Annotation of parser3/src/classes/table.C, revision 1.248
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.248 ! misha 4: Copyright (c) 2001-2009 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:
1.248 ! misha 8: static const char * const IDENT_TABLE_C="$Date: 2009-01-25 02:04:00 $";
1.229 misha 9:
1.240 misha 10: #ifndef NO_STRINGSTREAM
1.229 misha 11: #include <sstream>
12: using namespace std;
1.240 misha 13: #endif
1.1 paf 14:
1.105 parser 15: #include "classes.h"
1.182 paf 16: #include "pa_vmethod_frame.h"
17:
1.16 paf 18: #include "pa_common.h"
1.1 paf 19: #include "pa_request.h"
20: #include "pa_vtable.h"
1.6 paf 21: #include "pa_vint.h"
1.51 paf 22: #include "pa_sql_connection.h"
1.72 paf 23: #include "pa_vbool.h"
1.1 paf 24:
1.66 paf 25: // class
26:
1.182 paf 27: class MTable: public Methoded {
1.66 paf 28: public: // VStateless_class
1.209 paf 29: Value* create_new_value(Pool&, HashStringValue&) { return new VTable(); }
1.66 paf 30:
31: public:
1.182 paf 32: MTable();
1.70 paf 33:
34: public: // Methoded
1.66 paf 35: bool used_directly() { return true; }
36: };
1.1 paf 37:
1.182 paf 38: // global variable
39:
40: DECLARE_CLASS_VAR(table, new MTable, 0);
41:
1.221 paf 42: // externs
43:
44: extern String cycle_data_name;
45:
1.182 paf 46: #define TABLE_REVERSE_NAME "reverse"
47:
48: // globals
49:
1.203 paf 50: String sql_bind_name(SQL_BIND_NAME);
1.214 paf 51: String sql_limit_name(PA_SQL_LIMIT_NAME);
52: String sql_offset_name(PA_SQL_OFFSET_NAME);
1.182 paf 53: String sql_default_name(SQL_DEFAULT_NAME);
54: String sql_distinct_name(SQL_DISTINCT_NAME);
1.227 misha 55: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
1.182 paf 56: String table_reverse_name(TABLE_REVERSE_NAME);
57:
1.1 paf 58: // methods
1.66 paf 59:
1.182 paf 60: static Table::Action_options get_action_options(Request& r, MethodParams& params,
61: const Table& source) {
1.176 paf 62: Table::Action_options result;
1.182 paf 63: if(!params.count())
64: return result;
65:
66: Value& maybe_options=params.last();
67: /* can not do it:
68: want to enable ^table::create[$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
1.247 misha 347: char *data=file_load_text(r,
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);
1.246 misha 454: String file_spec=r.absolute(file_name);
455:
456: if(do_append && file_exist(file_spec))
457: output_column_names=false;
1.188 paf 458:
459: TableSeparators separators;
460: if(param_index<params.count()) {
1.222 paf 461: Value& voptions=params.as_no_junction(param_index++, "additional params must be hash");
462: if( voptions.is_defined() && !voptions.is_string() ) {
463: if(HashStringValue* options=voptions.get_hash()) {
1.223 paf 464: int valid_options=separators.load(*options);
465: if(valid_options!=options->count())
1.226 misha 466: throw Exception(PARSER_RUNTIME,
1.223 paf 467: 0,
468: "invalid option passed");
469: } else {
1.226 misha 470: throw Exception(PARSER_RUNTIME,
1.188 paf 471: 0,
1.223 paf 472: "additional params must be hash (did you spell mode parameter correctly?)");
473: }
1.222 paf 474: }
1.188 paf 475: }
476: if(param_index<params.count())
1.226 misha 477: throw Exception(PARSER_RUNTIME,
1.188 paf 478: 0,
479: "bad mode (must be nameless or append)");
1.22 paf 480:
1.182 paf 481: Table& table=GET_SELF(r, VTable).table();
1.31 paf 482:
1.241 misha 483: #ifdef NO_STRINGSTREAM
484:
1.182 paf 485: String sdata;
1.188 paf 486: if(output_column_names) {
1.31 paf 487: if(table.columns()) { // named table
1.182 paf 488: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.188 paf 489: maybe_enclose( sdata, *i.next(), separators.encloser, separators.sencloser );
1.98 parser 490: if(i.has_next())
1.206 paf 491: sdata<<*separators.scolumn;
1.31 paf 492: }
1.188 paf 493: } else { // nameless table [we were asked to output column names]
1.182 paf 494: if(int lsize=table.count()?table[0]->count():0)
1.31 paf 495: for(int column=0; column<lsize; column++) {
1.182 paf 496: char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];
497: sdata.append_know_length(cindex_tab,
1.185 paf 498: snprintf(cindex_tab, MAX_NUMBER,
1.206 paf 499: column<lsize-1?"%d%c":"%d", column, separators.column),
1.185 paf 500: String::L_CLEAN);
1.31 paf 501: }
502: else
1.182 paf 503: sdata.append_help_length("empty nameless table", 0, String::L_CLEAN);
1.31 paf 504: }
1.182 paf 505: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.188 paf 506: }
