Annotation of parser3/src/classes/table.C, revision 1.251
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:
1.251 ! misha 8: static const char * const IDENT_TABLE_C="$Date: 2009-05-04 09:26:20 $";
1.229 misha 9:
1.240 misha 10: #ifndef NO_STRINGSTREAM
1.229 misha 11: #include <sstream>
12: using namespace std;
1.240 misha 13: #endif
1.1 paf 14:
1.105 parser 15: #include "classes.h"
1.182 paf 16: #include "pa_vmethod_frame.h"
17:
1.16 paf 18: #include "pa_common.h"
1.1 paf 19: #include "pa_request.h"
20: #include "pa_vtable.h"
1.6 paf 21: #include "pa_vint.h"
1.51 paf 22: #include "pa_sql_connection.h"
1.72 paf 23: #include "pa_vbool.h"
1.1 paf 24:
1.66 paf 25: // class
26:
1.182 paf 27: class MTable: public Methoded {
1.66 paf 28: public: // VStateless_class
1.209 paf 29: Value* create_new_value(Pool&, HashStringValue&) { return new VTable(); }
1.66 paf 30:
31: public:
1.182 paf 32: MTable();
1.70 paf 33:
34: public: // Methoded
1.66 paf 35: bool used_directly() { return true; }
36: };
1.1 paf 37:
1.182 paf 38: // global variable
39:
40: DECLARE_CLASS_VAR(table, new MTable, 0);
41:
1.221 paf 42: // externs
43:
44: extern String cycle_data_name;
45:
1.182 paf 46: #define TABLE_REVERSE_NAME "reverse"
47:
48: // globals
49:
1.203 paf 50: String sql_bind_name(SQL_BIND_NAME);
1.214 paf 51: String sql_limit_name(PA_SQL_LIMIT_NAME);
52: String sql_offset_name(PA_SQL_OFFSET_NAME);
1.182 paf 53: String sql_default_name(SQL_DEFAULT_NAME);
54: String sql_distinct_name(SQL_DISTINCT_NAME);
1.227 misha 55: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
1.182 paf 56: String table_reverse_name(TABLE_REVERSE_NAME);
57:
1.1 paf 58: // methods
1.66 paf 59:
1.182 paf 60: static Table::Action_options get_action_options(Request& r, MethodParams& params,
61: const Table& source) {
1.176 paf 62: Table::Action_options result;
1.182 paf 63: if(!params.count())
64: return result;
65:
66: Value& maybe_options=params.last();
67: /* can not do it:
68: want to enable ^table::create[$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();
1.99 parser 622: int saved_current=table.current();
1.182 paf 623: int size=table.count();
1.7 paf 624:
1.251 ! misha 625: if(delim_maybe_code) { // delimiter set
1.250 misha 626: bool need_delim=false;
627: for(int row=0; row<size; row++) {
628: table.set_current(row);
629:
630: StringOrValue sv_processed=r.process(body_code);
631: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
632:
633: const String* s_processed=sv_processed.get_string();
1.251 ! misha 634: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 635: if(need_delim) // need delim & iteration produced string?
