HOME

Mini Shell 1.0
DIR:/opt/alt/python38/lib64/python3.8/site-packages/playhouse/__pycache__/
Current File : //opt/alt/python38/lib64/python3.8/site-packages/playhouse/__pycache__/sqlite_ext.cpython-38.pyc
U

S��W�@sddZddlZddlZddlZddlZddlZddlZddlZzddlZ	Wne
k
rdddl	Z	YnXzddlmZWne
k
r�YnXddl
Tddl
mZddl
mZddl
mZddl
mZdd	l
mZdd
l
mZddl
mZddl
mZdd
l
mZddl
mZddl
mZddl
mZzddlmZWne
k
�rNdZYnXejddk�rdeZdZ dZ!ej"dd�dk�r�d�p�dZ#dZ$Gdd�de�Z%Gdd�de�Z&Gdd�de'�Z(Gdd �d e)�Z*Gd!d"�d"e+�Z,Gd#d$�d$e-�Z.Gd%d&�d&e.e+�Z/Gd'd(�d(e.e0�Z1Gd)d*�d*e.e2�Z3Gd+d,�d,e.e4�Z5Gd-d.�d.e6�Z7Gd/d0�d0e7�Z8Gd1d2�d2e8�Z9d3Z:e;d4d5d6d7e<d8�d9d:d;d<d=d>d?d@g
�e;dA�Be;e:�Be;e:�=��BZ>e;dBdC�e?dD�D��Z@e�AdE�ZBGdFdG�dGe8�ZCd]dHdI�ZDGdJdK�dKe�ZEejFdLdM�dNdO��ZGGdPdQ�dQeH�ZIGdRdS�dSe�ZJdTe_KeI�LejKdUi�dVdT�ZMdWdX�ZNdYdZ�ZOd[d\�ZPdS)^a�
Sqlite3 extensions
==================

* Define custom aggregates, collations and functions
* Basic support for virtual tables
* Basic support for FTS3/4
* Specify isolation level in transactions

Example usage of the Full-text search:

class Document(FTSModel):
    title = TextField()  # type affinities are ignored in FTS
    content = TextField()

Document.create_table(tokenize='porter')  # use the porter stemmer

# populate the documents using normal operations.
for doc in documents:
    Document.create(title=doc['title'], content=doc['content'])

# use the "match" operation for FTS queries.
matching_docs = Document.select().where(match(Document.title, 'some query'))

# to sort by best match, use the custom "rank" function.
best_docs = (Document
             .select(Document, Document.rank('score'))
             .where(match(Document.title, 'some query'))
             .order_by(SQL('score')))