1.129 paf 507:
1.31 paf 508: // data lines
1.182 paf 509: Array_iterator<ArrayString*> i(table);
1.98 parser 510: while(i.has_next()) {
1.182 paf 511: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.188 paf 512: maybe_enclose( sdata, *c.next(), separators.encloser, separators.sencloser );
1.98 parser 513: if(c.has_next())
1.206 paf 514: sdata<<*separators.scolumn;
1.31 paf 515: }
1.182 paf 516: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.31 paf 517: }
518:
519: // write
1.217 paf 520: {
521: const char* data_cstr=sdata.cstr();
1.246 misha 522: file_write(file_spec,
1.217 paf 523: data_cstr, sdata.length(), true, do_append);
524: if(*data_cstr) // not empty (when empty it's not heap memory)
525: pa_free((void*)data_cstr); // not needed anymore
526: }
1.22 paf 527:
1.241 misha 528: #else
1.240 misha 529:
1.224 misha 530: ostringstream ost(stringstream::out);
531:
532: // process header
533: if(output_column_names) {
534: if(table.columns()) { // named table
535: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
536: maybe_enclose( ost, *i.next(), separators.encloser );
537: if(i.has_next()){
538: ost<<separators.column;
539: }
540: }
541: } else { // nameless table [we were asked to output column names]
542: if(int lsize=table.count()?table[0]->count():0)
543: for(int column=0; column<lsize; column++) {
1.225 misha 544: if(separators.encloser) {
545: ost<<separators.encloser<<column<<separators.encloser;
546: } else {
1.239 misha 547: ost<<column;
1.225 misha 548: }
1.224 misha 549: if(column<lsize-1){
550: ost<<separators.column;
551: }
552: }
553: else
554: ost<<"empty nameless table";
555: }
556: ost<<'\n';
557: }
558:
559: // process data lines
560: Array_iterator<ArrayString*> i(table);
561: while(i.has_next()) {
562: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
563: maybe_enclose( ost, *c.next(), separators.encloser );
564: if(c.has_next())
565: ost<<separators.column;
566: }
567: ost<<'\n';
568: }
569:
570: // write
571: {
572: string data=ost.str();
1.246 misha 573: const char* data_cstr=data.c_str();
1.224 misha 574:
1.246 misha 575: file_write(file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.224 misha 576: }
1.240 misha 577:
578: #endif
1.224 misha 579: }
580:
1.182 paf 581: static void _count(Request& r, MethodParams&) {
582: int result=GET_SELF(r, VTable).table().count();
583: r.write_no_lang(*new VInt(result));
1.6 paf 584: }
585:
1.182 paf 586: static void _line(Request& r, MethodParams&) {
587: int result=1+GET_SELF(r, VTable).table().current();
588: r.write_no_lang(*new VInt(result));
1.6 paf 589: }
590:
1.182 paf 591: static void _offset(Request& r, MethodParams& params) {
592: Table& table=GET_SELF(r, VTable).table();
593: if(params.count()) {
1.133 paf 594: bool absolute=false;
1.182 paf 595: if(params.count()>1) {
596: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 597: if(whence=="cur")
1.134 paf 598: absolute=false;
1.133 paf 599: else if(whence=="set")
1.134 paf 600: absolute=true;
1.133 paf 601: else
1.226 misha 602: throw Exception(PARSER_RUNTIME,
1.134 paf 603: &whence,
604: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 605: }
1.133 paf 606:
1.211 paf 607: int offset=params.as_int(params.count()-1, "offset must be expression", r);
608: table.offset(absolute, offset);
1.151 paf 609: } else
1.182 paf 610: r.write_no_lang(*new VInt(table.current()));
1.6 paf 611: }
612:
1.182 paf 613: static void _menu(Request& r, MethodParams& params) {
1.221 paf 614: Temp_hash_value<const String::Body, void*>
615: cycle_data_setter(r.classes_conf, cycle_data_name, /*any not null flag*/&r);
616:
1.182 paf 617: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 618:
1.182 paf 619: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 620:
1.182 paf 621: Table& table=GET_SELF(r, VTable).table();
1.7 paf 622: bool need_delim=false;
1.99 parser 623: int saved_current=table.current();
1.182 paf 624: int size=table.count();
1.99 parser 625: for(int row=0; row<size; row++) {
1.22 paf 626: table.set_current(row);
1.7 paf 627:
1.161 paf 628: StringOrValue sv_processed=r.process(body_code);
1.221 paf 629: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1.242 misha 630:
1.182 paf 631: const String* s_processed=sv_processed.get_string();
632: if(delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body
1.161 paf 633: if(need_delim) // need delim & iteration produced string?
