Examples with Type com.facebook.presto.spi.type.Type used on opensource projects

Example 86 with Type

use of com.facebook.presto.spi.type.Type in project presto by prestodb.

the class AddColumnTask method execute.

@Override
public ListenableFuture<?> execute(AddColumn statement, TransactionManager transactionManager, Metadata metadata, AccessControl accessControl, QueryStateMachine stateMachine, List<Expression> parameters) {
    Session session = stateMachine.getSession();
    QualifiedObjectName tableName = createQualifiedObjectName(session, statement, statement.getName());
    Optional<TableHandle> tableHandle = metadata.getTableHandle(session, tableName);
    if (!tableHandle.isPresent()) {
        throw new SemanticException(MISSING_TABLE, statement, "Table '%s' does not exist", tableName);
    }
    accessControl.checkCanAddColumns(session.getRequiredTransactionId(), session.getIdentity(), tableName);
    Map<String, ColumnHandle> columnHandles = metadata.getColumnHandles(session, tableHandle.get());
    ColumnDefinition element = statement.getColumn();
    Type type = metadata.getType(parseTypeSignature(element.getType()));
    if ((type == null) || type.equals(UNKNOWN)) {
        throw new SemanticException(TYPE_MISMATCH, element, "Unknown type for column '%s' ", element.getName());
    }
    if (columnHandles.containsKey(element.getName().toLowerCase(ENGLISH))) {
        throw new SemanticException(COLUMN_ALREADY_EXISTS, statement, "Column '%s' already exists", element.getName());
    }
    metadata.addColumn(session, tableHandle.get(), new ColumnMetadata(element.getName(), type));
    return immediateFuture(null);
}

Example 87 with Type

use of com.facebook.presto.spi.type.Type in project presto by prestodb.

the class CreateTableTask method execute.

@Override
public ListenableFuture<?> execute(CreateTable statement, TransactionManager transactionManager, Metadata metadata, AccessControl accessControl, QueryStateMachine stateMachine, List<Expression> parameters) {
    checkArgument(!statement.getElements().isEmpty(), "no columns for table");
    Session session = stateMachine.getSession();
    QualifiedObjectName tableName = createQualifiedObjectName(session, statement, statement.getName());
    Optional<TableHandle> tableHandle = metadata.getTableHandle(session, tableName);
    if (tableHandle.isPresent()) {
        if (!statement.isNotExists()) {
            throw new SemanticException(TABLE_ALREADY_EXISTS, statement, "Table '%s' already exists", tableName);
        }
        return immediateFuture(null);
    }
    List<ColumnMetadata> columns = new ArrayList<>();
    Map<String, Object> inheritedProperties = ImmutableMap.of();
    boolean includingProperties = false;
    for (TableElement element : statement.getElements()) {
        if (element instanceof ColumnDefinition) {
            ColumnDefinition column = (ColumnDefinition) element;
            Type type = metadata.getType(parseTypeSignature(column.getType()));
            if ((type == null) || type.equals(UNKNOWN)) {
                throw new SemanticException(TYPE_MISMATCH, column, "Unknown type for column '%s' ", column.getName());
            }
            columns.add(new ColumnMetadata(column.getName(), type, column.getComment().orElse(null), false));
        } else if (element instanceof LikeClause) {
            LikeClause likeClause = (LikeClause) element;
            QualifiedObjectName likeTableName = createQualifiedObjectName(session, statement, likeClause.getTableName());
            if (!metadata.getCatalogHandle(session, likeTableName.getCatalogName()).isPresent()) {
                throw new SemanticException(MISSING_CATALOG, statement, "LIKE table catalog '%s' does not exist", likeTableName.getCatalogName());
            }
            if (!tableName.getCatalogName().equals(likeTableName.getCatalogName())) {
                throw new SemanticException(NOT_SUPPORTED, statement, "LIKE table across catalogs is not supported");
            }
            TableHandle likeTable = metadata.getTableHandle(session, likeTableName).orElseThrow(() -> new SemanticException(MISSING_TABLE, statement, "LIKE table '%s' does not exist", likeTableName));
            TableMetadata likeTableMetadata = metadata.getTableMetadata(session, likeTable);
            Optional<LikeClause.PropertiesOption> propertiesOption = likeClause.getPropertiesOption();
            if (propertiesOption.isPresent() && propertiesOption.get().equals(LikeClause.PropertiesOption.INCLUDING)) {
                if (includingProperties) {
                    throw new SemanticException(NOT_SUPPORTED, statement, "Only one LIKE clause can specify INCLUDING PROPERTIES");
                }
                includingProperties = true;
                inheritedProperties = likeTableMetadata.getMetadata().getProperties();
            }
            likeTableMetadata.getColumns().stream().filter(column -> !column.isHidden()).forEach(columns::add);
        } else {
            throw new PrestoException(GENERIC_INTERNAL_ERROR, "Invalid TableElement: " + element.getClass().getName());
        }
    }
    accessControl.checkCanCreateTable(session.getRequiredTransactionId(), session.getIdentity(), tableName);
    ConnectorId connectorId = metadata.getCatalogHandle(session, tableName.getCatalogName()).orElseThrow(() -> new PrestoException(NOT_FOUND, "Catalog does not exist: " + tableName.getCatalogName()));
    Map<String, Object> properties = metadata.getTablePropertyManager().getProperties(connectorId, tableName.getCatalogName(), statement.getProperties(), session, metadata, parameters);
    Map<String, Object> finalProperties = combineProperties(statement.getProperties().keySet(), properties, inheritedProperties);
    ConnectorTableMetadata tableMetadata = new ConnectorTableMetadata(tableName.asSchemaTableName(), columns, finalProperties);
    metadata.createTable(session, tableName.getCatalogName(), tableMetadata);
    return immediateFuture(null);
}

