search.py 文件源码

def prepare_search_term(request):
    from antlr4 import IllegalStateException
    from lucenequery.prefixfields import prefixfields
    from lucenequery import dialects

    search_term = request.params.get('searchTerm', '').strip() or '*'
    if search_term == '*':
        return search_term

    # avoid interpreting slashes as regular expressions
    search_term = search_term.replace('/', r'\/')
    # elasticsearch uses : as field delimiter, but we use it as namespace designator
    # if you need to search fields you have to use @type:field
    # if you need to search fields where the field contains ":", you will have to escape it
    # yourself
    if search_term.find("@type") < 0:
        search_term = search_term.replace(':', '\:')
    try:
        query = prefixfields('embedded.', search_term, dialects.elasticsearch)
    except (IllegalStateException):
        msg = "Invalid query: {}".format(search_term)
        raise HTTPBadRequest(explanation=msg)
    else:
        return query.getText()