Annotation of parser3/src/classes/table.C, revision 1.172.2.14.2.30
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.172.2.2 paf 4: Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
1.144 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.154 paf 6: */
1.20 paf 7:
1.172.2.14.2. 0(paf 8:3): static const char* IDENT_TABLE_C="$Date: 2003/04/11 15:00:04 $";
1.1 paf 9:
1.105 parser 10: #include "classes.h"
1.172.2.4 paf 11: #include "pa_vmethod_frame.h"
12:
1.16 paf 13: #include "pa_common.h"
1.1 paf 14: #include "pa_request.h"
15: #include "pa_vtable.h"
1.6 paf 16: #include "pa_vint.h"
1.51 paf 17: #include "pa_sql_connection.h"
1.72 paf 18: #include "pa_vbool.h"
1.1 paf 19:
1.66 paf 20: // class
21:
1.172.2.9 paf 22: class MTable: public Methoded {
1.66 paf 23: public: // VStateless_class
1.172.2.14.2. (paf 24:): Value* create_new_value() { return new VTable(); }
1.66 paf 25:
26: public:
1.172.2.6 paf 27: MTable();
1.70 paf 28:
29: public: // Methoded
1.66 paf 30: bool used_directly() { return true; }
31: };
1.1 paf 32:
1.172.2.6 paf 33: // global variable
34:
1.172.2.11 paf 35: DECLARE_CLASS_VAR(table, new MTable, 0);
1.172.2.7 paf 36:
37: // defines for globals
38:
39: #define SQL_LIMIT_NAME "limit"
40: #define SQL_OFFSET_NAME "offset"
41: #define SQL_DEFAULT_NAME "default"
42: #define SQL_DISTINCT_NAME "distinct"
1.172.2.14.2. 0(paf 43:3): #define TABLE_REVERSE_NAME "reverse"
1.172.2.7 paf 44:
45: // globals
46:
1.172.2.14.2. 4(paf 47:3): String sql_limit_name(SQL_LIMIT_NAME);
48:3): String sql_offset_name(SQL_OFFSET_NAME);
49:3): String sql_default_name(SQL_DEFAULT_NAME);
50:3): String sql_distinct_name(SQL_DISTINCT_NAME);
0(paf 51:3): String table_reverse_name(TABLE_REVERSE_NAME);
1.172.2.6 paf 52:
1.1 paf 53: // methods
1.66 paf 54:
1.172.2.14.2. 0(paf 55:3): static Table::Action_options get_action_options(Request& r, MethodParams& params,
56:3): const Table& source) {
57:3): Table::Action_options result;
58:3): if(!params.count())
59:3): return result;
60:3):
61:3):
62:3): HashStringValue* options=params.last().get_hash();
63:3): if(!options)
64:3): return result;
65:3):
66:3):
67:3): result.defined=true;
68:3): bool defined_offset=false;
69:3):
70:3): int valid_options=0;
71:3): if(Value* voffset=options->get(sql_offset_name)) {
72:3): valid_options++;
73:3): defined_offset=true;
74:3): if(voffset->is_string()) {
75:3): const String& soffset=*voffset->get_string();
76:3): if(soffset == "cur")
77:3): result.offset=source.current();
78:3): else
1.164 paf 79: throw Exception("parser.runtime",
1.172.2.14.2. 0(paf 80:3): &soffset,
81:3): "must be 'cur' string or expression");
82:3): } else
83:3): result.offset=r.process_to_value(*voffset).as_int();
84:3): }
85:3): if(Value* vlimit=options->get(sql_limit_name)) {
86:3): valid_options++;
87:3): result.limit=r.process_to_value(*vlimit).as_int();
88:3): }
89:3): if(Value *vreverse=(Value *)options->get(table_reverse_name)) {
90:3): valid_options++;
91:3): result.reverse=r.process_to_value(*vreverse).as_bool();
92:3): if(result.reverse && !defined_offset)
93:3): result.offset=source.count()-1;
94:3): }
95:3):
96:3): if(valid_options!=options->count())
97:3): throw Exception("parser.runtime",
98:3): 0,
99:3): "called with invalid option");
100:3):
101:3): return result;
102:3): }
103:3): static check_option_param(bool options_defined,
104:3): MethodParams& params, size_t next_param_index,
105:3): const char *msg) {
106:3): if(next_param_index+(options_defined?1:0) != params.count())
107:3): throw Exception("parser.runtime",
108:3): 0,
109:3): "%s", msg);
1.157 paf 110: }
111:
1.172.2.14.2. 4(paf 112:3): static void _create(Request& r, MethodParams& params) {
1.157 paf 113: // clone/copy part?