1.150 paf 634: r.write_pass_lang(r.process(*delim_maybe_code));
1.242 misha 635: else
636: need_delim=true;
1.7 paf 637: }
1.242 misha 638:
1.161 paf 639: r.write_pass_lang(sv_processed);
1.221 paf 640:
641: if(lskip==Request::SKIP_BREAK)
642: break;
1.7 paf 643: }
1.99 parser 644: table.set_current(saved_current);
1.7 paf 645: }
646:
1.110 parser 647: #ifndef DOXYGEN
1.74 paf 648: struct Row_info {
1.166 paf 649: Request *r;
1.74 paf 650: Table *table;
1.182 paf 651: Value* key_code;
652: size_t key_field;
653: Array<int>* value_fields;
654: HashStringValue* hash;
1.174 paf 655: Table2hash_distint distinct;
1.182 paf 656: size_t row;
1.227 misha 657: Table2hash_value_type value_type;
1.74 paf 658: };
1.110 parser 659: #endif
1.182 paf 660: static void table_row_to_hash(Table::element_type row, Row_info *info) {
661: const String* key;
662: if(info->key_code) {
663: info->table->set_current(info->row++); // change context row
664: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 665: key=&sv_processed.as_string();
1.227 misha 666: } else {
1.182 paf 667: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 668: }
1.166 paf 669:
670: if(!key)
671: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 672:
1.243 misha 673: bool exist=false;
674: switch(info->value_type) {
675: case C_STRING: {
1.227 misha 676: exist=info->hash->put_dont_replace(*key, new VString(*row->get(info->value_fields->get(0))));
1.243 misha 677: break;
1.227 misha 678: }
1.243 misha 679: case C_HASH: {
1.182 paf 680: VHash* vhash=new VHash;
681: HashStringValue& hash=vhash->hash();
682: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
683: size_t value_field=i.next();
684: if(value_field<row->count())
1.174 paf 685: hash.put(
1.182 paf 686: *info->table->columns()->get(value_field),
687: new VString(*row->get(value_field)));
1.174 paf 688: }
689:
1.227 misha 690: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 691: break;
1.174 paf 692: }
1.243 misha 693: case C_TABLE: {
694: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 695: Table* table;
1.227 misha 696: if(vtable) {
1.243 misha 697: if(info->distinct==D_ILLEGAL) {
698: exist=true;
699: break;
700: }
1.174 paf 701: table=vtable->get_table();
1.227 misha 702: } else {
1.174 paf 703: // no? creating table of same structure as source
1.179 paf 704: Table::Action_options table_options(0, 0);
1.182 paf 705: table=new Table(*info->table, table_options/*no rows, just structure*/);
706: info->hash->put(*key, new VTable(table));
1.174 paf 707: }
1.182 paf 708: *table+=row;
1.243 misha 709: break;
1.174 paf 710: }
1.74 paf 711: }
1.227 misha 712: if(exist && info->distinct==D_ILLEGAL)
713: throw Exception(PARSER_RUNTIME,
714: key,
715: "duplicate key");
1.74 paf 716: }
1.235 misha 717:
718: Table2hash_value_type get_value_type(Value& vvalue_type){
719: if(vvalue_type.is_string()) {
720: const String& svalue_type=*vvalue_type.get_string();
721: if(svalue_type == "table"){
722: return C_TABLE;
723: } else if (svalue_type == "string") {
724: return C_STRING;
725: } else if (svalue_type == "hash") {
726: return C_HASH;
727: } else {
728: throw Exception(PARSER_RUNTIME,
729: &svalue_type,
730: "must be 'hash', 'table' or 'string'");
731: }
732: } else {
733: throw Exception(PARSER_RUNTIME,
734: 0,
735: "'type' must be hash");
736: }
737: }
738:
1.182 paf 739: static void _hash(Request& r, MethodParams& params) {
740: Table& self_table=GET_SELF(r, VTable).table();
741: VHash& result=*new VHash;
1.238 misha 742: if(Table::columns_type columns=self_table.columns()){
1.182 paf 743: if(columns->count()>0) {
1.174 paf 744: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 745: Table2hash_value_type value_type=C_HASH;
1.182 paf 746: int param_index=params.count()-1;
1.166 paf 747: if(param_index>0) {
