Annotation of parser3/src/classes/table.C, revision 1.267
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:
1.267 ! misha 8: static const char * const IDENT_TABLE_C="$Date: 2009-08-31 12:55:01 $";
1.229 misha 9:
1.257 misha 10: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.229 misha 11: #include <sstream>
12: using namespace std;
1.240 misha 13: #endif
1.1 paf 14:
1.105 parser 15: #include "classes.h"
1.182 paf 16: #include "pa_vmethod_frame.h"
17:
1.16 paf 18: #include "pa_common.h"
1.1 paf 19: #include "pa_request.h"
1.265 misha 20: #include "pa_charsets.h"
1.1 paf 21: #include "pa_vtable.h"
1.6 paf 22: #include "pa_vint.h"
1.51 paf 23: #include "pa_sql_connection.h"
1.72 paf 24: #include "pa_vbool.h"
1.1 paf 25:
1.66 paf 26: // class
27:
1.182 paf 28: class MTable: public Methoded {
1.66 paf 29: public: // VStateless_class
1.264 misha 30: Value* create_new_value(Pool&) { return new VTable(); }
1.66 paf 31:
32: public:
1.182 paf 33: MTable();
1.70 paf 34:
35: public: // Methoded
1.66 paf 36: bool used_directly() { return true; }
37: };
1.1 paf 38:
1.182 paf 39: // global variable
40:
41: DECLARE_CLASS_VAR(table, new MTable, 0);
42:
43: #define TABLE_REVERSE_NAME "reverse"
44:
45: // globals
46:
1.203 paf 47: String sql_bind_name(SQL_BIND_NAME);
1.214 paf 48: String sql_limit_name(PA_SQL_LIMIT_NAME);
49: String sql_offset_name(PA_SQL_OFFSET_NAME);
1.182 paf 50: String sql_default_name(SQL_DEFAULT_NAME);
51: String sql_distinct_name(SQL_DISTINCT_NAME);
1.227 misha 52: String sql_value_type_name(SQL_VALUE_TYPE_NAME);
1.182 paf 53: String table_reverse_name(TABLE_REVERSE_NAME);
54:
1.1 paf 55: // methods
1.66 paf 56:
1.182 paf 57: static Table::Action_options get_action_options(Request& r, MethodParams& params,
58: const Table& source) {
1.176 paf 59: Table::Action_options result;
1.182 paf 60: if(!params.count())
61: return result;
62:
63: Value& maybe_options=params.last();
64: /* can not do it:
65: want to enable ^table::create[$source;
66: # $.option[]
67: ]
68: but there is ^table.locate[name;value]
1.176 paf 69:
1.212 paf 70: ...if(voptions.is_defined() && !voptions.is_string()))
1.182 paf 71: if(maybe_options.is_string()) { // allow empty options
72: result.defined=true;
1.176 paf 73: return result;
1.182 paf 74: }
75: */
76: HashStringValue* options=maybe_options.get_hash();
1.176 paf 77: if(!options)
78: return result;
79:
80: result.defined=true;
81: bool defined_offset=false;
82:
83: int valid_options=0;
1.182 paf 84: if(Value* voffset=options->get(sql_offset_name)) {
1.176 paf 85: valid_options++;
86: defined_offset=true;
87: if(voffset->is_string()) {
1.182 paf 88: const String& soffset=*voffset->get_string();
1.176 paf 89: if(soffset == "cur")
90: result.offset=source.current();
91: else
1.226 misha 92: throw Exception(PARSER_RUNTIME,
1.176 paf 93: &soffset,
94: "must be 'cur' string or expression");
95: } else
96: result.offset=r.process_to_value(*voffset).as_int();
97: }
1.182 paf 98: if(Value* vlimit=options->get(sql_limit_name)) {
1.176 paf 99: valid_options++;
100: result.limit=r.process_to_value(*vlimit).as_int();
101: }
1.182 paf 102: if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
103: valid_options++;
104: result.reverse=r.process_to_value(*vreverse).as_bool();
105: if(result.reverse && !defined_offset)
106: result.offset=source.count()-1;
107: }
108:
109: if(valid_options!=options->count())
1.226 misha 110: throw Exception(PARSER_RUNTIME,
1.182 paf 111: 0,
1.176 paf 112: "called with invalid option");
113:
114: return result;
115: }
1.180 paf 116: static void check_option_param(bool options_defined,
1.182 paf 117: MethodParams& params, size_t next_param_index,
1.176 paf 118: const char *msg) {
1.182 paf 119: if(next_param_index+(options_defined?1:0) != params.count())
1.226 misha 120: throw Exception(PARSER_RUNTIME,
1.182 paf 121: 0,
1.176 paf 122: "%s", msg);
1.157 paf 123: }
124:
1.236 misha 125: struct TableSeparators {
126: char column; const String* scolumn;
127: char encloser; const String* sencloser;
128:
129: TableSeparators():
1.254 misha 130: column('\t'), scolumn(new String("\t")),
1.236 misha 131: encloser(0), sencloser(0)
132: {}
133: int load( HashStringValue& options ) {
134: int result=0;
135: if(Value* vseparator=options.get(PA_COLUMN_SEPARATOR_NAME)) {
136: scolumn=&vseparator->as_string();
137: if(scolumn->length()!=1)
138: throw Exception(PARSER_RUNTIME,
139: scolumn,
140: "separator must be one character long");
141: column=scolumn->first_char();
142: result++;
143: }
144: if(Value* vencloser=options.get(PA_COLUMN_ENCLOSER_NAME)) {
145: sencloser=&vencloser->as_string();
146: if(sencloser->length()!=1)
147: throw Exception(PARSER_RUNTIME,
148: sencloser,
149: "encloser must be one character long");
150: encloser=sencloser->first_char();
151: result++;
152: }
153: return result;
154: }
155: };
156:
1.182 paf 157: static void _create(Request& r, MethodParams& params) {
1.157 paf 158: // clone/copy part?