636: r.write_pass_lang(r.process(*delim_maybe_code));
637: else
638: need_delim=true;
639: }
640:
641: r.write_pass_lang(sv_processed);
1.242 misha 642:
1.250 misha 643: if(lskip==Request::SKIP_BREAK)
644: break;
645: }
646: } else {
647: for(int row=0; row<size; row++) {
648: table.set_current(row);
649:
650: r.process_write(body_code);
651: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
652:
653: if(lskip==Request::SKIP_BREAK)
654: break;
1.7 paf 655: }
656: }
1.99 parser 657: table.set_current(saved_current);
1.7 paf 658: }
659:
1.110 parser 660: #ifndef DOXYGEN
1.74 paf 661: struct Row_info {
1.166 paf 662: Request *r;
1.74 paf 663: Table *table;
1.182 paf 664: Value* key_code;
665: size_t key_field;
666: Array<int>* value_fields;
667: HashStringValue* hash;
1.174 paf 668: Table2hash_distint distinct;
1.182 paf 669: size_t row;
1.227 misha 670: Table2hash_value_type value_type;
1.74 paf 671: };
1.110 parser 672: #endif
1.182 paf 673: static void table_row_to_hash(Table::element_type row, Row_info *info) {
674: const String* key;
675: if(info->key_code) {
676: info->table->set_current(info->row++); // change context row
677: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 678: key=&sv_processed.as_string();
1.227 misha 679: } else {
1.182 paf 680: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 681: }
1.166 paf 682:
683: if(!key)
684: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 685:
1.243 misha 686: bool exist=false;
687: switch(info->value_type) {
688: case C_STRING: {
1.227 misha 689: exist=info->hash->put_dont_replace(*key, new VString(*row->get(info->value_fields->get(0))));
1.243 misha 690: break;
1.227 misha 691: }
1.243 misha 692: case C_HASH: {
1.182 paf 693: VHash* vhash=new VHash;
694: HashStringValue& hash=vhash->hash();
695: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
696: size_t value_field=i.next();
697: if(value_field<row->count())
1.174 paf 698: hash.put(
1.182 paf 699: *info->table->columns()->get(value_field),
700: new VString(*row->get(value_field)));
1.174 paf 701: }
702:
1.227 misha 703: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 704: break;
1.174 paf 705: }
1.243 misha 706: case C_TABLE: {
707: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 708: Table* table;
1.227 misha 709: if(vtable) {
1.243 misha 710: if(info->distinct==D_ILLEGAL) {
711: exist=true;
712: break;
713: }
1.174 paf 714: table=vtable->get_table();
1.227 misha 715: } else {
1.174 paf 716: // no? creating table of same structure as source
1.179 paf 717: Table::Action_options table_options(0, 0);
1.182 paf 718: table=new Table(*info->table, table_options/*no rows, just structure*/);
719: info->hash->put(*key, new VTable(table));
1.174 paf 720: }
1.182 paf 721: *table+=row;
1.243 misha 722: break;
1.174 paf 723: }
1.74 paf 724: }
1.227 misha 725: if(exist && info->distinct==D_ILLEGAL)
726: throw Exception(PARSER_RUNTIME,
727: key,
728: "duplicate key");
1.74 paf 729: }
1.235 misha 730:
731: Table2hash_value_type get_value_type(Value& vvalue_type){
732: if(vvalue_type.is_string()) {
733: const String& svalue_type=*vvalue_type.get_string();
734: if(svalue_type == "table"){
735: return C_TABLE;
736: } else if (svalue_type == "string") {
737: return C_STRING;
738: } else if (svalue_type == "hash") {
739: return C_HASH;
740: } else {
741: throw Exception(PARSER_RUNTIME,
742: &svalue_type,
743: "must be 'hash', 'table' or 'string'");
744: }
745: } else {
746: throw Exception(PARSER_RUNTIME,
747: 0,
748: "'type' must be hash");
749: }
750: }
751:
1.182 paf 752: static void _hash(Request& r, MethodParams& params) {
753: Table& self_table=GET_SELF(r, VTable).table();
754: VHash& result=*new VHash;
1.238 misha 755: if(Table::columns_type columns=self_table.columns()){
1.182 paf 756: if(columns->count()>0) {
1.174 paf 757: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 758: Table2hash_value_type value_type=C_HASH;
1.182 paf 759: int param_index=params.count()-1;
1.166 paf 760: if(param_index>0) {
1.238 misha 761: if(HashStringValue* options=params.as_no_junction(param_index, PARAM_MUST_NOT_BE_CODE).get_hash()){ // options where specified
1.166 paf 762: --param_index;
763: int valid_options=0;
1.238 misha 764: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 765: valid_options++;
1.174 paf 766: Value& vdistinct_value=r.process_to_value(*vdistinct_code);
