from sqlobject.sqlbuilder import AND, OR, func
from .config import get_config
from .db import Author, Book, Extension, Genre, Language
__all__ = [
'mk_search_conditions',
'search_authors', 'search_books', 'search_extensions',
'search_genres', 'search_languages',
]
def _mk_search_conditions_with_operator(table, case_sensitive, comparison_op,
values, expressions):
if expressions is None:
expressions = []
_expressions = []
for column, value in values.items():
if column == 'id':
_expressions.append(table.q.id == value)
break
if case_sensitive:
for column, value in values.items():
if column == 'id':
continue
_expressions.append(
getattr(getattr(table.q, column), comparison_op)(value))
for expr, value in expressions:
_expressions.append(
getattr(expr, comparison_op)(value))
else:
for column, value in values.items():
if column == 'id':
continue
_expressions.append(
getattr(func.lower(
getattr(table.q, column)),
comparison_op)(value.lower()))
for expr, value in expressions:
_expressions.append(
getattr(func.lower(expr), comparison_op)(value.lower()))
return _expressions
_comparison_operators = {
'start': 'startswith',
'substring': 'contains',
'full': '__eq__',
}
[docs]def mk_search_conditions(table, search_type, case_sensitive, values,
expressions=None, join_expressions=None):
if join_expressions is None:
join_expressions = []
return _mk_search_conditions_with_operator(
table, case_sensitive, _comparison_operators[search_type],
values, expressions) + join_expressions
def _search(table, search_type, case_sensitive, values,
expressions=None, join_expressions=None, orderBy=None):
conditions = mk_search_conditions(
table, search_type, case_sensitive, values, expressions=expressions,
join_expressions=join_expressions)
return table.select(AND(*conditions), orderBy=orderBy)
[docs]def search_authors(search_type, case_sensitive, values,
expressions=None, orderBy=None):
return _search(Author, search_type, case_sensitive, values,
expressions=expressions, orderBy=orderBy)
[docs]def search_books(search_type, case_sensitive, values, join_expressions=None,
orderBy=None, use_filters=False):
if use_filters:
config = get_config()
lang_filter = config.getlist('filters', 'lang')
deleted_filter = config.getint('filters', 'deleted')
if lang_filter:
if join_expressions is None:
join_expressions = []
lang_conditions = []
for lang in lang_filter:
lvalues = {'name': lang}
conditions = mk_search_conditions(
Language, search_type, case_sensitive, lvalues)
lang_conditions.append(conditions)
join_expressions.append(Book.j.language)
join_expressions.append(OR(*lang_conditions))
conditions = mk_search_conditions(
Book, search_type, case_sensitive, values,
join_expressions=join_expressions)
if use_filters and not deleted_filter:
conditions.append(Book.q.deleted == False) # noqa: E712
return Book.select(AND(*conditions), orderBy=orderBy)
[docs]def search_extensions(search_type, case_sensitive, values, orderBy=None):
return _search(Extension, search_type, case_sensitive, values,
orderBy=orderBy)
[docs]def search_genres(search_type, case_sensitive, values, orderBy=None):
return _search(Genre, search_type, case_sensitive, values,
orderBy=orderBy)
[docs]def search_languages(search_type, case_sensitive, values, orderBy=None):
return _search(Language, search_type, case_sensitive, values,
orderBy=orderBy)