Annotation of parser3/src/classes/table.C, revision 1.244
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.210 paf 4: Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com)
1.144 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.154 paf 6: */
1.221 paf 7:
1.244 ! misha 8: static const char * const IDENT_TABLE_C="$Date: 2008-05-27 19:01:46 $";
1.229 misha 9:
1.240 misha 10: #ifndef NO_STRINGSTREAM
1.229 misha 11: #include <sstream>
12: using namespace std;
1.240 misha 13: #endif
1.1 paf 14:
1.105 parser 15: #include "classes.h"
1.182 paf 16: #include "pa_vmethod_frame.h"
17:
1.16 paf 18: #include "pa_common.h"
1.1 paf 19: #include "pa_request.h"
20: #include "pa_vtable.h"
1.6 paf 21: #include "pa_vint.h"
1.51 paf 22: #include "pa_sql_connection.h"
1.72 paf 23: #include "pa_vbool.h"
1.1 paf 24:
1.66 paf 25: // class
26:
1.182 paf 27: class MTable: public Methoded {
1.66 paf 28: public: // VStateless_class
1.209 paf 29: Value* create_new_value(Pool&, HashStringValue&) { return new VTable(); }
1.66 paf 30:
31: public:
1.182 paf 32: MTable();
1.70 paf 33:
34: public: // Methoded
1.66 paf 35: bool used_directly() { return true; }
36: };
1.1 paf 37:
1.182 paf 38: // global variable
39:
40: DECLARE_CLASS_VAR(table, new MTable, 0);
41:
1.221 paf 42: // externs
43:
44: extern String cycle_data_name;
45:
1.182 paf 46: #define TABLE_REVERSE_NAME "reverse"
47:
48: // globals
49:
1.203 paf 50: String sql_bind_name(SQL_BIND_NAME);
1.214 paf 51: String sql_limit_name(PA_SQL_LIMIT_NAME);
52: String sql_offset_name(PA_SQL_OFFSET_NAME);
1.182 paf 53: String sql_default_name(SQL_DEFAULT_NAME);
54: String sql_distinct_name(SQL_DISTINCT_NAME);
1.227 misha 55: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
1.182 paf 56: String table_reverse_name(TABLE_REVERSE_NAME);
57:
1.1 paf 58: // methods
1.66 paf 59:
1.182 paf 60: static Table::Action_options get_action_options(Request& r, MethodParams& params,
61: const Table& source) {
1.176 paf 62: Table::Action_options result;
1.182 paf 63: if(!params.count())
64: return result;
65:
66: Value& maybe_options=params.last();
67: /* can not do it:
68: want to enable ^table::create[$source;
69: # $.option[]
70: ]
71: but there is ^table.locate[name;value]
1.176 paf 72:
1.212 paf 73: ...if(voptions.is_defined() && !voptions.is_string()))
1.182 paf 74: if(maybe_options.is_string()) { // allow empty options
75: result.defined=true;
1.176 paf 76: return result;
1.182 paf 77: }
78: */
79: HashStringValue* options=maybe_options.get_hash();
1.176 paf 80: if(!options)
81: return result;
82:
83: result.defined=true;
84: bool defined_offset=false;
85:
86: int valid_options=0;
1.182 paf 87: if(Value* voffset=options->get(sql_offset_name)) {
1.176 paf 88: valid_options++;
89: defined_offset=true;
90: if(voffset->is_string()) {
1.182 paf 91: const String& soffset=*voffset->get_string();
1.176 paf 92: if(soffset == "cur")
93: result.offset=source.current();
94: else
1.226 misha 95: throw Exception(PARSER_RUNTIME,
1.176 paf 96: &soffset,
97: "must be 'cur' string or expression");
98: } else
99: result.offset=r.process_to_value(*voffset).as_int();
100: }
1.182 paf 101: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 102: valid_options++;
103: result.limit=r.process_to_value(*vlimit).as_int();
104: }
1.182 paf 105: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
106: valid_options++;
107: result.reverse=r.process_to_value(*vreverse).as_bool();
108: if(result.reverse && !defined_offset)
109: result.offset=source.count()-1;
110: }
111:
112: if(valid_options!=options->count())
1.226 misha 113: throw Exception(PARSER_RUNTIME,
1.182 paf 114: 0,
1.176 paf 115: "called with invalid option");
116:
117: return result;
118: }
1.180 paf 119: static void check_option_param(bool options_defined,
1.182 paf 120: MethodParams& params, size_t next_param_index,
1.176 paf 121: const char *msg) {
1.182 paf 122: if(next_param_index+(options_defined?1:0) != params.count())
1.226 misha 123: throw Exception(PARSER_RUNTIME,
1.182 paf 124: 0,
1.176 paf 125: "%s", msg);
1.157 paf 126: }
127:
1.236 misha 128: struct TableSeparators {
129: char column; const String* scolumn;
130: char encloser; const String* sencloser;
131:
132: TableSeparators():
133: column('\t'), scolumn(new String("\t", false)),
134: encloser(0), sencloser(0)
135: {}
136: int load( HashStringValue& options ) {
137: int result=0;
138: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
139: scolumn=&vseparator->as_string();
140: if(scolumn->length()!=1)
141: throw Exception(PARSER_RUNTIME,
142: scolumn,
143: "separator must be one character long");
144: column=scolumn->first_char();
145: result++;
146: }
147: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
148: sencloser=&vencloser->as_string();
149: if(sencloser->length()!=1)
150: throw Exception(PARSER_RUNTIME,
151: sencloser,
152: "encloser must be one character long");
153: encloser=sencloser->first_char();
154: result++;
155: }
156: return result;
157: }
158: };
159:
1.182 paf 160: static void _create(Request& r, MethodParams& params) {
1.157 paf 161: // clone/copy part?
