The PyReindexer module provides a connector and its auxiliary tools for interaction with Reindexer

• pyreindexer.rx_connector
  • RxConnector
    • close
    • namespace_open
    • namespace_close
    • namespace_drop
    • namespaces_enum
    • index_add
    • index_update
    • index_drop
    • item_insert
    • item_update
    • item_upsert
    • item_delete
    • meta_put
    • meta_get
    • meta_delete
    • meta_enum
    • select
    • new_transaction
    • new_query
• pyreindexer.query_results
  • QueryResults
    • status
    • count
    • total_count
    • get_agg_results
    • get_explain_results
• pyreindexer.transaction
  • Transaction
    • insert
    • update
    • upsert
    • delete
    • commit
    • commit_with_count
    • rollback
• pyreindexer.point
  • Point
• pyreindexer.query
  • Query
    • where
    • where_query
    • where_subquery
    • where_composite
    • where_uuid
    • where_between_fields
    • open_bracket
    • close_bracket
    • match
    • dwithin
    • distinct
    • aggregate_sum
    • aggregate_avg
    • aggregate_min
    • aggregate_max
    • aggregate_facet
    • sort
    • sort_stpoint_distance
    • sort_stfield_distance
    • op_and
    • op_or
    • op_not
    • request_total
    • cached_total
    • limit
    • offset
    • debug
    • strict
    • explain
    • with_rank
    • execute
    • delete
    • set_object
    • set
    • drop
    • expression
    • update
    • must_execute
    • get
    • inner_join
    • join
    • left_join
    • merge
    • on
    • select
    • functions
    • equal_position
• pyreindexer.index_definition
  • IndexDefinition

pyreindexer.rx_connector

RxConnector Objects

class RxConnector(RaiserMixin)

RxConnector provides a binding to Reindexer upon two shared libraries (hereinafter - APIs): 'rawpyreindexerb.so' and 'rawpyreindexerc.so'. The first one is aimed to a builtin way usage. That API embeds Reindexer, so it could be used right in-place as is. The second one acts as a lightweight client which establishes a connection to Reindexer server via RPC. The APIs interfaces are completely the same.

Attributes:

api (module): An API module loaded dynamically for Reindexer calls
rx (int): A memory pointer to Reindexer instance
err_code (int): The API error code
err_msg (string): The API error message

RxConnector.close

def close() -> None

Closes an API instance with Reindexer resources freeing

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet

RxConnector.namespace_open

def namespace_open(namespace) -> None

Opens a namespace specified or creates a namespace if it does not exist

Arguments:

namespace (string): A name of a namespace

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.namespace_close

def namespace_close(namespace) -> None

Closes a namespace specified

Arguments:

namespace (string): A name of a namespace

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.namespace_drop

def namespace_drop(namespace) -> None

Drops a namespace specified

Arguments:

namespace (string): A name of a namespace

Raises:

Exception: Raises with an error message when Reindexer instance is not initialized yet
Exception: Raises with an error message of API return on non-zero error code

RxConnector.namespaces_enum

def namespaces_enum(enum_not_opened=False) -> List[Dict[str, str]]

Gets a list of namespaces available

Arguments:

enum_not_opened (bool, optional): An enumeration mode flag. If it is
    set then closed namespaces are in result list too. Defaults to False

Returns:

(:obj:`list` of :obj:`dict`): A list of dictionaries which describe each namespace

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.index_add

def index_add(namespace, index_def) -> None

Adds an index to the namespace specified

Arguments:

namespace (string): A name of a namespace
index_def (dict): A dictionary of index definition

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.index_update

def index_update(namespace, index_def) -> None

Updates an index in the namespace specified

Arguments:

namespace (string): A name of a namespace
index_def (dict): A dictionary of index definition

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.index_drop

def index_drop(namespace, index_name) -> None

Drops an index from the namespace specified

Arguments:

namespace (string): A name of a namespace
index_name (string): A name of an index

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.item_insert

def item_insert(namespace, item_def, precepts=None) -> None

Inserts an item with its precepts to the namespace specified

Arguments:

namespace (string): A name of a namespace
item_def (dict): A dictionary of item definition
precepts (:obj:`list` of :obj:`str`): A dictionary of index definition

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.item_update

def item_update(namespace, item_def, precepts=None) -> None

Updates an item with its precepts in the namespace specified

Arguments:

namespace (string): A name of a namespace
item_def (dict): A dictionary of item definition
precepts (:obj:`list` of :obj:`str`): A dictionary of index definition