1.182 paf 159: if(Table *source=params[0].get_table()) {
160: Table::Action_options o=get_action_options(r, params, *source);
161: check_option_param(o.defined, params, 1,
1.176 paf 162: "too many parameters");
1.182 paf 163: GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 164: return;
165: }
1.142 paf 166:
1.236 misha 167: size_t data_param_index=0;
168: bool nameless=false;
169:
170: if(params.count()>1) {
171: if(params[0].is_string()){ // can be nameless only
172: const String& snameless=params.as_string(0, "called with more then 1 param, first param may be only string 'nameless' or junction");
173: if(snameless!="nameless")
174: throw Exception(PARSER_RUNTIME,
175: &snameless,
176: "table::create called with more then 1 param, first param may be only 'nameless'");
177: nameless=true;
178: data_param_index++;
179: }
180: }
181:
182: HashStringValue *options=0;
183: TableSeparators separators;
184:
185: size_t options_param_index=data_param_index+1;
186: if(
187: options_param_index<params.count()
188: && (options=params.as_no_junction(options_param_index, "additional params must be hash").get_hash())
189: ) {
190: // cloning, so that we could change
191: options=new HashStringValue(*options);
192: separators.load(*options);
193: if(separators.encloser){
194: throw Exception(PARSER_RUNTIME,
195: 0,
196: "encloser not supported for table::create yet");
197: }
198: }
199:
200: // data
1.182 paf 201: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
202: const String& data=
1.236 misha 203: r.process_to_string(params.as_junction(data_param_index, "body must be code"));
1.44 paf 204:
205: // parse columns
1.182 paf 206: size_t raw_pos_after=0;
207: Table::columns_type columns;
1.236 misha 208:
209: if(nameless){
1.182 paf 210: columns=Table::columns_type(0); // nameless
1.21 paf 211: } else {
1.182 paf 212: columns=Table::columns_type(new ArrayString);
1.44 paf 213:
1.182 paf 214: ArrayString head;
215: data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);
216: if(head.count()) {
217: size_t col_pos_after=0;
1.236 misha 218: head[0]->split(*columns, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 219: }
1.44 paf 220: }
221:
1.182 paf 222: Table& table=*new Table(columns);
1.44 paf 223: // parse cells
1.182 paf 224:
225: ArrayString rows;
226: data.split(rows, raw_pos_after, "\n", String::L_AS_IS);
227: Array_iterator<const String*> i(rows);
1.98 parser 228: while(i.has_next()) {
1.182 paf 229: Table::element_type row(new ArrayString);
1.252 misha 230: const String& string=*i.next();
1.118 parser 231: // remove comment lines
1.252 misha 232: if(string.is_empty())
1.44 paf 233: continue;
234:
1.182 paf 235: size_t col_pos_after=0;
1.236 misha 236: string.split(*row, col_pos_after, *separators.scolumn, String::L_AS_IS);
1.182 paf 237: table+=row;
1.17 paf 238: }
1.1 paf 239:
1.44 paf 240: // replace any previous table value
1.182 paf 241: GET_SELF(r, VTable).set_table(table);
1.44 paf 242: }
243:
1.187 paf 244: struct lsplit_result {
245: char* piece;
246: char delim;
247:
248: operator bool() { return piece!=0; }
249: };
250:
251: inline lsplit_result lsplit(char* string, char delim1, char delim2) {
252: lsplit_result result;
253: if(string) {
254: char delims[]={delim1, delim2, 0};
255: if(char* v=strpbrk(string, delims)) {
256: result.delim=*v;
257: *v=0;
258: result.piece=v+1;
259: return result;
260: }
261: }
262: result.piece=0;
263: result.delim=0;
264: return result;
265: }
266:
267: inline lsplit_result lsplit(char* *string_ref, char delim1, char delim2) {
268: lsplit_result result;
269: result.piece=*string_ref;
270: lsplit_result next=lsplit(*string_ref, delim1, delim2);
271: result.delim=next.delim;
272: *string_ref=next.piece;
273: return result;
274: }
275:
276: static lsplit_result lsplit(char** string_ref, char delim1, char delim2, char encloser) {
277: lsplit_result result;
278:
279: if(char* string=*string_ref) {
280: if(encloser && *string==encloser) {
281: string++;
282:
283: char *read;
284: char *write;
285: write=read=string;
286: char c;
1.193 paf 287: while((c=*read++)) {
1.187 paf 288: if(c==encloser) {
289: char n=*read;
290: if(n==encloser) // double-encloser stands for encloser
291: read++;
292: else if(n==delim1 || n==delim2) {
293: result.delim=n;
294: read++;
295: break;
296: }
297: }
298:
299: *write++=c;
300: }
301: *write=0; // terminate
302: *string_ref=c? read: 0;
303: result.piece=string;
304: return result;
305: } else
306: return lsplit(string_ref, delim1, delim2);
307: }
308: result.piece=0;
309: return result;
310: }
311:
312: static void skip_empty_and_comment_lines( char** data_ref ) {
313: if(char *data=*data_ref) {
314: while( char c=*data ) {
315: if( c== '\n' || c == '#' ) {
316: /*nowhere=*/getrow(&data); // remove empty&comment lines
1.199 paf 317: if(!(*data_ref=data))
318: break;
1.187 paf 319: continue;
320: }
321: break;
322: }
323: }
324: }
325:
1.182 paf 326: static void _load(Request& r, MethodParams& params) {
1.232 misha 327: const String& first_param=params.as_string(0, FILE_NAME_MUST_BE_STRING);
1.168 paf 328: int filename_param_index=0;
329: bool nameless=first_param=="nameless";
330: if(nameless)
331: filename_param_index++;
1.182 paf 332: size_t options_param_index=filename_param_index+1;
1.186 paf 333:
334: HashStringValue *options=0;
1.187 paf 335: TableSeparators separators;
1.186 paf 336: if(options_param_index<params.count()
337: && (options=params.as_no_junction(options_param_index, "additional params must be hash").get_hash())) {
338: // cloning, so that we could change [to simplify checks on params inside file_read_text
339: options=new HashStringValue(*options);
1.187 paf 340: separators.load(*options);
1.186 paf 341: }
342:
1.44 paf 343: // loading text
1.247 misha 344: char *data=file_load_text(r,
1.232 misha 345: r.absolute(params.as_string(filename_param_index, FILE_NAME_MUST_BE_STRING)),
1.168 paf 346: true,
1.186 paf 347: options
1.168 paf 348: );
1.44 paf 349:
1.1 paf 350: // parse columns
1.182 paf 351: Table::columns_type columns;
1.168 paf 352: if(nameless) {
1.182 paf 353: columns=Table::columns_type(0); // nameless
1.1 paf 354: } else {
1.182 paf 355: columns=Table::columns_type(new ArrayString);
1.1 paf 356:
1.187 paf 357: skip_empty_and_comment_lines(&data);
358: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.256 misha 359: *columns+=new String(sr.piece, String::L_TAINTED);
1.187 paf 360: if(sr.delim=='\n')
361: break;
1.139 paf 362: }
1.1 paf 363: }
1.187 paf 364:
365: Table& table=*new Table(columns);
1.219 paf 366: int columns_count=columns? columns->count(): 0;
1.1 paf 367:
368: // parse cells
1.218 paf 369: Table::element_type row(new ArrayString(columns_count));
1.187 paf 370: skip_empty_and_comment_lines(&data);
371: while( lsplit_result sr=lsplit(&data, separators.column, '\n', separators.encloser) ) {
1.201 paf 372: if(!*sr.piece && !sr.delim && !row->count()) // append last empty column [if without \n]
373: break;
1.256 misha 374: *row+=new String(sr.piece, String::L_TAINTED);
1.187 paf 375: if(sr.delim=='\n') {
376: table+=row;
1.218 paf 377: row=new ArrayString(columns_count);
1.187 paf 378: skip_empty_and_comment_lines(&data);
1.1 paf 379: }
1.187 paf 380: }
381: // last line [if without \n]
382: if(row->count())
1.1 paf 383: table+=row;
1.187 paf 384:
1.1 paf 385: // replace any previous table value
1.182 paf 386: GET_SELF(r, VTable).set_table(table);
1.1 paf 387: }
1.2 paf 388:
1.257 misha 389: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.241 misha 390:
1.257 misha 391: void maybe_enclose( ostringstream& to, const String& from, char encloser ) {
1.188 paf 392: if(encloser) {
1.257 misha 393: to<<encloser;
1.188 paf 394: // while we have 'encloser'...
