Annotation of parser3/src/classes/table.C, revision 1.239
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.210 paf 4: Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com)
1.144 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.154 paf 6: */
1.221 paf 7:
1.239 ! misha 8: static const char * const IDENT_TABLE_C="$Date: 2008-01-22 13:19:08 $";
1.229 misha 9:
10: #include <sstream>
11: using namespace std;
1.1 paf 12:
1.105 parser 13: #include "classes.h"
1.182 paf 14: #include "pa_vmethod_frame.h"
15:
1.16 paf 16: #include "pa_common.h"
1.1 paf 17: #include "pa_request.h"
18: #include "pa_vtable.h"
1.6 paf 19: #include "pa_vint.h"
1.51 paf 20: #include "pa_sql_connection.h"
1.72 paf 21: #include "pa_vbool.h"
1.1 paf 22:
1.66 paf 23: // class
24:
1.182 paf 25: class MTable: public Methoded {
1.66 paf 26: public: // VStateless_class
1.209 paf 27: Value* create_new_value(Pool&, HashStringValue&) { return new VTable(); }
1.66 paf 28:
29: public:
1.182 paf 30: MTable();
1.70 paf 31:
32: public: // Methoded
1.66 paf 33: bool used_directly() { return true; }
34: };
1.1 paf 35:
1.182 paf 36: // global variable
37:
38: DECLARE_CLASS_VAR(table, new MTable, 0);
39:
1.221 paf 40: // externs
41:
42: extern String cycle_data_name;
43:
1.182 paf 44: #define TABLE_REVERSE_NAME "reverse"
45:
46: // globals
47:
1.203 paf 48: String sql_bind_name(SQL_BIND_NAME);
1.214 paf 49: String sql_limit_name(PA_SQL_LIMIT_NAME);
50: String sql_offset_name(PA_SQL_OFFSET_NAME);
1.182 paf 51: String sql_default_name(SQL_DEFAULT_NAME);
52: String sql_distinct_name(SQL_DISTINCT_NAME);
1.227 misha 53: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
1.182 paf 54: String table_reverse_name(TABLE_REVERSE_NAME);
55:
1.1 paf 56: // methods
1.66 paf 57:
1.182 paf 58: static Table::Action_options get_action_options(Request& r, MethodParams& params,
59: const Table& source) {
1.176 paf 60: Table::Action_options result;
1.182 paf 61: if(!params.count())
62: return result;
63:
64: Value& maybe_options=params.last();
65: /* can not do it:
66: want to enable ^table::create[$source;
67: # $.option[]
68: ]
69: but there is ^table.locate[name;value]
1.176 paf 70:
1.212 paf 71: ...if(voptions.is_defined() && !voptions.is_string()))
1.182 paf 72: if(maybe_options.is_string()) { // allow empty options
73: result.defined=true;
1.176 paf 74: return result;
1.182 paf 75: }
76: */
77: HashStringValue* options=maybe_options.get_hash();
1.176 paf 78: if(!options)
79: return result;
80:
81: result.defined=true;
82: bool defined_offset=false;
83:
84: int valid_options=0;
1.182 paf 85: if(Value* voffset=options->get(sql_offset_name)) {
1.176 paf 86: valid_options++;
87: defined_offset=true;
88: if(voffset->is_string()) {
1.182 paf 89: const String& soffset=*voffset->get_string();
1.176 paf 90: if(soffset == "cur")
91: result.offset=source.current();
92: else
1.226 misha 93: throw Exception(PARSER_RUNTIME,
1.176 paf 94: &soffset,
95: "must be 'cur' string or expression");
96: } else
97: result.offset=r.process_to_value(*voffset).as_int();
98: }
1.182 paf 99: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 100: valid_options++;
101: result.limit=r.process_to_value(*vlimit).as_int();
102: }
1.182 paf 103: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
104: valid_options++;
105: result.reverse=r.process_to_value(*vreverse).as_bool();
106: if(result.reverse && !defined_offset)
107: result.offset=source.count()-1;
108: }
109:
110: if(valid_options!=options->count())
1.226 misha 111: throw Exception(PARSER_RUNTIME,
1.182 paf 112: 0,
1.176 paf 113: "called with invalid option");
114:
115: return result;
116: }
1.180 paf 117: static void check_option_param(bool options_defined,
1.182 paf 118: MethodParams& params, size_t next_param_index,
1.176 paf 119: const char *msg) {
1.182 paf 120: if(next_param_index+(options_defined?1:0) != params.count())
1.226 misha 121: throw Exception(PARSER_RUNTIME,
1.182 paf 122: 0,
1.176 paf 123: "%s", msg);
1.157 paf 124: }
125:
1.236 misha 126: struct TableSeparators {
127: char column; const String* scolumn;
128: char encloser; const String* sencloser;
129:
130: TableSeparators():
131: column('\t'), scolumn(new String("\t", false)),
132: encloser(0), sencloser(0)
133: {}
134: int load( HashStringValue& options ) {
135: int result=0;
136: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
137: scolumn=&vseparator->as_string();
138: if(scolumn->length()!=1)
139: throw Exception(PARSER_RUNTIME,
140: scolumn,
141: "separator must be one character long");
142: column=scolumn->first_char();
143: result++;
144: }
145: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
146: sencloser=&vencloser->as_string();
147: if(sencloser->length()!=1)
148: throw Exception(PARSER_RUNTIME,
149: sencloser,
150: "encloser must be one character long");
151: encloser=sencloser->first_char();
152: result++;
153: }
154: return result;
155: }
156: };
157:
1.182 paf 158: static void _create(Request& r, MethodParams& params) {
1.157 paf 159: // clone/copy part?