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.item_upsert

def item_upsert(namespace, item_def, precepts=None) -> None

Updates an item with its precepts in the namespace specified. Creates the item if it not exists

Arguments:

namespace (string): A name of a namespace
item_def (dict): A dictionary of item definition
precepts (:obj:`list` of :obj:`str`): A dictionary of index definition

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.item_delete

def item_delete(namespace, item_def) -> None

Deletes an item from the namespace specified

Arguments:

namespace (string): A name of a namespace
item_def (dict): A dictionary of item definition

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.meta_put

def meta_put(namespace, key, value) -> None

Puts metadata to a storage of Reindexer by key

Arguments:

namespace (string): A name of a namespace
key (string): A key in a storage of Reindexer for metadata keeping
value (string): A metadata for storage

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.meta_get

def meta_get(namespace, key) -> str

Gets metadata from a storage of Reindexer by key specified

Arguments:

namespace (string): A name of a namespace
key (string): A key in a storage of Reindexer where metadata is kept

Returns:

string: A metadata value

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.meta_delete

def meta_delete(namespace, key) -> None

Deletes metadata from a storage of Reindexer by key specified

Arguments:

namespace (string): A name of a namespace
key (string): A key in a storage of Reindexer where metadata is kept

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.meta_enum

def meta_enum(namespace) -> List[str]

Gets a list of metadata keys from a storage of Reindexer

Arguments:

namespace (string): A name of a namespace

Returns:

(:obj:`list` of :obj:`str`): A list of all metadata keys

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.select

def select(query: str) -> QueryResults

Executes an SQL query and returns query results

Arguments:

query (string): An SQL query

Returns:

(:obj:`QueryResults`): A QueryResults iterator

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.new_transaction

def new_transaction(namespace) -> Transaction

Starts a new transaction and return the transaction object to processing

Arguments:

namespace (string): A name of a namespace

Returns:

(:obj:`Transaction`): A new transaction

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet
ApiError: Raises with an error message of API return on non-zero error code

RxConnector.new_query

def new_query(namespace: str) -> Query

Creates a new query and return the query object to processing

Arguments:

namespace (string): A name of a namespace

Returns:

(:obj:`Query`): A new query

Raises:

ConnectionError: Raises with an error message when Reindexer instance is not initialized yet

pyreindexer.query_results

QueryResults Objects

class QueryResults()

QueryResults is a disposable iterator of Reindexer results for such queries as SELECT etc. When the results are fetched the iterator closes and frees a memory of results buffer of Reindexer

Attributes:

api (module): An API module for Reindexer calls
err_code (int): The API error code
err_msg (string): The API error message
qres_wrapper_ptr (int): A memory pointer to Reindexer iterator object
qres_iter_count (int): A count of results for iterations
pos (int): The current result position in iterator

QueryResults.status

def status() -> None

Check status

Raises:

ApiError: Raises with an error message of API return on non-zero error code

QueryResults.count

def count() -> int

Returns a count of results for iterations

Returns

int: A count of results

QueryResults.total_count

def total_count() -> int

Returns a total or cached count of results

Returns

int: A total or cached count of results

QueryResults.get_agg_results

def get_agg_results() -> dict

Returns aggregation results for the current query

Returns

(:obj:`dict`): Dictionary with all results for the current query

Raises:

ApiError: Raises with an error message of API return on non-zero error code

QueryResults.get_explain_results

def get_explain_results() -> str

Returns explain results for the current query

Returns

(string): Formatted string with explain of results for the current query

Raises:

ApiError: Raises with an error message of API return on non-zero error code

pyreindexer.transaction

Transaction Objects

class Transaction()

An object representing the context of a Reindexer transaction

Attributes:

api (module): An API module for Reindexer calls
transaction_wrapper_ptr (int): A memory pointer to Reindexer transaction object
err_code (int): The API error code
err_msg (string): The API error message

Transaction.insert

def insert(item_def, precepts=None)

Inserts an item with its precepts to the transaction

Arguments:

item_def (dict): A dictionary of item definition
precepts (:obj:`list` of :obj:`str`): A dictionary of index definition

Raises:

TransactionError: Raises with an error message of API return if Transaction is over
ApiError: Raises with an error message of API return on non-zero error code

Transaction.update

def update(item_def, precepts=None)

Updates an item with its precepts to the transaction

Arguments:

item_def (dict): A dictionary of item definition
precepts (:obj:`list` of :obj:`str`): A dictionary of index definition