1.172.2.14.2. 5(paf 114:3): if(Table *source=params[0].get_table()) {
0(paf 115:3): Table::Action_options o=get_action_options(r, params, *source);
116:3): check_option_param(o.defined, params, 1,
117:3): "too many parameters");
118:3): GET_SELF(r, VTable).set_table(*new Table(*source, o));
1.157 paf 119: return;
120: }
1.142 paf 121:
1.1 paf 122: // data is last parameter
1.172.2.14.2. (paf 123:): Temp_lang temp_lang(r, String::L_PASS_APPENDED);
124:): const String& data=
4(paf 125:3): r.process_to_string(params.as_junction(params.count()-1, "body must be code"));
1.44 paf 126:
127: // parse columns
1.172.2.14.2. 7(paf 128:3): size_t raw_pos_after=0;
1.172.2.6 paf 129: Table::columns_type columns;
1.172.2.14.2. 4(paf 130:3): if(params.count()==2) {
1.172.2.6 paf 131: columns=Table::columns_type(0); // nameless
1.21 paf 132: } else {
1.172.2.6 paf 133: columns=Table::columns_type(new ArrayString);
1.44 paf 134:
1.172.2.6 paf 135: ArrayString head;
1.172.2.14.2. 7(paf 136:3): data.split(head, raw_pos_after, "\n", String::L_AS_IS, 1);
3(paf 137:3): if(head.count()) {
7(paf 138:3): size_t col_pos_after=0;
139:3): head[0]->split(*columns, col_pos_after, "\t", String::L_AS_IS);
3(paf 140:3): }
1.44 paf 141: }
142:
1.172.2.14.2. 3(paf 143:3): Table& table=*new Table(columns);
1.44 paf 144: // parse cells
1.172.2.6 paf 145:
146: ArrayString rows;
1.172.2.14.2. 7(paf 147:3): data.split(rows, raw_pos_after, "\n", String::L_AS_IS);
3(paf 148:3): Array_iterator<const String*> i(rows);
1.98 parser 149: while(i.has_next()) {
1.172.2.6 paf 150: Table::element_type row(new ArrayString);
1.172.2.14.2. 3(paf 151:3): const String& string=*i.next();
1.118 parser 152: // remove comment lines
1.172.2.14.2. 3(paf 153:3): if(!string.length())
1.44 paf 154: continue;
155:
1.172.2.14.2. 7(paf 156:3): size_t col_pos_after=0;
157:3): string.split(*row, col_pos_after, "\t", String::L_AS_IS);
3(paf 158:3): table+=row;
1.17 paf 159: }
1.1 paf 160:
1.44 paf 161: // replace any previous table value
1.172.2.6 paf 162: GET_SELF(r, VTable).set_table(table);
1.44 paf 163: }
164:
1.172.2.14.2. 4(paf 165:3): static void _load(Request& r, MethodParams& params) {
166:3): const String& first_param=params.as_string(0, "file name must be string");
1.168 paf 167: int filename_param_index=0;
1.172.2.14.2. 3(paf 168:3): bool nameless=first_param=="nameless";
1.168 paf 169: if(nameless)
170: filename_param_index++;
1.172.2.14.2. 8(paf 171:3): size_t options_param_index=filename_param_index+1;
1.168 paf 172:
1.44 paf 173: // loading text
1.172.2.14.2. 7(paf 174:3): char *data=file_read_text(r.charsets,
4(paf 175:3): r.absolute(params.as_string(filename_param_index, "file name must be string")),
1.168 paf 176: true,
1.172.2.14.2. 4(paf 177:3): options_param_index<params.count()?params.as_no_junction(options_param_index, "additional params must be hash").get_hash():0
1.168 paf 178: );
1.44 paf 179:
1.1 paf 180: // parse columns
1.172.2.6 paf 181: Table::columns_type columns;