1.182 paf 162: if(Table *source=params[0].get_table()) {
163: Table::Action_options o=get_action_options(r, params, *source);
164: check_option_param(o.defined, params, 1,
1.176 paf 165: "too many parameters");
1.182 paf 166: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 167: return;
168: }
1.142 paf 169:
1.236 misha 170: size_t data_param_index=0;
171: bool nameless=false;
172:
173: if(params.count()>1) {
174: if(params[0].is_string()){ // can be nameless only
175: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
176: if(snameless!="nameless")
177: throw Exception(PARSER_RUNTIME,
178: &snameless,
179: "table::create called with more then 1 param, first param may be only 'nameless'");
180: nameless=true;
181: data_param_index++;
182: }
183: }
184:
185: HashStringValue *options=0;
186: TableSeparators separators;
187:
188: size_t options_param_index=data_param_index+1;
189: if(
190: options_param_index<params.count()
191: && (options=params.as_no_junction(options_param_index, "additional params must be hash").get_hash())
192: ) {
193: // cloning, so that we could change
194: options=new HashStringValue(*options);
195: separators.load(*options);
196: if(separators.encloser){
197: throw Exception(PARSER_RUNTIME,
198: 0,
199: "encloser not supported for table::create yet");
200: }
201: }
202:
203: // data
1.182 paf 204: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
205: const String& data=
1.236 misha 206: r.process_to_string(params.as_junction(data_param_index, "body must be code"));
1.44 paf 207:
208: // parse columns
1.182 paf 209: size_t raw_pos_after=0;
210: Table::columns_type columns;
1.236 misha 211:
212: if(nameless){
1.182 paf 213: columns=Table::columns_type(0); // nameless
1.21 paf 214: } else {
1.182 paf 215: columns=Table::columns_type(new ArrayString);
1.44 paf 216:
1.182 paf 217: ArrayString head;
218: data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);
219: if(head.count()) {
220: size_t col_pos_after=0;
1.236 misha 221: head[0]->split(*columns, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 222: }
1.44 paf 223: }
224:
1.182 paf 225: Table& table=*new Table(columns);
1.44 paf 226: // parse cells
1.182 paf 227:
228: ArrayString rows;
229: data.split(rows, raw_pos_after, "\n", String::L_AS_IS);
230: Array_iterator<const String*> i(rows);
1.98 parser 231: while(i.has_next()) {
1.182 paf 232: Table::element_type row(new ArrayString);
233: const String& string=*i.next();
1.118 parser 234: // remove comment lines
1.182 paf 235: if(!string.length())
1.44 paf 236: continue;
237:
1.182 paf 238: size_t col_pos_after=0;
1.236 misha 239: string.split(*row, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 240: table+=row;
1.17 paf 241: }
1.1 paf 242:
1.44 paf 243: // replace any previous table value
1.182 paf 244: GET_SELF(r, VTable).set_table(table);
1.44 paf 245: }
246:
1.187 paf 247: struct lsplit_result {
248: char* piece;
249: char delim;
250:
251: operator bool() { return piece!=0; }
252: };
253:
254: inline lsplit_result lsplit(char* string, char delim1, char delim2) {
255: lsplit_result result;
256: if(string) {
257: char delims[]={delim1, delim2, 0};
258: if(char* v=strpbrk(string, delims)) {
259: result.delim=*v;
260: *v=0;
261: result.piece=v+1;
262: return result;
263: }
264: }
265: result.piece=0;
266: result.delim=0;
267: return result;
268: }
269:
270: inline lsplit_result lsplit(char* *string_ref, char delim1, char delim2) {
271: lsplit_result result;
272: result.piece=*string_ref;
273: lsplit_result next=lsplit(*string_ref, delim1, delim2);
274: result.delim=next.delim;
275: *string_ref=next.piece;
276: return result;
277: }
278:
279: static lsplit_result lsplit(char** string_ref, char delim1, char delim2, char encloser) {
280: lsplit_result result;
281:
282: if(char* string=*string_ref) {
283: if(encloser && *string==encloser) {
284: string++;
285:
286: char *read;
287: char *write;
288: write=read=string;
289: char c;
1.193 paf 290: while((c=*read++)) {
1.187 paf 291: if(c==encloser) {
292: char n=*read;
293: if(n==encloser) // double-encloser stands for encloser
294: read++;
295: else if(n==delim1 || n==delim2) {
296: result.delim=n;
297: read++;
298: break;
299: }
300: }
301:
302: *write++=c;
303: }
304: *write=0; // terminate
305: *string_ref=c? read: 0;
306: result.piece=string;
307: return result;
308: } else
309: return lsplit(string_ref, delim1, delim2);
310: }
311: result.piece=0;
312: return result;
313: }
314:
315: static void skip_empty_and_comment_lines( char** data_ref ) {
316: if(char *data=*data_ref) {
317: while( char c=*data ) {
318: if( c== '\n' || c == '#' ) {
319: /*nowhere=*/getrow(&data); // remove empty&comment lines
1.199 paf 320: if(!(*data_ref=data))
321: break;
1.187 paf 322: continue;
323: }
324: break;
325: }
326: }
327: }
328:
1.182 paf 329: static void _load(Request& r, MethodParams& params) {
1.232 misha 330: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 331: int filename_param_index=0;
332: bool nameless=first_param=="nameless";
333: if(nameless)
334: filename_param_index++;
1.182 paf 335: size_t options_param_index=filename_param_index+1;
1.186 paf 336:
337: HashStringValue *options=0;