Raises:

TransactionError: Raises with an error message of API return if Transaction is over
ApiError: Raises with an error message of API return on non-zero error code

Transaction.upsert

def upsert(item_def, precepts=None)

Updates an item with its precepts to the transaction. Creates the item if it not exists

Arguments:

item_def (dict): A dictionary of item definition
precepts (:obj:`list` of :obj:`str`): A dictionary of index definition

Raises:

TransactionError: Raises with an error message of API return if Transaction is over
ApiError: Raises with an error message of API return on non-zero error code

Transaction.delete

def delete(item_def)

Deletes an item from the transaction

Arguments:

item_def (dict): A dictionary of item definition

Raises:

TransactionError: Raises with an error message of API return if Transaction is over
ApiError: Raises with an error message of API return on non-zero error code

Transaction.commit

def commit()

Applies changes

Raises:

TransactionError: Raises with an error message of API return if Transaction is over
ApiError: Raises with an error message of API return on non-zero error code

Transaction.commit_with_count

def commit_with_count() -> int

Applies changes and return the number of count of changed items

Raises:

TransactionError: Raises with an error message of API return if Transaction is over
ApiError: Raises with an error message of API return on non-zero error code

Transaction.rollback

def rollback()

Rollbacks changes

Raises:

TransactionError: Raises with an error message of API return if Transaction is over
ApiError: Raises with an error message of API return on non-zero error code

pyreindexer.point

Point Objects

class Point()

An object representing the context of a Reindexer 2D point

Attributes:

x (float): x coordinate of the point
y (float): y coordinate of the point

pyreindexer.query

Query Objects

class Query()

An object representing the context of a Reindexer query

Attributes:

api (module): An API module for Reindexer calls
query_wrapper_ptr (int): A memory pointer to Reindexer query object
err_code (int): The API error code
err_msg (string): The API error message
root (:object: Optional[`Query`]): The root query of the Reindexer query
join_queries (list[:object:`Query`]): The list of join Reindexer query objects
merged_queries (list[:object:`Query`]): The list of merged Reindexer query objects

Query.where

def where(
        index: str,
        condition: CondType,
        keys: Union[simple_types, tuple[list[simple_types],
                                        ...]] = None) -> Query

Adds where condition to DB query with args

Arguments:

index (string): Field name used in condition clause
condition (:enum:`CondType`): Type of condition
keys (union[simple_types, (list[simple_types], ...)]):
    Value of index to be compared with. For composite indexes keys must be list,
    with value of each sub-index

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

ApiError: Raises with an error message of API return on non-zero error code

Query.where_query

def where_query(
        sub_query: Query,
        condition: CondType,
        keys: Union[simple_types, tuple[list[simple_types],
                                        ...]] = None) -> Query

Adds sub-query where condition to DB query with args

Arguments:

sub_query (:obj:`Query`): Field name used in condition clause
condition (:enum:`CondType`): Type of condition
keys (union[simple_types, (list[simple_types], ...)]):
    Value of index to be compared with. For composite indexes keys must be list,
    with value of each sub-index

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

ApiError: Raises with an error message of API return on non-zero error code

Query.where_subquery

def where_subquery(index: str, condition: CondType, sub_query: Query) -> Query

Adds sub-query where condition to DB query

Arguments:

index (string): Field name used in condition clause
condition (:enum:`CondType`): Type of condition
sub_query (:obj:`Query`): Field name used in condition clause

Returns:

(:obj:`Query`): Query object for further customizations

Query.where_composite

def where_composite(index: str, condition: CondType,
                    keys: tuple[list[simple_types], ...]) -> Query

Adds where condition to DB query with interface args for composite indexes

Arguments:

index (string): Field name used in condition clause
condition (:enum:`CondType`): Type of condition
keys (list[simple_types], ...): Values of composite index to be compared with (value of each sub-index).
    Supported variants:
        ([1, "test1"], [2, "test2"])
        [[1, "test1"], [2, "test2"]])
        ([1, "testval1"], )
        [[1, "testval1"]]
        (1, "testval1")

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

ApiError: Raises with an error message of API return on non-zero error code

Query.where_uuid

def where_uuid(index: str, condition: CondType, *uuids: UUID) -> Query

Adds where condition to DB query with UUID as string args. This function applies binary encoding to the UUID value. index MUST be declared as uuid index in this case