1.189 paf 395: size_t pos_after=0;
1.220 paf 396: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
397: pos_before++; // including first encloser (and skipping it for next pos)
1.257 misha 398: to<<from.mid(pos_after, pos_before).cstr();
399: to<<encloser; // doubling encloser
1.188 paf 400: }
401: // last piece
402: size_t from_length=from.length();
403: if(pos_after<from_length)
1.257 misha 404: to<<from.mid(pos_after, from_length).cstr();
1.188 paf 405:
1.257 misha 406: to<<encloser;
1.188 paf 407: } else
1.257 misha 408: to<<from.cstr();
1.188 paf 409: }
410:
1.241 misha 411: #else
412:
1.257 misha 413: void maybe_enclose( String& to, const String& from, char encloser, const String* sencloser ) {
1.224 misha 414: if(encloser) {
1.257 misha 415: to<<*sencloser;
1.224 misha 416: // while we have 'encloser'...
417: size_t pos_after=0;
418: for( size_t pos_before; (pos_before=from.pos( encloser, pos_after ))!=STRING_NOT_FOUND; pos_after=pos_before) {
419: pos_before++; // including first encloser (and skipping it for next pos)
1.257 misha 420: to<<from.mid(pos_after, pos_before);
421: to<<*sencloser; // doubling encloser
1.224 misha 422: }
423: // last piece
424: size_t from_length=from.length();
425: if(pos_after<from_length)
1.257 misha 426: to<<from.mid(pos_after, from_length);
1.224 misha 427:
1.257 misha 428: to<<*sencloser;
1.224 misha 429: } else
1.257 misha 430: to<<from;
1.224 misha 431: }
432:
1.257 misha 433: #endif // don't use stringstream
1.241 misha 434:
435: static void _save(Request& r, MethodParams& params) {
1.237 misha 436: const String& first_arg=params.as_string(0, FIRST_ARG_MUST_NOT_BE_CODE);
1.188 paf 437: size_t param_index=1;
438:
439: bool do_append=false;
440: bool output_column_names=true;
441:
442: // mode?
443: if(first_arg=="append")
444: do_append=true;
445: else if(first_arg=="nameless")
446: output_column_names=false;
447: else
448: --param_index;
449:
1.232 misha 450: const String& file_name=params.as_string(param_index++, FILE_NAME_MUST_NOT_BE_CODE);
1.246 misha 451: String file_spec=r.absolute(file_name);
452:
453: if(do_append && file_exist(file_spec))
454: output_column_names=false;
1.188 paf 455:
456: TableSeparators separators;
457: if(param_index<params.count()) {
1.222 paf 458: Value& voptions=params.as_no_junction(param_index++, "additional params must be hash");
459: if( voptions.is_defined() && !voptions.is_string() ) {
460: if(HashStringValue* options=voptions.get_hash()) {
1.223 paf 461: int valid_options=separators.load(*options);
462: if(valid_options!=options->count())
1.226 misha 463: throw Exception(PARSER_RUNTIME,
1.223 paf 464: 0,
1.267 ! misha 465: INVALID_OPTION_PASSED);
1.223 paf 466: } else {
1.226 misha 467: throw Exception(PARSER_RUNTIME,
1.188 paf 468: 0,
1.223 paf 469: "additional params must be hash (did you spell mode parameter correctly?)");
470: }
1.222 paf 471: }
1.188 paf 472: }
473: if(param_index<params.count())
1.226 misha 474: throw Exception(PARSER_RUNTIME,
1.188 paf 475: 0,
476: "bad mode (must be nameless or append)");
1.22 paf 477:
1.182 paf 478: Table& table=GET_SELF(r, VTable).table();
1.31 paf 479:
1.257 misha 480: #if (!defined(NO_STRINGSTREAM) && !defined(FREEBSD4))
1.241 misha 481:
1.257 misha 482: ostringstream ost(stringstream::out);
483:
484: // process header
1.188 paf 485: if(output_column_names) {
1.31 paf 486: if(table.columns()) { // named table
1.182 paf 487: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.257 misha 488: maybe_enclose( ost, *i.next(), separators.encloser );
489: if(i.has_next()){
490: ost<<separators.column;
491: }
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++) {
1.257 misha 496: if(separators.encloser) {
497: ost<<separators.encloser<<column<<separators.encloser;
498: } else {
499: ost<<column;
500: }
501: if(column<lsize-1){
502: ost<<separators.column;
503: }
1.31 paf 504: }
505: else
1.257 misha 506: ost<<"empty nameless table";
1.31 paf 507: }
1.257 misha 508: ost<<'\n';
1.188 paf 509: }
1.129 paf 510:
1.257 misha 511: // process data lines
1.182 paf 512: Array_iterator<ArrayString*> i(table);
1.98 parser 513: while(i.has_next()) {
1.182 paf 514: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.257 misha 515: maybe_enclose( ost, *c.next(), separators.encloser );
1.98 parser 516: if(c.has_next())
1.257 misha 517: ost<<separators.column;
1.31 paf 518: }
1.257 misha 519: ost<<'\n';
1.31 paf 520: }
521:
522: // write
1.217 paf 523: {
1.257 misha 524: string data=ost.str();
525: const char* data_cstr=data.c_str();
526:
1.267 ! misha 527: file_write(r.charsets, file_spec, data_cstr, data.length(), true /* as text */, do_append);
1.217 paf 528: }
1.22 paf 529:
1.241 misha 530: #else
1.240 misha 531:
1.257 misha 532: String sdata;
1.224 misha 533: if(output_column_names) {
534: if(table.columns()) { // named table
535: for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
1.257 misha 536: maybe_enclose( sdata, *i.next(), separators.encloser, separators.sencloser );
537: if(i.has_next())
538: sdata<<*separators.scolumn;
1.224 misha 539: }
540: } else { // nameless table [we were asked to output column names]
541: if(int lsize=table.count()?table[0]->count():0)
542: for(int column=0; column<lsize; column++) {
1.257 misha 543: char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];
544: sdata.append_know_length(cindex_tab,
545: snprintf(cindex_tab, MAX_NUMBER,
546: column<lsize-1?"%d%c":"%d", column, separators.column),
547: String::L_CLEAN);
1.224 misha 548: }
549: else