1.168 paf 182: if(nameless) {
1.172.2.6 paf 183: columns=Table::columns_type(0); // nameless
1.1 paf 184: } else {
1.172.2.6 paf 185: columns=Table::columns_type(new ArrayString);
1.1 paf 186:
1.139 paf 187: while(char *row_chars=getrow(&data)) {
188: // remove empty&comment lines
189: if(!*row_chars || *row_chars == '#')
190: continue;
1.1 paf 191: do {
1.172.2.14.2. 3(paf 192:3): *columns+=new String(lsplit(&row_chars, '\t'), 0, true);
1.1 paf 193: } while(row_chars);
1.139 paf 194:
195: break;
196: }
1.1 paf 197: }
198:
199: // parse cells
1.172.2.14.2. (paf 200:): Table& table=*new Table(columns);
1.1 paf 201: char *row_chars;
202: while(row_chars=getrow(&data)) {
1.118 parser 203: // remove empty&comment lines
204: if(!*row_chars || *row_chars == '#')
1.28 paf 205: continue;
1.172.2.6 paf 206: Table::element_type row(new ArrayString);
1.1 paf 207: while(char *cell_chars=lsplit(&row_chars, '\t')) {
1.172.2.14.2. (paf 208:): *row+=new String(cell_chars, 0, true);
1.1 paf 209: }
1.172.2.14.2. (paf 210:): table+=row;
1.1 paf 211: };
212:
213: // replace any previous table value
1.172.2.6 paf 214: GET_SELF(r, VTable).set_table(table);
1.1 paf 215: }
1.2 paf 216:
1.146 paf 217: /// @todo "x\nx" "xxx""xx"
1.172.2.14.2. 4(paf 218:3): static void _save(Request& r, MethodParams& params) {
219:3): Value& vfile_name=params.as_no_junction(params.count()-1, "file name must not be code");
1.22 paf 220:
1.172.2.14.2. (paf 221:): Table& table=GET_SELF(r, VTable).table();
1.31 paf 222:
1.129 paf 223: bool do_append=false;
1.172.2.6 paf 224: String sdata;
1.172.2.14.2. 4(paf 225:3): if(params.count()==1) { // named output
1.31 paf 226: // write out names line
227: if(table.columns()) { // named table
1.172.2.14.2. 9(paf 228:3): for(Array_iterator<const String*> i(*table.columns()); i.has_next(); ) {
(paf 229:): sdata.append(*i.next(), String::L_TABLE);
1.98 parser 230: if(i.has_next())
1.172.2.14.2. 6(paf 231:3): sdata.append_know_length("\t", 1, String::L_CLEAN);
1.31 paf 232: }
233: } else { // nameless table
1.172.2.6 paf 234: if(int lsize=table.count()?table[0]->count():0)
1.31 paf 235: for(int column=0; column<lsize; column++) {
1.172.2.14.2. 5(paf 236:3): char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];
6(paf 237:3): sdata.append_know_length(cindex_tab,
(paf 238:): snprintf(cindex_tab, MAX_NUMBER, "%d\t", column),
239:): String::L_CLEAN);
1.31 paf 240: }
241: else
1.172.2.14.2. 0(paf 242:3): sdata.append_help_length("empty nameless table", 0, String::L_CLEAN);
1.31 paf 243: }
1.172.2.14.2. 6(paf 244:3): sdata.append_know_length("\n", 1, String::L_CLEAN);
1.129 paf 245: } else { // mode specified
1.172.2.14.2. 4(paf 246:3): const String& mode=params.as_string(0, "mode must be string");
3(paf 247:3): if(mode=="append")
1.129 paf 248: do_append=true;
1.172.2.14.2. 3(paf 249:3): else if(mode=="nameless")
1.129 paf 250: /*ok, already skipped names output*/;
251: else
1.146 paf 252: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 253:3): &mode,