Arguments:

index (string): Field name used in condition clause
condition (:enum:`CondType`): Type of condition
uuids (*:obj:`UUID`): Value of index to be compared with. For composite indexes uuids must be list,
    with value of each sub-index

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

ApiError: Raises with an error message of API return on non-zero error code

Query.where_between_fields

def where_between_fields(first_field: str, condition: CondType,
                         second_field: str) -> Query

Adds comparing two fields where condition to DB query

Arguments:

first_field (string): First field name used in condition clause
condition (:enum:`CondType`): Type of condition
second_field (string): Second field name used in condition clause

Returns:

(:obj:`Query`): Query object for further customizations

Query.open_bracket

def open_bracket() -> Query

Opens bracket for where condition to DB query

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

ApiError: Raises with an error message of API return on non-zero error code

Query.close_bracket

def close_bracket() -> Query

Closes bracket for where condition to DB query

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

ApiError: Raises with an error message of API return on non-zero error code

Query.match

def match(index: str, *keys: str) -> Query

Adds string EQ-condition to DB query with string args

Arguments:

index (string): Field name used in condition clause
keys (*string): Value of index to be compared with. For composite indexes keys must be list,
    with value of each sub-index

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

ApiError: Raises with an error message of API return on non-zero error code

Query.dwithin

def dwithin(index: str, point: Point, distance: float) -> Query

Adds DWithin condition to DB query

Arguments:

index (string): Field name used in condition clause
point (:obj:`Point`): Point object used in condition clause
distance (float): Distance in meters between point

Returns:

(:obj:`Query`): Query object for further customizations

Query.distinct

def distinct(index: str) -> Query

Performs distinct for a certain index. Return only items with uniq value of field

Arguments:

index (string): Field name for distinct operation

Returns:

(:obj:`Query`): Query object for further customizations

Query.aggregate_sum

def aggregate_sum(index: str) -> Query

Performs a summation of values for a specified index

Arguments:

index (string): Field name for sum operation

Returns:

(:obj:`Query`): Query object for further customizations

Query.aggregate_avg

def aggregate_avg(index: str) -> Query

Finds for the average at the specified index

Arguments:

index (string): Field name for sum operation

Returns:

(:obj:`Query`): Query object for further customizations

Query.aggregate_min

def aggregate_min(index: str) -> Query

Finds for the minimum at the specified index

Arguments:

index (string): Field name for sum operation

Returns:

(:obj:`Query`): Query object for further customizations

Query.aggregate_max

def aggregate_max(index: str) -> Query

Finds for the maximum at the specified index

Arguments:

index (string): Field name for sum operation

Returns:

(:obj:`Query`): Query object for further customizations

Query.aggregate_facet

def aggregate_facet(*fields: str) -> Query._AggregateFacet

Gets fields facet value. Applicable to multiple data fields and the result of that could be sorted by any data column or count and cut off by offset and limit. In order to support this functionality this method returns AggregationFacetRequest which has methods sort, limit and offset

Arguments:

fields (*string): Fields any data column name or `count`, fields should not be empty

Returns:

(:obj:`_AggregateFacet`): Request object for further customizations

Query.sort

def sort(
    index: str,
    desc: bool = False,
    forced_sort_values: Union[simple_types, tuple[list[simple_types],
                                                  ...]] = None
) -> Query

Applies sort order to return from query items. If forced_sort_values argument specified, then items equal to values, if found will be placed in the top positions. Forced sort is support for the first sorting field only

Arguments:

index (string): The index name
desc (bool): Sort in descending order
forced_sort_values (union[simple_types, (list[simple_types], ...)]):
    Value of index to match. For composite indexes keys must be list, with value of each sub-index

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

ApiError: Raises with an error message of API return on non-zero error code

Query.sort_stpoint_distance

def sort_stpoint_distance(index: str, point: Point, desc: bool) -> Query

Applies geometry sort order to return from query items. Wrapper for geometry sorting by shortest distance between geometry field and point (ST_Distance)

Arguments:

index (string): The index name
point (:obj:`Point`): Point object used in sorting operation
desc (bool): Sort in descending order

Returns:

(:obj:`Query`): Query object for further customizations

Query.sort_stfield_distance

def sort_stfield_distance(first_field: str, second_field: str,
                          desc: bool) -> Query

Applies geometry sort order to return from query items. Wrapper for geometry sorting by shortest distance between 2 geometry fields (ST_Distance)

Arguments:

first_field (string): First field name used in condition
second_field (string): Second field name used in condition
desc (bool): Sort in descending order