1.257 misha 550: sdata.append_help_length("empty nameless table", 0, String::L_CLEAN);
1.224 misha 551: }
1.257 misha 552: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.224 misha 553: }
554:
1.257 misha 555: // data lines
1.224 misha 556: Array_iterator<ArrayString*> i(table);
557: while(i.has_next()) {
558: for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
1.257 misha 559: maybe_enclose( sdata, *c.next(), separators.encloser, separators.sencloser );
1.224 misha 560: if(c.has_next())
1.257 misha 561: sdata<<*separators.scolumn;
1.224 misha 562: }
1.257 misha 563: sdata.append_know_length("\n", 1, String::L_CLEAN);
1.224 misha 564: }
565:
566: // write
567: {
1.257 misha 568: const char* data_cstr=sdata.cstr();
1.267 ! misha 569: file_write(r.charsets, file_spec, data_cstr, sdata.length(), true, do_append);
1.257 misha 570: if(*data_cstr) // not empty (when empty it's not heap memory)
571: pa_free((void*)data_cstr); // not needed anymore
1.224 misha 572: }
1.240 misha 573:
1.257 misha 574: #endif // don't use stringstream
1.224 misha 575: }
576:
1.182 paf 577: static void _count(Request& r, MethodParams&) {
578: int result=GET_SELF(r, VTable).table().count();
579: r.write_no_lang(*new VInt(result));
1.6 paf 580: }
581:
1.182 paf 582: static void _line(Request& r, MethodParams&) {
583: int result=1+GET_SELF(r, VTable).table().current();
584: r.write_no_lang(*new VInt(result));
1.6 paf 585: }
586:
1.182 paf 587: static void _offset(Request& r, MethodParams& params) {
588: Table& table=GET_SELF(r, VTable).table();
589: if(params.count()) {
1.133 paf 590: bool absolute=false;
1.182 paf 591: if(params.count()>1) {
592: const String& whence=params.as_string(0, "whence must be string");
1.133 paf 593: if(whence=="cur")
1.134 paf 594: absolute=false;
1.133 paf 595: else if(whence=="set")
1.134 paf 596: absolute=true;
1.133 paf 597: else
1.226 misha 598: throw Exception(PARSER_RUNTIME,
1.134 paf 599: &whence,
600: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 601: }
1.133 paf 602:
1.211 paf 603: int offset=params.as_int(params.count()-1, "offset must be expression", r);
604: table.offset(absolute, offset);
1.151 paf 605: } else
1.182 paf 606: r.write_no_lang(*new VInt(table.current()));
1.6 paf 607: }
608:
1.182 paf 609: static void _menu(Request& r, MethodParams& params) {
1.263 misha 610: InCycle temp(r);
1.221 paf 611:
1.182 paf 612: Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 613:
1.182 paf 614: Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 615:
1.182 paf 616: Table& table=GET_SELF(r, VTable).table();
1.99 parser 617: int saved_current=table.current();
1.182 paf 618: int size=table.count();
1.7 paf 619:
1.251 misha 620: if(delim_maybe_code) { // delimiter set
1.250 misha 621: bool need_delim=false;
622: for(int row=0; row<size; row++) {
623: table.set_current(row);
624:
625: StringOrValue sv_processed=r.process(body_code);
626: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
627:
628: const String* s_processed=sv_processed.get_string();
1.251 misha 629: if(s_processed && !s_processed->is_empty()) { // we have body
1.250 misha 630: if(need_delim) // need delim & iteration produced string?
631: r.write_pass_lang(r.process(*delim_maybe_code));
632: else
633: need_delim=true;
634: }
635:
636: r.write_pass_lang(sv_processed);
1.242 misha 637:
1.250 misha 638: if(lskip==Request::SKIP_BREAK)
639: break;
640: }
641: } else {
642: for(int row=0; row<size; row++) {
643: table.set_current(row);
644:
645: r.process_write(body_code);
646: Request::Skip lskip=r.get_skip(); r.set_skip(Request::SKIP_NOTHING);
647:
648: if(lskip==Request::SKIP_BREAK)
649: break;
1.7 paf 650: }
651: }
1.99 parser 652: table.set_current(saved_current);
1.7 paf 653: }
654:
1.110 parser 655: #ifndef DOXYGEN
1.74 paf 656: struct Row_info {
1.166 paf 657: Request *r;
1.74 paf 658: Table *table;
1.182 paf 659: Value* key_code;
660: size_t key_field;
661: Array<int>* value_fields;
662: HashStringValue* hash;
1.174 paf 663: Table2hash_distint distinct;
1.182 paf 664: size_t row;
1.227 misha 665: Table2hash_value_type value_type;
1.74 paf 666: };
1.110 parser 667: #endif
1.182 paf 668: static void table_row_to_hash(Table::element_type row, Row_info *info) {
669: const String* key;
670: if(info->key_code) {
671: info->table->set_current(info->row++); // change context row
672: StringOrValue sv_processed=info->r->process(*info->key_code);
1.166 paf 673: key=&sv_processed.as_string();
1.227 misha 674: } else {
1.182 paf 675: key=info->key_field<row->count()?row->get(info->key_field):0;
1.227 misha 676: }
1.166 paf 677:
678: if(!key)
679: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 680:
1.243 misha 681: bool exist=false;
682: switch(info->value_type) {
683: case C_STRING: {
1.227 misha 684: exist=info->hash->put_dont_replace(*key, new VString(*row->get(info->value_fields->get(0))));
1.243 misha 685: break;
1.227 misha 686: }
1.243 misha 687: case C_HASH: {
1.182 paf 688: VHash* vhash=new VHash;
689: HashStringValue& hash=vhash->hash();
690: for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
691: size_t value_field=i.next();
692: if(value_field<row->count())
1.174 paf 693: hash.put(
1.182 paf 694: *info->table->columns()->get(value_field),
695: new VString(*row->get(value_field)));
1.174 paf 696: }
697:
1.227 misha 698: exist=info->hash->put_dont_replace(*key, vhash);
1.243 misha 699: break;
1.174 paf 700: }
1.243 misha 701: case C_TABLE: {
702: VTable* vtable=(VTable*)info->hash->get(*key); // table exist?