1.238 misha 748: if(HashStringValue* options=params.as_no_junction(param_index, PARAM_MUST_NOT_BE_CODE).get_hash()){ // options where specified
1.166 paf 749: --param_index;
750: int valid_options=0;
1.238 misha 751: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 752: valid_options++;
1.174 paf 753: Value& vdistinct_value=r.process_to_value(*vdistinct_code);
754: if(vdistinct_value.is_string()) {
755: const String& sdistinct=*vdistinct_value.get_string();
1.227 misha 756: if(sdistinct=="tables") {
757: value_type=C_TABLE;
758: distinct=D_FIRST;
1.238 misha 759: } else {
1.226 misha 760: throw Exception(PARSER_RUNTIME,
1.174 paf 761: &sdistinct,
762: "must be 'tables' or true/false");
1.238 misha 763: }
764: } else {
1.174 paf 765: distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
1.238 misha 766: }
1.166 paf 767: }
1.238 misha 768: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
769: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.227 misha 770: throw Exception(PARSER_RUNTIME,
771: 0,
1.238 misha 772: "you can't specify $.distinct[tables] and $.type[] together");
773:
774: valid_options++;
775: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
776: }
1.226 misha 777:
1.182 paf 778: if(valid_options!=options->count())
1.226 misha 779: throw Exception(PARSER_RUNTIME,
1.182 paf 780: 0,
1.166 paf 781: "called with invalid option");
1.163 paf 782: }
783: }
1.238 misha 784:
785: if(param_index==2) // options was specified but not as hash
1.226 misha 786: throw Exception(PARSER_RUNTIME,
1.182 paf 787: 0,
1.163 paf 788: "options must be hash");
789:
1.182 paf 790: Array<int> value_fields;
1.238 misha 791: if(param_index==0){ // list of columns wasn't specified
792: if(value_type==C_STRING) // $.type[string]
793: throw Exception(PARSER_RUNTIME,
794: 0,
795: "you must specify one value field with option $.type[string]");
796:
797: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
798: value_fields+=i;
799:
800: } else { // list of columns was specified
1.227 misha 801: if(value_type==C_TABLE)
802: throw Exception(PARSER_RUNTIME,
1.174 paf 803: 0,
1.238 misha 804: "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
805:
1.182 paf 806: Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
1.238 misha 807: if(value_fields_param.is_string()) { // one column as string was specified
808: value_fields+=self_table.column_name2index(*value_fields_param.get_string(), true);
809: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
810: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
811: const String& value_field_name =*i.next()->get(0);
812: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 813: }
814: } else
1.226 misha 815: throw Exception(PARSER_RUNTIME,
1.182 paf 816: 0,
1.226 misha 817: "value field(s) must be string or table");
1.239 misha 818: }
1.74 paf 819:
1.227 misha 820: if(value_type==C_STRING && value_fields.count()!=1)
821: throw Exception(PARSER_RUNTIME,
822: 0,
1.238 misha 823: "you can specify only one value field with option $.type[string]");
1.182 paf 824:
825: {
826: Value* key_param=¶ms[0];
1.193 paf 827: Row_info info={
828: &r,
829: &self_table,
830: /*key_code=*/key_param->get_junction()?key_param:0,
1.197 paf 831: /*key_field=*/0/*filled below*/,
1.193 paf 832: &value_fields,
833: &result.hash(),
834: distinct,
1.227 misha 835: /*row=*/0,
836: value_type
1.193 paf 837: };
1.195 paf 838: info.key_field=(info.key_code?-1
839: :self_table.column_name2index(key_param->as_string(), true));
1.182 paf 840:
841: int saved_current=self_table.current();
842: self_table.for_each(table_row_to_hash, &info);
843: self_table.set_current(saved_current);
1.207 paf 844:
845: result.extract_default();
1.182 paf 846: }
1.74 paf 847: }
1.238 misha 848: }
1.97 parser 849: r.write_no_lang(result);
1.74 paf 850: }
851:
1.110 parser 852: #ifndef DOXYGEN
