rdkit.Dbase.DbModule

Package rdkit :: Package Dbase :: Module DbModule |
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# Source Code for Module rdkit.Dbase.DbModule

     1  # $Id$
     2  #
     3  # Copyright (C) 2003-2006 Rational Discovery LLC
     4  #
     5  #   @@ All Rights Reserved @@
     6  #  This file is part of the RDKit.
     7  #  The contents are covered by the terms of the BSD license
     8  #  which is included in the file license.txt, found at the root
     9  #  of the RDKit source tree.
    10  #
    11  from rdkit import six
    12  from rdkit import RDConfig
    13
    14  if hasattr(RDConfig,"usePgSQL") and RDConfig.usePgSQL:
    15    from pyPgSQL import PgSQL
    16    # as of this writing (March 2004), this results in a speedup in
    17    # getting results back from the wrapper:
    18    PgSQL.fetchReturnsList=1
    19
    20    from pyPgSQL.PgSQL import *
    21    sqlTextTypes = [PG_CHAR,PG_BPCHAR,PG_TEXT,PG_VARCHAR,PG_NAME]
    22    sqlIntTypes = [PG_INT8,PG_INT2,PG_INT4]
    23    sqlFloatTypes = [PG_FLOAT4,PG_FLOAT8]
    24    sqlBinTypes = [PG_OID,PG_BLOB,PG_BYTEA]
    25    getTablesSql = """select tablename from pg_tables where schemaname='public'"""
    26    getTablesAndViewsSql = """SELECT c.relname as "Name"
    27    FROM pg_catalog.pg_class c
    28    LEFT JOIN pg_catalog.pg_user u ON u.usesysid = c.relowner
    29    LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
    30    WHERE c.relkind IN ('r','v','S','')
    31    AND n.nspname NOT IN ('pg_catalog', 'pg_toast')
    32    AND pg_catalog.pg_table_is_visible(c.oid)
    33
    34    """
    35    getDbSql = """ select datname from pg_database where datallowconn """
    36    fileWildcard=None
    37    placeHolder='%s'
    38    binaryTypeName="bytea"
    39    binaryHolder = PgBytea
    40    RDTestDatabase="::RDTests"
    41  elif hasattr(RDConfig,"useSqlLite") and RDConfig.useSqlLite:
    42    try:
    43      import sqlite3 as sqlite
    44      #from sqlite3 import *
    45    except ImportError:
    46      from pysqlite2 import dbapi2 as sqlite
    47      #from pysqlite2 import *
    48    sqlTextTypes = []
    49    sqlIntTypes = []
    50    sqlFloatTypes = []
    51    sqlBinTypes = []
    52    getTablesSql = """select name from SQLite_Master where type='table'"""
    53    getTablesAndViewsSql = """select name from SQLite_Master where type in ('table','view')"""
    54    getDbSql = None
    55    dbFileWildcard='*.sqlt'
    56    placeHolder='?'
    57    binaryTypeName="blob"
    58    binaryHolder = memoryview if six.PY3 else buffer
    59
    60    connect = lambda x,*args:sqlite.connect(x)
    61  else:
    62    raise ImportError("Neither sqlite nor PgSQL support found.")
    63