# or use the shortcut method.
best_docs = Document.match('some phrase')
�N)�
TableFunction)�*)�EnclosedClause)�Entity)�
Expression)�Node)�OP)�SqliteQueryCompiler)�_AutoPrimaryKeyField)�sqlite3)�transaction)�_sqlite_date_part)�_sqlite_date_trunc)�_sqlite_regexp)�_sqlite_ext�ZpcnalxZpcx)r��ZFTS4ZFTS3)r�	rc@seZdZdZdZdS)�
RowIDFieldz�
    Field used to access hidden primary key on FTS5 or any other SQLite
    table that does not have a separately-defined primary key.
    �rowidN��__name__�
__module__�__qualname__�__doc__Z_column_name�rr�/sqlite_ext.pyrOsrc@seZdZdZdZdS)�
DocIDFieldz9Field used to access hidden primary key on FTS3/4 tables.�docidNrrrrrrWsrcs eZdZdZ�fdd�Z�ZS)�PrimaryKeyAutoIncrementFielda
    SQLite by default uses MAX(primary key) + 1 to set the ID on a new row.
    Using the `AUTOINCREMENT` field, the IDs will increase monotonically
    even if rows are deleted. Use this if you need to guarantee IDs are not
    re-used in the event of deletion.
    cstt|��|�}|td�gS)NZ
AUTOINCREMENT)�superr �__ddl__�SQL)�selfZcolumn_typeZddl��	__class__rrr"csz$PrimaryKeyAutoIncrementField.__ddl__)rrrrr"�
__classcell__rrr%rr \sr c@s�eZdZdd�Zdd�Zdd�Zddd	�Zd
d�Zdd
�Zdd�Z	dd�Z
dd�Zdd�Zdd�Z
ddd�Zd dd�Zd!dd�ZdS)"�	JSONFieldc	Cs6|dk	r2zt�|�WSttfk
r0|YSXdS�N)�json�loads�	TypeError�
ValueError�r$�valuerrr�python_valueis
zJSONField.python_valuecCs|dk	rt�|�SdSr))r*�dumpsr.rrr�db_valuepszJSONField.db_valuecCs|�d�s|sd|Sd|S)N�[z$%sz$.%s)�
startswith�r$�pathrrr�
clean_pathtszJSONField.clean_pathNcCs |rt�||�|��St�|�Sr))�fnZjson_array_lengthr7r5rrr�lengthyszJSONField.lengthcCst�||�|��Sr))r8Zjson_extractr7r5rrr�extract~szJSONField.extractcCs$t|tttf�r t�t�|��S|Sr))�
isinstance�list�tuple�dictr8r*r1r.rrr�_value_for_insertion�szJSONField._value_for_insertioncCslt|�}|ddkrtd��g}td|d�D]0}|�|�||��|�|�||d��q,||f|��S)N�rz%Mismatched path and value parameters.�)�lenr-�range�appendr7r?)r$r8�pairsZnpairs�accum�irrr�_insert_like�szJSONField._insert_likecGs|�tj|�Sr))rHr8Zjson_insert�r$rErrr�insert�szJSONField.insertcGs|�tj|�Sr))rHr8Zjson_replacerIrrr�replace�szJSONField.replacecGs|�tj|�Sr))rHr8Zjson_setrIrrr�set�sz
JSONField.setcstj�f�fdd�|D���S)Ncsg|]}��|��qSr)r7)�.0r6�r$rr�
<listcomp>�sz$JSONField.remove.<locals>.<listcomp>)r8Zjson_remove)r$�pathsrrNr�remove�szJSONField.removecCs |rt�||�|��St�|�Sr))r8�	json_typer7r5rrrrR�szJSONField.json_typecCs |rt�||�|��St�|�S)a?
        Schema of `json_each` and `json_tree`:

        key,
        value,
        type TEXT (object, array, string, etc),
        atom (value for primitive/scalar types, NULL for array and object)
        id INTEGER (unique identifier for element)
        parent INTEGER (unique identifier of parent element or NULL)
        fullkey TEXT (full path describing element)
        path TEXT (path to the container of the current element)
        json JSON hidden (1st input parameter to function)
        root TEXT hidden (2nd input parameter, path at which to start)
        )r8Z	json_eachr7r5rrr�children�szJSONField.childrencCs |rt�||�|��St�|�Sr))r8Z	json_treer7r5rrr�tree�szJSONField.tree)N)N)N)N)rrrr0r2r7r9r:r?rHrJrKrLrQrRrSrTrrrrr(hs



r(cs.eZdZdZd�fdd�	Z�fdd�Z�ZS)	�SearchFielda-
    Field class to be used with full-text search extension. Since the FTS
    extensions do not support any field types besides `TEXT`, and furthermore
    do not support secondary indexes, using this field will prevent you
    from mistakenly creating the wrong kind of field on your FTS table.
    FNcs:d||d�}||_|r$td�g|d<tt|�jf|�dS)NT)Znull�	db_column�coerceZ	UNINDEXEDZconstraints)�
_unindexedr#r!rU�__init__)r$Z	unindexedrVrW�_�kwargsr%rrrY�s
zSearchField.__init__cstt|�jf|�}|j|_|Sr))r!rU�
clone_baserX)r$r[�cloner%rrr\�szSearchField.clone_base)FNN)rrrrrYr\r'rrr%rrU�srUcs eZdZdZ�fdd�Z�ZS)�_VirtualFieldMixinzx
    Field mixin to support virtual table attributes that may not correspond
    to actual columns in the database.
    cs"tt|��||�|j�|�dSr))r!r^�add_to_class�_metaZremove_field)r$�model_class�namer%rrr_�sz_VirtualFieldMixin.add_to_class)rrrrr_r'rrr%rr^�sr^c@seZdZdS)�VirtualFieldN�rrrrrrrrc�srcc@seZdZdS)�VirtualIntegerFieldNrdrrrrre�srec@seZdZdS)�VirtualCharFieldNrdrrrrrf�srfc@seZdZdS)�VirtualFloatFieldNrdrrrrrg�srgc@s4eZdZGdd�d�Zedd��Zed	dd��ZdS)
�VirtualModelc@seZdZdZdZiZdS)zVirtualModel.MetaTN)rrrZ
virtual_table�extension_module�extension_optionsrrrr�Meta�srkcKs|Sr)r)�cls�optionsrrr�
clean_options�szVirtualModel.clean_optionsFcKs.|r|��rdS|jjj||d�|��dS)N)rm)Ztable_existsr`�database�create_tableZ_create_indexes)rlZ
fail_silentlyrmrrrrp�szVirtualModel.create_tableN)F)rrrrk�classmethodrnrprrrrrh�s