767: if(vdistinct_value.is_string()) {
768: const String& sdistinct=*vdistinct_value.get_string();
1.227 misha 769: if(sdistinct=="tables") {
770: value_type=C_TABLE;
771: distinct=D_FIRST;
1.238 misha 772: } else {
1.226 misha 773: throw Exception(PARSER_RUNTIME,
1.174 paf 774: &sdistinct,
775: "must be 'tables' or true/false");
1.238 misha 776: }
777: } else {
1.174 paf 778: distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
1.238 misha 779: }
1.166 paf 780: }
1.238 misha 781: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
782: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.227 misha 783: throw Exception(PARSER_RUNTIME,
784: 0,
1.238 misha 785: "you can't specify $.distinct[tables] and $.type[] together");
786:
787: valid_options++;
788: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
789: }
1.226 misha 790:
1.182 paf 791: if(valid_options!=options->count())
1.226 misha 792: throw Exception(PARSER_RUNTIME,
1.182 paf 793: 0,
1.166 paf 794: "called with invalid option");
1.163 paf 795: }
796: }
1.238 misha 797:
798: if(param_index==2) // options was specified but not as hash
1.226 misha 799: throw Exception(PARSER_RUNTIME,
1.182 paf 800: 0,
1.163 paf 801: "options must be hash");
802:
1.182 paf 803: Array<int> value_fields;
1.238 misha 804: if(param_index==0){ // list of columns wasn't specified
805: if(value_type==C_STRING) // $.type[string]
806: throw Exception(PARSER_RUNTIME,
807: 0,
808: "you must specify one value field with option $.type[string]");
809:
810: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
811: value_fields+=i;
812:
813: } else { // list of columns was specified
1.227 misha 814: if(value_type==C_TABLE)
815: throw Exception(PARSER_RUNTIME,
1.174 paf 816: 0,
1.238 misha 817: "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
818:
1.182 paf 819: Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
1.238 misha 820: if(value_fields_param.is_string()) { // one column as string was specified
821: value_fields+=self_table.column_name2index(*value_fields_param.get_string(), true);
822: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
823: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
824: const String& value_field_name =*i.next()->get(0);
825: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 826: }
827: } else
1.226 misha 828: throw Exception(PARSER_RUNTIME,
1.182 paf 829: 0,
1.226 misha 830: "value field(s) must be string or table");
1.239 misha 831: }
1.74 paf 832:
1.227 misha 833: if(value_type==C_STRING && value_fields.count()!=1)
834: throw Exception(PARSER_RUNTIME,
835: 0,
1.238 misha 836: "you can specify only one value field with option $.type[string]");
1.182 paf 837:
838: {
839: Value* key_param=¶ms[0];
1.193 paf 840: Row_info info={
841: &r,
842: &self_table,
843: /*key_code=*/key_param->get_junction()?key_param:0,
1.197 paf 844: /*key_field=*/0/*filled below*/,
1.193 paf 845: &value_fields,
846: &result.hash(),
847: distinct,
1.227 misha 848: /*row=*/0,
849: value_type
1.193 paf 850: };
1.195 paf 851: info.key_field=(info.key_code?-1
852: :self_table.column_name2index(key_param->as_string(), true));
1.182 paf 853:
854: int saved_current=self_table.current();
855: self_table.for_each(table_row_to_hash, &info);
856: self_table.set_current(saved_current);
1.207 paf 857:
858: result.extract_default();
1.182 paf 859: }
1.74 paf 860: }
1.238 misha 861: }
1.97 parser 862: r.write_no_lang(result);
1.74 paf 863: }
864:
1.110 parser 865: #ifndef DOXYGEN
1.78 paf 866: struct Table_seq_item {
1.182 paf 867: ArrayString* row;
1.34 paf 868: union {
1.182 paf 869: const char *c_str;
1.34 paf 870: double d;
871: } value;
1.32 paf 872: };
1.110 parser 873: #endif
1.34 paf 874: static int sort_cmp_string(const void *a, const void *b) {
875: return strcmp(
1.78 paf 876: static_cast<const Table_seq_item *>(a)->value.c_str,
877: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 878: );
879: }
880: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 881: double va=static_cast<const Table_seq_item *>(a)->value.d;
882: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 883: if(va<vb)
884: return -1;
885: else if(va>vb)
886: return +1;
887: else
888: return 0;
889: }
1.182 paf 890: static void _sort(Request& r, MethodParams& params) {
891: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 892:
1.182 paf 893: bool reverse=params.count()>1/*..[desc|asc|]*/?