1.182 paf 160: if(Table *source=params[0].get_table()) {
161: Table::Action_options o=get_action_options(r, params, *source);
162: check_option_param(o.defined, params, 1,
1.176 paf 163: "too many parameters");
1.182 paf 164: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 165: return;
166: }
1.142 paf 167:
1.236 misha 168: size_t data_param_index=0;
169: bool nameless=false;
170:
171: if(params.count()>1) {
172: if(params[0].is_string()){ // can be nameless only
173: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
174: if(snameless!="nameless")
175: throw Exception(PARSER_RUNTIME,
176: &snameless,
177: "table::create called with more then 1 param, first param may be only 'nameless'");
178: nameless=true;
179: data_param_index++;
180: }
181: }
182:
183: HashStringValue *options=0;
184: TableSeparators separators;
185:
186: size_t options_param_index=data_param_index+1;
187: if(
188: options_param_index<params.count()
189: && (options=params.as_no_junction(options_param_index, "additional params must be hash").get_hash())
190: ) {
191: // cloning, so that we could change
192: options=new HashStringValue(*options);
193: separators.load(*options);
194: if(separators.encloser){
195: throw Exception(PARSER_RUNTIME,
196: 0,
197: "encloser not supported for table::create yet");
198: }
199: }
200:
201: // data
1.182 paf 202: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
203: const String& data=
1.236 misha 204: r.process_to_string(params.as_junction(data_param_index, "body must be code"));
1.44 paf 205:
206: // parse columns
1.182 paf 207: size_t raw_pos_after=0;
208: Table::columns_type columns;
1.236 misha 209:
210: if(nameless){
1.182 paf 211: columns=Table::columns_type(0); // nameless
1.21 paf 212: } else {
1.182 paf 213: columns=Table::columns_type(new ArrayString);
1.44 paf 214:
1.182 paf 215: ArrayString head;
216: data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);
217: if(head.count()) {
218: size_t col_pos_after=0;
1.236 misha 219: head[0]->split(*columns, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 220: }
1.44 paf 221: }
222:
1.182 paf 223: Table& table=*new Table(columns);
1.44 paf 224: // parse cells
1.182 paf 225:
226: ArrayString rows;
227: data.split(rows, raw_pos_after, "\n", String::L_AS_IS);
228: Array_iterator<const String*> i(rows);
1.98 parser 229: while(i.has_next()) {
1.182 paf 230: Table::element_type row(new ArrayString);
231: const String& string=*i.next();
1.118 parser 232: // remove comment lines
1.182 paf 233: if(!string.length())
1.44 paf 234: continue;
235:
1.182 paf 236: size_t col_pos_after=0;
1.236 misha 237: string.split(*row, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 238: table+=row;
1.17 paf 239: }
1.1 paf 240:
1.44 paf 241: // replace any previous table value
1.182 paf 242: GET_SELF(r, VTable).set_table(table);
1.44 paf 243: }
244:
1.187 paf 245: struct lsplit_result {
246: char* piece;
247: char delim;
248:
249: operator bool() { return piece!=0; }
250: };
251:
252: inline lsplit_result lsplit(char* string, char delim1, char delim2) {
253: lsplit_result result;
254: if(string) {
255: char delims[]={delim1, delim2, 0};
256: if(char* v=strpbrk(string, delims)) {
257: result.delim=*v;
258: *v=0;
259: result.piece=v+1;
260: return result;
261: }
262: }
263: result.piece=0;
264: result.delim=0;
265: return result;
266: }
267:
268: inline lsplit_result lsplit(char* *string_ref, char delim1, char delim2) {
269: lsplit_result result;
270: result.piece=*string_ref;
271: lsplit_result next=lsplit(*string_ref, delim1, delim2);
272: result.delim=next.delim;
273: *string_ref=next.piece;
274: return result;
275: }
276:
277: static lsplit_result lsplit(char** string_ref, char delim1, char delim2, char encloser) {
278: lsplit_result result;
279:
280: if(char* string=*string_ref) {
281: if(encloser && *string==encloser) {
282: string++;
283:
284: char *read;
285: char *write;
286: write=read=string;
287: char c;
1.193 paf 288: while((c=*read++)) {
1.187 paf 289: if(c==encloser) {
290: char n=*read;
291: if(n==encloser) // double-encloser stands for encloser
292: read++;
293: else if(n==delim1 || n==delim2) {
294: result.delim=n;
295: read++;
296: break;
297: }
298: }
299:
300: *write++=c;
301: }
302: *write=0; // terminate
303: *string_ref=c? read: 0;
304: result.piece=string;
305: return result;
306: } else
307: return lsplit(string_ref, delim1, delim2);
308: }
309: result.piece=0;
310: return result;
311: }
312:
313: static void skip_empty_and_comment_lines( char** data_ref ) {
314: if(char *data=*data_ref) {
315: while( char c=*data ) {
316: if( c== '\n' || c == '#' ) {
317: /*nowhere=*/getrow(&data); // remove empty&comment lines
1.199 paf 318: if(!(*data_ref=data))
319: break;
1.187 paf 320: continue;
321: }
322: break;
323: }
324: }
325: }
326:
1.182 paf 327: static void _load(Request& r, MethodParams& params) {
1.232 misha 328: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 329: int filename_param_index=0;
330: bool nameless=first_param=="nameless";
331: if(nameless)
332: filename_param_index++;
1.182 paf 333: size_t options_param_index=filename_param_index+1;
1.186 paf 334:
335: HashStringValue *options=0;
1.187 paf 336: TableSeparators separators;
1.186 paf 337: if(options_param_index<params.count()
338: && (options=params.as_no_junction(options_param_index, "additional params must be hash").get_hash())) {
339: // cloning, so that we could change [to simplify checks on params inside file_read_text
340: options=new HashStringValue(*options);
1.187 paf 341: separators.load(*options);
1.186 paf 342: }
343:
1.44 paf 344: // loading text
1.182 paf 345: char *data=file_read_text(r.charsets,
1.232 misha 346: r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)),
1.168 paf 347: true,
1.186 paf 348: options
1.168 paf 349: );
1.44 paf 350:
1.1 paf 351: // parse columns
1.182 paf 352: Table::columns_type columns;
1.168 paf 353: if(nameless) {
1.182 paf 354: columns=Table::columns_type(0); // nameless
1.1 paf 355: } else {
1.182 paf 356: columns=Table::columns_type(new ArrayString);
1.1 paf 357:
1.187 paf 358: skip_empty_and_comment_lines(&data);
359: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
360: *columns+=new String(sr.piece, 0, true);
361: if(sr.delim=='\n')
362: break;
1.139 paf 363: }
1.1 paf 364: }
1.187 paf 365:
366: Table& table=*new Table(columns);
1.219 paf 367: int columns_count=columns? columns->count(): 0;
1.1 paf 368:
369: // parse cells
1.218 paf 370: Table::element_type row(new ArrayString(columns_count));
1.187 paf 371: skip_empty_and_comment_lines(&data);
372: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.201 paf 373: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
374: break;
1.187 paf 375: *row+=new String(sr.piece, 0, true);
376: if(sr.delim=='\n') {
377: table+=row;
1.218 paf 378: row=new ArrayString(columns_count);
1.187 paf 379: skip_empty_and_comment_lines(&data);
1.1 paf 380: }
1.187 paf 381: }
382: // last line [if without \n]
383: if(row->count())
1.1 paf 384: table+=row;
1.187 paf 385:
1.1 paf 386: // replace any previous table value
1.182 paf 387: GET_SELF(r, VTable).set_table(table);
1.1 paf 388: }
1.2 paf 389:
1.224 misha 390: void maybe_enclose( String& to, const String& from, char encloser, const String* sencloser ) {
1.188 paf 391: if(encloser) {
392: to<<*sencloser;
393: // while we have 'encloser'...