1.129 paf 254: "unknown mode, must be 'append'");
255:
1.31 paf 256: }
257: // data lines
1.172.2.14.2. (paf 258:): Array_iterator<ArrayString*> i(table);
1.98 parser 259: while(i.has_next()) {
1.172.2.14.2. 9(paf 260:3): for(Array_iterator<const String*> c(*i.next()); c.has_next(); ) {
261:3): sdata.append(*c.next(), String::L_TABLE);
1.98 parser 262: if(c.has_next())
1.172.2.14.2. 6(paf 263:3): sdata.append_know_length("\t", 1, String::L_CLEAN);
1.31 paf 264: }
1.172.2.14.2. 6(paf 265:3): sdata.append_know_length("\n", 1, String::L_CLEAN);
1.31 paf 266: }
267:
268: // write
1.172.2.14.2. (paf 269:): file_write(r.absolute(vfile_name.as_string()),
270:): sdata.cstr(), sdata.length(), true, do_append);
1.22 paf 271: }
272:
1.172.2.14.2. 4(paf 273:3): static void _count(Request& r, MethodParams&) {
(paf 274:): int result=GET_SELF(r, VTable).table().count();
3(paf 275:3): r.write_no_lang(*new VInt(result));
1.6 paf 276: }
277:
1.172.2.14.2. 4(paf 278:3): static void _line(Request& r, MethodParams&) {
(paf 279:): int result=1+GET_SELF(r, VTable).table().current();
3(paf 280:3): r.write_no_lang(*new VInt(result));
1.6 paf 281: }
282:
1.172.2.14.2. 4(paf 283:3): static void _offset(Request& r, MethodParams& params) {
(paf 284:): Table& table=GET_SELF(r, VTable).table();
4(paf 285:3): if(params.count()) {
1.133 paf 286: bool absolute=false;
1.172.2.14.2. 4(paf 287:3): if(params.count()>1) {
288:3): const String& whence=params.as_string(0, "whence must be string");
3(paf 289:3): if(whence=="cur")
1.134 paf 290: absolute=false;
1.172.2.14.2. 3(paf 291:3): else if(whence=="set")
1.134 paf 292: absolute=true;
1.133 paf 293: else
1.146 paf 294: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 295:3): &whence,
1.134 paf 296: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 297: }
1.133 paf 298:
1.172.2.14.2. 4(paf 299:3): Value& offset_expr=params.as_junction(params.count()-1, "offset must be expression");
0(paf 300:3): table.offset(absolute, r.process_to_value(offset_expr).as_int());
1.151 paf 301: } else
1.172.2.14.2. 0(paf 302:3): r.write_no_lang(*new VInt(table.current()));
1.6 paf 303: }
304:
1.172.2.14.2. 4(paf 305:3): static void _menu(Request& r, MethodParams& params) {
306:3): Value& body_code=params.as_junction(0, "body must be code");
1.7 paf 307:
1.172.2.14.2. 5(paf 308:3): Value* delim_maybe_code=params.count()>1?¶ms[1]:0;
1.7 paf 309:
1.172.2.14.2. (paf 310:): Table& table=GET_SELF(r, VTable).table();
1.7 paf 311: bool need_delim=false;
1.99 parser 312: int saved_current=table.current();
1.172.2.6 paf 313: int size=table.count();
1.99 parser 314: for(int row=0; row<size; row++) {
1.22 paf 315: table.set_current(row);
1.7 paf 316:
1.161 paf 317: StringOrValue sv_processed=r.process(body_code);
1.172.2.14.2. 3(paf 318:3): const String* s_processed=sv_processed.get_string();
(paf 319:): if(delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body
1.161 paf 320: if(need_delim) // need delim & iteration produced string?