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

ApiError: Raises with an error message of API return on non-zero error code

Query.op_and

def op_and() -> Query

Next condition will be added with AND. This is the default operation for WHERE statement. Do not have to be called explicitly in user's code. Used in DSL conversion

Returns:

(:obj:`Query`): Query object for further customizations

Query.op_or

def op_or() -> Query

Next condition will be added with OR. Implements short-circuiting: if the previous condition is successful the next will not be evaluated, but except Join conditions

Returns:

(:obj:`Query`): Query object for further customizations

Query.op_not

def op_not() -> Query

Next condition will be added with NOT AND. Implements short-circuiting: if the previous condition is failed the next will not be evaluated

Returns:

(:obj:`Query`): Query object for further customizations

Query.request_total

def request_total() -> Query

Requests total items calculation

Arguments:

total_name (string, optional): Name to be requested

Returns:

(:obj:`Query`): Query object for further customizations

Query.cached_total

def cached_total() -> Query

Requests cached total items calculation

Arguments:

total_name (string, optional): Name to be requested

Returns:

(:obj:`Query`): Query object for further customizations

Query.limit

def limit(limit_items: int) -> Query

Sets a limit (count) of returned items. Analog to sql LIMIT rowsNumber

Arguments:

limit_items (int): Number of rows to get from result set

Returns:

(:obj:`Query`): Query object for further customizations

Query.offset

def offset(start_offset: int) -> Query

Sets the number of the first selected row from result query

Arguments:

limit_items (int): Index of the first row to get from result set

Returns:

(:obj:`Query`): Query object for further customizations

Query.debug

def debug(level: LogLevel) -> Query

Changes debug log level on server

Arguments:

level (:enum:`LogLevel`): Debug log level on server

Returns:

(:obj:`Query`): Query object for further customizations

Query.strict

def strict(mode: StrictMode) -> Query

Changes strict mode

Arguments:

mode (:enum:`StrictMode`): Strict mode

Returns:

(:obj:`Query`): Query object for further customizations

Query.explain

def explain() -> Query

Enables explain query

Returns:

(:obj:`Query`): Query object for further customizations

Query.with_rank

def with_rank() -> Query

Outputs fulltext rank. Allowed only with fulltext query

Returns:

(:obj:`Query`): Query object for further customizations

Query.execute

def execute() -> QueryResults

Executes a select query

Returns:

(:obj:`QueryResults`): A QueryResults iterator

Raises:

ApiError: Raises with an error message when query is in an invalid state
ApiError: Raises with an error message of API return on non-zero error code

Query.delete

def delete() -> int

Executes a query, and delete items, matches query

Returns:

(int): Number of deleted elements

Raises:

QueryError: Raises with an error message when query is in an invalid state
ApiError: Raises with an error message of API return on non-zero error code

Query.set_object

def set_object(field: str, values: list[simple_types]) -> Query

Adds an update query to an object field for an update query

Arguments:

field (string): Field name
values (list[simple_types]): List of values to add

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

QueryError: Raises with an error message if no values are specified
ApiError: Raises with an error message of API return on non-zero error code

Query.set

def set(field: str, values: list[simple_types]) -> Query

Adds a field update request to the update request

Arguments:

field (string): Field name
values (list[simple_types]): List of values to add

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

ApiError: Raises with an error message of API return on non-zero error code

Query.drop

def drop(index: str) -> Query

Drops a value for a field

Arguments:

index (string): Field name for drop operation

Returns:

(:obj:`Query`): Query object for further customizations

Query.expression

def expression(field: str, value: str) -> Query

Updates indexed field by arithmetical expression

Arguments:

field (string): Field name
value (string): New value expression for field

Returns:

(:obj:`Query`): Query object for further customizations

Query.update

def update() -> QueryResults

Executes update query, and update fields in items, which matches query

Returns:

(:obj:`QueryResults`): A QueryResults iterator

Raises:

QueryError: Raises with an error message when query is in an invalid state
ApiError: Raises with an error message of API return on non-zero error code

Query.must_execute

def must_execute() -> QueryResults

Executes a query, and update fields in items, which matches query, with status check

Returns:

(:obj:`QueryResults`): A QueryResults iterator

Raises:

ApiError: Raises with an error message when query is in an invalid state
ApiError: Raises with an error message of API return on non-zero error code

Query.get

def get() -> (str, bool)