1.189 paf 394: size_t pos_after=0;
1.220 paf 395: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
396: pos_before++; // including first encloser (and skipping it for next pos)
397: to<<from.mid(pos_after, pos_before);
398: to<<*sencloser; // doubling encloser
1.188 paf 399: }
400: // last piece
401: size_t from_length=from.length();
402: if(pos_after<from_length)
403: to<<from.mid(pos_after, from_length);
404:
405: to<<*sencloser;
406: } else
1.202 paf 407: to<<from;
1.188 paf 408: }
409:
1.224 misha 410: void maybe_enclose( ostringstream& to, const String& from, char encloser ) {
411: if(encloser) {
412: to<<encloser;
413: // while we have 'encloser'...
414: size_t pos_after=0;
415: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
416: pos_before++; // including first encloser (and skipping it for next pos)
417: to<<from.mid(pos_after, pos_before).cstr();
418: to<<encloser; // doubling encloser
419: }
420: // last piece
421: size_t from_length=from.length();
422: if(pos_after<from_length)
423: to<<from.mid(pos_after, from_length).cstr();
424:
425: to<<encloser;
426: } else
427: to<<from.cstr();
428: }
429:
1.236 misha 430: /*
1.224 misha 431: static void _save_old(Request& r, MethodParams& params) {
1.237 misha 432: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 433: size_t param_index=1;
434:
435: bool do_append=false;
436: bool output_column_names=true;
437:
438: // mode?
439: if(first_arg=="append")
440: do_append=true;
441: else if(first_arg=="nameless")
442: output_column_names=false;
443: else
444: --param_index;
445:
1.232 misha 446: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.188 paf 447:
448: TableSeparators separators;
449: if(param_index<params.count()) {
1.222 paf 450: Value& voptions=params.as_no_junction(param_index++, "additional params must be hash");
451: if( voptions.is_defined() && !voptions.is_string() ) {
452: if(HashStringValue* options=voptions.get_hash()) {
1.223 paf 453: int valid_options=separators.load(*options);
454: if(valid_options!=options->count())
1.226 misha 455: throw Exception(PARSER_RUNTIME,
1.223 paf 456: 0,
457: "invalid option passed");
458: } else {
1.226 misha 459: throw Exception(PARSER_RUNTIME,
1.188 paf 460: 0,
1.223 paf 461: "additional params must be hash (did you spell mode parameter correctly?)");
462: }
1.222 paf 463: }
1.188 paf 464: }
465: if(param_index<params.count())
1.226 misha 466: throw Exception(PARSER_RUNTIME,
1.188 paf 467: 0,
468: "bad mode (must be nameless or append)");
1.22 paf 469:
1.182 paf 470: Table& table=GET_SELF(r, VTable).table();
1.31 paf 471:
1.182 paf 472: String sdata;
1.188 paf 473: if(output_column_names) {
1.31 paf 474: if(table.columns()) { // named table
1.182 paf 475: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.188 paf 476: maybe_enclose( sdata, *i.next(), separators.encloser, separators.sencloser );
1.98 parser 477: if(i.has_next())
1.206 paf 478: sdata<<*separators.scolumn;
1.31 paf 479: }
1.188 paf 480: } else { // nameless table [we were asked to output column names]
1.182 paf 481: if(int lsize=table.count()?table[0]->count():0)
1.31 paf 482: for(int column=0; column<lsize; column++) {
1.182 paf 483: char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];
484: sdata.append_know_length(cindex_tab,
1.185 paf 485: snprintf(cindex_tab, MAX_NUMBER,
1.206 paf 486: column<lsize-1?"%d%c":"%d", column, separators.column),
1.185 paf 487: String::L_CLEAN);
1.31 paf 488: }
489: else
1.182 paf 490: sdata.append_help_length("empty nameless table", 0, String::L_CLEAN);
1.31 paf 491: }
1.182 paf 492: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.188 paf 493: }
1.129 paf 494:
1.31 paf 495: // data lines
1.182 paf 496: Array_iterator<ArrayString*> i(table);
1.98 parser 497: while(i.has_next()) {
1.182 paf 498: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.188 paf 499: maybe_enclose( sdata, *c.next(), separators.encloser, separators.sencloser );
1.98 parser 500: if(c.has_next())
1.206 paf 501: sdata<<*separators.scolumn;
1.31 paf 502: }
1.182 paf 503: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.31 paf 504: }
505:
506: // write
1.217 paf 507: {
508: const char* data_cstr=sdata.cstr();
509: file_write(r.absolute(file_name),
510: data_cstr, sdata.length(), true, do_append);
511: if(*data_cstr) // not empty (when empty it's not heap memory)
512: pa_free((void*)data_cstr); // not needed anymore
513: }
1.22 paf 514: }
1.236 misha 515: */
1.22 paf 516:
1.224 misha 517: static void _save(Request& r, MethodParams& params) {
1.237 misha 518: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.224 misha 519: size_t param_index=1;
520:
521: bool do_append=false;
522: bool output_column_names=true;
523:
524: // mode?