1.172.2.14.2. 3(paf 321:3): r.write_pass_lang(r.process(*delim_maybe_code));
1.7 paf 322: need_delim=true;
323: }
1.161 paf 324: r.write_pass_lang(sv_processed);
1.7 paf 325: }
1.99 parser 326: table.set_current(saved_current);
1.7 paf 327: }
328:
1.110 parser 329: #ifndef DOXYGEN
1.172.2.14.2. 8(paf 330:3): enum Table2hash_distint { D_ILLEGAL, D_FIRST, D_TABLES };
1.74 paf 331: struct Row_info {
1.166 paf 332: Request *r;
1.74 paf 333: Table *table;
1.172.2.14.2. (paf 334:): Value* key_code;
8(paf 335:3): size_t key_field;
1.172.2.6 paf 336: Array<int>* value_fields;
337: HashStringValue* hash;
1.172.2.14.2. 8(paf 338:3): Table2hash_distint distinct;
339:3): size_t row;
1.74 paf 340: };
1.110 parser 341: #endif
1.172.2.6 paf 342: static void table_row_to_hash(Table::element_type row, Row_info *info) {
1.172.2.14.2. 3(paf 343:3): const String* key;
1.172.2.6 paf 344: if(info->key_code) {
345: info->table->set_current(info->row++); // change context row
1.172.2.14.2. 3(paf 346:3): StringOrValue sv_processed=info->r->process(*info->key_code);
347:3): key=&sv_processed.as_string();
1.166 paf 348: } else
1.172.2.14.2. (paf 349:): key=info->key_field<row->count()?row->get(info->key_field):0;
1.166 paf 350:
351: if(!key)
352: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 353:
1.172.2.14.2. 8(paf 354:3): switch(info->distinct) {
355:3): case D_ILLEGAL: case D_FIRST:
356:3): {
357:3): VHash* vhash=new VHash;
358:3): HashStringValue& hash=vhash->hash();
359:3): for(Array_iterator<int> i(*info->value_fields); i.has_next(); ) {
360:3): size_t value_field=i.next();
361:3): if(value_field<row->count())
362:3): hash.put(
363:3): *info->table->columns()->get(value_field),
364:3): new VString(*row->get(value_field)));
365:3): }
1.166 paf 366:
1.172.2.14.2. 8(paf 367:3): if(info->hash->put_dont_replace(*key, vhash)) // put. existed?
368:3): if(info->distinct==D_ILLEGAL)
369:3): throw Exception("parser.runtime",
370:3): key,
371:3): "duplicate key");
372:3): }
373:3): break;
374:3): case D_TABLES:
375:3): {
376:3): VTable* vtable=(VTable*)info->hash->get(*key); // put. table existed?