rhc@seZdZedd��ZdS)�BaseFTSModelcKsB|�d�}|�d�}|r$d||d<t|t�r>|dkr>d|d<|S)N�tokenize�contentz"%s"�z'')�getr;�
basestring)rlrmrsrtrrrrn�s

zBaseFTSModel.clean_optionsN)rrrrqrnrrrrrr�srrc@s�eZdZdZe�ZGdd�d�Zedd��Zedd��Z	edd	��Z
ed
d��Zedd
��Zed(dd��Z
ed)dd��Zedd��Zedd��Zedd��Zedd��Zedd��Zed*d"d#��Zed+d$d%��Zed,d&d'��ZdS)-�FTSModela_
    VirtualModel class for creating tables that use either the FTS3 or FTS4
    search extensions. Peewee automatically determines which version of the
    FTS extension is supported and will use FTS4 if possible.

    Note: because FTS5 is significantly different from FTS3 and FTS4, there is
    a separate model class for FTS5 virtual tables.
    c@seZdZeZdS)z
FTSModel.MetaN)rrr�FTS_VERrirrrrrksrkcCs|jjjdkrtd��dS)Nrz:FTSModel classes must use the default `docid` primary key.)r`�primary_keyrb�ImproperlyConfigured�rlrrr�validate_models�zFTSModel.validate_modelcCs(|jj}|jj�d|||f�}|��S)Nz INSERT INTO %s(%s) VALUES('%s');)r`�db_tablero�execute_sqlZfetchone)rl�cmd�tbl�resrrr�_fts_cmds
�zFTSModel._fts_cmdcCs
|�d�S)N�optimize�r�r|rrrr�$szFTSModel.optimizecCs
|�d�S)N�rebuildr�r|rrrr�(szFTSModel.rebuildcCs
|�d�S)Nzintegrity-checkr�r|rrr�integrity_check,szFTSModel.integrity_check���cCs|�d||f�S)Nzmerge=%s,%sr�)rlZblocksZsegmentsrrr�merge0szFTSModel.mergeTcCs|�d|rdpd�S)Nzautomerge=%s�1�0r�)rl�staterrr�	automerge4szFTSModel.automergecCst|��|�S�zU
        Generate a `MATCH` expression appropriate for searching this table.
        ��match�	as_entity�rl�termrrrr�8szFTSModel.matchcGstjt�|��t�f|��Sr))r8�fts_rank�	matchinfor��FTS_MATCHINFO_FORMAT_SIMPLE�rl�weightsrrr�rank?s��z
FTSModel.rankcGs t�|��t�}tj|f|��Sr))r8r�r��FTS_MATCHINFO_FORMAT�fts_bm25�rlr��
match_inforrr�bm25Dsz
FTSModel.bm25cGs t�|��t�}tj|f|��Sr))r8r�r�r��
fts_lucener�rrr�luceneIszFTSModel.lucenec
Cs�|s|�}nJt|t�rNg}|jjD] }	|�|�|	|�|	jd���q"||�}n||�}d}
|}|rp||�|�f}
|r�|s�t|�}|j	|
��
|�|���|�S)N��?r)
r;r>r`�declared_fieldsrDrvrb�aliasr#�select�wherer��order_by)rlr�r��
with_score�score_aliasZscore_fn�explicit_orderingr��weight_args�field�	selectionr�rrr�_searchNs.
�
���zFTSModel._searchNF�scorecCs|�|||||j|�S��'Full-text search using selected `term`.)r�r��rlr�r�r�r�r�rrr�searchhs�zFTSModel.searchcCs|�|||||j|�S�z:Full-text search for selected `term` using BM25 algorithm.)r�r�r�rrr�search_bm25ts�zFTSModel.search_bm25cCs|�|||||j|�Sr�)r�r�r�rrr�
search_lucene�s�zFTSModel.search_lucene)r�r�)T)NFr�F)NFr�F)NFr�F)rrrrrrrkrqr}r�r�r�r�r�r�r�r�r�r�r�r�r�r�rrrrrxsR










