                };
            } else
                // For not started caches we shouldn't add any data to index.
                visitor = clo -> {
                };
            idx.dynamicIndexCreate(op0.schemaName(), op0.tableName(), idxDesc, op0.ifNotExists(), visitor);
        } else if (op instanceof SchemaIndexDropOperation) {
            SchemaIndexDropOperation op0 = (SchemaIndexDropOperation) op;
            idx.dynamicIndexDrop(op0.schemaName(), op0.indexName(), op0.ifExists());
        } else if (op instanceof SchemaAlterTableAddColumnOperation) {
            SchemaAlterTableAddColumnOperation op0 = (SchemaAlterTableAddColumnOperation) op;
            processDynamicAddColumn(type, op0.columns());
            idx.dynamicAddColumn(op0.schemaName(), op0.tableName(), op0.columns(), op0.ifTableExists(), op0.ifNotExists());
        } else if (op instanceof SchemaAlterTableDropColumnOperation) {
            SchemaAlterTableDropColumnOperation op0 = (SchemaAlterTableDropColumnOperation) op;
            processDynamicDropColumn(type, op0.columns());
            idx.dynamicDropColumn(op0.schemaName(), op0.tableName(), op0.columns(), op0.ifTableExists(), op0.ifExists());
        } else if (op instanceof SchemaAddQueryEntityOperation) {
            SchemaAddQueryEntityOperation op0 = (SchemaAddQueryEntityOperation) op;
            if (!cacheNames.contains(op0.cacheName())) {
                cacheInfo.onSchemaAddQueryEntity(op0);
                T3<Collection<QueryTypeCandidate>, Map<String, QueryTypeDescriptorImpl>, Map<String, QueryTypeDescriptorImpl>> candRes = createQueryCandidates(op0.cacheName(), op0.schemaName(), cacheInfo, op0.entities(), op0.isSqlEscape());
                registerCache0(op0.cacheName(), op.schemaName(), cacheInfo, candRes.get1(), false);
            }
            if (idxRebuildFutStorage.prepareRebuildIndexes(singleton(cacheInfo.cacheId()), null).isEmpty())
                rebuildIndexesFromHash0(cacheInfo.cacheContext(), false, cancelTok);
            else {
                if (log.isInfoEnabled())
                    log.info("Rebuilding indexes for the cache is already in progress: " + cacheInfo.name());
            }
        } else
            throw new SchemaOperationException("Unsupported operation: " + op);
    } catch (Throwable e) {
        if (e instanceof SchemaOperationException)
            throw (SchemaOperationException) e;
        else
            throw new SchemaOperationException("Schema change operation failed: " + e.getMessage(), e);
    }
}

Example 5 with SchemaIndexDropOperation

use of org.apache.ignite.internal.processors.query.schema.operation.SchemaIndexDropOperation in project ignite by apache.

the class GridQueryProcessor method prepareChangeOnStartedCache.

/**
 * Prepare change on started cache.
 *
 * @param op Operation.
 * @return Result: affected type, nop flag, error.
 */
private T3<QueryTypeDescriptorImpl, Boolean, SchemaOperationException> prepareChangeOnStartedCache(SchemaAbstractOperation op) {
    QueryTypeDescriptorImpl type = null;
    boolean nop = false;
    SchemaOperationException err = null;
    String cacheName = op.cacheName();
    if (op instanceof SchemaIndexCreateOperation) {
        SchemaIndexCreateOperation op0 = (SchemaIndexCreateOperation) op;
        QueryIndex idx = op0.index();
        // Make sure table exists.
        String tblName = op0.tableName();
        type = type(cacheName, tblName);
        if (type == null)
            err = new SchemaOperationException(SchemaOperationException.CODE_TABLE_NOT_FOUND, tblName);
        else {
            // Make sure that index can be applied to the given table.
            for (String idxField : idx.getFieldNames()) {
                if (!type.fields().containsKey(idxField)) {
                    err = new SchemaOperationException(SchemaOperationException.CODE_COLUMN_NOT_FOUND, idxField);
                    break;
                }
            }
        }
        // Check conflict with other indexes.
        if (err == null) {
            String idxName = op0.index().getName();
            QueryIndexKey idxKey = new QueryIndexKey(op.schemaName(), idxName);
            if (idxs.get(idxKey) != null) {
                if (op0.ifNotExists())
                    nop = true;
                else
                    err = new SchemaOperationException(SchemaOperationException.CODE_INDEX_EXISTS, idxName);
            }
        }
    } else if (op instanceof SchemaIndexDropOperation) {
        SchemaIndexDropOperation op0 = (SchemaIndexDropOperation) op;
        String idxName = op0.indexName();
        QueryIndexDescriptorImpl oldIdx = idxs.get(new QueryIndexKey(op.schemaName(), idxName));
        if (oldIdx == null) {
            if (op0.ifExists())
                nop = true;
            else
                err = new SchemaOperationException(SchemaOperationException.CODE_INDEX_NOT_FOUND, idxName);
        } else
            type = oldIdx.typeDescriptor();
    } else if (op instanceof SchemaAlterTableAddColumnOperation) {
        SchemaAlterTableAddColumnOperation op0 = (SchemaAlterTableAddColumnOperation) op;
        type = type(cacheName, op0.tableName());
        if (type == null) {
            if (op0.ifTableExists())
                nop = true;
            else
                err = new SchemaOperationException(SchemaOperationException.CODE_TABLE_NOT_FOUND, op0.tableName());
        } else {
            for (QueryField col : op0.columns()) {
                if (type.hasField(col.name())) {
                    if (op0.ifNotExists()) {
                        assert op0.columns().size() == 1;
                        nop = true;
                    } else
                        err = new SchemaOperationException(CODE_COLUMN_EXISTS, col.name());
                } else if (!checkFieldOnBinaryType(type.typeId(), col))
                    err = new SchemaOperationException(CODE_COLUMN_EXISTS, "with a different type.");
            }
        }
    } else if (op instanceof SchemaAlterTableDropColumnOperation) {
        SchemaAlterTableDropColumnOperation op0 = (SchemaAlterTableDropColumnOperation) op;
        type = type(cacheName, op0.tableName());
        if (type == null) {
            if (op0.ifTableExists())
                nop = true;
            else
                err = new SchemaOperationException(SchemaOperationException.CODE_TABLE_NOT_FOUND, op0.tableName());
        } else {
            for (String name : op0.columns()) {
                if (err != null)
                    break;
                if (!type.hasField(name)) {
                    if (op0.ifExists()) {
                        assert op0.columns().size() == 1;
                        nop = true;
                    } else
                        err = new SchemaOperationException(SchemaOperationException.CODE_COLUMN_NOT_FOUND, name);
                    break;
                }
                err = QueryUtils.validateDropColumn(type, name);
            }
        }
    } else if (op instanceof SchemaAddQueryEntityOperation) {
        if (cacheNames.contains(op.cacheName()))
            err = new SchemaOperationException(SchemaOperationException.CODE_CACHE_ALREADY_INDEXED, op.cacheName());
    } else
        err = new SchemaOperationException("Unsupported operation: " + op);
    return new T3<>(type, nop, err);
}