894: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 895: false; // default=asc
1.32 paf 896:
1.182 paf 897: Table& old_table=GET_SELF(r, VTable).table();
898: Table& new_table=*new Table(old_table.columns());
1.34 paf 899:
1.182 paf 900: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 901: int i;
902:
903: // calculate key values
904: bool key_values_are_strings=true;
1.182 paf 905: int old_count=old_table.count();
906: for(i=0; i<old_count; i++) {
1.101 parser 907: old_table.set_current(i);
1.32 paf 908: // calculate key value
1.182 paf 909: seq[i].row=old_table[i];
910: Value& value=r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/);
1.34 paf 911: if(i==0) // determining key values type by first one
912: key_values_are_strings=value.is_string();
913:
914: if(key_values_are_strings)
915: seq[i].value.c_str=value.as_string().cstr();
916: else
917: seq[i].value.d=value.as_double();
1.32 paf 918: }
919: // sort keys
1.182 paf 920: _qsort(seq, old_count, sizeof(Table_seq_item),
1.34 paf 921: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 922:
1.34 paf 923: // reorder table as they require in 'seq'
1.182 paf 924: for(i=0; i<old_count; i++)
925: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
926:
927: delete[] seq;
1.32 paf 928:
1.116 parser 929: // replace any previous table value
1.182 paf 930: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 931: }
932:
1.176 paf 933: #ifndef DOXYGEN
1.182 paf 934: struct Expression_is_true_info {
1.176 paf 935: Request* r;
936: Value* expression_code;
937: };
938: #endif
1.191 paf 939: static bool expression_is_true(Table&, Expression_is_true_info* info) {
940: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 941: }
942: static bool _locate_expression(Table& table, Table::Action_options o,
1.182 paf 943: Request& r, MethodParams& params) {
944: check_option_param(o.defined, params, 1,
1.176 paf 945: "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 946: Value& expression_code=params.as_junction(0, "must be expression");
1.145 paf 947:
1.182 paf 948: Expression_is_true_info info={&r, &expression_code};
949: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 950: }
1.176 paf 951: static bool _locate_name_value(Table& table, Table::Action_options o,
1.191 paf 952: Request&, MethodParams& params) {
1.182 paf 953: check_option_param(o.defined, params, 2,
1.176 paf 954: "locate by locate by name has parameters: name, value and, maybe, options");
1.182 paf 955: const String& name=params.as_string(0, "column name must be string");
1.232 misha 956: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.182 paf 957: return table.locate(name, value, o);
958: }
959: static void _locate(Request& r, MethodParams& params) {
960: Table& table=GET_SELF(r, VTable).table();
1.72 paf 961:
1.182 paf 962: Table::Action_options o=get_action_options(r, params, table);
963:
964: bool result=params[0].get_junction()?