���rxZabcdefghijklmnopqrstuvwxyz�	� �,�"��(�)�{�}r�:rZ�+�
0123456789cCs g|]}t|�tkrt|��qSr)�chr�	_alphanum)rM�prrrrO�srO�z(?:[^\s"]|"(?:\.|[^"])*")+c@s�eZdZdZe�ZGdd�d�Zdddd�Zedd	��Z	ed
d��Z
edd
��Zee
d�fdd��Zedd��Zedd��Zedd��Zed-dd��Zed.dd��Zedd��Zed d!��Zed"d#��Zed$d%��Zed&d'��Zed(d)��Zed/d+d,��ZdS)0�	FTS5Modelan
    Requires SQLite >= 3.9.0.

    Table options:

    content: table name of external content, or empty string for "contentless"
    content_rowid: column name of external content primary key
    prefix: integer(s). Ex: '2' or '2 3 4'
    tokenize: porter, unicode61, ascii. Ex: 'porter unicode61'

    The unicode tokenizer supports the following parameters:

    * remove_diacritics (1 or 0, default is 1)
    * tokenchars (string of characters, e.g. '-_'
    * separators (string of characters)

    Parameters are passed as alternating parameter name and value, so:

    {'tokenize': "unicode61 remove_diacritics 0 tokenchars '-_'"}

    Content-less tables:

    If you don't need the full-text content in it's original form, you can
    specify a content-less table. Searches and auxiliary functions will work
    as usual, but the only values returned when SELECT-ing can be rowid. Also
    content-less tables do not support UPDATE or DELETE.

    External content tables:

    You can set up triggers to sync these, e.g.

    -- Create a table. And an external content fts5 table to index it.
    CREATE TABLE tbl(a INTEGER PRIMARY KEY, b);
    CREATE VIRTUAL TABLE ft USING fts5(b, content='tbl', content_rowid='a');

    -- Triggers to keep the FTS index up to date.
    CREATE TRIGGER tbl_ai AFTER INSERT ON tbl BEGIN
      INSERT INTO ft(rowid, b) VALUES (new.a, new.b);
    END;
    CREATE TRIGGER tbl_ad AFTER DELETE ON tbl BEGIN
      INSERT INTO ft(fts_idx, rowid, b) VALUES('delete', old.a, old.b);
    END;
    CREATE TRIGGER tbl_au AFTER UPDATE ON tbl BEGIN
      INSERT INTO ft(fts_idx, rowid, b) VALUES('delete', old.a, old.b);
      INSERT INTO ft(rowid, b) VALUES (new.a, new.b);
    END;

    Built-in auxiliary functions:

    * bm25(tbl[, weight_0, ... weight_n])
    * highlight(tbl, col_idx, prefix, suffix)
    * snippet(tbl, col_idx, prefix, suffix, ?, max_tokens)
    c@seZdZdZdS)zFTS5Model.Meta�fts5N�rrrrirrrrrk�srkzQBesides the implicit `rowid` column, all columns must be instances of SearchFieldz3Secondary indexes are not supported for FTS5 modelsz4FTS5 models must use the default `rowid` primary key)�
field_type�index�pkcCsd|jjjdkrt|jd��|jj��D] }t|tt	f�s(t|jd��q(|jj
r`t|jd��dS)Nrr�r�r�)r`rzrbr{�_error_messagesZfields�valuesr;rUrZindexes)rlr�rrrr}�szFTS5Model.validate_modelc	Cs�tjdd�tkrdSt�d�}z\z|�d�WnHzt�d�t�d�WnYYW�dSX|jj	�d�YnXW5|��XdS)NrFz:memory:z0CREATE VIRTUAL TABLE fts5test USING fts5 (data);Tr�)
r�sqlite_version_info�FTS5_MIN_VERSIONZconnect�close�execute�enable_load_extension�load_extensionr`ro)rlZtmp_dbrrr�fts5_installed�s