1.187 paf 338: TableSeparators separators;
1.186 paf 339: if(options_param_index<params.count()
340: && (options=params.as_no_junction(options_param_index, "additional params must be hash").get_hash())) {
341: // cloning, so that we could change [to simplify checks on params inside file_read_text
342: options=new HashStringValue(*options);
1.187 paf 343: separators.load(*options);
1.186 paf 344: }
345:
1.44 paf 346: // loading text
1.182 paf 347: char *data=file_read_text(r.charsets,
1.232 misha 348: r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)),
1.168 paf 349: true,
1.186 paf 350: options
1.168 paf 351: );
1.44 paf 352:
1.1 paf 353: // parse columns
1.182 paf 354: Table::columns_type columns;
1.168 paf 355: if(nameless) {
1.182 paf 356: columns=Table::columns_type(0); // nameless
1.1 paf 357: } else {
1.182 paf 358: columns=Table::columns_type(new ArrayString);
1.1 paf 359:
1.187 paf 360: skip_empty_and_comment_lines(&data);
361: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
362: *columns+=new String(sr.piece, 0, true);
363: if(sr.delim=='\n')
364: break;
1.139 paf 365: }
1.1 paf 366: }
1.187 paf 367:
368: Table& table=*new Table(columns);
1.219 paf 369: int columns_count=columns? columns->count(): 0;
1.1 paf 370:
371: // parse cells
1.218 paf 372: Table::element_type row(new ArrayString(columns_count));
1.187 paf 373: skip_empty_and_comment_lines(&data);
374: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.201 paf 375: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
376: break;
1.187 paf 377: *row+=new String(sr.piece, 0, true);
378: if(sr.delim=='\n') {
379: table+=row;
1.218 paf 380: row=new ArrayString(columns_count);
1.187 paf 381: skip_empty_and_comment_lines(&data);
1.1 paf 382: }
1.187 paf 383: }
384: // last line [if without \n]
385: if(row->count())
1.1 paf 386: table+=row;
1.187 paf 387:
1.1 paf 388: // replace any previous table value
1.182 paf 389: GET_SELF(r, VTable).set_table(table);
1.1 paf 390: }
1.2 paf 391:
1.241 misha 392: #ifdef NO_STRINGSTREAM
393:
1.224 misha 394: void maybe_enclose( String& to, const String& from, char encloser, const String* sencloser ) {
1.188 paf 395: if(encloser) {
396: to<<*sencloser;
397: // while we have 'encloser'...
1.189 paf 398: size_t pos_after=0;
1.220 paf 399: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
400: pos_before++; // including first encloser (and skipping it for next pos)
401: to<<from.mid(pos_after, pos_before);
402: to<<*sencloser; // doubling encloser
1.188 paf 403: }
404: // last piece
405: size_t from_length=from.length();
406: if(pos_after<from_length)
407: to<<from.mid(pos_after, from_length);
408:
409: to<<*sencloser;
410: } else
1.202 paf 411: to<<from;
1.188 paf 412: }
413:
1.241 misha 414: #else
415:
1.224 misha 416: void maybe_enclose( ostringstream& to, const String& from, char encloser ) {
417: if(encloser) {
418: to<<encloser;
419: // while we have 'encloser'...
420: size_t pos_after=0;
421: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
422: pos_before++; // including first encloser (and skipping it for next pos)
423: to<<from.mid(pos_after, pos_before).cstr();
424: to<<encloser; // doubling encloser
425: }
426: // last piece
427: size_t from_length=from.length();
428: if(pos_after<from_length)
429: to<<from.mid(pos_after, from_length).cstr();
430:
431: to<<encloser;
432: } else
433: to<<from.cstr();
434: }
435:
1.241 misha 436: #endif
437:
438: static void _save(Request& r, MethodParams& params) {
1.237 misha 439: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 440: size_t param_index=1;
441:
442: bool do_append=false;
443: bool output_column_names=true;
444:
445: // mode?
446: if(first_arg=="append")
447: do_append=true;
448: else if(first_arg=="nameless")
449: output_column_names=false;
450: else
451: --param_index;
452:
1.232 misha 453: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.188 paf 454:
455: TableSeparators separators;
456: if(param_index<params.count()) {
1.222 paf 457: Value& voptions=params.as_no_junction(param_index++, "additional params must be hash");
458: if( voptions.is_defined() && !voptions.is_string() ) {
459: if(HashStringValue* options=voptions.get_hash()) {
1.223 paf 460: int valid_options=separators.load(*options);
461: if(valid_options!=options->count())
1.226 misha 462: throw Exception(PARSER_RUNTIME,
1.223 paf 463: 0,
464: "invalid option passed");
465: } else {
1.226 misha 466: throw Exception(PARSER_RUNTIME,
1.188 paf 467: 0,
1.223 paf 468: "additional params must be hash (did you spell mode parameter correctly?)");
469: }
1.222 paf 470: }
1.188 paf 471: }
472: if(param_index<params.count())
1.226 misha 473: throw Exception(PARSER_RUNTIME,
1.188 paf 474: 0,
475: "bad mode (must be nameless or append)");
1.22 paf 476:
1.182 paf 477: Table& table=GET_SELF(r, VTable).table();
1.31 paf 478:
1.241 misha 479: #ifdef NO_STRINGSTREAM
480:
1.182 paf 481: String sdata;
1.188 paf 482: if(output_column_names) {
1.31 paf 483: if(table.columns()) { // named table
1.182 paf 484: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.188 paf 485: maybe_enclose( sdata, *i.next(), separators.encloser, separators.sencloser );