525: if(first_arg=="append")
526: do_append=true;
527: else if(first_arg=="nameless")
528: output_column_names=false;
529: else
530: --param_index;
531:
1.232 misha 532: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.224 misha 533:
534: TableSeparators separators;
535: if(param_index<params.count()) {
536: Value& voptions=params.as_no_junction(param_index++, "additional params must be hash");
537: if( voptions.is_defined() && !voptions.is_string() ) {
538: if(HashStringValue* options=voptions.get_hash()) {
539: int valid_options=separators.load(*options);
540: if(valid_options!=options->count())
1.226 misha 541: throw Exception(PARSER_RUNTIME,
1.224 misha 542: 0,
543: "invalid option passed");
544: } else {
1.226 misha 545: throw Exception(PARSER_RUNTIME,
1.224 misha 546: 0,
547: "additional params must be hash (did you spell mode parameter correctly?)");
548: }
549: }
550: }
551: if(param_index<params.count())
1.226 misha 552: throw Exception(PARSER_RUNTIME,
1.224 misha 553: 0,
554: "bad mode (must be nameless or append)");
555:
556: Table& table=GET_SELF(r, VTable).table();
557:
558: ostringstream ost(stringstream::out);
559:
560: // process header
561: if(output_column_names) {
562: if(table.columns()) { // named table
563: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
564: maybe_enclose( ost, *i.next(), separators.encloser );
565: if(i.has_next()){
566: ost<<separators.column;
567: }
568: }
569: } else { // nameless table [we were asked to output column names]
570: if(int lsize=table.count()?table[0]->count():0)
571: for(int column=0; column<lsize; column++) {
1.225 misha 572: if(separators.encloser) {
573: ost<<separators.encloser<<column<<separators.encloser;
574: } else {
1.239 ! misha 575: ost<<column;
1.225 misha 576: }
1.224 misha 577: if(column<lsize-1){
578: ost<<separators.column;
579: }
580: }
581: else
582: ost<<"empty nameless table";
583: }
584: ost<<'\n';
585: }
586:
587: // process data lines
588: Array_iterator<ArrayString*> i(table);
589: while(i.has_next()) {
590: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
591: maybe_enclose( ost, *c.next(), separators.encloser );
592: if(c.has_next())
593: ost<<separators.column;
594: }
595: ost<<'\n';
596: }
597:
598: // write
599: {
600: string data=ost.str();
601: const char* data_cstr = data.c_str();
602:
603: file_write(r.absolute(file_name), data_cstr, data.length(), true /* as text */, do_append);
604: }
605: }
606:
1.182 paf 607: static void _count(Request& r, MethodParams&) {
608: int result=GET_SELF(r, VTable).table().count();
609: r.write_no_lang(*new VInt(result));
1.6 paf 610: }
611:
1.182 paf 612: static void _line(Request& r, MethodParams&) {
613: int result=1+GET_SELF(r, VTable).table().current();
614: r.write_no_lang(*new VInt(result));
1.6 paf 615: }
616:
1.182 paf 617: static void _offset(Request& r, MethodParams& params) {
618: Table& table=GET_SELF(r, VTable).table();
619: if(params.count()) {
1.133 paf 620: bool absolute=false;
1.182 paf 621: if(params.count()>1) {
622: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 623: if(whence=="cur")
1.134 paf 624: absolute=false;
1.133 paf 625: else if(whence=="set")
1.134 paf 626: absolute=true;
1.133 paf 627: else
1.226 misha 628: throw Exception(PARSER_RUNTIME,
1.134 paf 629: &whence,
630: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 631: }
1.133 paf 632:
1.211 paf 633: int offset=params.as_int(params.count()-1, "offset must be expression", r);
634: table.offset(absolute, offset);
1.151 paf 635: } else
1.182 paf 636: r.write_no_lang(*new VInt(table.current()));
1.6 paf 637: }
638:
1.182 paf 639: static void _menu(Request& r, MethodParams& params) {
1.221 paf 640: Temp_hash_value<const String::Body, void*>
641: cycle_data_setter(r.classes_conf, cycle_data_name, /*any not null flag*/&r);
642:
1.182 paf 643: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 644:
1.182 paf 645: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 646:
1.182 paf 647: Table& table=GET_SELF(r, VTable).table();
1.7 paf 648: bool need_delim=false;
1.99 parser 649: int saved_current=table.current();
1.182 paf 650: int size=table.count();
1.99 parser 651: for(int row=0; row<size; row++) {
1.22 paf 652: table.set_current(row);
1.7 paf 653:
1.161 paf 654: StringOrValue sv_processed=r.process(body_code);
1.221 paf 655: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
1.182 paf 656: const String* s_processed=sv_processed.get_string();
657: if(delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body
1.161 paf 658: if(need_delim) // need delim & iteration produced string?