965: _locate_expression(table, o, r, params) :
966: _locate_name_value(table, o, r, params);
1.249 misha 967: r.write_no_lang(VBool::get(result));
1.145 paf 968: }
1.182 paf 969:
970:
1.191 paf 971: static void _flip(Request& r, MethodParams&) {
1.182 paf 972: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 973: Table& new_table=*new Table(0);
1.182 paf 974: if(size_t old_count=old_table.count())
975: if(size_t old_cols=old_table[0]->count())
976: for(size_t column=0; column<old_cols; column++) {
977: Table::element_type new_row(new ArrayString(old_count));
978: for(size_t i=0; i<old_count; i++) {
979: Table::element_type old_row=old_table[i];
980: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 981: }
1.182 paf 982: new_table+=new_row;
1.39 paf 983: }
984:
1.182 paf 985: r.write_no_lang(*new VTable(&new_table));
1.39 paf 986: }
987:
1.182 paf 988: static void _append(Request& r, MethodParams& params) {
1.134 paf 989: // data
1.182 paf 990: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
991: const String& string=r.process_to_string(params.as_junction(0, "body must be code"));
1.41 paf 992:
993: // parse cells
1.182 paf 994: Table::element_type row=new ArrayString;
995: size_t pos_after=0;
996: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 997:
1.182 paf 998: GET_SELF(r, VTable).table()+=row;
1.41 paf 999: }
1000:
1.182 paf 1001: static void join_named_row(Table& src, Table* dest) {
1002: Table::columns_type dest_columns=dest->columns();
1003: size_t dest_columns_count=dest_columns->count();
1004: Table::element_type dest_row(new ArrayString(dest_columns_count));
1005: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1006: const String* src_item=src.item(*dest_columns->get(dest_column));
1007: *dest_row+=src_item?src_item:new String;
1008: }
1009: *dest+=dest_row;
1010: }
1011: static void join_nameless_row(Table& src, Table* dest) {
1012: *dest+=src[src.current()];
1013: }
1014: static void _join(Request& r, MethodParams& params) {
1015: Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 1016: if(!maybe_src)
1.226 misha 1017: throw Exception(PARSER_RUNTIME,
1.182 paf 1018: 0,
1.42 paf 1019: "source is not a table");
1.176 paf 1020: Table& src=*maybe_src;
1021:
1.182 paf 1022: Table::Action_options o=get_action_options(r, params, src);
1023: check_option_param(o.defined, params, 1,
1.176 paf 1024: "invalid extra parameter");
1.42 paf 1025:
1.182 paf 1026: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1027: if(&src == &dest)
1.226 misha 1028: throw Exception(PARSER_RUNTIME,
1.182 paf 1029: 0,
1.42 paf 1030: "source and destination are same table");
1031:
1.193 paf 1032: if(dest.columns()) // dest is named
1.182 paf 1033: src.table_for_each(join_named_row, &dest, o);
1034: else // dest is nameless
1035: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1036: }
1037:
1.94 parser 1038: #ifndef DOXYGEN
1.169 paf 1039: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1040: ArrayString& columns;
1.218 paf 1041: int columns_count;
1.182 paf 1042: ArrayString* row;
1.94 parser 1043: public:
1.182 paf 1044: Table* table;
1045: public:
1046: Table_sql_event_handlers() :
1047: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1048: }
1049:
1.182 paf 1050: bool add_column(SQL_Error& error, const char *str, size_t length) {
1.170 paf 1051: try {
1.182 paf 1052: columns+=new String(str, length, true);
1.170 paf 1053: return false;
1054: } catch(...) {
1055: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1056: return true;
1057: }
1058: }
1059: bool before_rows(SQL_Error& error) {
1060: try {
1.182 paf 1061: table=new Table(&columns);
1.218 paf 1062: columns_count=columns.count();
1.170 paf 1063: return false;
1064: } catch(...) {
1065: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1066: return true;
1067: }
1068: }
1069: bool add_row(SQL_Error& error) {
1070: try {
1.218 paf 1071: *table+=row=new ArrayString(columns_count);
1.170 paf 1072: return false;
1073: } catch(...) {
1074: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1075: return true;
1076: }
1077: }
1.182 paf 1078: bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
1.170 paf 1079: try {
1.182 paf 1080: String& cell=*new String;
1081: if(length)
1082: cell.append_know_length(str, length, String::L_TAINTED);
1083: *row+=&cell;
