--- parser3/src/classes/table.C 2002/03/15 10:08:13 1.145 +++ parser3/src/classes/table.C 2002/08/01 11:41:13 1.155 @@ -3,10 +3,10 @@ Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com) Author: Alexandr Petrosian (http://paf.design.ru) - - $Id: table.C,v 1.145 2002/03/15 10:08:13 paf Exp $ */ +static const char* IDENT_TABLE_C="$Date: 2002/08/01 11:41:13 $"; + #include "classes.h" #include "pa_common.h" #include "pa_request.h" @@ -15,10 +15,6 @@ #include "pa_sql_connection.h" #include "pa_vbool.h" -// defines - -#define TABLE_CLASS_NAME "table" - // class class MTable : public Methoded { @@ -46,7 +42,7 @@ static void _create(Request& r, const St // data is last parameter Temp_lang temp_lang(r, String::UL_PASS_APPENDED); const String& data= - r.process(params->as_junction(params->size()-1, "body must be code")).as_string(); + r.process_to_string(params->as_junction(params->size()-1, "body must be code")); size_t pos_after=0; // parse columns @@ -140,7 +136,7 @@ static void _load(Request& r, const Stri static_cast(r.self)->set_table(table); } -/// @todo "z\nz" "zzz""zz" +/// @todo "x\nx" "xxx""xx" static void _save(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); Value& vfile_name=params->as_no_junction(params->size()-1, @@ -178,7 +174,7 @@ static void _save(Request& r, const Stri else if(mode=="nameless") /*ok, already skipped names output*/; else - throw Exception(0, 0, + throw Exception("parser.runtime", &mode, "unknown mode, must be 'append'"); @@ -188,8 +184,9 @@ static void _save(Request& r, const Stri while(i.has_next()) { Array_iter c(*static_cast(i.next())); while(c.has_next()) { - sdata.append(*c.next_string(), //*static_cast(row->quick_get(column)), - String::UL_TABLE); + if(const String *s=c.next_string()) + sdata.append(*s, + String::UL_TABLE); if(c.has_next()) sdata.APPEND_CONST("\t"); } @@ -203,16 +200,14 @@ static void _save(Request& r, const Stri static void _count(Request& r, const String& method_name, MethodParams *) { Pool& pool=r.pool(); - Value& value=*new(pool) VInt(pool, static_cast(r.self)->table().size()); - value.set_name(method_name); - r.write_no_lang(value); + int result=static_cast(r.self)->table().size(); + r.write_no_lang(*new(pool) VInt(pool, result)); } static void _line(Request& r, const String& method_name, MethodParams *) { Pool& pool=r.pool(); - Value& value=*new(pool) VInt(pool, 1+static_cast(r.self)->table().current()); - value.set_name(method_name); - r.write_no_lang(value); + int result=1+static_cast(r.self)->table().current(); + r.write_no_lang(*new(pool) VInt(pool, result)); } static void _offset(Request& r, const String& method_name, MethodParams *params) { @@ -227,18 +222,15 @@ static void _offset(Request& r, const St else if(whence=="set") absolute=true; else - throw Exception(0, 0, + throw Exception("parser.runtime", &whence, "is invalid whence, valid are 'cur' or 'set'"); } Value& offset_expr=params->as_junction(params->size()-1, "offset must be expression"); - table.offset(absolute, r.process(offset_expr).as_int()); - } else { - Value& value=*new(pool) VInt(pool, table.current()); - value.set_name(method_name); - r.write_no_lang(value); - } + table.offset(absolute, r.process_to_value(offset_expr).as_int()); + } else + r.write_no_lang(*new(pool) VInt(pool, table.current())); } static void _menu(Request& r, const String& method_name, MethodParams *params) { @@ -246,15 +238,14 @@ static void _menu(Request& r, const Stri Value *delim_maybe_code=params->size()>1?¶ms->get(1):0; - VTable& vtable=*static_cast(r.self); - Table& table=vtable.table(); + Table& table=static_cast(r.self)->table(); bool need_delim=false; int saved_current=table.current(); int size=table.size(); for(int row=0; rowsize()) // need delim & iteration produced string? @@ -297,8 +288,8 @@ static void _hash(Request& r, const Stri Pool& pool=r.pool(); Table& self_table=static_cast(r.self)->table(); Value& result=*new(pool) VHash(pool); - if(const Array *columns=self_table.columns()) - if(columns->size()>1) { + if(const Array *columns=self_table.columns()) + if(columns->size()>0) { const String& key_field_name=params->as_no_junction(0, "key field name must not be code").as_string(); int key_field=self_table.column_name2index(key_field_name, true); @@ -315,7 +306,7 @@ static void _hash(Request& r, const Stri value_fields+=self_table.column_name2index(value_field_name, true); } } else - throw Exception(0, 0, + throw Exception("parser.runtime", &method_name, "value field(s) must be string or self_table" ); @@ -328,7 +319,6 @@ static void _hash(Request& r, const Stri Row_info row_info={&self_table, key_field, &value_fields, result.get_hash(0)}; self_table.for_each(table_row_to_hash, &row_info); } - result.set_name(method_name); r.write_no_lang(result); } @@ -379,7 +369,7 @@ static void _sort(Request& r, const Stri old_table.set_current(i); // calculate key value seq[i].row=(MethodParams *)old_table.get(i); - Value& value=*r.process(key_maker).as_expr_result(true/*return