1.174 paf 703: Table* table;
1.227 misha 704: if(vtable) {
1.243 misha 705: if(info->distinct==D_ILLEGAL) {
706: exist=true;
707: break;
708: }
1.174 paf 709: table=vtable->get_table();
1.227 misha 710: } else {
1.174 paf 711: // no? creating table of same structure as source
1.179 paf 712: Table::Action_options table_options(0, 0);
1.182 paf 713: table=new Table(*info->table, table_options/*no rows, just structure*/);
714: info->hash->put(*key, new VTable(table));
1.174 paf 715: }
1.182 paf 716: *table+=row;
1.243 misha 717: break;
1.174 paf 718: }
1.74 paf 719: }
1.227 misha 720: if(exist && info->distinct==D_ILLEGAL)
721: throw Exception(PARSER_RUNTIME,
722: key,
723: "duplicate key");
1.74 paf 724: }
1.235 misha 725:
726: Table2hash_value_type get_value_type(Value& vvalue_type){
727: if(vvalue_type.is_string()) {
728: const String& svalue_type=*vvalue_type.get_string();
729: if(svalue_type == "table"){
730: return C_TABLE;
731: } else if (svalue_type == "string") {
732: return C_STRING;
733: } else if (svalue_type == "hash") {
734: return C_HASH;
735: } else {
736: throw Exception(PARSER_RUNTIME,
737: &svalue_type,
738: "must be 'hash', 'table' or 'string'");
739: }
740: } else {
741: throw Exception(PARSER_RUNTIME,
742: 0,
743: "'type' must be hash");
744: }
745: }
746:
1.182 paf 747: static void _hash(Request& r, MethodParams& params) {
748: Table& self_table=GET_SELF(r, VTable).table();
749: VHash& result=*new VHash;
1.238 misha 750: if(Table::columns_type columns=self_table.columns()){
1.182 paf 751: if(columns->count()>0) {
1.174 paf 752: Table2hash_distint distinct=D_ILLEGAL;
1.227 misha 753: Table2hash_value_type value_type=C_HASH;
1.182 paf 754: int param_index=params.count()-1;
1.166 paf 755: if(param_index>0) {
1.238 misha 756: if(HashStringValue* options=params.as_no_junction(param_index, PARAM_MUST_NOT_BE_CODE).get_hash()){ // options where specified
1.166 paf 757: --param_index;
758: int valid_options=0;
1.238 misha 759: if(Value* vdistinct_code=options->get(sql_distinct_name)) { // $.distinct ?
1.166 paf 760: valid_options++;
1.174 paf 761: Value& vdistinct_value=r.process_to_value(*vdistinct_code);
762: if(vdistinct_value.is_string()) {
763: const String& sdistinct=*vdistinct_value.get_string();
1.227 misha 764: if(sdistinct=="tables") {
765: value_type=C_TABLE;
766: distinct=D_FIRST;
1.238 misha 767: } else {
1.226 misha 768: throw Exception(PARSER_RUNTIME,
1.174 paf 769: &sdistinct,
770: "must be 'tables' or true/false");
1.238 misha 771: }
772: } else {
1.174 paf 773: distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
1.238 misha 774: }
1.166 paf 775: }
1.238 misha 776: if(Value* vvalue_type_code=options->get(sql_value_type_name)) { // $.type ?
777: if(value_type==C_TABLE) // $.distinct[tables] already was specified
1.227 misha 778: throw Exception(PARSER_RUNTIME,
779: 0,
1.238 misha 780: "you can't specify $.distinct[tables] and $.type[] together");
781:
782: valid_options++;
783: value_type=get_value_type(r.process_to_value(*vvalue_type_code));
784: }
1.226 misha 785:
1.182 paf 786: if(valid_options!=options->count())
1.226 misha 787: throw Exception(PARSER_RUNTIME,
1.182 paf 788: 0,
1.166 paf 789: "called with invalid option");
1.163 paf 790: }
791: }
1.238 misha 792:
793: if(param_index==2) // options was specified but not as hash
1.226 misha 794: throw Exception(PARSER_RUNTIME,
1.182 paf 795: 0,
1.163 paf 796: "options must be hash");
797:
1.182 paf 798: Array<int> value_fields;
1.238 misha 799: if(param_index==0){ // list of columns wasn't specified
800: if(value_type==C_STRING) // $.type[string]
801: throw Exception(PARSER_RUNTIME,
802: 0,
803: "you must specify one value field with option $.type[string]");
804:
805: for(size_t i=0; i<columns->count(); i++) // by all columns, including key
806: value_fields+=i;
807:
808: } else { // list of columns was specified
1.227 misha 809: if(value_type==C_TABLE)
810: throw Exception(PARSER_RUNTIME,
1.174 paf 811: 0,
1.238 misha 812: "you can't specify value field(s) with option $.distinct[tables] or $.type[tables]");
813:
1.182 paf 814: Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
1.238 misha 815: if(value_fields_param.is_string()) { // one column as string was specified
816: value_fields+=self_table.column_name2index(*value_fields_param.get_string(), true);
817: } else if(Table* value_fields_table=value_fields_param.get_table()) { // list of columns were specified in table
818: for(Array_iterator<Table::element_type> i(*value_fields_table); i.has_next(); ) {
819: const String& value_field_name =*i.next()->get(0);
820: value_fields +=self_table.column_name2index(value_field_name, true);
1.123 parser 821: }
822: } else
1.226 misha 823: throw Exception(PARSER_RUNTIME,
1.182 paf 824: 0,
1.226 misha 825: "value field(s) must be string or table");
1.239 misha 826: }
1.74 paf 827:
1.227 misha 828: if(value_type==C_STRING && value_fields.count()!=1)
829: throw Exception(PARSER_RUNTIME,
830: 0,
1.238 misha 831: "you can specify only one value field with option $.type[string]");