1.78 paf 853: struct Table_seq_item {
1.182 paf 854: ArrayString* row;
1.34 paf 855: union {
1.182 paf 856: const char *c_str;
1.34 paf 857: double d;
858: } value;
1.32 paf 859: };
1.110 parser 860: #endif
1.34 paf 861: static int sort_cmp_string(const void *a, const void *b) {
862: return strcmp(
1.78 paf 863: static_cast<const Table_seq_item *>(a)->value.c_str,
864: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 865: );
866: }
867: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 868: double va=static_cast<const Table_seq_item *>(a)->value.d;
869: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 870: if(va<vb)
871: return -1;
872: else if(va>vb)
873: return +1;
874: else
875: return 0;
876: }
1.182 paf 877: static void _sort(Request& r, MethodParams& params) {
878: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 879:
1.182 paf 880: bool reverse=params.count()>1/*..[desc|asc|]*/?
881: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 882: false; // default=asc
1.32 paf 883:
1.182 paf 884: Table& old_table=GET_SELF(r, VTable).table();
885: Table& new_table=*new Table(old_table.columns());
1.34 paf 886:
1.182 paf 887: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 888: int i;
889:
890: // calculate key values
891: bool key_values_are_strings=true;
1.182 paf 892: int old_count=old_table.count();
893: for(i=0; i<old_count; i++) {
1.101 parser 894: old_table.set_current(i);
1.32 paf 895: // calculate key value
1.182 paf 896: seq[i].row=old_table[i];
897: Value& value=r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/);
1.34 paf 898: if(i==0) // determining key values type by first one
899: key_values_are_strings=value.is_string();
900:
901: if(key_values_are_strings)
902: seq[i].value.c_str=value.as_string().cstr();
903: else
904: seq[i].value.d=value.as_double();
1.32 paf 905: }
906: // sort keys
1.182 paf 907: _qsort(seq, old_count, sizeof(Table_seq_item),
1.34 paf 908: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 909:
1.34 paf 910: // reorder table as they require in 'seq'
1.182 paf 911: for(i=0; i<old_count; i++)
912: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
913:
914: delete[] seq;
1.32 paf 915:
1.116 parser 916: // replace any previous table value
1.182 paf 917: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 918: }
919:
1.176 paf 920: #ifndef DOXYGEN
1.182 paf 921: struct Expression_is_true_info {
1.176 paf 922: Request* r;
923: Value* expression_code;
924: };
925: #endif
1.191 paf 926: static bool expression_is_true(Table&, Expression_is_true_info* info) {
927: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 928: }
929: static bool _locate_expression(Table& table, Table::Action_options o,
1.182 paf 930: Request& r, MethodParams& params) {
931: check_option_param(o.defined, params, 1,
1.176 paf 932: "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 933: Value& expression_code=params.as_junction(0, "must be expression");
1.145 paf 934:
1.182 paf 935: Expression_is_true_info info={&r, &expression_code};
936: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 937: }
1.176 paf 938: static bool _locate_name_value(Table& table, Table::Action_options o,
1.191 paf 939: Request&, MethodParams& params) {
1.182 paf 940: check_option_param(o.defined, params, 2,
1.176 paf 941: "locate by locate by name has parameters: name, value and, maybe, options");
1.182 paf 942: const String& name=params.as_string(0, "column name must be string");
1.232 misha 943: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.182 paf 944: return table.locate(name, value, o);
945: }
946: static void _locate(Request& r, MethodParams& params) {
947: Table& table=GET_SELF(r, VTable).table();
1.72 paf 948:
1.182 paf 949: Table::Action_options o=get_action_options(r, params, table);
950:
951: bool result=params[0].get_junction()?