Example 88 with Type

use of com.facebook.presto.spi.type.Type in project presto by prestodb.

the class LocalFileRecordCursor method checkFieldType.

private void checkFieldType(int field, Type... expected) {
    Type actual = getType(field);
    for (Type type : expected) {
        if (actual.equals(type)) {
            return;
        }
    }
    String expectedTypes = Joiner.on(", ").join(expected);
    throw new IllegalArgumentException(format("Expected field %s to be type %s but is %s", field, expectedTypes, actual));
}

Example 89 with Type

use of com.facebook.presto.spi.type.Type in project presto by prestodb.

the class FunctionRegistry method doGetSpecializedFunctionKey.

private SpecializedFunctionKey doGetSpecializedFunctionKey(Signature signature) {
    Iterable<SqlFunction> candidates = functions.get(QualifiedName.of(signature.getName()));
    // search for exact match
    Type returnType = typeManager.getType(signature.getReturnType());
    List<TypeSignatureProvider> argumentTypeSignatureProviders = fromTypeSignatures(signature.getArgumentTypes());
    for (SqlFunction candidate : candidates) {
        Optional<BoundVariables> boundVariables = new SignatureBinder(typeManager, candidate.getSignature(), false).bindVariables(argumentTypeSignatureProviders, returnType);
        if (boundVariables.isPresent()) {
            return new SpecializedFunctionKey(candidate, boundVariables.get(), argumentTypeSignatureProviders.size());
        }
    }
    // TODO: hack because there could be "type only" coercions (which aren't necessarily included as implicit casts),
    // so do a second pass allowing "type only" coercions
    List<Type> argumentTypes = resolveTypes(signature.getArgumentTypes(), typeManager);
    for (SqlFunction candidate : candidates) {
        SignatureBinder binder = new SignatureBinder(typeManager, candidate.getSignature(), true);
        Optional<BoundVariables> boundVariables = binder.bindVariables(argumentTypeSignatureProviders, returnType);
        if (!boundVariables.isPresent()) {
            continue;
        }
        Signature boundSignature = applyBoundVariables(candidate.getSignature(), boundVariables.get(), argumentTypes.size());
        if (!typeManager.isTypeOnlyCoercion(typeManager.getType(boundSignature.getReturnType()), returnType)) {
            continue;
        }
        boolean nonTypeOnlyCoercion = false;
        for (int i = 0; i < argumentTypes.size(); i++) {
            Type expectedType = typeManager.getType(boundSignature.getArgumentTypes().get(i));
            if (!typeManager.isTypeOnlyCoercion(argumentTypes.get(i), expectedType)) {
                nonTypeOnlyCoercion = true;
                break;
            }
        }
        if (nonTypeOnlyCoercion) {
            continue;
        }
        return new SpecializedFunctionKey(candidate, boundVariables.get(), argumentTypes.size());
    }
    // TODO: this is a hack and should be removed
    if (signature.getName().startsWith(MAGIC_LITERAL_FUNCTION_PREFIX)) {
        List<TypeSignature> parameterTypes = signature.getArgumentTypes();
        // extract type from function name
        String typeName = signature.getName().substring(MAGIC_LITERAL_FUNCTION_PREFIX.length());
        // lookup the type
        Type type = typeManager.getType(parseTypeSignature(typeName));
        requireNonNull(type, format("Type %s not registered", typeName));
        // verify we have one parameter of the proper type
        checkArgument(parameterTypes.size() == 1, "Expected one argument to literal function, but got %s", parameterTypes);
        Type parameterType = typeManager.getType(parameterTypes.get(0));
        requireNonNull(parameterType, format("Type %s not found", parameterTypes.get(0)));
        return new SpecializedFunctionKey(magicLiteralFunction, BoundVariables.builder().setTypeVariable("T", parameterType).setTypeVariable("R", type).build(), 1);
    }
    throw new PrestoException(FUNCTION_IMPLEMENTATION_MISSING, format("%s not found", signature));
}

