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Annotation of parser3/src/include/pa_stylesheet_manager.h, revision 1.28

1.1       parser      1: /** @file
                      2:        Parser: Stylesheet manager decl.
                      3: 
1.28    ! moko        4:        Copyright (c) 2001-2020 Art. Lebedev Studio (http://www.artlebedev.com)
1.12      paf         5:        Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.1       parser      6: 
                      7:        global sql driver manager, must be thread-safe
                      8: */
                      9: 
                     10: #ifndef PA_STYLESHEET_MANAGER_H
                     11: #define PA_STYLESHEET_MANAGER_H
1.13      paf        12: 
1.28    ! moko       13: #define IDENT_PA_STYLESHEET_MANAGER_H "$Id: pa_stylesheet_manager.h,v 1.27 2020/12/11 14:16:15 moko Exp $"
1.16      paf        14: 
1.1       parser     15: 
                     16: #include "pa_hash.h"
                     17: #include "pa_table.h"
1.6       paf        18: #include "pa_cache_managers.h"
1.16      paf        19: #include "pa_stack.h"
                     20: #include "pa_stylesheet_connection.h"
1.1       parser     21: 
                     22: /** XSLT stylesheet driver manager
                     23:                maintains 
                     24:                stylesheet cache expiring unused stylesheets
                     25: */
1.16      paf        26: class Stylesheet_manager: public Cache_manager {
1.2       paf        27:        friend class Stylesheet_connection;
1.1       parser     28: public:
                     29: 
1.16      paf        30:        Stylesheet_manager();
                     31:        override ~Stylesheet_manager();
1.1       parser     32:        /** 
                     33:                check for disk update of "{file_spec}" or "{file_spec}.stamp",
                     34:                if not updated return cached version[if any] otherwise load/compile/return
                     35:        */
1.27      moko       36:        Stylesheet_connection* get_connection(String::Body file_spec);
1.1       parser     37: 
                     38: private: // cache
                     39: 
1.19      paf        40:        Stylesheet_connection* get_connection_from_cache(String::Body file_spec);
                     41:        void put_connection_to_cache(String::Body file_spec, Stylesheet_connection& connection);
1.1       parser     42: private:
                     43:        time_t prev_expiration_pass_time;
                     44: 
                     45: private: // for stylesheet
                     46: 
                     47:        /// caches connection
1.19      paf        48:        void close_connection(String::Body file_spec, Stylesheet_connection& connection);
1.1       parser     49: 
1.16      paf        50: public:
                     51:        typedef Stack<Stylesheet_connection*> connection_cache_value_type;
1.23      misha      52:        typedef HashString<connection_cache_value_type*> connection_cache_type;
1.1       parser     53: private:
1.16      paf        54:        connection_cache_type connection_cache;
1.3       paf        55: 
1.6       paf        56: public: // Cache_manager
1.3       paf        57: 
1.16      paf        58:        override Value* get_status();
                     59:        override void maybe_expire_cache();
1.3       paf        60: 
1.1       parser     61: };
                     62: 
                     63: /// global
1.20      paf        64: extern Stylesheet_manager* stylesheet_manager;
1.1       parser     65: 
                     66: #endif