952: _locate_expression(table, o, r, params) :
953: _locate_name_value(table, o, r, params);
954: r.write_no_lang(*new VBool(result));
1.145 paf 955: }
1.182 paf 956:
957:
1.191 paf 958: static void _flip(Request& r, MethodParams&) {
1.182 paf 959: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 960: Table& new_table=*new Table(0);
1.182 paf 961: if(size_t old_count=old_table.count())
962: if(size_t old_cols=old_table[0]->count())
963: for(size_t column=0; column<old_cols; column++) {
964: Table::element_type new_row(new ArrayString(old_count));
965: for(size_t i=0; i<old_count; i++) {
966: Table::element_type old_row=old_table[i];
967: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 968: }
1.182 paf 969: new_table+=new_row;
1.39 paf 970: }
971:
1.182 paf 972: r.write_no_lang(*new VTable(&new_table));
1.39 paf 973: }
974:
1.182 paf 975: static void _append(Request& r, MethodParams& params) {
1.134 paf 976: // data
1.182 paf 977: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
978: const String& string=r.process_to_string(params.as_junction(0, "body must be code"));
1.41 paf 979:
980: // parse cells
1.182 paf 981: Table::element_type row=new ArrayString;
982: size_t pos_after=0;
983: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 984:
1.182 paf 985: GET_SELF(r, VTable).table()+=row;
1.41 paf 986: }
987:
1.182 paf 988: static void join_named_row(Table& src, Table* dest) {
989: Table::columns_type dest_columns=dest->columns();
990: size_t dest_columns_count=dest_columns->count();
991: Table::element_type dest_row(new ArrayString(dest_columns_count));
992: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
993: const String* src_item=src.item(*dest_columns->get(dest_column));
994: *dest_row+=src_item?src_item:new String;
995: }
996: *dest+=dest_row;
997: }
998: static void join_nameless_row(Table& src, Table* dest) {
999: *dest+=src[src.current()];
1000: }
1001: static void _join(Request& r, MethodParams& params) {
1002: Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 1003: if(!maybe_src)
1.226 misha 1004: throw Exception(PARSER_RUNTIME,
1.182 paf 1005: 0,
1.42 paf 1006: "source is not a table");
1.176 paf 1007: Table& src=*maybe_src;
1008:
1.182 paf 1009: Table::Action_options o=get_action_options(r, params, src);
1010: check_option_param(o.defined, params, 1,
1.176 paf 1011: "invalid extra parameter");
1.42 paf 1012:
1.182 paf 1013: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1014: if(&src == &dest)
1.226 misha 1015: throw Exception(PARSER_RUNTIME,
1.182 paf 1016: 0,
1.42 paf 1017: "source and destination are same table");
1018:
1.193 paf 1019: if(dest.columns()) // dest is named
1.182 paf 1020: src.table_for_each(join_named_row, &dest, o);
1021: else // dest is nameless
1022: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1023: }
1024:
1.94 parser 1025: #ifndef DOXYGEN
1.169 paf 1026: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1027: ArrayString& columns;
1.218 paf 1028: int columns_count;
1.182 paf 1029: ArrayString* row;
1.94 parser 1030: public:
1.182 paf 1031: Table* table;
1032: public:
1033: Table_sql_event_handlers() :
1034: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1035: }
1036:
1.182 paf 1037: bool add_column(SQL_Error& error, const char *str, size_t length) {
1.170 paf 1038: try {
1.182 paf 1039: columns+=new String(str, length, true);
1.170 paf 1040: return false;
1041: } catch(...) {
1042: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1043: return true;
1044: }
1045: }
1046: bool before_rows(SQL_Error& error) {
1047: try {
1.182 paf 1048: table=new Table(&columns);
1.218 paf 1049: columns_count=columns.count();
1.170 paf 1050: return false;
1051: } catch(...) {
1052: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1053: return true;
1054: }
1055: }
1056: bool add_row(SQL_Error& error) {
1057: try {
1.218 paf 1058: *table+=row=new ArrayString(columns_count);
1.170 paf 1059: return false;
1060: } catch(...) {
1061: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1062: return true;
1063: }
1064: }
1.182 paf 1065: bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
1.170 paf 1066: try {
1.182 paf 1067: String& cell=*new String;
1068: if(length)
1069: cell.append_know_length(str, length, String::L_TAINTED);
1070: *row+=&cell;
1.170 paf 1071: return false;
