Examples with NamedTypeSignature com.facebook.presto.common.type.NamedTypeSignature used on opensource projects

Example 1 with NamedTypeSignature

use of com.facebook.presto.common.type.NamedTypeSignature in project presto by prestodb.

the class OrcTester method rowType.

public static Type rowType(Type... fieldTypes) {
    ImmutableList.Builder<TypeSignatureParameter> typeSignatureParameters = ImmutableList.builder();
    for (int i = 0; i < fieldTypes.length; i++) {
        String filedName = "field_" + i;
        Type fieldType = fieldTypes[i];
        typeSignatureParameters.add(TypeSignatureParameter.of(new NamedTypeSignature(Optional.of(new RowFieldName(filedName, false)), fieldType.getTypeSignature())));
    }
    return FUNCTION_AND_TYPE_MANAGER.getParameterizedType(StandardTypes.ROW, typeSignatureParameters.build());
}

Example 2 with NamedTypeSignature

use of com.facebook.presto.common.type.NamedTypeSignature in project presto by prestodb.

the class HiveTypeTranslator method translate.

@Override
public TypeInfo translate(Type type, Optional<HiveType> defaultHiveType) {
    if (BOOLEAN.equals(type)) {
        return HIVE_BOOLEAN.getTypeInfo();
    }
    if (BIGINT.equals(type)) {
        return HIVE_LONG.getTypeInfo();
    }
    if (INTEGER.equals(type)) {
        return HIVE_INT.getTypeInfo();
    }
    if (SMALLINT.equals(type)) {
        return HIVE_SHORT.getTypeInfo();
    }
    if (TINYINT.equals(type)) {
        return HIVE_BYTE.getTypeInfo();
    }
    if (REAL.equals(type)) {
        return HIVE_FLOAT.getTypeInfo();
    }
    if (DOUBLE.equals(type)) {
        return HIVE_DOUBLE.getTypeInfo();
    }
    if (type instanceof VarcharType) {
        VarcharType varcharType = (VarcharType) type;
        int varcharLength = varcharType.getLength();
        if (varcharLength <= HiveVarchar.MAX_VARCHAR_LENGTH) {
            return getVarcharTypeInfo(varcharLength);
        } else if (varcharLength == VarcharType.UNBOUNDED_LENGTH) {
            return HIVE_STRING.getTypeInfo();
        } else {
            throw new PrestoException(NOT_SUPPORTED, format("Unsupported Hive type: %s. Supported VARCHAR types: VARCHAR(<=%d), VARCHAR.", type, HiveVarchar.MAX_VARCHAR_LENGTH));
        }
    }
    if (type instanceof EnumType<?>) {
        return translate(((EnumType<?>) type).getValueType());
    }
    if (type instanceof CharType) {
        CharType charType = (CharType) type;
        int charLength = charType.getLength();
        if (charLength <= HiveChar.MAX_CHAR_LENGTH) {
            return getCharTypeInfo(charLength);
        }
        throw new PrestoException(NOT_SUPPORTED, format("Unsupported Hive type: %s. Supported CHAR types: CHAR(<=%d).", type, HiveChar.MAX_CHAR_LENGTH));
    }
    if (type instanceof TypeWithName) {
        return translate(((TypeWithName) type).getType());
    }
    if (VARBINARY.equals(type)) {
        return HIVE_BINARY.getTypeInfo();
    }
    if (DATE.equals(type)) {
        return HIVE_DATE.getTypeInfo();
    }
    if (TIMESTAMP.equals(type)) {
        return HIVE_TIMESTAMP.getTypeInfo();
    }
    if (type instanceof DecimalType) {
        DecimalType decimalType = (DecimalType) type;
        return new DecimalTypeInfo(decimalType.getPrecision(), decimalType.getScale());
    }
    if (isArrayType(type)) {
        TypeInfo elementType = translate(type.getTypeParameters().get(0), defaultHiveType);
        return getListTypeInfo(elementType);
    }
    if (isMapType(type)) {
        TypeInfo keyType = translate(type.getTypeParameters().get(0), defaultHiveType);
        TypeInfo valueType = translate(type.getTypeParameters().get(1), defaultHiveType);
        return getMapTypeInfo(keyType, valueType);
    }
    if (isRowType(type)) {
        ImmutableList.Builder<String> fieldNames = ImmutableList.builder();
        for (TypeSignatureParameter parameter : type.getTypeSignature().getParameters()) {
            if (!parameter.isNamedTypeSignature()) {
                throw new IllegalArgumentException(format("Expected all parameters to be named type, but got %s", parameter));
            }
            NamedTypeSignature namedTypeSignature = parameter.getNamedTypeSignature();
            if (!namedTypeSignature.getName().isPresent()) {
                throw new PrestoException(NOT_SUPPORTED, format("Anonymous row type is not supported in Hive. Please give each field a name: %s", type));
            }
            fieldNames.add(namedTypeSignature.getName().get());
        }
        return getStructTypeInfo(fieldNames.build(), type.getTypeParameters().stream().map(t -> translate(t, defaultHiveType)).collect(toList()));
    }
    return defaultHiveType.orElseThrow(() -> new PrestoException(NOT_SUPPORTED, format("No default Hive type provided for unsupported Hive type: %s", type))).getTypeInfo();
}