377:3): Table* table;
378:3): if(vtable)
379:3): table=vtable->get_table();
380:3): else {
381:3): // no? creating table of same structure as source
0(paf 382:3): Table::Action_options table_options;
383:3): table=new Table(*info->table, table_options/*no rows, just structure*/);
8(paf 384:3): info->hash->put(*key, new VTable(table));
385:3): }
386:3): *table+=row;
387:3): }
388:3): break;
389:3): default:
390:3): throw Exception(0,
391:3): 0,
9(paf 392:3): "invalid distinct code (#%d)", info->distinct);
8(paf 393:3): }
1.74 paf 394: }
1.172.2.14.2. 4(paf 395:3): static void _hash(Request& r, MethodParams& params) {
(paf 396:): Table& self_table=GET_SELF(r, VTable).table();
3(paf 397:3): VHash& result=*new VHash;
1.172.2.6 paf 398: if(Table::columns_type columns=self_table.columns())
399: if(columns->count()>0) {
1.172.2.14.2. 8(paf 400:3): Table2hash_distint distinct=D_ILLEGAL;
4(paf 401:3): int param_index=params.count()-1;
1.166 paf 402: if(param_index>0) {
1.172.2.6 paf 403: if(HashStringValue* options=
1.172.2.14.2. 4(paf 404:3): params.as_no_junction(param_index, "param must not be code").get_hash()) {
1.166 paf 405: --param_index;
406: int valid_options=0;
1.172.2.14.2. 8(paf 407:3): if(Value* vdistinct_code=options->get(sql_distinct_name)) {
1.166 paf 408: valid_options++;
1.172.2.14.2. 8(paf 409:3): Value& vdistinct_value=r.process_to_value(*vdistinct_code);
410:3): if(vdistinct_value.is_string()) {
411:3): const String& sdistinct=*vdistinct_value.get_string();
412:3): if(sdistinct=="tables")
413:3): distinct=D_TABLES;
414:3): else
415:3): throw Exception("parser.runtime",
416:3): &sdistinct,
417:3): "must be 'tables' or true/false");
418:3): } else
419:3): distinct=vdistinct_value.as_bool()?D_FIRST:D_ILLEGAL;
1.166 paf 420: }
1.172.2.6 paf 421: if(valid_options!=options->count())
1.166 paf 422: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 423:3): 0,
1.166 paf 424: "called with invalid option");
1.163 paf 425: }
426: }
427: if(param_index==2) // bad options param type
428: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 429:3): 0,
1.163 paf 430: "options must be hash");
431:
1.172.2.6 paf 432: Array<int> value_fields;
1.163 paf 433: if(param_index>0) {
1.172.2.14.2. 8(paf 434:3): if(distinct!=D_ILLEGAL && distinct!=D_FIRST)
435:3): throw Exception("parser.runtime",
436:3): 0,
437:3): "in distinct[tables] mode you may not specify value field(s)");
4(paf 438:3): Value& value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
3(paf 439:3): if(value_fields_param.is_string()) {
1.172.2.6 paf 440: value_fields+=self_table.column_name2index(
1.172.2.14.2. 3(paf 441:3): *value_fields_param.get_string(), true);
442:3): } else if(Table* value_fields_table=value_fields_param.get_table()) {
1(paf 443:3): for(Array_iterator<Table::element_type> i(*value_fields_table);
444:3): i.has_next(); ) {
445:3): const String& value_field_name
446:3): =*i.next()->get(0);
447:3): value_fields
448:3): +=self_table.column_name2index(value_field_name, true);
1.123 parser 449: }
450: } else
1.146 paf 451: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 452:3): 0,
1.123 parser 453: "value field(s) must be string or self_table"
454: );
455: } else { // by all columns, including key
1.172.2.14.2. 8(paf 456:3): if(!(distinct!=D_ILLEGAL && distinct!=D_FIRST))
457:3): for(size_t i=0; i<columns->count(); i++)
458:3): value_fields+=i;
1.74 paf 459: }
460:
1.172.2.6 paf 461:
462: {
463: Row_info info;
464: info.r=&r;
465: info.table=&self_table;
1.172.2.14.2. 5(paf 466:3): Value* key_param=¶ms[0];
(paf 467:): info.key_code=key_param->get_junction()?key_param:0;
1.172.2.6 paf 468: info.key_field=info.key_code?-1