1.98 parser 486: if(i.has_next())
1.206 paf 487: sdata<<*separators.scolumn;
1.31 paf 488: }
1.188 paf 489: } else { // nameless table [we were asked to output column names]
1.182 paf 490: if(int lsize=table.count()?table[0]->count():0)
1.31 paf 491: for(int column=0; column<lsize; column++) {
1.182 paf 492: char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];
493: sdata.append_know_length(cindex_tab,
1.185 paf 494: snprintf(cindex_tab, MAX_NUMBER,
1.206 paf 495: column<lsize-1?"%d%c":"%d", column, separators.column),
1.185 paf 496: String::L_CLEAN);
1.31 paf 497: }
498: else
1.182 paf 499: sdata.append_help_length("empty nameless table", 0, String::L_CLEAN);
1.31 paf 500: }
1.182 paf 501: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.188 paf 502: }
1.129 paf 503:
1.31 paf 504: // data lines
1.182 paf 505: Array_iterator<ArrayString*> i(table);
1.98 parser 506: while(i.has_next()) {
1.182 paf 507: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.188 paf 508: maybe_enclose( sdata, *c.next(), separators.encloser, separators.sencloser );
1.98 parser 509: if(c.has_next())
1.206 paf 510: sdata<<*separators.scolumn;
1.31 paf 511: }
1.182 paf 512: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.31 paf 513: }
514:
515: // write
1.217 paf 516: {
517: const char* data_cstr=sdata.cstr();
518: file_write(r.absolute(file_name),
519: data_cstr, sdata.length(), true, do_append);
520: if(*data_cstr) // not empty (when empty it's not heap memory)
521: pa_free((void*)data_cstr); // not needed anymore
522: }
1.22 paf 523:
1.241 misha 524: #else
1.240 misha 525:
1.224 misha 526: ostringstream ost(stringstream::out);
527:
528: // process header
529: if(output_column_names) {
530: if(table.columns()) { // named table
531: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
532: maybe_enclose( ost, *i.next(), separators.encloser );
533: if(i.has_next()){
534: ost<<separators.column;
535: }
536: }
537: } else { // nameless table [we were asked to output column names]
538: if(int lsize=table.count()?table[0]->count():0)
539: for(int column=0; column<lsize; column++) {
1.225 misha 540: if(separators.encloser) {
541: ost<<separators.encloser<<column<<separators.encloser;
542: } else {
1.239 misha 543: ost<<column;
1.225 misha 544: }
1.224 misha 545: if(column<lsize-1){
546: ost<<separators.column;
547: }
548: }
549: else
550: ost<<"empty nameless table";
551: }
552: ost<<'\n';
553: }
554:
555: // process data lines
556: Array_iterator<ArrayString*> i(table);
557: while(i.has_next()) {
558: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
559: maybe_enclose( ost, *c.next(), separators.encloser );
560: if(c.has_next())
561: ost<<separators.column;
562: }
563: ost<<'\n';
564: }
565:
566: // write
567: {
568: string data=ost.str();
569: const char* data_cstr = data.c_str();
570:
571: file_write(r.absolute(file_name), data_cstr, data.length(), true /* as text */, do_append);
572: }
1.240 misha 573:
574: #endif
1.224 misha 575: }
576:
1.182 paf 577: static void _count(Request& r, MethodParams&) {
578: int result=GET_SELF(r, VTable).table().count();
579: r.write_no_lang(*new VInt(result));
1.6 paf 580: }
581:
1.182 paf 582: static void _line(Request& r, MethodParams&) {
583: int result=1+GET_SELF(r, VTable).table().current();
584: r.write_no_lang(*new VInt(result));
1.6 paf 585: }
586:
1.182 paf 587: static void _offset(Request& r, MethodParams& params) {
588: Table& table=GET_SELF(r, VTable).table();
589: if(params.count()) {
1.133 paf 590: bool absolute=false;
1.182 paf 591: if(params.count()>1) {
592: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 593: if(whence=="cur")
1.134 paf 594: absolute=false;
1.133 paf 595: else if(whence=="set")
1.134 paf 596: absolute=true;
1.133 paf 597: else
1.226 misha 598: throw Exception(PARSER_RUNTIME,
1.134 paf 599: &whence,
600: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 601: }
1.133 paf 602:
1.211 paf 603: int offset=params.as_int(params.count()-1, "offset must be expression", r);
604: table.offset(absolute, offset);
1.151 paf 605: } else
1.182 paf 606: r.write_no_lang(*new VInt(table.current()));
1.6 paf 607: }
608:
1.182 paf 609: static void _menu(Request& r, MethodParams& params) {
1.221 paf 610: Temp_hash_value<const String::Body, void*>
611: cycle_data_setter(r.classes_conf, cycle_data_name, /*any not null flag*/&r);
612:
1.182 paf 613: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 614:
1.182 paf 615: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 616:
1.182 paf 617: Table& table=GET_SELF(r, VTable).table();
1.7 paf 618: bool need_delim=false;
1.99 parser 619: int saved_current=table.current();
1.182 paf 620: int size=table.count();
1.99 parser 621: for(int row=0; row<size; row++) {
1.22 paf 622: table.set_current(row);
1.7 paf 623:
1.161 paf 624: StringOrValue sv_processed=r.process(body_code);
1.221 paf 625: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1.242 misha 626:
1.182 paf 627: const String* s_processed=sv_processed.get_string();
628: if(delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body
1.161 paf 629: if(need_delim) // need delim & iteration produced string?