1.150 paf 659: r.write_pass_lang(r.process(*delim_maybe_code));
1.7 paf 660: need_delim=true;
661: }
1.161 paf 662: r.write_pass_lang(sv_processed);
1.221 paf 663:
664: if(lskip==Request::SKIP_BREAK)
665: break;
1.7 paf 666: }
1.99 parser 667: table.set_current(saved_current);
1.7 paf 668: }
669:
1.110 parser 670: #ifndef DOXYGEN
1.74 paf 671: struct Row_info {
1.166 paf 672: Request *r;
1.74 paf 673: Table *table;
1.182 paf 674: Value* key_code;
675: size_t key_field;
676: Array<int>* value_fields;
677: HashStringValue* hash;
1.174 paf 678: Table2hash_distint distinct;
1.182 paf 679: size_t row;
1.227 misha 680: Table2hash_value_type value_type;
1.74 paf 681: };
1.110 parser 682: #endif
1.182 paf 683: static void table_row_to_hash(Table::element_type row, Row_info *info) {
684: const String* key;
685: if(info->key_code) {
686: info->table->set_current(info->row++); // change context row
687: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 688: key=&sv_processed.as_string();
1.227 misha 689: } else {
1.182 paf 690: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 691: }
1.166 paf 692:
693: if(!key)
694: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 695:
1.227 misha 696: bool exist = false;
697: switch (info->value_type) {
698: case C_STRING:
699: {
700: exist=info->hash->put_dont_replace(*key, new VString(*row->get(info->value_fields->get(0))));
701: }
702: break;
703: case C_HASH:
1.174 paf 704: {
1.182 paf 705: VHash* vhash=new VHash;
706: HashStringValue& hash=vhash->hash();
707: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
708: size_t value_field=i.next();
709: if(value_field<row->count())
1.174 paf 710: hash.put(
1.182 paf 711: *info->table->columns()->get(value_field),
712: new VString(*row->get(value_field)));
1.174 paf 713: }
714:
1.227 misha 715: exist=info->hash->put_dont_replace(*key, vhash);
1.174 paf 716: }
717: break;
1.227 misha 718: case C_TABLE:
1.174 paf 719: {
1.182 paf 720: VTable* vtable=(VTable*)info->hash->get(*key); // put. table existed?
1.227 misha 721: if( info->distinct==D_ILLEGAL ){
722: exist=true;
723: break;
724: }
725:
1.174 paf 726: Table* table;
1.227 misha 727: if(vtable) {
1.174 paf 728: table=vtable->get_table();
1.227 misha 729: } else {
1.174 paf 730: // no? creating table of same structure as source
1.179 paf 731: Table::Action_options table_options(0, 0);
1.182 paf 732: table=new Table(*info->table, table_options/*no rows, just structure*/);
733: info->hash->put(*key, new VTable(table));
1.174 paf 734: }
1.182 paf 735: *table+=row;
1.174 paf 736: }
737: break;
1.74 paf 738: }
1.227 misha 739: if(exist && info->distinct==D_ILLEGAL)
740: throw Exception(PARSER_RUNTIME,
741: key,
742: "duplicate key");
1.74 paf 743: }
1.235 misha 744:
745: Table2hash_value_type get_value_type(Value& vvalue_type){
746: if(vvalue_type.is_string()) {
747: const String& svalue_type=*vvalue_type.get_string();
748: if(svalue_type == "table"){
749: return C_TABLE;
750: } else if (svalue_type == "string") {
751: return C_STRING;
752: } else if (svalue_type == "hash") {
753: return C_HASH;
754: } else {
755: throw Exception(PARSER_RUNTIME,
756: &svalue_type,
757: "must be 'hash', 'table' or 'string'");
758: }
759: } else {
760: throw Exception(PARSER_RUNTIME,
761: 0,
762: "'type' must be hash");
763: }
764: }
765:
1.182 paf 766: static void _hash(Request& r, MethodParams& params) {
767: Table& self_table=GET_SELF(r, VTable).table();
768: VHash& result=*new VHash;
1.238 misha 769: if(Table::columns_type columns=self_table.columns()){
1.182 paf 770: if(columns->count()>0) {
1.174 paf 771: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 772: Table2hash_value_type value_type=C_HASH;
1.182 paf 773: int param_index=params.count()-1;
1.166 paf 774: if(param_index>0) {
1.238 misha 775: if(HashStringValue* options=params.as_no_junction(param_index, PARAM_MUST_NOT_BE_CODE).get_hash()){ // options where specified
1.166 paf 776: --param_index;
777: int valid_options=0;
1.238 misha 778: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 779: valid_options++;
1.174 paf 780: Value& vdistinct_value=r.process_to_value(*vdistinct_code);
781: if(vdistinct_value.is_string()) {
782: const String& sdistinct=*vdistinct_value.get_string();
1.227 misha 783: if(sdistinct=="tables") {
784: value_type=C_TABLE;
785: distinct=D_FIRST;
1.238 misha 786: } else {
1.226 misha 787: throw Exception(PARSER_RUNTIME,
1.174 paf 788: &sdistinct,
789: "must be 'tables' or true/false");
1.238 misha 790: }
791: } else {
1.174 paf 792: distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
1.238 misha 793: }
1.166 paf 794: }
1.238 misha 795: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
796: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.227 misha 797: throw Exception(PARSER_RUNTIME,
798: 0,
1.238 misha 799: "you can't specify $.distinct[tables] and $.type[] together");
800:
801: valid_options++;
802: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
803: }
1.226 misha 804:
1.182 paf 805: if(valid_options!=options->count())
1.226 misha 806: throw Exception(PARSER_RUNTIME,
1.182 paf 807: 0,
1.166 paf 808: "called with invalid option");
1.163 paf 809: }
810: }
1.238 misha 811:
812: if(param_index==2) // options was specified but not as hash
1.226 misha 813: throw Exception(PARSER_RUNTIME,
1.182 paf 814: 0,
1.163 paf 815: "options must be hash");
816:
1.182 paf 817: Array<int> value_fields;
1.238 misha 818: if(param_index==0){ // list of columns wasn't specified
819: if(value_type==C_STRING) // $.type[string]
820: throw Exception(PARSER_RUNTIME,
821: 0,
822: "you must specify one value field with option $.type[string]");
823:
824: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
825: value_fields+=i;
