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Function deconstruct has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def deconstruct(self):
        name, path, args, kwargs = super().deconstruct()
        del kwargs['to_fields']
        del kwargs['from_fields']
        # Handle the simpler arguments
Severity: Minor
Found in django/db/models/fields/related.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function apply_converters has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def apply_converters(self, rows, converters):
        connection = self.connection
        converters = list(converters.items())
        for row in map(list, rows):
            for pos, (convs, expression) in converters:
Severity: Minor
Found in django/db/models/sql/compiler.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function demote_joins has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def demote_joins(self, aliases):
        """
        Change join type from LOUTER to INNER for all joins in aliases.

        Similarly to promote_joins(), this method must ensure no join chains
Severity: Minor
Found in django/db/models/sql/query.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _execute_create_test_db has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def _execute_create_test_db(self, cursor, parameters, keepdb=False):
        try:
            if keepdb and self._database_exists(cursor, parameters['dbname']):
                # If the database should be kept and it already exists, don't
                # try to create a new one.
Severity: Minor
Found in django/db/backends/postgresql/creation.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function adapt_datetimefield_value has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def adapt_datetimefield_value(self, value):
        if value is None:
            return None

        # Expression values are adapted by the database.
Severity: Minor
Found in django/db/backends/sqlite3/operations.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _sqlite_date_trunc has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

def _sqlite_date_trunc(lookup_type, dt):
    dt = _sqlite_datetime_parse(dt)
    if dt is None:
        return None
    if lookup_type == 'year':
Severity: Minor
Found in django/db/backends/sqlite3/base.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function remove_field has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def remove_field(self, model, field):
        """
        Remove a field from a model. Usually involves deleting a column,
        but for M2Ms may involve deleting a table.
        """
Severity: Minor
Found in django/db/backends/sqlite3/schema.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _get_index_tablespace_sql has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def _get_index_tablespace_sql(self, model, fields, db_tablespace=None):
        if db_tablespace is None:
            if len(fields) == 1 and fields[0].db_tablespace:
                db_tablespace = fields[0].db_tablespace
            elif model._meta.db_tablespace:
Severity: Minor
Found in django/db/backends/base/schema.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _nodb_connection has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def _nodb_connection(self):
        nodb_connection = super()._nodb_connection
        try:
            nodb_connection.ensure_connection()
        except (Database.DatabaseError, WrappedDatabaseError):
Severity: Minor
Found in django/db/backends/postgresql/base.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function adapt_datetimefield_value has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def adapt_datetimefield_value(self, value):
        if value is None:
            return None

        # Expression values are adapted by the database.
Severity: Minor
Found in django/db/backends/mysql/operations.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function alter_db_table has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def alter_db_table(self, model, old_db_table, new_db_table):
        """Rename the table a model points to."""
        if (old_db_table == new_db_table or
            (self.connection.features.ignores_table_name_case and
                old_db_table.lower() == new_db_table.lower())):
Severity: Minor
Found in django/db/backends/base/schema.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _destroy_test_db has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def _destroy_test_db(self, test_database_name, verbosity=1):
        """
        Destroy a test database, prompting the user for confirmation if the
        database already exists. Return the name of the test database created.
        """
Severity: Minor
Found in django/db/backends/oracle/creation.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function lookup_cast has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def lookup_cast(self, lookup_type, internal_type=None):
        lookup = '%s'

        # Cast text lookups to text to allow things like filter(x__contains=4)
        if lookup_type in ('iexact', 'contains', 'icontains', 'startswith',
Severity: Minor
Found in django/db/backends/postgresql/operations.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _alter_field_type_workaround has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def _alter_field_type_workaround(self, model, old_field, new_field):
        """
        Oracle refuses to change from some type to other type.
        What we need to do instead is:
        - Add a nullable version of the desired field with a temporary name. If
Severity: Minor
Found in django/db/backends/oracle/schema.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function init_connection_state has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def init_connection_state(self):
        cursor = self.create_cursor()
        # Set the territory first. The territory overrides NLS_DATE_FORMAT
        # and NLS_TIMESTAMP_FORMAT to the territory default. When all of
        # these are set in single statement it isn't clear what is supposed
Severity: Minor
Found in django/db/backends/oracle/base.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function get_db_converters has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def get_db_converters(self, expression):
        converters = super().get_db_converters(expression)
        internal_type = expression.output_field.get_internal_type()
        if internal_type == 'DateTimeField':
            converters.append(self.convert_datetimefield_value)
Severity: Minor
Found in django/db/backends/sqlite3/operations.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _setup_environment has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

def _setup_environment(environ):
    # Cygwin requires some special voodoo to set the environment variables
    # properly so that Oracle will see them.
    if platform.system().upper().startswith('CYGWIN'):
        try:
Severity: Minor
Found in django/db/backends/oracle/base.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _add_q has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def _add_q(self, q_object, used_aliases, branch_negated=False,
               current_negated=False, allow_joins=True, split_subq=True,
               simple_col=False):
        """Add a Q-object to the current filter."""
        connector = q_object.connector
Severity: Minor
Found in django/db/models/sql/query.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function get_field_type has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def get_field_type(self, data_type, description):
        field_type = super().get_field_type(data_type, description)
        if description.default and 'nextval' in description.default:
            if field_type == 'IntegerField':
                return 'AutoField'
Severity: Minor
Found in django/db/backends/postgresql/introspection.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _sqlite_datetime_extract has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

def _sqlite_datetime_extract(lookup_type, dt, tzname=None, conn_tzname=None):
    dt = _sqlite_datetime_parse(dt, tzname, conn_tzname)
    if dt is None:
        return None
    if lookup_type == 'week_day':
Severity: Minor
Found in django/db/backends/sqlite3/base.py - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

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