zFTS5Model.fts5_installedcCs@t�|�}|D],}|�d�r(|�d�r(qt|�t@rdSqdS)z�
        Simple helper function to indicate whether a search query is a
        valid FTS5 query. Note: this simply looks at the characters being
        used, and is not guaranteed to catch all problematic queries.
        r�FT)�	_quote_re�findallr4�endswithrL�_invalid_ascii)�query�tokens�tokenrrr�validate_query�s
zFTS5Model.validate_queryr�c	Cs�g}d}t�|�}|D]\}|�d�r:|�d�r:|�|�qt|�}|t@}|rhd}|D]}|�||�}qV|�|�q|r�d�|�S|S)z2
        Clean a query of invalid tokens.
        Fr�Tr�)	r�r�r4r�rDrLr�rK�join)	r�rKrFZany_invalidr�r�Z	token_setZinvalid_for_token�crrr�clean_querys"


zFTS5Model.clean_querycCst|��|�Sr�r�r�rrrr�$szFTS5Model.matchcGs|r|j|�Std�SdS)Nr�)r�r#)rl�argsrrrr�+s
zFTS5Model.rankcGstj|��f|��Sr))r8r�r�r�rrrr�2szFTS5Model.bm25NFr�cCs|�t�|�||||�Sr�)r�r�r�r�rrrr�6s�zFTS5Model.searchc
Cs�|std�}nbt|t�r\g}|jjD] }|�|�||�|jd���q$tj	|�
�f|��}ntj	|�
�f|��}d}	|}
|r�||�|�f}	|r�|s�t|�}
|j|	��
|�t�|����|
�S)r�r�r�r)r#r;r>r`r�rDrvrbr8r�r�r�r�r�r�r�r�r�)rlr�r�r�r�r�r�r�r�r�r�rrrr�As.

����zFTS5Model.search_bm25c
Ksx|��}|g}|g}|��D] \}}|�t|��|�|�qt|�}ttd�|��t|�td�t|��}	|jj�	|	�S)NzINSERT INTOZVALUES)
r��itemsrDrr�Clauser#r`ror�)
rlr�Zextra_paramsr��columnsr��keyr/Zinner_clause�clauserrrr�\s�zFTS5Model._fts_cmdcCs,d|krdksntd��|jd|d�S)Nr�zlevel must be between 0 and 16r��r�)r-r�)rl�levelrrrr�nszFTS5Model.automergecCs|jd|d�S)Nr�r�r�)rlZnpagesrrrr�tszFTS5Model.mergecCs|jd|d�S)N�pgszr�r�)rlr�rrr�set_pgszxszFTS5Model.set_pgszcCs|jd|d�S)Nr�r�r�)rlZrank_expressionrrr�set_rank|szFTS5Model.set_rankcCs
|�d�S)Nz
delete-allr�r|rrr�
delete_all�szFTS5Model.delete_all�rowcs��dkrtd��d�}t�|�s�G���fdd�d�}t�t�t�t�|d�}�dkrbt�|d<d�j}t�|t|tf|��t	�|�S)	N)r��colz)table_type must be either "row" or "col".z_vocab_model_%scs8eZdZ�jjZ�p�jjdZe����e	���Z
dS)z"FTS5Model.VocabModel.<locals>.MetaZ_vN)rrrr`ror~r8Z	fts5vocabr�r#rir�rl�
table_name�
table_typerrrk�s�rk)r��docZcntrrkr�z%sVocab)
r-�hasattr�	BareField�IntegerFieldrr�setattr�typerh�getattr)rlr�r��attrrkZattrs�
class_namerr�r�
VocabModel�s 
�

zFTS5Model.VocabModel)NFr�F)NFr�F)r�N)rrrrrrrkr�rqr}r��staticmethodr�r�r�r�r�r�r�r�r�r�r�r�r�r�r�rrrrr��sX7�






�
�





r�cs��dkr4�jj��D]}|j�kr|�q4qtd���jj�G���fdd�dt�}G��fdd�d�}d�j}t||fd|i�S)z3Model factory for the transitive closure extension.Nz,Unable to find self-referential foreign key.cs|eZdZe�Ze�Ze�Ze�Ze�Ze	�Z
Gdd�d�Zed��fdd�	�Z
ed��fdd�	�Zed
���fd	d
�	�ZdS)z&ClosureTable.<locals>.BaseClosureTablec@seZdZdZdS)z+ClosureTable.<locals>.BaseClosureTable.MetaZtransitive_closureNr�rrrrrk�srkNFcsb���|j�d��j|�|jkd��|j|k�}|dk	rJ|�|j|k�}n|s^|�|jdk�}|S�N�depth)Zonr)r�r�r�r��idr��root�rl�noder��include_noder��rarzrr�descendants�s
���z2ClosureTable.<locals>.BaseClosureTable.descendantscs^���|j�d��j|�|jkd��|j|k�}|rF|�|j|k�}n|sZ|�|jdk�}|Sr�)r�r�r�r�rr�rrrrr�	ancestors�s
���z0ClosureTable.<locals>.BaseClosureTable.ancestorscs6|j��j�}�����|k�}|s2|��|k�}|Sr))�_datarvrbr�r�)rlrrZfk_valuer���foreign_keyrarzrr�siblings�s
z/ClosureTable.<locals>.BaseClosureTable.siblings)NF)NF)F)rrrrer�r�idcolumn�parentcolumnrrf�	tablenamerkrqrrrrr	rr�BaseClosureTable�srcs0eZdZ�jjZ�jj�jjj�jd�ZdZdS)zClosureTable.<locals>.Meta)rrr
FN)	rrrr`ror~rzrVrjr)r
rarrrk�s�rkz	%sClosure)	r`Zrelr�Z	rel_modelr-rzrhrr�)rar
Z	field_objrrkrbrr	r�ClosureTable�s
+
rcs4eZdZdZd
�fdd�	Zdd�Zddd	�Z�ZS)�SqliteExtQueryCompilerzQ
    Subclass of QueryCompiler that can be used to construct virtual tables.
    FNc
s|tt|�j||d�}t|t�rpd}|jj}t|t�rX|j	dd�t
d�|g}t|�}qt|j	�dt
d|��nd}|r�|d7}t
|�|j	d<|�
|||�}|�rX|j	d	}	t|���D]�\}
}t|t�r�|�|d
k�}n\t�|�r�t|t�r�|��}n>t|ttf��r"t
dd�tt|���}nt|t��s6t
|�}tt
|
�|�}d
|_|	j	�|�q�t|jdd��rx|j	�t
d��|S)N)�safezCREATE VIRTUAL TABLEr@ZUSINGzUSING %szCREATE TABLEz IF NOT EXISTSr���r�z'%s'r��=Z
without_rowidz
WITHOUT ROWID)r!r�
_create_table�
issubclassrhr`rir;rZnodesr#r�rJrn�sortedr�ZFieldr��inspectZisclass�Modelr<r=r��map�str�gluerDr�)
r$rarrmr�Z	statement�	extension�partsZ
table_optionsZcolumns_constraints�k�vZoptionr%rrr�sB
�





z$SqliteExtQueryCompiler._create_tablecCs>t|jdd�}|r |jf|�}ni}|r:|�|jf|��|S)Nrj)r�r`rn�update)r$rar�Z
extra_optionsZ
model_optionsrmrrrrn sz$SqliteExtQueryCompiler.clean_optionscCs|�|�|||��Sr))Z
parse_noder)r$rarrmrrrrp*sz#SqliteExtQueryCompiler.create_table)FN)FN)rrrrrrnrpr'rrr%rr�s6
rF)r]cCstd|dd�S)Nr�ru)r)r�rNrrr�
disqualify.sr"cs�eZdZdZeZd3�fdd�	Zedd��Zdd�Z	d	d
�Z
dd�Zd
d�Zdd�Z
d4dd�Zd5dd�Zd6dd�Zd7dd�Zd8dd�Zd9dd�Zdd �Zd!d"�Zd#d$�Zd%d&�Zd'd(�Zd)d*�Zd:d,d-�Zd;�fd.d/�	Zd<d1d2�Z�ZS)=�SqliteExtDatabasez�
    Database class which provides additional Sqlite-specific functionality:

    * Register custom aggregates, collations and functions
    * Specify a row factory
    * Advanced transactions (specify isolation level)
    Tcs
tt|�j|f|�|�i|_i|_i|_tg�|_d|_t	r�|r�d|_
|�t	jdd�|�t	j
dd�|�t	jdd�|�t	jdd�|�t	jdd�|�t	jd	d�|�t	jd
d�nLd|_
|�tdd�|�tdd�|�tdd�|�tdd�|�td	d�dS)
NTZ	date_partr@Z
date_truncZregexpr�rr�r�Z
murmurhashrAF)r!r#rY�_aggregates�_collations�
_functionsrL�_extensions�_row_factory�_c_ext�_using_c_extensions�register_functionZpeewee_date_partZpeewee_date_truncZ
peewee_regexpZpeewee_rankZ
peewee_luceneZpeewee_bm25Zpeewee_murmurhashr
rrr�r�)r$roZc_extensionsr�r[r%rrrY?s*
zSqliteExtDatabase.__init__cCs|jSr))r*rNrrr�using_c_extensionsWsz$SqliteExtDatabase.using_c_extensionscCsJ|�|�|�|�|�|�|�|�|jr6|j|_|jrF|�|�dSr))Z_set_pragmas�_load_aggregates�_load_collations�_load_functionsr(�row_factoryr'�_load_extensions)r$�connrrr�_add_conn_hooks[s



z!SqliteExtDatabase._add_conn_hookscCs*|j��D]\}\}}|�|||�q
dSr))r$r�Zcreate_aggregate)r$r2rb�klass�
num_paramsrrrr-esz"SqliteExtDatabase._load_aggregatescCs$|j��D]\}}|�||�q
dSr))r%r�Zcreate_collation)r$r2rbr8rrrr.isz"SqliteExtDatabase._load_collationscCs*|j��D]\}\}}|�|||�q
dSr))r&r�Zcreate_function)r$r2rbr8r5rrrr/msz!SqliteExtDatabase._load_functionscCs$|�d�|jD]}|�|�qdS�NT)r�r'r�)r$r2rrrrr1qs

z"SqliteExtDatabase._load_extensionsNrcCs2||f|j|p|j��<|��s.|�|���dSr))r$r�lower�	is_closedr-�get_conn)r$r4rbr5rrr�register_aggregatevsz$SqliteExtDatabase.register_aggregatecs���fdd�}|S)Ncs��|���|Sr))r:)r4�rbr5r$rr�	decorator|sz.SqliteExtDatabase.aggregate.<locals>.decoratorr�r$rbr5r<rr;r�	aggregate{szSqliteExtDatabase.aggregatecs@�p|j��fdd�}||_||j�<|��s<|�|���dS)Ncs|td��f}t|�S)Nz
collate %s)r#r�)r�Zexpressions�rbrr�
_collation�sz8SqliteExtDatabase.register_collation.<locals>._collation)r�	collationr%r8r.r9)r$r8rbr@rr?r�register_collation�s

z$SqliteExtDatabase.register_collationcs��fdd�}|S)Ncs��|��|Sr))rB�r8�rbr$rrr<�sz.SqliteExtDatabase.collation.<locals>.decoratorr)r$rbr<rrDrrA�szSqliteExtDatabase.collationcCs.||f|j|p|j<|��s*|�|���dSr))r&rr8r/r9)r$r8rbr5rrrr+�sz#SqliteExtDatabase.register_functioncs���fdd�}|S)Ncs��|���|Sr))r+rCr;rrr<�sz)SqliteExtDatabase.func.<locals>.decoratorrr=rr;r�func�szSqliteExtDatabase.funccCs4|j�|�|��s0|��}|�d�|�|�dSr6)r'�addr8r9r�r�)r$rr2rrrr��s

