Source code for m_librarian.search


from sqlobject.sqlbuilder import AND, func
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): return _search(Book, search_type, case_sensitive, values, join_expressions=join_expressions, 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)