1072: } catch(...) {
1073: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1074: return true;
1075: }
1.94 parser 1076: }
1077: };
1078: #endif
1.204 paf 1079:
1080: static void marshal_bind(
1081: HashStringValue::key_type aname,
1082: HashStringValue::value_type avalue,
1083: SQL_Driver::Placeholder** pptr)
1084: {
1085: SQL_Driver::Placeholder& ph=**pptr;
1086: ph.name=aname.cstr();
1.205 paf 1087: ph.value=avalue->as_string().cstr(String::L_UNSPECIFIED);
1.204 paf 1088: ph.is_null=avalue->get_class()==void_class;
1089: ph.were_updated=false;
1090:
1091: (*pptr)++;
1092: }
1093:
1094: // not static, used elsewhere
1095: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1096: int hash_count=hash.count();
1097: placeholders=new(UseGC) SQL_Driver::Placeholder[hash_count];
1098: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1099: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1100: return hash_count;
1101: }
1102:
1103: // not static, used elsewhere
1104: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1105: SQL_Driver::Placeholder* ph=placeholders;
1106: for(int i=0; i<placeholder_count; i++, ph++)
1107: if(ph->were_updated) {
1108: Value* value;
1109: if(ph->is_null)
1.248 ! misha 1110: value=VVoid::get();
1.204 paf 1111: else
1112: if(ph->value)
1113: value=new VString(*new String(ph->value, 0, true/*tainted*/));
1114: else
1115: value=new VString(*new String());
1116: hash.put(ph->name, value);
1117: }
1118: }
1119:
1.182 paf 1120: static void _sql(Request& r, MethodParams& params) {
1121: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1122:
1.204 paf 1123: HashStringValue* bind=0;
1.244 misha 1124: ulong limit=SQL_NO_LIMIT;
1.100 parser 1125: ulong offset=0;
1.182 paf 1126: if(params.count()>1) {
1127: Value& voptions=params.as_no_junction(1, "options must be hash, not code");
1.212 paf 1128: if(voptions.is_defined() && !voptions.is_string())
1.182 paf 1129: if(HashStringValue* options=voptions.get_hash()) {
1.164 paf 1130: int valid_options=0;
1.204 paf 1131: if(Value* vbind=options->get(sql_bind_name)) {
1132: valid_options++;
1133: bind=vbind->get_hash();
1134: }
1.182 paf 1135: if(Value* vlimit=options->get(sql_limit_name)) {
1.245 misha 1136: valid_options++;
1137: limit=(ulong)r.process_to_value(*vlimit).as_double();
1.164 paf 1138: }
1.182 paf 1139: if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 1140: valid_options++;
1.147 paf 1141: offset=(ulong)r.process_to_value(*voffset).as_double();
1.164 paf 1142: }
1.182 paf 1143: if(valid_options!=options->count())
1.226 misha 1144: throw Exception(PARSER_RUNTIME,
1.182 paf 1145: 0,
1.164 paf 1146: "called with invalid option");
1.109 parser 1147: } else
1.226 misha 1148: throw Exception(PARSER_RUNTIME,
1.182 paf 1149: 0,
1.109 parser 1150: "options must be hash");
1.49 paf 1151: }
1152:
1.204 paf 1153: SQL_Driver::Placeholder* placeholders=0;
1154: uint placeholders_count=0;
1155: if(bind)
1156: placeholders_count=marshal_binds(*bind, placeholders);
1157:
1.182 paf 1158: Temp_lang temp_lang(r, String::L_SQL);
1159: const String& statement_string=r.process_to_string(statement);
1160: const char* statement_cstr=
1161: statement_string.cstr(String::L_UNSPECIFIED, r.connection());
1162: Table_sql_event_handlers handlers;
1.135 paf 1163: #ifdef RESOURCES_DEBUG
1164: struct timeval mt[2];
1165: //measure:before
1166: gettimeofday(&mt[0],NULL);
1167: #endif
1.182 paf 1168: r.connection()->query(
1.203 paf 1169: statement_cstr,
1.208 paf 1170: placeholders_count, placeholders,
1.203 paf 1171: offset, limit,
1.160 paf 1172: handlers,
1173: statement_string);
1.135 paf 1174:
1175: #ifdef RESOURCES_DEBUG
1176: //measure:after connect
1177: gettimeofday(&mt[1],NULL);
1178:
1179: double t[2];
1180: for(int i=0;i<2;i++)
1181: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
1182:
1183: r.sql_request_time+=t[1]-t[0];
1184: #endif
1.204 paf 1185:
1186: if(bind)
1187: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1188:
1.182 paf 1189: Table& result=
1190: handlers.table?*handlers.table: // query resulted in table? return it
1191: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1192:
1193: // replace any previous table value
1.182 paf 1194: GET_SELF(r, VTable).set_table(result);
1.49 paf 1195: }
1196:
1.233 misha 1197: static void _columns(Request& r, MethodParams& params) {