string as-is*/); + Value& value=*r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/); if(i==0) // determining key values type by first one key_values_are_strings=value.is_string(); @@ -404,20 +394,19 @@ static void _sort(Request& r, const Stri static bool _locate_expression(Request& r, const String& method_name, MethodParams *params) { if(params->size()>1) - throw Exception(0, 0, + throw Exception("parser.runtime", &method_name, "locate by expression has only one parameter - expression"); Value& expression_code=params->as_junction(0, "must be expression"); - VTable& vtable=*static_cast(r.self); - Table& table=vtable.table(); + Table& table=static_cast(r.self)->table(); int saved_current=table.current(); int size=table.size(); for(int row=0; rowsize()>2) - throw Exception(0, 0, + throw Exception("parser.runtime", &method_name, "locate by name and value has only two parameters - name and value"); - VTable& vtable=*static_cast(r.self); - Table& table=vtable.table(); + Table& table=static_cast(r.self)->table(); return table.locate( params->as_string(0, "column name must be string"), params->as_string(1, "value must be string") @@ -438,19 +426,15 @@ static bool _locate_name_value(Request& } static void _locate(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - Value& result=*new(pool) VBool(pool, - params->get(0).get_junction()? + bool result=params->get(0).get_junction()? _locate_expression(r, method_name, params) : - _locate_name_value(r, method_name, params)); - result.set_name(method_name); - r.write_no_lang(result); + _locate_name_value(r, method_name, params); + r.write_no_lang(*new(pool) VBool(pool, result)); } static void _flip(Request& r, const String& method_name, MethodParams *params) { Pool& pool=r.pool(); - VTable& vtable=*static_cast(r.self); - - Table& old_table=*vtable.get_table(); + Table& old_table=static_cast(r.self)->table(); Table& new_table=*new(pool) Table(pool, &method_name, 0/*nameless*/); if(old_table.size()) if(int old_cols=old_table.at(0).size()) @@ -471,14 +455,13 @@ static void _append(Request& r, const St // data Temp_lang temp_lang(r, String::UL_PASS_APPENDED); const String& string= - r.process(params->as_junction(0, "body must be code")).as_string(); + r.process_to_string(params->as_junction(0, "body must be code")); // parse cells Array& row=*new(pool) Array(pool); string.split(row, 0, "\t", 1, String::UL_AS_IS); - VTable& vtable=*static_cast(r.self); - vtable.table()+=&row; + static_cast(r.self)->table()+=&row; } static void _join(Request& r, const String& method_name, MethodParams *params) { @@ -486,14 +469,14 @@ static void _join(Request& r, const Stri Table *maybe_src=params->as_no_junction(0, "table ref must not be code").get_table(); if(!maybe_src) - throw Exception(0, 0, + throw Exception("parser.runtime", &method_name, "source is not a table"); Table& src=*maybe_src; Table& dest=static_cast(r.self)->table(); if(&src == &dest) - throw Exception(0, 0, + throw Exception("parser.runtime", &method_name, "source and destination are same table"); @@ -574,17 +557,17 @@ static void _sql(Request& r, const Strin if(voptions.is_defined()) if(Hash *options=voptions.get_hash(&method_name)) { if(Value *vlimit=(Value *)options->get(*sql_limit_name)) - limit=(ulong)r.process(*vlimit).as_double(); + limit=(ulong)r.process_to_value(*vlimit).as_double(); if(Value *voffset=(Value *)options->get(*sql_offset_name)) - offset=(ulong)r.process(*voffset).as_double(); + offset=(ulong)r.process_to_value(*voffset).as_double(); } else - throw Exception(0, 0, + throw Exception("parser.runtime", &method_name, "options must be hash"); } Temp_lang temp_lang(r, String::UL_SQL); - const String& statement_string=r.process(statement).as_string(); + const String& statement_string=r.process_to_string(statement); const char *statement_cstr= statement_string.cstr(String::UL_UNSPECIFIED, r.connection(&method_name)); Table_sql_event_handlers handlers(pool, method_name, @@ -611,7 +594,7 @@ static void _sql(Request& r, const Strin #endif } catch(const Exception& e) { // query problem // more specific source [were url] - throw Exception(e.type(), e.code(), + throw Exception("sql.execute", &statement_string, "%s", e.comment()); } @@ -641,16 +624,40 @@ static void _columns(Request& r, const S } } - VTable& result=*new(pool) VTable(pool, &result_table); - result.set_name(method_name); - r.write_no_lang(result); + r.write_no_lang(*new(pool) VTable(pool, &result_table)); } -// constructor +static void _select(Request& r, const String& method_name, MethodParams *params) { + Pool& pool=r.pool(); + + Value& vcondition=params->as_junction(0, "condition must be expression"); + + Table& source_table=static_cast(r.self)->table(); + Table& result_table=*new(pool) Table(pool, + source_table.origin_string(), + source_table.columns() + ); + + int saved_current=source_table.current(); + int size=source_table.size(); + for(int row=0; row