1.182 paf 832:
833: {
834: Value* key_param=¶ms[0];
1.193 paf 835: Row_info info={
836: &r,
837: &self_table,
838: /*key_code=*/key_param->get_junction()?key_param:0,
1.197 paf 839: /*key_field=*/0/*filled below*/,
1.193 paf 840: &value_fields,
841: &result.hash(),
842: distinct,
1.227 misha 843: /*row=*/0,
844: value_type
1.193 paf 845: };
1.195 paf 846: info.key_field=(info.key_code?-1
847: :self_table.column_name2index(key_param->as_string(), true));
1.182 paf 848:
849: int saved_current=self_table.current();
850: self_table.for_each(table_row_to_hash, &info);
851: self_table.set_current(saved_current);
1.207 paf 852:
853: result.extract_default();
1.182 paf 854: }
1.74 paf 855: }
1.238 misha 856: }
1.97 parser 857: r.write_no_lang(result);
1.74 paf 858: }
859:
1.110 parser 860: #ifndef DOXYGEN
1.78 paf 861: struct Table_seq_item {
1.182 paf 862: ArrayString* row;
1.34 paf 863: union {
1.182 paf 864: const char *c_str;
1.34 paf 865: double d;
866: } value;
1.32 paf 867: };
1.110 parser 868: #endif
1.34 paf 869: static int sort_cmp_string(const void *a, const void *b) {
870: return strcmp(
1.78 paf 871: static_cast<const Table_seq_item *>(a)->value.c_str,
872: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 873: );
874: }
875: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 876: double va=static_cast<const Table_seq_item *>(a)->value.d;
877: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 878: if(va<vb)
879: return -1;
880: else if(va>vb)
881: return +1;
882: else
883: return 0;
884: }
1.182 paf 885: static void _sort(Request& r, MethodParams& params) {
886: Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 887:
1.182 paf 888: bool reverse=params.count()>1/*..[desc|asc|]*/?
889: reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 890: false; // default=asc
1.32 paf 891:
1.182 paf 892: Table& old_table=GET_SELF(r, VTable).table();
893: Table& new_table=*new Table(old_table.columns());
1.34 paf 894:
1.182 paf 895: Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 896: int i;
897:
898: // calculate key values
899: bool key_values_are_strings=true;
1.182 paf 900: int old_count=old_table.count();
901: for(i=0; i<old_count; i++) {
1.101 parser 902: old_table.set_current(i);
1.32 paf 903: // calculate key value
1.182 paf 904: seq[i].row=old_table[i];
905: Value& value=r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/);
1.34 paf 906: if(i==0) // determining key values type by first one
907: key_values_are_strings=value.is_string();
908:
909: if(key_values_are_strings)
910: seq[i].value.c_str=value.as_string().cstr();
911: else
912: seq[i].value.d=value.as_double();
1.32 paf 913: }
1.265 misha 914:
915: // @todo: handle this elsewhere
916: if(r.charsets.source().NAME()=="KOI8-R" && key_values_are_strings) {
917: for(i=0; i<old_count; i++)
918: if(*seq[i].value.c_str)
919: seq[i].value.c_str=Charset::transcode(seq[i].value.c_str, r.charsets.source(), UTF8_charset).cstr();
920: }
921:
1.266 misha 922: // sort keys
1.182 paf 923: _qsort(seq, old_count, sizeof(Table_seq_item),
1.34 paf 924: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 925:
1.34 paf 926: // reorder table as they require in 'seq'
1.182 paf 927: for(i=0; i<old_count; i++)
928: new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
929:
930: delete[] seq;
1.32 paf 931:
1.116 parser 932: // replace any previous table value
1.182 paf 933: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 934: }
935:
1.176 paf 936: #ifndef DOXYGEN
1.182 paf 937: struct Expression_is_true_info {
1.176 paf 938: Request* r;
939: Value* expression_code;
940: };
941: #endif
1.191 paf 942: static bool expression_is_true(Table&, Expression_is_true_info* info) {
943: return info->r->process_to_value(*info->expression_code).as_bool();
1.176 paf 944: }
945: static bool _locate_expression(Table& table, Table::Action_options o,
1.182 paf 946: Request& r, MethodParams& params) {
947: check_option_param(o.defined, params, 1,
1.176 paf 948: "locate by expression only has parameters: expression and, maybe, options");
1.182 paf 949: Value& expression_code=params.as_junction(0, "must be expression");
1.145 paf 950:
1.182 paf 951: Expression_is_true_info info={&r, &expression_code};
952: return table.table_first_that(expression_is_true, &info, o);
1.145 paf 953: }
1.176 paf 954: static bool _locate_name_value(Table& table, Table::Action_options o,
1.191 paf 955: Request&, MethodParams& params) {
1.182 paf 956: check_option_param(o.defined, params, 2,
1.176 paf 957: "locate by locate by name has parameters: name, value and, maybe, options");
1.182 paf 958: const String& name=params.as_string(0, "column name must be string");
1.232 misha 959: const String& value=params.as_string(1, VALUE_MUST_BE_STRING);
1.182 paf 960: return table.locate(name, value, o);
961: }
962: static void _locate(Request& r, MethodParams& params) {
963: Table& table=GET_SELF(r, VTable).table();
1.72 paf 964:
1.182 paf 965: Table::Action_options o=get_action_options(r, params, table);
966:
967: bool result=params[0].get_junction()?