1.170 paf 1084: return false;
1085: } catch(...) {
1086: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1087: return true;
1088: }
1.94 parser 1089: }
1090: };
1091: #endif
1.204 paf 1092:
1093: static void marshal_bind(
1094: HashStringValue::key_type aname,
1095: HashStringValue::value_type avalue,
1096: SQL_Driver::Placeholder** pptr)
1097: {
1098: SQL_Driver::Placeholder& ph=**pptr;
1099: ph.name=aname.cstr();
1.205 paf 1100: ph.value=avalue->as_string().cstr(String::L_UNSPECIFIED);
1.204 paf 1101: ph.is_null=avalue->get_class()==void_class;
1102: ph.were_updated=false;
1103:
1104: (*pptr)++;
1105: }
1106:
1107: // not static, used elsewhere
1108: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1109: int hash_count=hash.count();
1110: placeholders=new(UseGC) SQL_Driver::Placeholder[hash_count];
1111: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1112: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1113: return hash_count;
1114: }
1115:
1116: // not static, used elsewhere
1117: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1118: SQL_Driver::Placeholder* ph=placeholders;
1119: for(int i=0; i<placeholder_count; i++, ph++)
1120: if(ph->were_updated) {
1121: Value* value;
1122: if(ph->is_null)
1.248 misha 1123: value=VVoid::get();
1.204 paf 1124: else
1125: if(ph->value)
1126: value=new VString(*new String(ph->value, 0, true/*tainted*/));
1127: else
1128: value=new VString(*new String());
1129: hash.put(ph->name, value);
1130: }
1131: }
1132:
1.182 paf 1133: static void _sql(Request& r, MethodParams& params) {
1134: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1135:
1.204 paf 1136: HashStringValue* bind=0;
1.244 misha 1137: ulong limit=SQL_NO_LIMIT;
1.100 parser 1138: ulong offset=0;
1.182 paf 1139: if(params.count()>1) {
1140: Value& voptions=params.as_no_junction(1, "options must be hash, not code");
1.212 paf 1141: if(voptions.is_defined() && !voptions.is_string())
1.182 paf 1142: if(HashStringValue* options=voptions.get_hash()) {
1.164 paf 1143: int valid_options=0;
1.204 paf 1144: if(Value* vbind=options->get(sql_bind_name)) {
1145: valid_options++;
1146: bind=vbind->get_hash();
1147: }
1.182 paf 1148: if(Value* vlimit=options->get(sql_limit_name)) {
1.245 misha 1149: valid_options++;
1150: limit=(ulong)r.process_to_value(*vlimit).as_double();
1.164 paf 1151: }
1.182 paf 1152: if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 1153: valid_options++;
1.147 paf 1154: offset=(ulong)r.process_to_value(*voffset).as_double();
1.164 paf 1155: }
1.182 paf 1156: if(valid_options!=options->count())
1.226 misha 1157: throw Exception(PARSER_RUNTIME,
1.182 paf 1158: 0,
1.164 paf 1159: "called with invalid option");
1.109 parser 1160: } else
1.226 misha 1161: throw Exception(PARSER_RUNTIME,
1.182 paf 1162: 0,
1.109 parser 1163: "options must be hash");
1.49 paf 1164: }
1165:
1.204 paf 1166: SQL_Driver::Placeholder* placeholders=0;
1167: uint placeholders_count=0;
1168: if(bind)
1169: placeholders_count=marshal_binds(*bind, placeholders);
1170:
1.182 paf 1171: Temp_lang temp_lang(r, String::L_SQL);
1172: const String& statement_string=r.process_to_string(statement);
1173: const char* statement_cstr=
1174: statement_string.cstr(String::L_UNSPECIFIED, r.connection());
1175: Table_sql_event_handlers handlers;
1.135 paf 1176: #ifdef RESOURCES_DEBUG
1177: struct timeval mt[2];
1178: //measure:before
1179: gettimeofday(&mt[0],NULL);
1180: #endif
1.182 paf 1181: r.connection()->query(
1.203 paf 1182: statement_cstr,
1.208 paf 1183: placeholders_count, placeholders,
1.203 paf 1184: offset, limit,
1.160 paf 1185: handlers,
1186: statement_string);
1.135 paf 1187:
1188: #ifdef RESOURCES_DEBUG
1189: //measure:after connect
1190: gettimeofday(&mt[1],NULL);
1191:
1192: double t[2];
1193: for(int i=0;i<2;i++)
1194: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
1195:
1196: r.sql_request_time+=t[1]-t[0];
1197: #endif
1.204 paf 1198:
1199: if(bind)
1200: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1201:
1.182 paf 1202: Table& result=
1203: handlers.table?*handlers.table: // query resulted in table? return it
1204: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1205:
1206: // replace any previous table value
1.182 paf 1207: GET_SELF(r, VTable).set_table(result);
1.49 paf 1208: }
1209:
1.233 misha 1210: static void _columns(Request& r, MethodParams& params) {