1.150 paf 630: r.write_pass_lang(r.process(*delim_maybe_code));
1.242 misha 631: else
632: need_delim=true;
1.7 paf 633: }
1.242 misha 634:
1.161 paf 635: r.write_pass_lang(sv_processed);
1.221 paf 636:
637: if(lskip==Request::SKIP_BREAK)
638: break;
1.7 paf 639: }
1.99 parser 640: table.set_current(saved_current);
1.7 paf 641: }
642:
1.110 parser 643: #ifndef DOXYGEN
1.74 paf 644: struct Row_info {
1.166 paf 645: Request *r;
1.74 paf 646: Table *table;
1.182 paf 647: Value* key_code;
648: size_t key_field;
649: Array<int>* value_fields;
650: HashStringValue* hash;
1.174 paf 651: Table2hash_distint distinct;
1.182 paf 652: size_t row;
1.227 misha 653: Table2hash_value_type value_type;
1.74 paf 654: };
1.110 parser 655: #endif
1.182 paf 656: static void table_row_to_hash(Table::element_type row, Row_info *info) {
657: const String* key;
658: if(info->key_code) {
659: info->table->set_current(info->row++); // change context row
660: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 661: key=&sv_processed.as_string();
1.227 misha 662: } else {
1.182 paf 663: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 664: }
1.166 paf 665:
666: if(!key)
667: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 668:
1.243 misha 669: bool exist=false;
670: switch(info->value_type) {
671: case C_STRING: {
1.227 misha 672: exist=info->hash->put_dont_replace(*key, new VString(*row->get(info->value_fields->get(0))));
1.243 misha 673: break;
1.227 misha 674: }
1.243 misha 675: case C_HASH: {
1.182 paf 676: VHash* vhash=new VHash;
677: HashStringValue& hash=vhash->hash();
678: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
679: size_t value_field=i.next();
680: if(value_field<row->count())
1.174 paf 681: hash.put(
1.182 paf 682: *info->table->columns()->get(value_field),
683: new VString(*row->get(value_field)));
1.174 paf 684: }
685:
1.227 misha 686: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 687: break;
1.174 paf 688: }
1.243 misha 689: case C_TABLE: {
690: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 691: Table* table;
1.227 misha 692: if(vtable) {
1.243 misha 693: if(info->distinct==D_ILLEGAL) {
694: exist=true;
695: break;
696: }
1.174 paf 697: table=vtable->get_table();
1.227 misha 698: } else {
1.174 paf 699: // no? creating table of same structure as source
1.179 paf 700: Table::Action_options table_options(0, 0);
1.182 paf 701: table=new Table(*info->table, table_options/*no rows, just structure*/);
702: info->hash->put(*key, new VTable(table));
1.174 paf 703: }
1.182 paf 704: *table+=row;
1.243 misha 705: break;
1.174 paf 706: }
1.74 paf 707: }
1.227 misha 708: if(exist && info->distinct==D_ILLEGAL)
709: throw Exception(PARSER_RUNTIME,
710: key,
711: "duplicate key");
1.74 paf 712: }
1.235 misha 713:
714: Table2hash_value_type get_value_type(Value& vvalue_type){
715: if(vvalue_type.is_string()) {
716: const String& svalue_type=*vvalue_type.get_string();
717: if(svalue_type == "table"){
718: return C_TABLE;
719: } else if (svalue_type == "string") {
720: return C_STRING;
721: } else if (svalue_type == "hash") {
722: return C_HASH;
723: } else {
724: throw Exception(PARSER_RUNTIME,
725: &svalue_type,
726: "must be 'hash', 'table' or 'string'");
727: }
728: } else {
729: throw Exception(PARSER_RUNTIME,
730: 0,
731: "'type' must be hash");
732: }
733: }
734:
1.182 paf 735: static void _hash(Request& r, MethodParams& params) {
736: Table& self_table=GET_SELF(r, VTable).table();
737: VHash& result=*new VHash;
1.238 misha 738: if(Table::columns_type columns=self_table.columns()){
1.182 paf 739: if(columns->count()>0) {
1.174 paf 740: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 741: Table2hash_value_type value_type=C_HASH;
1.182 paf 742: int param_index=params.count()-1;
1.166 paf 743: if(param_index>0) {
1.238 misha 744: if(HashStringValue* options=params.as_no_junction(param_index, PARAM_MUST_NOT_BE_CODE).get_hash()){ // options where specified
1.166 paf 745: --param_index;
746: int valid_options=0;
1.238 misha 747: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 748: valid_options++;
1.174 paf 749: Value& vdistinct_value=r.process_to_value(*vdistinct_code);
750: if(vdistinct_value.is_string()) {
751: const String& sdistinct=*vdistinct_value.get_string();
1.227 misha 752: if(sdistinct=="tables") {
753: value_type=C_TABLE;
754: distinct=D_FIRST;
1.238 misha 755: } else {
1.226 misha 756: throw Exception(PARSER_RUNTIME,
1.174 paf 757: &sdistinct,
758: "must be 'tables' or true/false");
1.238 misha 759: }
760: } else {
1.174 paf 761: distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
1.238 misha 762: }
1.166 paf 763: }
1.238 misha 764: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
765: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.227 misha 766: throw Exception(PARSER_RUNTIME,
767: 0,
1.238 misha 768: "you can't specify $.distinct[tables] and $.type[] together");
769:
770: valid_options++;
771: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
772: }
1.226 misha 773:
1.182 paf 774: if(valid_options!=options->count())
1.226 misha 775: throw Exception(PARSER_RUNTIME,
1.182 paf 776: 0,
1.166 paf 777: "called with invalid option");
1.163 paf 778: }
779: }
1.238 misha 780:
781: if(param_index==2) // options was specified but not as hash
1.226 misha 782: throw Exception(PARSER_RUNTIME,
1.182 paf 783: 0,
1.163 paf 784: "options must be hash");
785:
1.182 paf 786: Array<int> value_fields;
1.238 misha 787: if(param_index==0){ // list of columns wasn't specified
788: if(value_type==C_STRING) // $.type[string]
789: throw Exception(PARSER_RUNTIME,
790: 0,
791: "you must specify one value field with option $.type[string]");
792:
793: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