z SqliteExtDatabase.load_extensioncCs|j|=dSr))r$�r$rbrrr�unregister_aggregate�sz&SqliteExtDatabase.unregister_aggregatecCs|j|=dSr))r%rGrrr�unregister_collation�sz&SqliteExtDatabase.unregister_collationcCs|j|=dSr))r&rGrrr�unregister_function�sz%SqliteExtDatabase.unregister_functioncCs|j�|�dSr))r'rQ)r$rrrr�unload_extension�sz"SqliteExtDatabase.unload_extensioncCs
||_dSr))r()r$r8rrrr0�szSqliteExtDatabase.row_factoryFcCs"|���|||�\}}|�||�Sr))Zcompilerrpr)r$rarrmZsqlZparamsrrrrp�szSqliteExtDatabase.create_tablecs"t|t�rdStt|��|||�Sr))rrxr!r#�create_index)r$raZ
field_name�uniquer%rrrL�s

�zSqliteExtDatabase.create_index�deferredcCs|��dkst�t||�S)N)rNZ	immediateZ	exclusive)r7�AssertionError�granular_transaction)r$�	lock_typerrrrP�sz&SqliteExtDatabase.granular_transaction)T)Nr)Nr)N)N)Nr)Nr)FN)F)rN)rrrrrZcompiler_classrY�propertyr,r3r-r.r/r1r:r>rBrAr+rEr�rHrIrJrKr0rprLrPr'rrr%rr#5s2









r#c@seZdZddd�Zdd�ZdS)rPrNcCs||_|j��|_||_dSr))�dbr9r2rQ)r$rSrQrrrrY�szgranular_transaction.__init__cCs|j�|j�dSr))rSZbeginrQrNrrr�_begin�szgranular_transaction._beginN)rN)rrrrYrTrrrrrP�s
rPr��MATCHcCst|tj|�Sr))rrrU)Zlhs�rhsrrrr��scs"t��}�fdd�td|d�D�S)Nc	s(g|] }t�d�||d��d�qS)z@Irr)�struct�unpack)rMrG��bufrrrO�sz%_parse_match_info.<locals>.<listcomp>rr)rBrC)rZ�bufsizerrYr�_parse_match_info�sr\cGs�t|�}d}|dd�\}}|s,dg|}n$dg|}t|�D]\}}|||<q>t|�D]l}d||d}	t|�D]N}
||
}|s�qt|	|
d}|||d�\}}
|dkrt||t|�|
7}qtqX|S)N�r@rArr)r\�	enumeraterC�float)�raw_match_infor�r�r�r�r�rG�weightZ
phrase_numZphrase_info_idxZcol_numZcol_idxZx1Zx2rrrr��s&

r�cGs�t|�}d}d}d}td�\}}}}	||}
||}||}|	|}
|
|}|s\dg|}n(dg|}t|�D]\}}||||<qnt|
�D]�}t|�D]�}||}|dkr�q�t||	|�}t||
|�}|dkr�d}nd||||}|d||d}t||�}t||d�}tt�||d	|d	�d�}|||}|dk�r\d}n||d|}||||7}q�q�|S)
z�
    Usage:

        # Format string *must* be pcnalx
        # Second parameter to bm25 specifies the index of the column, on
        # the table being queries.
        bm25(matchinfo(document_tbl, 'pcnalx'), 1) AS rank
    g333333�?g�?r]rrArrr@g�?)r\rCr^r_�max�math�log)r`r�r��K�Br�ZP_OZC_OZN_OZA_OZ
term_countZ	col_countZ
total_docsZL_OZX_Or�rGra�jZ
avg_lengthZ
doc_length�D�xZterm_frequencyZdocs_with_termZidfZdenomrVrrrr��sT	

���
r�)N)QrZglobrrc�os�rerW�sysZ
simplejsonr*�ImportErrorZvtfuncrZpeeweerrrrrr	r
rrr
rrZ	playhouserr)�version_inforrwr�r�r�ryr�rrZPrimaryKeyFieldr Z	TextFieldr(r�rU�objectr^rcr�reZ	CharFieldrfZ
FloatFieldrgrrhrrrxZ	_alphabetrLr��upperr�rCr��compiler�r�rr�extendr"ZSqliteDatabaser#rPrUZregister_opsr�r\r�r�rrrr�<module>s�!
R���
�

CH