Example 3 with NamedTypeSignature

use of com.facebook.presto.common.type.NamedTypeSignature in project presto by prestodb.

the class MongoSession method guessFieldType.

private Optional<TypeSignature> guessFieldType(Object value) {
    if (value == null) {
        return Optional.empty();
    }
    TypeSignature typeSignature = null;
    if (value instanceof String) {
        typeSignature = createUnboundedVarcharType().getTypeSignature();
    } else if (value instanceof Integer || value instanceof Long) {
        typeSignature = BIGINT.getTypeSignature();
    } else if (value instanceof Boolean) {
        typeSignature = BOOLEAN.getTypeSignature();
    } else if (value instanceof Float || value instanceof Double) {
        typeSignature = DOUBLE.getTypeSignature();
    } else if (value instanceof Date) {
        typeSignature = TIMESTAMP.getTypeSignature();
    } else if (value instanceof ObjectId) {
        typeSignature = OBJECT_ID.getTypeSignature();
    } else if (value instanceof List) {
        List<Optional<TypeSignature>> subTypes = ((List<?>) value).stream().map(this::guessFieldType).collect(toList());
        if (subTypes.isEmpty() || subTypes.stream().anyMatch(t -> !t.isPresent())) {
            return Optional.empty();
        }
        Set<TypeSignature> signatures = subTypes.stream().map(Optional::get).collect(toSet());
        if (signatures.size() == 1) {
            typeSignature = new TypeSignature(StandardTypes.ARRAY, signatures.stream().map(TypeSignatureParameter::of).collect(Collectors.toList()));
        } else {
            // TODO: presto cli doesn't handle empty field name row type yet
            typeSignature = new TypeSignature(StandardTypes.ROW, IntStream.range(0, subTypes.size()).mapToObj(idx -> TypeSignatureParameter.of(new NamedTypeSignature(Optional.of(new RowFieldName(String.format("%s%d", implicitPrefix, idx + 1), false)), subTypes.get(idx).get()))).collect(toList()));
        }
    } else if (value instanceof Document) {
        List<TypeSignatureParameter> parameters = new ArrayList<>();
        for (String key : ((Document) value).keySet()) {
            Optional<TypeSignature> fieldType = guessFieldType(((Document) value).get(key));
            if (!fieldType.isPresent()) {
                return Optional.empty();
            }
            parameters.add(TypeSignatureParameter.of(new NamedTypeSignature(Optional.of(new RowFieldName(key, false)), fieldType.get())));
        }
        typeSignature = new TypeSignature(StandardTypes.ROW, parameters);
    }
    return Optional.ofNullable(typeSignature);
}

Example 4 with NamedTypeSignature

use of com.facebook.presto.common.type.NamedTypeSignature in project presto by prestodb.

the class OrcStorageManager method getType.