Example 90 with Type

use of com.facebook.presto.spi.type.Type in project presto by prestodb.

the class FunctionRegistry method resolveFunction.

public Signature resolveFunction(QualifiedName name, List<TypeSignatureProvider> parameterTypes) {
    Collection<SqlFunction> allCandidates = functions.get(name);
    List<SqlFunction> exactCandidates = allCandidates.stream().filter(function -> function.getSignature().getTypeVariableConstraints().isEmpty()).collect(Collectors.toList());
    Optional<Signature> match = matchFunctionExact(exactCandidates, parameterTypes);
    if (match.isPresent()) {
        return match.get();
    }
    List<SqlFunction> genericCandidates = allCandidates.stream().filter(function -> !function.getSignature().getTypeVariableConstraints().isEmpty()).collect(Collectors.toList());
    match = matchFunctionExact(genericCandidates, parameterTypes);
    if (match.isPresent()) {
        return match.get();
    }
    match = matchFunctionWithCoercion(allCandidates, parameterTypes);
    if (match.isPresent()) {
        return match.get();
    }
    List<String> expectedParameters = new ArrayList<>();
    for (SqlFunction function : allCandidates) {
        expectedParameters.add(format("%s(%s) %s", name, Joiner.on(", ").join(function.getSignature().getArgumentTypes()), Joiner.on(", ").join(function.getSignature().getTypeVariableConstraints())));
    }
    String parameters = Joiner.on(", ").join(parameterTypes);
    String message = format("Function %s not registered", name);
    if (!expectedParameters.isEmpty()) {
        String expected = Joiner.on(", ").join(expectedParameters);
        message = format("Unexpected parameters (%s) for function %s. Expected: %s", parameters, name, expected);
    }
    if (name.getSuffix().startsWith(MAGIC_LITERAL_FUNCTION_PREFIX)) {
        // extract type from function name
        String typeName = name.getSuffix().substring(MAGIC_LITERAL_FUNCTION_PREFIX.length());
        // lookup the type
        Type type = typeManager.getType(parseTypeSignature(typeName));
        requireNonNull(type, format("Type %s not registered", typeName));
        // verify we have one parameter of the proper type
        checkArgument(parameterTypes.size() == 1, "Expected one argument to literal function, but got %s", parameterTypes);
        Type parameterType = typeManager.getType(parameterTypes.get(0).getTypeSignature());
        requireNonNull(parameterType, format("Type %s not found", parameterTypes.get(0)));
        return getMagicLiteralFunctionSignature(type);
    }
    throw new PrestoException(FUNCTION_NOT_FOUND, message);
}