794: value_fields+=i;
795:
796: } else { // list of columns was specified
1.227 misha 797: if(value_type==C_TABLE)
798: throw Exception(PARSER_RUNTIME,
1.174 paf 799: 0,
1.238 misha 800: "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
801:
1.182 paf 802: Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
1.238 misha 803: if(value_fields_param.is_string()) { // one column as string was specified
804: value_fields+=self_table.column_name2index(*value_fields_param.get_string(), true);
805: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
806: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
807: const String& value_field_name =*i.next()->get(0);
808: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 809: }
810: } else
1.226 misha 811: throw Exception(PARSER_RUNTIME,
1.182 paf 812: 0,
1.226 misha 813: "value field(s) must be string or table");
1.239 misha 814: }
1.74 paf 815:
1.227 misha 816: if(value_type==C_STRING && value_fields.count()!=1)
817: throw Exception(PARSER_RUNTIME,
818: 0,
1.238 misha 819: "you can specify only one value field with option $.type[string]");
1.182 paf 820:
821: {
822: Value* key_param=¶ms[0];
1.193 paf 823: Row_info info={
824: &r,
825: &self_table,
826: /*key_code=*/key_param->get_junction()?key_param:0,
1.197 paf 827: /*key_field=*/0/*filled below*/,
1.193 paf 828: &value_fields,
829: &result.hash(),
830: distinct,
1.227 misha 831: /*row=*/0,
832: value_type
1.193 paf 833: };
1.195 paf 834: info.key_field=(info.key_code?-1
835: :self_table.column_name2index(key_param->as_string(), true));
1.182 paf 836:
837: int saved_current=self_table.current();
838: self_table.for_each(table_row_to_hash, &info);
839: self_table.set_current(saved_current);
1.207 paf 840:
841: result.extract_default();
1.182 paf 842: }
1.74 paf 843: }
1.238 misha 844: }
1.97 parser 845: r.write_no_lang(result);
1.74 paf 846: }
847:
1.110 parser 848: #ifndef DOXYGEN
1.78 paf 849: struct Table_seq_item {
1.182 paf 850: ArrayString* row;
1.34 paf 851: union {
1.182 paf 852: const char *c_str;
1.34 paf 853: double d;
854: } value;
1.32 paf 855: };
1.110 parser 856: #endif
1.34 paf 857: static int sort_cmp_string(const void *a, const void *b) {
858: return strcmp(
1.78 paf 859: static_cast<const Table_seq_item *>(a)->value.c_str,
860: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 861: );
862: }
863: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 864: double va=static_cast<const Table_seq_item *>(a)->value.d;
865: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 866: if(va<vb)
867: return -1;
868: else if(va>vb)
869: return +1;
870: else
871: return 0;
872: }
1.182 paf 873: static void _sort(Request& r, MethodParams& params) {
874: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 875:
1.182 paf 876: bool reverse=params.count()>1/*..[desc|asc|]*/?
877: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 878: false; // default=asc
1.32 paf 879:
1.182 paf 880: Table& old_table=GET_SELF(r, VTable).table();
881: Table& new_table=*new Table(old_table.columns());
1.34 paf 882:
1.182 paf 883: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 884: int i;
885:
886: // calculate key values
887: bool key_values_are_strings=true;
1.182 paf 888: int old_count=old_table.count();
889: for(i=0; i<old_count; i++) {
1.101 parser 890: old_table.set_current(i);
1.32 paf 891: // calculate key value
1.182 paf 892: seq[i].row=old_table[i];
893: Value& value=r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/);
1.34 paf 894: if(i==0) // determining key values type by first one
895: key_values_are_strings=value.is_string();
896:
897: if(key_values_are_strings)
898: seq[i].value.c_str=value.as_string().cstr();
899: else
900: seq[i].value.d=value.as_double();
1.32 paf 901: }
902: // sort keys
1.182 paf 903: _qsort(seq, old_count, sizeof(Table_seq_item),
1.34 paf 904: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 905:
1.34 paf 906: // reorder table as they require in 'seq'
1.182 paf 907: for(i=0; i<old_count; i++)
908: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
909:
910: delete[] seq;
1.32 paf 911:
1.116 parser 912: // replace any previous table value
1.182 paf 913: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 914: }
915:
1.176 paf 916: #ifndef DOXYGEN
1.182 paf 917: struct Expression_is_true_info {
1.176 paf 918: Request* r;
919: Value* expression_code;
920: };
921: #endif
1.191 paf 922: static bool expression_is_true(Table&, Expression_is_true_info* info) {
923: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 924: }
925: static bool _locate_expression(Table& table, Table::Action_options o,
1.182 paf 926: Request& r, MethodParams& params) {
927: check_option_param(o.defined, params, 1,
1.176 paf 928: "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 929: Value& expression_code=params.as_junction(0, "must be expression");
1.145 paf 930:
1.182 paf 931: Expression_is_true_info info={&r, &expression_code};
932: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 933: }
1.176 paf 934: static bool _locate_name_value(Table& table, Table::Action_options o,
1.191 paf 935: Request&, MethodParams& params) {
1.182 paf 936: check_option_param(o.defined, params, 2,
1.176 paf 937: "locate by locate by name has parameters: name, value and, maybe, options");
1.182 paf 938: const String& name=params.as_string(0, "column name must be string");
1.232 misha 939: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.182 paf 940: return table.locate(name, value, o);
941: }
942: static void _locate(Request& r, MethodParams& params) {
943: Table& table=GET_SELF(r, VTable).table();
1.72 paf 944:
1.182 paf 945: Table::Action_options o=get_action_options(r, params, table);
946:
947: bool result=params[0].get_junction()?