private Type getType(List<OrcType> types, int index) {
    OrcType type = types.get(index);
    switch(type.getOrcTypeKind()) {
        case BOOLEAN:
            return BOOLEAN;
        case LONG:
            return BIGINT;
        case DOUBLE:
            return DOUBLE;
        case STRING:
            return createUnboundedVarcharType();
        case VARCHAR:
            return createVarcharType(type.getLength().get());
        case CHAR:
            return createCharType(type.getLength().get());
        case BINARY:
            return VARBINARY;
        case DECIMAL:
            return DecimalType.createDecimalType(type.getPrecision().get(), type.getScale().get());
        case LIST:
            TypeSignature elementType = getType(types, type.getFieldTypeIndex(0)).getTypeSignature();
            return typeManager.getParameterizedType(StandardTypes.ARRAY, ImmutableList.of(TypeSignatureParameter.of(elementType)));
        case MAP:
            TypeSignature keyType = getType(types, type.getFieldTypeIndex(0)).getTypeSignature();
            TypeSignature valueType = getType(types, type.getFieldTypeIndex(1)).getTypeSignature();
            return typeManager.getParameterizedType(StandardTypes.MAP, ImmutableList.of(TypeSignatureParameter.of(keyType), TypeSignatureParameter.of(valueType)));
        case STRUCT:
            List<String> fieldNames = type.getFieldNames();
            ImmutableList.Builder<TypeSignatureParameter> fieldTypes = ImmutableList.builder();
            for (int i = 0; i < type.getFieldCount(); i++) {
                fieldTypes.add(TypeSignatureParameter.of(new NamedTypeSignature(Optional.of(new RowFieldName(fieldNames.get(i), false)), getType(types, type.getFieldTypeIndex(i)).getTypeSignature())));
            }
            return typeManager.getParameterizedType(StandardTypes.ROW, fieldTypes.build());
    }
    throw new PrestoException(RAPTOR_ERROR, "Unhandled ORC type: " + type);
}

Example 5 with NamedTypeSignature

use of com.facebook.presto.common.type.NamedTypeSignature in project presto by prestodb.

the class HiveType method getTypeSignature.

private static TypeSignature getTypeSignature(TypeInfo typeInfo) {
    switch(typeInfo.getCategory()) {
        case PRIMITIVE:
            Type primitiveType = getPrimitiveType((PrimitiveTypeInfo) typeInfo);
            if (primitiveType == null) {
                break;
            }
            return primitiveType.getTypeSignature();
        case MAP:
            MapTypeInfo mapTypeInfo = (MapTypeInfo) typeInfo;
            TypeSignature keyType = getTypeSignature(mapTypeInfo.getMapKeyTypeInfo());
            TypeSignature valueType = getTypeSignature(mapTypeInfo.getMapValueTypeInfo());
            return new TypeSignature(StandardTypes.MAP, ImmutableList.of(TypeSignatureParameter.of(keyType), TypeSignatureParameter.of(valueType)));
        case LIST:
            ListTypeInfo listTypeInfo = (ListTypeInfo) typeInfo;
            TypeSignature elementType = getTypeSignature(listTypeInfo.getListElementTypeInfo());
            return new TypeSignature(StandardTypes.ARRAY, ImmutableList.of(TypeSignatureParameter.of(elementType)));
        case STRUCT:
            StructTypeInfo structTypeInfo = (StructTypeInfo) typeInfo;
            List<TypeInfo> structFieldTypeInfos = structTypeInfo.getAllStructFieldTypeInfos();
            List<String> structFieldNames = structTypeInfo.getAllStructFieldNames();
            if (structFieldTypeInfos.size() != structFieldNames.size()) {
                throw new PrestoException(HiveErrorCode.HIVE_INVALID_METADATA, format("Invalid Hive struct type: %s", typeInfo));
            }
            ImmutableList.Builder<TypeSignatureParameter> typeSignatureBuilder = ImmutableList.builder();
            for (int i = 0; i < structFieldTypeInfos.size(); i++) {
                TypeSignature typeSignature = getTypeSignature(structFieldTypeInfos.get(i));
                // Lower case the struct field names.
                // Otherwise, Presto will refuse to write to columns whose struct type has field names containing upper case characters.
                // Users can't work around this by casting in their queries because Presto parser always lower case types.
                // TODO: This is a hack. Presto engine should be able to handle identifiers in a case insensitive way where necessary.
                String rowFieldName = structFieldNames.get(i).toLowerCase(Locale.US);
                typeSignatureBuilder.add(TypeSignatureParameter.of(new NamedTypeSignature(Optional.of(new RowFieldName(rowFieldName, false)), typeSignature)));
            }
            return new TypeSignature(StandardTypes.ROW, typeSignatureBuilder.build());
    }
    throw new PrestoException(NOT_SUPPORTED, format("Unsupported Hive type: %s", typeInfo));
}