968: _locate_expression(table, o, r, params) :
969: _locate_name_value(table, o, r, params);
1.249 misha 970: r.write_no_lang(VBool::get(result));
1.145 paf 971: }
1.182 paf 972:
973:
1.191 paf 974: static void _flip(Request& r, MethodParams&) {
1.182 paf 975: Table& old_table=GET_SELF(r, VTable).table();
1.184 paf 976: Table& new_table=*new Table(0);
1.182 paf 977: if(size_t old_count=old_table.count())
978: if(size_t old_cols=old_table[0]->count())
979: for(size_t column=0; column<old_cols; column++) {
980: Table::element_type new_row(new ArrayString(old_count));
981: for(size_t i=0; i<old_count; i++) {
982: Table::element_type old_row=old_table[i];
983: *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 984: }
1.182 paf 985: new_table+=new_row;
1.39 paf 986: }
987:
1.182 paf 988: r.write_no_lang(*new VTable(&new_table));
1.39 paf 989: }
990:
1.182 paf 991: static void _append(Request& r, MethodParams& params) {
992: Temp_lang temp_lang(r, String::L_PASS_APPENDED);
1.266 misha 993: const String& string=r.process_to_string(params[0]);
1.41 paf 994:
995: // parse cells
1.182 paf 996: Table::element_type row=new ArrayString;
997: size_t pos_after=0;
998: string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 999:
1.182 paf 1000: GET_SELF(r, VTable).table()+=row;
1.41 paf 1001: }
1002:
1.182 paf 1003: static void join_named_row(Table& src, Table* dest) {
1004: Table::columns_type dest_columns=dest->columns();
1005: size_t dest_columns_count=dest_columns->count();
1006: Table::element_type dest_row(new ArrayString(dest_columns_count));
1007: for(size_t dest_column=0; dest_column<dest_columns_count; dest_column++) {
1008: const String* src_item=src.item(*dest_columns->get(dest_column));
1009: *dest_row+=src_item?src_item:new String;
1010: }
1011: *dest+=dest_row;
1012: }
1013: static void join_nameless_row(Table& src, Table* dest) {
1014: *dest+=src[src.current()];
1015: }
1016: static void _join(Request& r, MethodParams& params) {
1017: Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 1018: if(!maybe_src)
1.226 misha 1019: throw Exception(PARSER_RUNTIME,
1.182 paf 1020: 0,
1.42 paf 1021: "source is not a table");
1.176 paf 1022: Table& src=*maybe_src;
1023:
1.182 paf 1024: Table::Action_options o=get_action_options(r, params, src);
1025: check_option_param(o.defined, params, 1,
1.176 paf 1026: "invalid extra parameter");
1.42 paf 1027:
1.182 paf 1028: Table& dest=GET_SELF(r, VTable).table();
1.42 paf 1029: if(&src == &dest)
1.226 misha 1030: throw Exception(PARSER_RUNTIME,
1.182 paf 1031: 0,
1.42 paf 1032: "source and destination are same table");
1033:
1.193 paf 1034: if(dest.columns()) // dest is named
1.182 paf 1035: src.table_for_each(join_named_row, &dest, o);
1036: else // dest is nameless
1037: src.table_for_each(join_nameless_row, &dest, o);
1.42 paf 1038: }
1039:
1.94 parser 1040: #ifndef DOXYGEN
1.169 paf 1041: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.182 paf 1042: ArrayString& columns;
1.218 paf 1043: int columns_count;
1.182 paf 1044: ArrayString* row;
1.94 parser 1045: public:
1.182 paf 1046: Table* table;
1047: public:
1048: Table_sql_event_handlers() :
1049: columns(*new ArrayString), row(0), table(0) {
1.94 parser 1050: }
1051:
1.259 misha 1052: bool add_column(SQL_Error& error, const char *str, size_t length) {
1.170 paf 1053: try {
1.259 misha 1054: columns+=new String(str, String::L_TAINTED, length);
1.170 paf 1055: return false;
1056: } catch(...) {
1057: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
1058: return true;
1059: }
1060: }
1061: bool before_rows(SQL_Error& error) {
1062: try {
1.182 paf 1063: table=new Table(&columns);
1.218 paf 1064: columns_count=columns.count();
1.170 paf 1065: return false;
1066: } catch(...) {
1067: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
1068: return true;
1069: }
1070: }
1071: bool add_row(SQL_Error& error) {
1072: try {
1.218 paf 1073: *table+=row=new ArrayString(columns_count);
1.170 paf 1074: return false;
1075: } catch(...) {
1076: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
1077: return true;
1078: }
1079: }
1.259 misha 1080: bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
1.170 paf 1081: try {
1.259 misha 1082: *row+=new String(str, String::L_TAINTED, length);
1.170 paf 1083: return false;
1084: } catch(...) {
1085: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
1086: return true;
1087: }
1.94 parser 1088: }
1089: };
1090: #endif
1.204 paf 1091:
1092: static void marshal_bind(
1093: HashStringValue::key_type aname,
1094: HashStringValue::value_type avalue,
1095: SQL_Driver::Placeholder** pptr)
1096: {
1097: SQL_Driver::Placeholder& ph=**pptr;
1098: ph.name=aname.cstr();
1.261 misha 1099: ph.value=avalue->as_string().untaint_cstr(String::L_AS_IS);
1.204 paf 1100: ph.is_null=avalue->get_class()==void_class;
1101: ph.were_updated=false;
1102:
1103: (*pptr)++;
1104: }
1105:
1106: // not static, used elsewhere
1107: int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) {
1108: int hash_count=hash.count();
1109: placeholders=new(UseGC) SQL_Driver::Placeholder[hash_count];
1110: SQL_Driver::Placeholder* ptr=placeholders;
1.221 paf 1111: hash.for_each<SQL_Driver::Placeholder**>(marshal_bind, &ptr);
1.204 paf 1112: return hash_count;
1113: }
1114:
1115: // not static, used elsewhere
1116: void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders) {
1117: SQL_Driver::Placeholder* ph=placeholders;
1118: for(int i=0; i<placeholder_count; i++, ph++)
1119: if(ph->were_updated) {
1120: Value* value;
1121: if(ph->is_null)
1.248 misha 1122: value=VVoid::get();
1.204 paf 1123: else
1.256 misha 1124: value=new VString(*new String(ph->value, String::L_TAINTED));
1.204 paf 1125: hash.put(ph->name, value);
1126: }
1127: }
1128:
1.182 paf 1129: static void _sql(Request& r, MethodParams& params) {
1130: Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 1131:
1.204 paf 1132: HashStringValue* bind=0;
1.244 misha 1133: ulong limit=SQL_NO_LIMIT;
1.100 parser 1134: ulong offset=0;
1.182 paf 1135: if(params.count()>1) {
1136: Value& voptions=params.as_no_junction(1, "options must be hash, not code");
1.212 paf 1137: if(voptions.is_defined() && !voptions.is_string())
1.182 paf 1138: if(HashStringValue* options=voptions.get_hash()) {
1.164 paf 1139: int valid_options=0;
1.204 paf 1140: if(Value* vbind=options->get(sql_bind_name)) {
1141: valid_options++;
1142: bind=vbind->get_hash();
1143: }
1.182 paf 1144: if(Value* vlimit=options->get(sql_limit_name)) {
1.245 misha 1145: valid_options++;
1146: limit=(ulong)r.process_to_value(*vlimit).as_double();