826:
827: } else { // list of columns was specified
1.227 misha 828: if(value_type==C_TABLE)
829: throw Exception(PARSER_RUNTIME,
1.174 paf 830: 0,
1.238 misha 831: "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
832:
1.182 paf 833: Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
1.238 misha 834: if(value_fields_param.is_string()) { // one column as string was specified
835: value_fields+=self_table.column_name2index(*value_fields_param.get_string(), true);
836: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
837: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
838: const String& value_field_name =*i.next()->get(0);
839: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 840: }
841: } else
1.226 misha 842: throw Exception(PARSER_RUNTIME,
1.182 paf 843: 0,
1.226 misha 844: "value field(s) must be string or table");
1.239 ! misha 845: }
1.74 paf 846:
1.227 misha 847: if(value_type==C_STRING && value_fields.count()!=1)
848: throw Exception(PARSER_RUNTIME,
849: 0,
1.238 misha 850: "you can specify only one value field with option $.type[string]");
1.182 paf 851:
852: {
853: Value* key_param=¶ms[0];
1.193 paf 854: Row_info info={
855: &r,
856: &self_table,
857: /*key_code=*/key_param->get_junction()?key_param:0,
1.197 paf 858: /*key_field=*/0/*filled below*/,
1.193 paf 859: &value_fields,
860: &result.hash(),
861: distinct,
1.227 misha 862: /*row=*/0,
863: value_type
1.193 paf 864: };
1.195 paf 865: info.key_field=(info.key_code?-1
866: :self_table.column_name2index(key_param->as_string(), true));
1.182 paf 867:
868: int saved_current=self_table.current();
869: self_table.for_each(table_row_to_hash, &info);
870: self_table.set_current(saved_current);
1.207 paf 871:
872: result.extract_default();
1.182 paf 873: }
1.74 paf 874: }
1.238 misha 875: }
1.97 parser 876: r.write_no_lang(result);
1.74 paf 877: }
878:
1.110 parser 879: #ifndef DOXYGEN
1.78 paf 880: struct Table_seq_item {
1.182 paf 881: ArrayString* row;
1.34 paf 882: union {
1.182 paf 883: const char *c_str;
1.34 paf 884: double d;
885: } value;
1.32 paf 886: };
1.110 parser 887: #endif
1.34 paf 888: static int sort_cmp_string(const void *a, const void *b) {
889: return strcmp(
1.78 paf 890: static_cast<const Table_seq_item *>(a)->value.c_str,
891: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 892: );
893: }
894: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 895: double va=static_cast<const Table_seq_item *>(a)->value.d;
896: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 897: if(va<vb)
898: return -1;
899: else if(va>vb)
900: return +1;
901: else
902: return 0;
903: }
1.182 paf 904: static void _sort(Request& r, MethodParams& params) {
905: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 906:
1.182 paf 907: bool reverse=params.count()>1/*..[desc|asc|]*/?
908: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 909: false; // default=asc
1.32 paf 910:
1.182 paf 911: Table& old_table=GET_SELF(r, VTable).table();
912: Table& new_table=*new Table(old_table.columns());
1.34 paf 913:
1.182 paf 914: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 915: int i;
916:
917: // calculate key values
918: bool key_values_are_strings=true;
1.182 paf 919: int old_count=old_table.count();
920: for(i=0; i<old_count; i++) {
1.101 parser 921: old_table.set_current(i);
1.32 paf 922: // calculate key value
1.182 paf 923: seq[i].row=old_table[i];
924: Value& value=r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/);
1.34 paf 925: if(i==0) // determining key values type by first one
926: key_values_are_strings=value.is_string();
927:
928: if(key_values_are_strings)
929: seq[i].value.c_str=value.as_string().cstr();
930: else
931: seq[i].value.d=value.as_double();
1.32 paf 932: }
933: // sort keys
1.182 paf 934: _qsort(seq, old_count, sizeof(Table_seq_item),
1.34 paf 935: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 936:
1.34 paf 937: // reorder table as they require in 'seq'
1.182 paf 938: for(i=0; i<old_count; i++)
939: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
940:
941: delete[] seq;
1.32 paf 942:
1.116 parser 943: // replace any previous table value
1.182 paf 944: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 945: }
946:
1.176 paf 947: #ifndef DOXYGEN
1.182 paf 948: struct Expression_is_true_info {
1.176 paf 949: Request* r;
950: Value* expression_code;
951: };
952: #endif
1.191 paf 953: static bool expression_is_true(Table&, Expression_is_true_info* info) {
954: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 955: }
956: static bool _locate_expression(Table& table, Table::Action_options o,
1.182 paf 957: Request& r, MethodParams& params) {
958: check_option_param(o.defined, params, 1,
1.176 paf 959: "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 960: Value& expression_code=params.as_junction(0, "must be expression");
1.145 paf 961:
1.182 paf 962: Expression_is_true_info info={&r, &expression_code};
963: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 964: }
1.176 paf 965: static bool _locate_name_value(Table& table, Table::Action_options o,
1.191 paf 966: Request&, MethodParams& params) {
1.182 paf 967: check_option_param(o.defined, params, 2,
1.176 paf 968: "locate by locate by name has parameters: name, value and, maybe, options");
1.182 paf 969: const String& name=params.as_string(0, "column name must be string");
1.232 misha 970: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.182 paf 971: return table.locate(name, value, o);
972: }
973: static void _locate(Request& r, MethodParams& params) {
974: Table& table=GET_SELF(r, VTable).table();
1.72 paf 975:
1.182 paf 976: Table::Action_options o=get_action_options(r, params, table);
977:
978: bool result=params[0].get_junction()?