Executes a query, and return 1 JSON item

Returns:

(:tuple:string,bool): 1st string item and found flag

Raises:

ApiError: Raises with an error message when query is in an invalid state
ApiError: Raises with an error message of API return on non-zero error code

Query.inner_join

def inner_join(query: Query, field: str) -> Query

Joins 2 queries. Items from the 1-st query are filtered by and expanded with the data from the 2-nd query

Arguments:

query (:obj:`Query`): Query object to left join
field (string): Joined field name. As unique identifier for the join between this query and `join_query`.
    Parameter in order for InnerJoin to work: namespace of `query` contains `field` as one of its fields
    marked as `joined`

Returns:

(:obj:`Query`): Query object for further customizations

Query.join

def join(query: Query, field: str) -> Query

Join is an alias for LeftJoin. Joins 2 queries. Items from this query are expanded with the data from the query

Arguments:

query (:obj:`Query`): Query object to left join
field (string): Joined field name. As unique identifier for the join between this query and `join_query`

Returns:

(:obj:`Query`): Query object for further customizations

Query.left_join

def left_join(join_query: Query, field: str) -> Query

Joins 2 queries. Items from this query are expanded with the data from the join_query. One of the conditions below must hold for field parameter in order for LeftJoin to work: namespace of join_query contains field as one of its fields marked as joined

Arguments:

query (:obj:`Query`): Query object to left join
field (string): Joined field name. As unique identifier for the join between this query and `join_query`

Returns:

(:obj:`Query`): Query object for further customizations

Query.merge

def merge(query: Query) -> Query

Merges queries of the same type

Arguments:

query (:obj:`Query`): Query object to merge

Returns:

(:obj:`Query`): Query object for further customizations

Query.on

def on(index: str, condition: CondType, join_index: str) -> Query

On specifies join condition

Arguments:

index (string): Field name from `Query` namespace should be used during join
condition (:enum:`CondType`): Type of condition, specifies how `Query` will be joined with the latest join query issued on `Query` (e.g. `EQ`/`GT`/`SET`/...)
join_index (string): Index-field name from namespace for the latest join query issued on `Query` should be used during join

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

QueryError: Raises with an error message when query is in an invalid state

Query.select

def select(*fields: str) -> Query

Sets list of columns in this namespace to be finally selected. The columns should be specified in the same case as the jsonpaths corresponding to them. Non-existent fields and fields in the wrong case are ignored. If there are no fields in this list that meet these conditions, then the filter works as "*"

Arguments:

fields (*string): List of columns to be selected

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

ApiError: Raises with an error message of API return on non-zero error code

Query.functions

def functions(*functions: str) -> Query

Adds sql-functions to query

Arguments:

functions (*string): Functions declaration

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

ApiError: Raises with an error message of API return on non-zero error code

Query.equal_position

def equal_position(*equal_position: str) -> Query

Adds equal position fields to arrays queries

Arguments:

equal_poses (*string): Equal position fields to arrays queries

Returns:

(:obj:`Query`): Query object for further customizations

Raises:

ApiError: Raises with an error message of API return on non-zero error code

pyreindexer.index_definition

IndexDefinition Objects

class IndexDefinition(dict)

IndexDefinition is a dictionary subclass which allows to construct and manage indexes more efficiently. NOT IMPLEMENTED YET. USE FIELDS DESCRIPTION ONLY.

Arguments:

name (str): An index name.
json_paths (:obj:`list` of :obj:`str`): A name for mapping a value to a json field.
field_type (str): A type of field. Possible values are: `int`, `int64`, `double`, `string`, `bool`, `composite`.
index_type (str): An index type. Possible values are: `hash`, `tree`, `text`, `-`.
is_pk (bool): True if a field is a primary key.
is_array (bool): True if an index is an array.
is_dense (bool): True if an index is dense. reduce index size. Saves 8 bytes per unique key value for 'hash'
    and 'tree' index types.
    For '-' index type saves 4-8 bytes per each element. Useful for indexes with high selectivity,
    but for tree and hash indexes with low selectivity could
    significantly decrease update performance.
is_sparse (bool): True if a value of an index may be not presented.
collate_mode (str): Sets an order of values by collate mode. Possible values are:
    `none`, `ascii`, `utf8`, `numeric`, `custom`.
sort_order_letters (str): Order for a sort sequence for a custom collate mode.
config (dict): A config for a fulltext engine.
[More](https://github.com/Restream/reindexer/blob/master/fulltext.md).