948: _locate_expression(table, o, r, params) :
949: _locate_name_value(table, o, r, params);
950: r.write_no_lang(*new VBool(result));
1.145 paf 951: }
1.182 paf 952:
953:
1.191 paf 954: static void _flip(Request& r, MethodParams&) {
1.182 paf 955: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 956: Table& new_table=*new Table(0);
1.182 paf 957: if(size_t old_count=old_table.count())
958: if(size_t old_cols=old_table[0]->count())
959: for(size_t column=0; column<old_cols; column++) {
960: Table::element_type new_row(new ArrayString(old_count));
961: for(size_t i=0; i<old_count; i++) {
962: Table::element_type old_row=old_table[i];
963: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 964: }
1.182 paf 965: new_table+=new_row;
1.39 paf 966: }
967:
1.182 paf 968: r.write_no_lang(*new VTable(&new_table));
1.39 paf 969: }
970:
1.182 paf 971: static void _append(Request& r, MethodParams& params) {
1.134 paf 972: // data
1.182 paf 973: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
974: const String& string=r.process_to_string(params.as_junction(0, "body must be code"));
1.41 paf 975:
976: // parse cells
1.182 paf 977: Table::element_type row=new ArrayString;
978: size_t pos_after=0;
979: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 980:
1.182 paf 981: GET_SELF(r, VTable).table()+=row;
1.41 paf 982: }
983:
1.182 paf 984: static void join_named_row(Table& src, Table* dest) {
985: Table::columns_type dest_columns=dest->columns();
986: size_t dest_columns_count=dest_columns->count();
987: Table::element_type dest_row(new ArrayString(dest_columns_count));
988: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
989: const String* src_item=src.item(*dest_columns->get(dest_column));
990: *dest_row+=src_item?src_item:new String;
991: }
992: *dest+=dest_row;
993: }
994: static void join_nameless_row(Table& src, Table* dest) {
995: *dest+=src[src.current()];
996: }
997: static void _join(Request& r, MethodParams& params) {
998: Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 999: if(!maybe_src)
1.226 misha 1000: throw Exception(PARSER_RUNTIME,
1.182 paf 1001: 0,
1.42 paf 1002: "source is not a table");
1.176 paf 1003: Table& src=*maybe_src;
1004:
1.182 paf 1005: Table::Action_options o=get_action_options(r, params, src);
1006: check_option_param(o.defined, params, 1,
1.176 paf 1007: "invalid extra parameter");
1.42 paf 1008:
1.182 paf 1009: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1010: if(&src == &dest)
1.226 misha 1011: throw Exception(PARSER_RUNTIME,
1.182 paf 1012: 0,
1.42 paf 1013: "source and destination are same table");
1014:
1.193 paf 1015: if(dest.columns()) // dest is named
1.182 paf 1016: src.table_for_each(join_named_row, &dest, o);
1017: else // dest is nameless
1018: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1019: }
1020:
1.94 parser 1021: #ifndef DOXYGEN
1.169 paf 1022: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1023: ArrayString& columns;
1.218 paf 1024: int columns_count;
1.182 paf 1025: ArrayString* row;
1.94 parser 1026: public:
1.182 paf 1027: Table* table;
1028: public:
1029: Table_sql_event_handlers() :
1030: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1031: }
1032:
1.182 paf 1033: bool add_column(SQL_Error& error, const char *str, size_t length) {
1.170 paf 1034: try {
1.182 paf 1035: columns+=new String(str, length, true);
1.170 paf 1036: return false;
1037: } catch(...) {
1038: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1039: return true;
1040: }
1041: }
1042: bool before_rows(SQL_Error& error) {
1043: try {
1.182 paf 1044: table=new Table(&columns);
1.218 paf 1045: columns_count=columns.count();
1.170 paf 1046: return false;
1047: } catch(...) {
1048: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1049: return true;
1050: }
1051: }
1052: bool add_row(SQL_Error& error) {
1053: try {
1.218 paf 1054: *table+=row=new ArrayString(columns_count);
1.170 paf 1055: return false;
1056: } catch(...) {
1057: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1058: return true;
1059: }
1060: }
1.182 paf 1061: bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
1.170 paf 1062: try {
1.182 paf 1063: String& cell=*new String;
1064: if(length)
1065: cell.append_know_length(str, length, String::L_TAINTED);
1066: *row+=&cell;
1.170 paf 1067: return false;
1068: } catch(...) {
1069: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1070: return true;
1071: }
1.94 parser 1072: }
1073: };
1074: #endif
1.204 paf 1075:
1076: static void marshal_bind(
1077: HashStringValue::key_type aname,
1078: HashStringValue::value_type avalue,
1079: SQL_Driver::Placeholder** pptr)
1080: {
1081: SQL_Driver::Placeholder& ph=**pptr;
1082: ph.name=aname.cstr();
1.205 paf 1083: ph.value=avalue->as_string().cstr(String::L_UNSPECIFIED);
1.204 paf 1084: ph.is_null=avalue->get_class()==void_class;
1085: ph.were_updated=false;
1086:
1087: (*pptr)++;
1088: }
1089:
1090: // not static, used elsewhere
1091: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1092: int hash_count=hash.count();
1093: placeholders=new(UseGC) SQL_Driver::Placeholder[hash_count];
1094: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1095: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1096: return hash_count;
1097: }
1098:
1099: // not static, used elsewhere
1100: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1101: SQL_Driver::Placeholder* ph=placeholders;
1102: for(int i=0; i<placeholder_count; i++, ph++)
1103: if(ph->were_updated) {
1104: Value* value;
1105: if(ph->is_null)
1106: value=new VVoid();
1107: else
1108: if(ph->value)
1109: value=new VString(*new String(ph->value, 0, true/*tainted*/));
1110: else
1111: value=new VString(*new String());
1112: hash.put(ph->name, value);
1113: }
1114: }
1115:
1.182 paf 1116: static void _sql(Request& r, MethodParams& params) {
1117: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1118:
1.204 paf 1119: HashStringValue* bind=0;
1.244 ! misha 1120: ulong limit=SQL_NO_LIMIT;
1.100 parser 1121: ulong offset=0;
1.182 paf 1122: if(params.count()>1) {
1123: Value& voptions=params.as_no_junction(1, "options must be hash, not code");
1.212 paf 1124: if(voptions.is_defined() && !voptions.is_string())
1.182 paf 1125: if(HashStringValue* options=voptions.get_hash()) {
1.164 paf 1126: int valid_options=0;
1.204 paf 1127: if(Value* vbind=options->get(sql_bind_name)) {
1128: valid_options++;
1129: bind=vbind->get_hash();
1130: }
1.182 paf 1131: if(Value* vlimit=options->get(sql_limit_name)) {
1.244 ! misha 1132: if(vlimit->is_defined()){
! 1133: valid_options++;
