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Annotation of parser3/src/main/pa_charset_manager.C, revision 1.9

1.1       parser      1: /** @file
                      2:        Parser: sql driver manager implementation.
                      3: 
                      4:        Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.6       paf         5:        Author: Alexander Petrosyan <paf@design.ru> (http://paf.design.ru)
1.1       parser      6: 
1.9     ! paf         7:        $Id: pa_charset_manager.C,v 1.8 2001/11/08 14:47:32 paf Exp $
1.1       parser      8: */
                      9: #include "pa_config_includes.h"
                     10: 
                     11: #include "pa_charset_manager.h"
                     12: #include "ltdl.h"
                     13: #include "pa_exception.h"
                     14: #include "pa_common.h"
                     15: #include "pa_threads.h"
1.4       paf        16: #include "pa_vhash.h"
1.5       paf        17: #include "pa_vtable.h"
1.1       parser     18: 
                     19: // globals
                     20: 
                     21: Charset_manager *charset_manager;
                     22: 
                     23: // consts
                     24: 
                     25: 
                     26: // Charset_manager
                     27: 
1.8       paf        28: Charset_manager::Charset_manager(Pool& apool) : Cache_manager(apool),
1.4       paf        29:        cache(apool) {
                     30: }
                     31: 
                     32: 
1.1       parser     33: Charset_connection& Charset_manager::get_connection(const String& request_name, const String& request_file_spec) {
                     34:        Pool& pool=request_name.pool(); // request pool                                                                                    
                     35: 
                     36:        // first trying to get cached
                     37:        Charset_connection *result=get_connection_from_cache(request_file_spec);
                     38:        if(!result) {
                     39:                // then just construct it
                     40: 
                     41:                // make global_name C-string on global pool
                     42:                const char *request_name_cstr=request_name.cstr(String::UL_FILE_SPEC);
                     43:                char *global_name_cstr=(char *)malloc(strlen(request_name_cstr)+1);
                     44:                strcpy(global_name_cstr, request_name_cstr);
                     45:                // make global_name string on global pool
                     46:                String& global_name=*new(this->pool()) String(this->pool(), global_name_cstr);
                     47: 
                     48:                // make global_file_spec C-string on global pool
                     49:                const char *request_file_spec_cstr=request_file_spec.cstr(String::UL_FILE_SPEC);
                     50:                char *global_file_spec_cstr=(char *)malloc(strlen(request_file_spec_cstr)+1);
                     51:                strcpy(global_file_spec_cstr, request_file_spec_cstr);
                     52:                // make global_file_spec string on global pool
                     53:                String& global_file_spec=*new(this->pool()) String(this->pool(), global_file_spec_cstr);
                     54:                
                     55:                // construct result
                     56:                result=new(this->pool()) Charset_connection(this->pool(), global_name, global_file_spec);
                     57:                // cache it
                     58:                put_connection_to_cache(global_file_spec, *result);
                     59:        }
                     60:        // preload file, need to make addEncoding for xml
                     61:        result->up_to_date(pool); 
                     62:        // return it
                     63:        return *result;
                     64: }
                     65: 
                     66: //  cache
                     67: Charset_connection *Charset_manager::get_connection_from_cache(const String& file_spec) { 
                     68:        SYNCHRONIZED;
                     69: 
                     70:        return (Charset_connection *)cache.get(file_spec);
                     71: }
                     72: void Charset_manager::put_connection_to_cache(const String& file_spec, 
                     73:                                                                                                 Charset_connection& connection) { 
                     74:        SYNCHRONIZED;
                     75: 
                     76:        cache.put(file_spec, &connection);
1.4       paf        77: }
                     78: 
1.5       paf        79: static void add_connection_to_status_cache_table(const Hash::Key& key, Hash::Val *value, void *info) {
                     80:        Charset_connection& connection=*static_cast<Charset_connection *>(value);
                     81:        Table& table=*static_cast<Table *>(info);
                     82: 
                     83:        Pool& pool=table.pool();
1.6       paf        84:        Array& row=*new(pool) Array(pool);
1.5       paf        85: 
1.6       paf        86:        // file
1.5       paf        87:        row+=&connection.get_file_spec();
                     88: 
                     89:        table+=&row;
                     90: }
1.4       paf        91: Value& Charset_manager::get_status(Pool& pool, const String *source) {
                     92:        VHash& result=*new(pool) VHash(pool);
1.5       paf        93:        
1.4       paf        94:        // cache
                     95:        {
1.6       paf        96:                Array& columns=*new(pool) Array(pool);
1.5       paf        97:                columns+=new(pool) String(pool, "file");
                     98:                Table& table=*new(pool) Table(pool, 0, &columns, cache.size());
1.4       paf        99: 
1.5       paf       100:                cache.for_each(add_connection_to_status_cache_table, &table);
1.4       paf       101: 
                    102:                result.hash(source).put(*new(pool) String(pool, "cache"), new(pool) VTable(pool, &table));
                    103:        }
1.5       paf       104: 
1.4       paf       105:        return result;
1.1       parser    106: }