File:  [parser3project] / parser3 / src / include / pa_stylesheet_manager.h
Revision 1.16.4.1: download - view: text, annotated - select for diffs - revision graph
Wed Sep 24 14:32:06 2003 UTC (22 years, 9 months ago) by paf
Diff to: branchpoint 1.16: preferred, unified
v() functions of String::Body, String::Languages and String itself
StringBody->String::Body

/** @file
	Parser: Stylesheet manager decl.

	Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)

	global sql driver manager, must be thread-safe
*/

#ifndef PA_STYLESHEET_MANAGER_H
#define PA_STYLESHEET_MANAGER_H

static const char* IDENT_STYLESHEET_MANAGER_H="$Date: 2003/09/24 14:32:06 $";


#include "pa_hash.h"
#include "pa_table.h"
#include "pa_cache_managers.h"
#include "pa_stack.h"
#include "pa_stylesheet_connection.h"

/** XSLT stylesheet driver manager
		maintains 
		stylesheet cache expiring unused stylesheets
*/
class Stylesheet_manager: public Cache_manager {
	friend class Stylesheet_connection;
public:

	Stylesheet_manager();
	override ~Stylesheet_manager();
	/** 
		check for disk update of "{file_spec}" or "{file_spec}.stamp",
		if not updated return cached version[if any] otherwise load/compile/return
	*/
	Stylesheet_connection_ptr get_connection(const String& file_spec);

private: // cache

	Stylesheet_connection* get_connection_from_cache(const String& file_spec);
	void put_connection_to_cache(const String& file_spec, Stylesheet_connection& connection);
private:
	time_t prev_expiration_pass_time;

private: // for stylesheet

	/// caches connection
	void close_connection(const String& file_spec, Stylesheet_connection& connection);

public:
	typedef Stack<Stylesheet_connection*> connection_cache_value_type;
	typedef Hash<const String::Body, connection_cache_value_type*> connection_cache_type;
private:
	connection_cache_type connection_cache;

public: // Cache_manager

	override Value* get_status();
	override void maybe_expire_cache();

};

/// global
extern Stylesheet_manager stylesheet_manager;

#endif

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