979: _locate_expression(table, o, r, params) :
980: _locate_name_value(table, o, r, params);
981: r.write_no_lang(*new VBool(result));
1.145 paf 982: }
1.182 paf 983:
984:
1.191 paf 985: static void _flip(Request& r, MethodParams&) {
1.182 paf 986: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 987: Table& new_table=*new Table(0);
1.182 paf 988: if(size_t old_count=old_table.count())
989: if(size_t old_cols=old_table[0]->count())
990: for(size_t column=0; column<old_cols; column++) {
991: Table::element_type new_row(new ArrayString(old_count));
992: for(size_t i=0; i<old_count; i++) {
993: Table::element_type old_row=old_table[i];
994: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 995: }
1.182 paf 996: new_table+=new_row;
1.39 paf 997: }
998:
1.182 paf 999: r.write_no_lang(*new VTable(&new_table));
1.39 paf 1000: }
1001:
1.182 paf 1002: static void _append(Request& r, MethodParams& params) {
1.134 paf 1003: // data
1.182 paf 1004: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1005: const String& string=r.process_to_string(params.as_junction(0, "body must be code"));
1.41 paf 1006:
1007: // parse cells
1.182 paf 1008: Table::element_type row=new ArrayString;
1009: size_t pos_after=0;
1010: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 1011:
1.182 paf 1012: GET_SELF(r, VTable).table()+=row;
1.41 paf 1013: }
1014:
1.182 paf 1015: static void join_named_row(Table& src, Table* dest) {
1016: Table::columns_type dest_columns=dest->columns();
1017: size_t dest_columns_count=dest_columns->count();
1018: Table::element_type dest_row(new ArrayString(dest_columns_count));
1019: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1020: const String* src_item=src.item(*dest_columns->get(dest_column));
1021: *dest_row+=src_item?src_item:new String;
1022: }
1023: *dest+=dest_row;
1024: }
1025: static void join_nameless_row(Table& src, Table* dest) {
1026: *dest+=src[src.current()];
1027: }
1028: static void _join(Request& r, MethodParams& params) {
1029: Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 1030: if(!maybe_src)
1.226 misha 1031: throw Exception(PARSER_RUNTIME,
1.182 paf 1032: 0,
1.42 paf 1033: "source is not a table");
1.176 paf 1034: Table& src=*maybe_src;
1035:
1.182 paf 1036: Table::Action_options o=get_action_options(r, params, src);
1037: check_option_param(o.defined, params, 1,
1.176 paf 1038: "invalid extra parameter");
1.42 paf 1039:
1.182 paf 1040: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1041: if(&src == &dest)
1.226 misha 1042: throw Exception(PARSER_RUNTIME,
1.182 paf 1043: 0,
1.42 paf 1044: "source and destination are same table");
1045:
1.193 paf 1046: if(dest.columns()) // dest is named
1.182 paf 1047: src.table_for_each(join_named_row, &dest, o);
1048: else // dest is nameless
1049: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1050: }
1051:
1.94 parser 1052: #ifndef DOXYGEN
1.169 paf 1053: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1054: ArrayString& columns;
1.218 paf 1055: int columns_count;
1.182 paf 1056: ArrayString* row;
1.94 parser 1057: public:
1.182 paf 1058: Table* table;
1059: public:
1060: Table_sql_event_handlers() :
1061: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1062: }
1063:
1.182 paf 1064: bool add_column(SQL_Error& error, const char *str, size_t length) {
1.170 paf 1065: try {
1.182 paf 1066: columns+=new String(str, length, true);
1.170 paf 1067: return false;
1068: } catch(...) {
1069: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1070: return true;
1071: }
1072: }
1073: bool before_rows(SQL_Error& error) {
1074: try {
1.182 paf 1075: table=new Table(&columns);
1.218 paf 1076: columns_count=columns.count();
1.170 paf 1077: return false;
1078: } catch(...) {
1079: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1080: return true;
1081: }
1082: }
1083: bool add_row(SQL_Error& error) {
1084: try {
1.218 paf 1085: *table+=row=new ArrayString(columns_count);
1.170 paf 1086: return false;
1087: } catch(...) {
1088: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1089: return true;
1090: }
1091: }
1.182 paf 1092: bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
1.170 paf 1093: try {
1.182 paf 1094: String& cell=*new String;
1095: if(length)
1096: cell.append_know_length(str, length, String::L_TAINTED);
1097: *row+=&cell;
1.170 paf 1098: return false;
1099: } catch(...) {
1100: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1101: return true;
1102: }
1.94 parser 1103: }
1104: };
1105: #endif
1.204 paf 1106:
1107: static void marshal_bind(
1108: HashStringValue::key_type aname,
1109: HashStringValue::value_type avalue,
1110: SQL_Driver::Placeholder** pptr)
1111: {
1112: SQL_Driver::Placeholder& ph=**pptr;
1113: ph.name=aname.cstr();
1.205 paf 1114: ph.value=avalue->as_string().cstr(String::L_UNSPECIFIED);
1.204 paf 1115: ph.is_null=avalue->get_class()==void_class;
1116: ph.were_updated=false;
1117:
1118: (*pptr)++;
1119: }
1120:
1121: // not static, used elsewhere
1122: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1123: int hash_count=hash.count();
1124: placeholders=new(UseGC) SQL_Driver::Placeholder[hash_count];
1125: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1126: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1127: return hash_count;
1128: }
1129:
1130: // not static, used elsewhere
1131: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1132: SQL_Driver::Placeholder* ph=placeholders;
1133: for(int i=0; i<placeholder_count; i++, ph++)
1134: if(ph->were_updated) {
1135: Value* value;
1136: if(ph->is_null)
1137: value=new VVoid();
1138: else
1139: if(ph->value)
1140: value=new VString(*new String(ph->value, 0, true/*tainted*/));
1141: else
1142: value=new VString(*new String());
1143: hash.put(ph->name, value);
1144: }
1145: }
1146:
1.182 paf 1147: static void _sql(Request& r, MethodParams& params) {
1148: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1149:
1.204 paf 1150: HashStringValue* bind=0;
1.53 paf 1151: ulong limit=0;
1.100 parser 1152: ulong offset=0;
1.182 paf 1153: if(params.count()>1) {
1154: Value& voptions=params.as_no_junction(1, "options must be hash, not code");
1.212 paf 1155: if(voptions.is_defined() && !voptions.is_string())
1.182 paf 1156: if(HashStringValue* options=voptions.get_hash()) {
1.164 paf 1157: int valid_options=0;
1.204 paf 1158: if(Value* vbind=options->get(sql_bind_name)) {
1159: valid_options++;
1160: bind=vbind->get_hash();
1161: }
1.182 paf 1162: if(Value* vlimit=options->get(sql_limit_name)) {