1.164 paf 1147: }
1.182 paf 1148: if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 1149: valid_options++;
1.147 paf 1150: offset=(ulong)r.process_to_value(*voffset).as_double();
1.164 paf 1151: }
1.182 paf 1152: if(valid_options!=options->count())
1.226 misha 1153: throw Exception(PARSER_RUNTIME,
1.182 paf 1154: 0,
1.164 paf 1155: "called with invalid option");
1.109 parser 1156: } else
1.226 misha 1157: throw Exception(PARSER_RUNTIME,
1.182 paf 1158: 0,
1.109 parser 1159: "options must be hash");
1.49 paf 1160: }
1161:
1.204 paf 1162: SQL_Driver::Placeholder* placeholders=0;
1163: uint placeholders_count=0;
1164: if(bind)
1165: placeholders_count=marshal_binds(*bind, placeholders);
1166:
1.182 paf 1167: Temp_lang temp_lang(r, String::L_SQL);
1168: const String& statement_string=r.process_to_string(statement);
1.262 misha 1169: const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection());
1.260 misha 1170:
1.182 paf 1171: Table_sql_event_handlers handlers;
1.135 paf 1172: #ifdef RESOURCES_DEBUG
1173: struct timeval mt[2];
1174: //measure:before
1175: gettimeofday(&mt[0],NULL);
1176: #endif
1.182 paf 1177: r.connection()->query(
1.203 paf 1178: statement_cstr,
1.208 paf 1179: placeholders_count, placeholders,
1.203 paf 1180: offset, limit,
1.160 paf 1181: handlers,
1182: statement_string);
1.135 paf 1183:
1184: #ifdef RESOURCES_DEBUG
1185: //measure:after connect
1186: gettimeofday(&mt[1],NULL);
1187:
1188: double t[2];
1189: for(int i=0;i<2;i++)
1190: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
1191:
1192: r.sql_request_time+=t[1]-t[0];
1193: #endif
1.204 paf 1194:
1195: if(bind)
1196: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.96 parser 1197:
1.182 paf 1198: Table& result=
1199: handlers.table?*handlers.table: // query resulted in table? return it
1200: *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 1201:
1202: // replace any previous table value
1.182 paf 1203: GET_SELF(r, VTable).set_table(result);
1.49 paf 1204: }
1205:
1.233 misha 1206: static void _columns(Request& r, MethodParams& params) {
1207: const String* column_column_name;
1208: if(params.count()>0)
1209: column_column_name=¶ms.as_string(0, COLUMN_NAME_MUST_BE_STRING);
1210: else
1211: column_column_name=new String("column");
1.88 parser 1212:
1.182 paf 1213: Table::columns_type result_columns(new ArrayString);
1.233 misha 1214: *result_columns+=column_column_name;
1.182 paf 1215: Table& result_table=*new Table(result_columns);
1.88 parser 1216:
1.182 paf 1217: Table& source_table=GET_SELF(r, VTable).table();
1218: if(Table::columns_type source_columns=source_table.columns()) {
1219: for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1220: Table::element_type result_row(new ArrayString);
1221: *result_row+=i.next();
1222: result_table+=result_row;
1.88 parser 1223: }
1224: }
1225:
1.182 paf 1226: r.write_no_lang(*new VTable(&result_table));
1.88 parser 1227: }
1228:
1.182 paf 1229: static void _select(Request& r, MethodParams& params) {
1.231 misha 1230: Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
1.148 paf 1231:
1.182 paf 1232: Table& source_table=GET_SELF(r, VTable).table();
1233: Table& result_table=*new Table(source_table.columns());
1.148 paf 1234:
1235: int saved_current=source_table.current();
1.182 paf 1236: int size=source_table.count();
1.148 paf 1237: for(int row=0; row<size; row++) {
1238: source_table.set_current(row);
1239:
1.150 paf 1240: bool condition=r.process_to_value(vcondition,
1.148 paf 1241: false/*don't intercept string*/).as_bool();
1242:
1243: if(condition) // ...condition is true=
1.182 paf 1244: result_table+=source_table[row]; // =green light to go to result
1.148 paf 1245: }
1246: source_table.set_current(saved_current);
1247:
1.182 paf 1248: r.write_no_lang(*new VTable(&result_table));
1.148 paf 1249: }
1250:
1.66 paf 1251: // constructor
1252:
1.182 paf 1253: MTable::MTable(): Methoded("table") {
1.142 paf 1254: // ^table::create{data}
1255: // ^table::create[nameless]{data}
1256: // ^table::create[table]
1.236 misha 1257: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 3);
1.142 paf 1258: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
1.236 misha 1259: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 3);
1.2 paf 1260:
1.142 paf 1261: // ^table::load[file]
1262: // ^table::load[nameless;file]
1.168 paf 1263: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 1264:
1265: // ^table.save[file]
1266: // ^table.save[nameless;file]
1.188 paf 1267: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 3);
1.6 paf 1268:
1.224 misha 1269: // add_native_method("save_old", Method::CT_DYNAMIC, _save_old, 1, 3);
1270:
1.6 paf 1271: // ^table.count[]
1.66 paf 1272: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 1273:
1274: // ^table.line[]
1.66 paf 1275: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 1276:
1.10 paf 1277: // ^table.offset[]
1.133 paf 1278: // ^table.offset(offset)
1279: // ^table.offset[cur|set](offset)
1280: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 1281:
1.10 paf 1282: // ^table.menu{code}
1283: // ^table.menu{code}[delim]
1.66 paf 1284: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 1285:
1.239 misha 1286: // ^table.hash[key field name]
1287: // ^table.hash[key field name][value field name(s) string/table]
1.163 paf 1288: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 1289:
1.102 parser 1290: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
1291: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 1292: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 1293:
1.36 paf 1294: // ^table.locate[field;value]
1.176 paf 1295: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 1296:
1297: // ^table.flip[]
1.66 paf 1298: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 1299:
1300: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 1301: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 1302:
1.157 paf 1303: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
1304: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 1305:
1306:
1.239 misha 1307: // ^table::sql[query]
1308: // ^table::sql[query][$.limit(1) $.offset(2)]
1.100 parser 1309: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 1310:
1.239 misha 1311: // ^table.columns[[column name]]
1.233 misha 1312: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 1);
1.148 paf 1313:
1314: // ^table.select(expression) = table
1315: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.40 paf 1316: }
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