! 1134: limit=(ulong)r.process_to_value(*vlimit).as_double();
! 1135: } else
! 1136: throw Exception(PARSER_RUNTIME,
! 1137: 0,
! 1138: "limit must be defined");
1.164 paf 1139: }
1.182 paf 1140: if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 1141: valid_options++;
1.147 paf 1142: offset=(ulong)r.process_to_value(*voffset).as_double();
1.164 paf 1143: }
1.182 paf 1144: if(valid_options!=options->count())
1.226 misha 1145: throw Exception(PARSER_RUNTIME,
1.182 paf 1146: 0,
1.164 paf 1147: "called with invalid option");
1.109 parser 1148: } else
1.226 misha 1149: throw Exception(PARSER_RUNTIME,
1.182 paf 1150: 0,
1.109 parser 1151: "options must be hash");
1.49 paf 1152: }
1153:
1.204 paf 1154: SQL_Driver::Placeholder* placeholders=0;
1155: uint placeholders_count=0;
1156: if(bind)
1157: placeholders_count=marshal_binds(*bind, placeholders);
1158:
1.182 paf 1159: Temp_lang temp_lang(r, String::L_SQL);
1160: const String& statement_string=r.process_to_string(statement);
1161: const char* statement_cstr=
1162: statement_string.cstr(String::L_UNSPECIFIED, r.connection());
1163: Table_sql_event_handlers handlers;
1.135 paf 1164: #ifdef RESOURCES_DEBUG
1165: struct timeval mt[2];
1166: //measure:before
1167: gettimeofday(&mt[0],NULL);
1168: #endif
1.182 paf 1169: r.connection()->query(
1.203 paf 1170: statement_cstr,
1.208 paf 1171: placeholders_count, placeholders,
1.203 paf 1172: offset, limit,
1.160 paf 1173: handlers,
1174: statement_string);
1.135 paf 1175:
1176: #ifdef RESOURCES_DEBUG
1177: //measure:after connect
1178: gettimeofday(&mt[1],NULL);
1179:
1180: double t[2];
1181: for(int i=0;i<2;i++)
1182: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
1183:
1184: r.sql_request_time+=t[1]-t[0];
1185: #endif
1.204 paf 1186:
1187: if(bind)
1188: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1189:
1.182 paf 1190: Table& result=
1191: handlers.table?*handlers.table: // query resulted in table? return it
1192: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1193:
1194: // replace any previous table value
1.182 paf 1195: GET_SELF(r, VTable).set_table(result);
1.49 paf 1196: }
1197:
1.233 misha 1198: static void _columns(Request& r, MethodParams& params) {
1199: const String* column_column_name;
1200: if(params.count()>0)
1201: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1202: else
1203: column_column_name=new String("column");
1.88 parser 1204:
1.182 paf 1205: Table::columns_type result_columns(new ArrayString);
1.233 misha 1206: *result_columns+=column_column_name;
1.182 paf 1207: Table& result_table=*new Table(result_columns);
1.88 parser 1208:
1.182 paf 1209: Table& source_table=GET_SELF(r, VTable).table();
1210: if(Table::columns_type source_columns=source_table.columns()) {
1211: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1212: Table::element_type result_row(new ArrayString);
1213: *result_row+=i.next();
1214: result_table+=result_row;
1.88 parser 1215: }
1216: }
1217:
1.182 paf 1218: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1219: }
1220:
1.182 paf 1221: static void _select(Request& r, MethodParams& params) {
1.231 misha 1222: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1223:
1.182 paf 1224: Table& source_table=GET_SELF(r, VTable).table();
1225: Table& result_table=*new Table(source_table.columns());
1.148 paf 1226:
1227: int saved_current=source_table.current();
1.182 paf 1228: int size=source_table.count();
1.148 paf 1229: for(int row=0; row<size; row++) {
1230: source_table.set_current(row);
1231:
1.150 paf 1232: bool condition=r.process_to_value(vcondition,
1.148 paf 1233: false/*don't intercept string*/).as_bool();
1234:
1235: if(condition) // ...condition is true=
1.182 paf 1236: result_table+=source_table[row]; // =green light to go to result
1.148 paf 1237: }
1238: source_table.set_current(saved_current);
1239:
1.182 paf 1240: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1241: }
1242:
1.66 paf 1243: // constructor
1244:
1.182 paf 1245: MTable::MTable(): Methoded("table") {
1.142 paf 1246: // ^table::create{data}
1247: // ^table::create[nameless]{data}
1248: // ^table::create[table]
1.236 misha 1249: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1250: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1251: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1252:
1.142 paf 1253: // ^table::load[file]
1254: // ^table::load[nameless;file]
1.168 paf 1255: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1256:
1257: // ^table.save[file]
1258: // ^table.save[nameless;file]
1.188 paf 1259: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1260:
1.224 misha 1261: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1262:
1.6 paf 1263: // ^table.count[]
1.66 paf 1264: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 1265:
1266: // ^table.line[]
1.66 paf 1267: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1268:
1.10 paf 1269: // ^table.offset[]
1.133 paf 1270: // ^table.offset(offset)
1271: // ^table.offset[cur|set](offset)
1272: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1273:
1.10 paf 1274: // ^table.menu{code}
1275: // ^table.menu{code}[delim]
1.66 paf 1276: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1277:
1.239 misha 1278: // ^table.hash[key field name]
1279: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1280: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1281:
1.102 parser 1282: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1283: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1284: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1285:
1.36 paf 1286: // ^table.locate[field;value]
1.176 paf 1287: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1288:
1289: // ^table.flip[]
1.66 paf 1290: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1291:
1292: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 1293: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1294:
1.157 paf 1295: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1296: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1297:
1298:
1.239 misha 1299: // ^table::sql[query]
1300: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1301: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1302:
1.239 misha 1303: // ^table.columns[[column name]]
1.233 misha 1304: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1305:
1306: // ^table.select(expression) = table
1307: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.40 paf 1308: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to table.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / classes