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

Example 1 with DECIMAL

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

the class ParquetPageSourceFactory method checkSchemaMatch.

public static boolean checkSchemaMatch(org.apache.parquet.schema.Type parquetType, Type type) {
    String prestoType = type.getTypeSignature().getBase();
    if (parquetType instanceof GroupType) {
        GroupType groupType = parquetType.asGroupType();
        switch(prestoType) {
            case ROW:
                RowType rowType = (RowType) type;
                Map<String, Type> prestoFieldMap = rowType.getFields().stream().collect(Collectors.toMap(field -> field.getName().get().toLowerCase(Locale.ENGLISH), field -> field.getType()));
                for (int i = 0; i < groupType.getFields().size(); i++) {
                    org.apache.parquet.schema.Type parquetFieldType = groupType.getFields().get(i);
                    String fieldName = parquetFieldType.getName().toLowerCase(Locale.ENGLISH);
                    Type prestoFieldType = prestoFieldMap.get(fieldName);
                    if (prestoFieldType != null && !checkSchemaMatch(parquetFieldType, prestoFieldType)) {
                        return false;
                    }
                }
                return true;
            case MAP:
                if (groupType.getFields().size() != 1) {
                    return false;
                }
                org.apache.parquet.schema.Type mapKeyType = groupType.getFields().get(0);
                if (mapKeyType instanceof GroupType) {
                    GroupType mapGroupType = mapKeyType.asGroupType();
                    return mapGroupType.getFields().size() == 2 && checkSchemaMatch(mapGroupType.getFields().get(0), type.getTypeParameters().get(0)) && checkSchemaMatch(mapGroupType.getFields().get(1), type.getTypeParameters().get(1));
                }
                return false;
            case ARRAY:
                /* array has a standard 3-level structure with middle level repeated group with a single field:
                     *  optional group my_list (LIST) {
                     *     repeated group element {
                     *        required type field;
                     *     };
                     *  }
                     *  Backward-compatibility support for 2-level arrays:
                     *   optional group my_list (LIST) {
                     *      repeated type field;
                     *   }
                     *  field itself could be primitive or group
                     */
                if (groupType.getFields().size() != 1) {
                    return false;
                }
                org.apache.parquet.schema.Type bagType = groupType.getFields().get(0);
                if (bagType.isPrimitive()) {
                    return checkSchemaMatch(bagType.asPrimitiveType(), type.getTypeParameters().get(0));
                }
                GroupType bagGroupType = bagType.asGroupType();
                return checkSchemaMatch(bagGroupType, type.getTypeParameters().get(0)) || (bagGroupType.getFields().size() == 1 && checkSchemaMatch(bagGroupType.getFields().get(0), type.getTypeParameters().get(0)));
            default:
                return false;
        }
    }
    checkArgument(parquetType.isPrimitive(), "Unexpected parquet type for column: %s " + parquetType.getName());
    PrimitiveTypeName parquetTypeName = parquetType.asPrimitiveType().getPrimitiveTypeName();
    switch(parquetTypeName) {
        case INT64:
            return prestoType.equals(BIGINT) || prestoType.equals(DECIMAL) || prestoType.equals(TIMESTAMP);
        case INT32:
            return prestoType.equals(INTEGER) || prestoType.equals(BIGINT) || prestoType.equals(SMALLINT) || prestoType.equals(DATE) || prestoType.equals(DECIMAL) || prestoType.equals(TINYINT);
        case BOOLEAN:
            return prestoType.equals(StandardTypes.BOOLEAN);
        case FLOAT:
            return prestoType.equals(REAL);
        case DOUBLE:
            return prestoType.equals(StandardTypes.DOUBLE);
        case BINARY:
            return prestoType.equals(VARBINARY) || prestoType.equals(VARCHAR) || prestoType.startsWith(CHAR) || prestoType.equals(DECIMAL);
        case INT96:
            return prestoType.equals(TIMESTAMP);
        case FIXED_LEN_BYTE_ARRAY:
            return prestoType.equals(DECIMAL);
        default:
            throw new IllegalArgumentException("Unexpected parquet type name: " + parquetTypeName);
    }
}