1211: const String* column_column_name;
1212: if(params.count()>0)
1213: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1214: else
1215: column_column_name=new String("column");
1.88 parser 1216:
1.182 paf 1217: Table::columns_type result_columns(new ArrayString);
1.233 misha 1218: *result_columns+=column_column_name;
1.182 paf 1219: Table& result_table=*new Table(result_columns);
1.88 parser 1220:
1.182 paf 1221: Table& source_table=GET_SELF(r, VTable).table();
1222: if(Table::columns_type source_columns=source_table.columns()) {
1223: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1224: Table::element_type result_row(new ArrayString);
1225: *result_row+=i.next();
1226: result_table+=result_row;
1.88 parser 1227: }
1228: }
1229:
1.182 paf 1230: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1231: }
1232:
1.182 paf 1233: static void _select(Request& r, MethodParams& params) {
1.231 misha 1234: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1235:
1.182 paf 1236: Table& source_table=GET_SELF(r, VTable).table();
1237: Table& result_table=*new Table(source_table.columns());
1.148 paf 1238:
1239: int saved_current=source_table.current();
1.182 paf 1240: int size=source_table.count();
1.148 paf 1241: for(int row=0; row<size; row++) {
1242: source_table.set_current(row);
1243:
1.150 paf 1244: bool condition=r.process_to_value(vcondition,
1.148 paf 1245: false/*don't intercept string*/).as_bool();
1246:
1247: if(condition) // ...condition is true=
1.182 paf 1248: result_table+=source_table[row]; // =green light to go to result
1.148 paf 1249: }
1250: source_table.set_current(saved_current);
1251:
1.182 paf 1252: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1253: }
1254:
1.66 paf 1255: // constructor
1256:
1.182 paf 1257: MTable::MTable(): Methoded("table") {
1.142 paf 1258: // ^table::create{data}
1259: // ^table::create[nameless]{data}
1260: // ^table::create[table]
1.236 misha 1261: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1262: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1263: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1264:
1.142 paf 1265: // ^table::load[file]
1266: // ^table::load[nameless;file]
1.168 paf 1267: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1268:
1269: // ^table.save[file]
1270: // ^table.save[nameless;file]
1.188 paf 1271: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1272:
1.224 misha 1273: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1274:
1.6 paf 1275: // ^table.count[]
1.66 paf 1276: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 1277:
1278: // ^table.line[]
1.66 paf 1279: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1280:
1.10 paf 1281: // ^table.offset[]
1.133 paf 1282: // ^table.offset(offset)
1283: // ^table.offset[cur|set](offset)
1284: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1285:
1.10 paf 1286: // ^table.menu{code}
1287: // ^table.menu{code}[delim]
1.66 paf 1288: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1289:
1.239 misha 1290: // ^table.hash[key field name]
1291: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1292: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1293:
1.102 parser 1294: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1295: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1296: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1297:
1.36 paf 1298: // ^table.locate[field;value]
1.176 paf 1299: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1300:
1301: // ^table.flip[]
1.66 paf 1302: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1303:
1304: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 1305: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1306:
1.157 paf 1307: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1308: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1309:
1310:
1.239 misha 1311: // ^table::sql[query]
1312: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1313: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1314:
1.239 misha 1315: // ^table.columns[[column name]]
1.233 misha 1316: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1317:
1318: // ^table.select(expression) = table
1319: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.40 paf 1320: }
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