1198: const String* column_column_name;
1199: if(params.count()>0)
1200: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1201: else
1202: column_column_name=new String("column");
1.88 parser 1203:
1.182 paf 1204: Table::columns_type result_columns(new ArrayString);
1.233 misha 1205: *result_columns+=column_column_name;
1.182 paf 1206: Table& result_table=*new Table(result_columns);
1.88 parser 1207:
1.182 paf 1208: Table& source_table=GET_SELF(r, VTable).table();
1209: if(Table::columns_type source_columns=source_table.columns()) {
1210: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1211: Table::element_type result_row(new ArrayString);
1212: *result_row+=i.next();
1213: result_table+=result_row;
1.88 parser 1214: }
1215: }
1216:
1.182 paf 1217: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1218: }
1219:
1.182 paf 1220: static void _select(Request& r, MethodParams& params) {
1.231 misha 1221: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1222:
1.182 paf 1223: Table& source_table=GET_SELF(r, VTable).table();
1224: Table& result_table=*new Table(source_table.columns());
1.148 paf 1225:
1226: int saved_current=source_table.current();
1.182 paf 1227: int size=source_table.count();
1.148 paf 1228: for(int row=0; row<size; row++) {
1229: source_table.set_current(row);
1230:
1.150 paf 1231: bool condition=r.process_to_value(vcondition,
1.148 paf 1232: false/*don't intercept string*/).as_bool();
1233:
1234: if(condition) // ...condition is true=
1.182 paf 1235: result_table+=source_table[row]; // =green light to go to result
1.148 paf 1236: }
1237: source_table.set_current(saved_current);
1238:
1.182 paf 1239: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1240: }
1241:
1.66 paf 1242: // constructor
1243:
1.182 paf 1244: MTable::MTable(): Methoded("table") {
1.142 paf 1245: // ^table::create{data}
1246: // ^table::create[nameless]{data}
1247: // ^table::create[table]
1.236 misha 1248: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1249: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1250: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1251:
1.142 paf 1252: // ^table::load[file]
1253: // ^table::load[nameless;file]
1.168 paf 1254: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1255:
1256: // ^table.save[file]
1257: // ^table.save[nameless;file]
1.188 paf 1258: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1259:
1.224 misha 1260: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1261:
1.6 paf 1262: // ^table.count[]
1.66 paf 1263: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 1264:
1265: // ^table.line[]
1.66 paf 1266: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1267:
1.10 paf 1268: // ^table.offset[]
1.133 paf 1269: // ^table.offset(offset)
1270: // ^table.offset[cur|set](offset)
1271: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1272:
1.10 paf 1273: // ^table.menu{code}
1274: // ^table.menu{code}[delim]
1.66 paf 1275: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1276:
1.239 misha 1277: // ^table.hash[key field name]
1278: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1279: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1280:
1.102 parser 1281: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1282: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1283: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1284:
1.36 paf 1285: // ^table.locate[field;value]
1.176 paf 1286: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1287:
1288: // ^table.flip[]
1.66 paf 1289: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1290:
1291: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 1292: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1293:
1.157 paf 1294: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1295: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1296:
1297:
1.239 misha 1298: // ^table::sql[query]
1299: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1300: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1301:
1.239 misha 1302: // ^table.columns[[column name]]
1.233 misha 1303: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1304:
1305: // ^table.select(expression) = table
1306: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.40 paf 1307: }
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