1.164 paf 1163: valid_options++;
1.147 paf 1164: limit=(ulong)r.process_to_value(*vlimit).as_double();
1.164 paf 1165: }
1.182 paf 1166: if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 1167: valid_options++;
1.147 paf 1168: offset=(ulong)r.process_to_value(*voffset).as_double();
1.164 paf 1169: }
1.182 paf 1170: if(valid_options!=options->count())
1.226 misha 1171: throw Exception(PARSER_RUNTIME,
1.182 paf 1172: 0,
1.164 paf 1173: "called with invalid option");
1.109 parser 1174: } else
1.226 misha 1175: throw Exception(PARSER_RUNTIME,
1.182 paf 1176: 0,
1.109 parser 1177: "options must be hash");
1.49 paf 1178: }
1179:
1.204 paf 1180: SQL_Driver::Placeholder* placeholders=0;
1181: uint placeholders_count=0;
1182: if(bind)
1183: placeholders_count=marshal_binds(*bind, placeholders);
1184:
1.182 paf 1185: Temp_lang temp_lang(r, String::L_SQL);
1186: const String& statement_string=r.process_to_string(statement);
1187: const char* statement_cstr=
1188: statement_string.cstr(String::L_UNSPECIFIED, r.connection());
1189: Table_sql_event_handlers handlers;
1.135 paf 1190: #ifdef RESOURCES_DEBUG
1191: struct timeval mt[2];
1192: //measure:before
1193: gettimeofday(&mt[0],NULL);
1194: #endif
1.182 paf 1195: r.connection()->query(
1.203 paf 1196: statement_cstr,
1.208 paf 1197: placeholders_count, placeholders,
1.203 paf 1198: offset, limit,
1.160 paf 1199: handlers,
1200: statement_string);
1.135 paf 1201:
1202: #ifdef RESOURCES_DEBUG
1203: //measure:after connect
1204: gettimeofday(&mt[1],NULL);
1205:
1206: double t[2];
1207: for(int i=0;i<2;i++)
1208: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
1209:
1210: r.sql_request_time+=t[1]-t[0];
1211: #endif
1.204 paf 1212:
1213: if(bind)
1214: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1215:
1.182 paf 1216: Table& result=
1217: handlers.table?*handlers.table: // query resulted in table? return it
1218: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1219:
1220: // replace any previous table value
1.182 paf 1221: GET_SELF(r, VTable).set_table(result);
1.49 paf 1222: }
1223:
1.233 misha 1224: static void _columns(Request& r, MethodParams& params) {
1225: const String* column_column_name;
1226: if(params.count()>0)
1227: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1228: else
1229: column_column_name=new String("column");
1.88 parser 1230:
1.182 paf 1231: Table::columns_type result_columns(new ArrayString);
1.233 misha 1232: *result_columns+=column_column_name;
1.182 paf 1233: Table& result_table=*new Table(result_columns);
1.88 parser 1234:
1.182 paf 1235: Table& source_table=GET_SELF(r, VTable).table();
1236: if(Table::columns_type source_columns=source_table.columns()) {
1237: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1238: Table::element_type result_row(new ArrayString);
1239: *result_row+=i.next();
1240: result_table+=result_row;
1.88 parser 1241: }
1242: }
1243:
1.182 paf 1244: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1245: }
1246:
1.182 paf 1247: static void _select(Request& r, MethodParams& params) {
1.231 misha 1248: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1249:
1.182 paf 1250: Table& source_table=GET_SELF(r, VTable).table();
1251: Table& result_table=*new Table(source_table.columns());
1.148 paf 1252:
1253: int saved_current=source_table.current();
1.182 paf 1254: int size=source_table.count();
1.148 paf 1255: for(int row=0; row<size; row++) {
1256: source_table.set_current(row);
1257:
1.150 paf 1258: bool condition=r.process_to_value(vcondition,
1.148 paf 1259: false/*don't intercept string*/).as_bool();
1260:
1261: if(condition) // ...condition is true=
1.182 paf 1262: result_table+=source_table[row]; // =green light to go to result
1.148 paf 1263: }
1264: source_table.set_current(saved_current);
1265:
1.182 paf 1266: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1267: }
1268:
1.66 paf 1269: // constructor
1270:
1.182 paf 1271: MTable::MTable(): Methoded("table") {
1.142 paf 1272: // ^table::create{data}
1273: // ^table::create[nameless]{data}
1274: // ^table::create[table]
1.236 misha 1275: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1276: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1277: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1278:
1.142 paf 1279: // ^table::load[file]
1280: // ^table::load[nameless;file]
1.168 paf 1281: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1282:
1283: // ^table.save[file]
1284: // ^table.save[nameless;file]
1.188 paf 1285: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1286:
1.224 misha 1287: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1288:
1.6 paf 1289: // ^table.count[]
1.66 paf 1290: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 1291:
1292: // ^table.line[]
1.66 paf 1293: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1294:
1.10 paf 1295: // ^table.offset[]
1.133 paf 1296: // ^table.offset(offset)
1297: // ^table.offset[cur|set](offset)
1298: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1299:
1.10 paf 1300: // ^table.menu{code}
1301: // ^table.menu{code}[delim]
1.66 paf 1302: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1303:
1.239 ! misha 1304: // ^table.hash[key field name]
! 1305: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1306: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1307:
1.102 parser 1308: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1309: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1310: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1311:
1.36 paf 1312: // ^table.locate[field;value]
1.176 paf 1313: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1314:
1315: // ^table.flip[]
1.66 paf 1316: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1317:
1318: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 1319: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1320:
1.157 paf 1321: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1322: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1323:
1324:
1.239 ! misha 1325: // ^table::sql[query]
! 1326: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1327: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1328:
1.239 ! misha 1329: // ^table.columns[[column name]]
1.233 misha 1330: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1331:
1332: // ^table.select(expression) = table
1333: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.40 paf 1334: }
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