--- parser3/src/classes/hashfile.C 2001/10/23 12:53:22 1.4 +++ parser3/src/classes/hashfile.C 2003/11/06 10:25:40 1.26 @@ -1,137 +1,118 @@ /** @file Parser: @b hashfile parser class. - Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) - Author: Alexander Petrosyan (http://design.ru/paf) - - $Id: hashfile.C,v 1.4 2001/10/23 12:53:22 parser Exp $ + Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) + Author: Alexandr Petrosian (http://paf.design.ru) */ -#include "pa_config_includes.h" + +static const char* IDENT="$Id: hashfile.C,v 1.26 2003/11/06 10:25:40 paf Exp $"; + #include "classes.h" -#ifdef HAVE_LIBDB #include "pa_request.h" +#include "pa_vmethod_frame.h" #include "pa_vhashfile.h" #include "pa_vhash.h" -// defines - -#define HASH_CLASS_NAME "hashfile" - // class class MHashfile : public Methoded { public: // VStateless_class - Value *create_new_value(Pool& pool) { return new(pool) VHashfile(pool); } + Value *create_new_value() { return new VHashfile; } public: - MHashfile(Pool& pool); + MHashfile(); public: // Methoded bool used_directly() { return true; } }; -// methods - -static void _open(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - VHashfile& self=*static_cast(r.self); - - // file_spec - const String &file_spec=params->as_string(0, "filename must be string"); +// global variable - self.set_connection( - DB_manager->get_connection( - r.absolute(file_spec), - method_name) - ); -} +DECLARE_CLASS_VAR(hashfile, new MHashfile, 0); +// methods -static void _transaction(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - VHashfile& self=*static_cast(r.self); +static void _open(Request& r, MethodParams& params) { + VHashfile& self=GET_SELF(r, VHashfile); - // body code - Value& body_code=params->as_junction(0, "body must be code"); - - // connection - DB_Connection& connection=self.get_connection(&method_name); - - // transaction - Auto_transaction transaction(connection); - - // execute body - try { - r.write_assign_lang(r.process(body_code)); - } catch(...) { // process/commit problem - transaction.mark_to_rollback(); - - /*re*/throw; - } + self.open(r.absolute(params.as_string(0, "filename must be string"))); } -static void _delete(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); - VHashfile& self=*static_cast(r.self); +static void _hash(Request& r, MethodParams& params) { + VHashfile& self=GET_SELF(r, VHashfile); - // key - const String &key=params->as_string(0, "key must be string"); - - // connection - DB_Connection& connection=self.get_connection(&method_name); - - connection._delete(key); + // write out result + VHash& result=*new VHash(*self.get_hash()); + r.write_no_lang(result); } -static void _clear(Request& r, const String& method_name, MethodParams *params) { - Pool& pool=r.pool(); +static void _delete(Request& r, MethodParams& params) { + VHashfile& self=GET_SELF(r, VHashfile); - // file_spec - const String &file_spec=params->as_string(0, "filename must be string"); - - DB_manager->clear_dbfile(r.absolute(file_spec)); + // key + const String &key=params.as_string(0, "key must be string"); + // remove + self.remove(key); +} + +static void _clear(Request& r, MethodParams&) { + VHashfile& self=GET_SELF(r, VHashfile); + self.clear(); +} + +#if LATER +static void _foreach(Request& r, MethodParams& params) { + VHashfile& self=GET_SELF(r, VHashfile); + + const String& key_var_name=params.as_string(0, "key-var name must be string"); + const String& value_var_name=params.as_string(1, "value-var name must be string"); + Value& body_code=params.as_junction(2, "body must be code"); + Value *delim_maybe_code=params.size()>3?¶ms.get(3):0; + + bool need_delim=false; + Value& var_context=*body_code.get_junction()->wcontext; + VString& vkey=*new(pool) VString(pool); + VString& vvalue=*new(pool) VString(pool); + + DB_Cursor cursor(*self.get_table_ptr(&method_name), &method_name); + while(true) { + String *key; + String *data; + if(!cursor.get(pool, key, data, DB_NEXT)) + break; + + if(!key) + continue; // expired + + vkey.set_string(*key); + vvalue.set_string(*data); + var_context.put_element(key_var_name, &vkey); + var_context.put_element(value_var_name, &vvalue); + + Value& processed_body=r.process(body_code); + if(delim_maybe_code) { // delimiter set? + const String *string=processed_body.get_string(); + if(need_delim && string && string->size()) // need delim & iteration produced string? + r.write_pass_lang(r.process(*delim_maybe_code)); + need_delim=true; + } + r.write_pass_lang(processed_body); + } } +#endif // constructor -MHashfile::MHashfile(Pool& apool) : Methoded(apool) { - set_name(*NEW String(pool(), HASH_CLASS_NAME)); - - // ^hashfile::open[filename] +MHashfile::MHashfile(): Methoded("hashfile") { + // ^hashfile::open[db_home;filename] add_native_method("open", Method::CT_DYNAMIC, _open, 1, 1); - // ^transaction{code} - add_native_method("transaction", Method::CT_DYNAMIC, _transaction, 1, 1); - // ^hashfile.delete[key] - add_native_method("delete", Method::CT_DYNAMIC, _delete, 1, 1); - // ^hashfile:clear[filename] - add_native_method("clear", Method::CT_STATIC, _clear, 1, 1); - // ^pack[] - add_native_method("pack", Method::CT_DYNAMIC, _pack, 0, 0); -/* - // ^cache[key](seconds){code} - add_native_method("cache", Method::CT_DYNAMIC, _cache, 3, 3); - // ^cancel[] - add_native_method("cancel", Method::CT_DYNAMIC, _cancel, 0, 0); // ^hash[] add_native_method("hash", Method::CT_DYNAMIC, _hash, 0, 0); - */ -} - -// global variable - -Methoded *hashfile_base_class; - -#endif - -// creator - -Methoded *MHashfile_create(Pool& pool) { - return -#ifdef HAVE_LIBDB - hashfile_base_class=new(pool) MHashfile(pool) -#else - 0 -#endif - ; + // ^hashfile.delete[key] + add_native_method("delete", Method::CT_DYNAMIC, _delete, 1, 1); + // ^hashfile.clear[] + add_native_method("clear", Method::CT_DYNAMIC, _clear, 0, 0); + // ^hashfile.foreach[key;value]{code}[delim] +// add_native_method("foreach", Method::CT_DYNAMIC, _foreach, 2+1, 2+1+1); }