1.172.2.14.2. (paf 469:): :self_table.column_name2index(key_param->as_string(), true);
1.172.2.6 paf 470: info.value_fields=&value_fields;
1.172.2.14.2. 2(paf 471:3): info.hash=&result.hash();
1.172.2.6 paf 472: info.distinct=distinct;
1.172.2.12 paf 473: info.row=0;
1.172.2.6 paf 474:
475: int saved_current=self_table.current();
476: self_table.for_each(table_row_to_hash, &info);
477: self_table.set_current(saved_current);
478: }
1.74 paf 479: }
1.97 parser 480: r.write_no_lang(result);
1.74 paf 481: }
482:
1.110 parser 483: #ifndef DOXYGEN
1.78 paf 484: struct Table_seq_item {
1.172.2.13 paf 485: ArrayString* row;
1.34 paf 486: union {
1.172.2.14.2. 3(paf 487:3): const char *c_str;
1.34 paf 488: double d;
489: } value;
1.32 paf 490: };
1.110 parser 491: #endif
1.34 paf 492: static int sort_cmp_string(const void *a, const void *b) {
493: return strcmp(
1.78 paf 494: static_cast<const Table_seq_item *>(a)->value.c_str,
495: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 496: );
497: }
498: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 499: double va=static_cast<const Table_seq_item *>(a)->value.d;
500: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 501: if(va<vb)
502: return -1;
503: else if(va>vb)
504: return +1;
505: else
506: return 0;
507: }
1.172.2.14.2. 4(paf 508:3): static void _sort(Request& r, MethodParams& params) {
509:3): Value& key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 510:
1.172.2.14.2. 4(paf 511:3): bool reverse=params.count()>1/*..[desc|asc|]*/?
512:3): reverse=params.as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 513: false; // default=asc
1.32 paf 514:
1.172.2.14.2. (paf 515:): Table& old_table=GET_SELF(r, VTable).table();
3(paf 516:3): Table& new_table=*new Table(old_table.columns());
1.34 paf 517:
1.172.2.14.2. 6(paf 518:3): Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 519: int i;
520:
521: // calculate key values
522: bool key_values_are_strings=true;
1.172.2.14.2. 8(paf 523:3): int old_count=old_table.count();
524:3): for(i=0; i<old_count; i++) {
1.101 parser 525: old_table.set_current(i);
1.32 paf 526: // calculate key value
1.172.2.14.2. (paf 527:): seq[i].row=old_table[i];
2(paf 528:3): Value& value=r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/);
1.34 paf 529: if(i==0) // determining key values type by first one
1.172.2.14.2. 2(paf 530:3): key_values_are_strings=value.is_string();
1.34 paf 531:
532: if(key_values_are_strings)
1.172.2.14.2. 2(paf 533:3): seq[i].value.c_str=value.as_string().cstr();
1.34 paf 534: else
1.172.2.14.2. 2(paf 535:3): seq[i].value.d=value.as_double();
1.32 paf 536: }
537: // sort keys
1.172.2.14.2. 8(paf 538:3): _qsort(seq, old_count, sizeof(Table_seq_item),
1.34 paf 539: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 540:
1.34 paf 541: // reorder table as they require in 'seq'
1.172.2.14.2. 8(paf 542:3): for(i=0; i<old_count; i++)
543:3): new_table+=Table::element_type(seq[reverse?old_count-1-i:i].row);
6(paf 544:3):
545:3): delete[] seq;
1.32 paf 546:
1.116 parser 547: // replace any previous table value
1.172.2.6 paf 548: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 549: }
550:
1.172.2.14.2. 0(paf 551:3): #ifndef DOXYGEN
552:3): struct Locate_expression_func_info {
553:3): Request* r;
554:3): Value* expression_code;
555:3): };
556:3): #endif
557:3): bool locate_expression_func(Table& self, void* ainfo) {
558:3): Locate_expression_func_info& info=*static_cast<Locate_expression_func_info*>(ainfo);
559:3): return info.r->process_to_value(*info.expression_code).as_bool();
560:3): }
561:3): static bool _locate_expression(Table& table, Table::Action_options o,
562:3): Request& r, MethodParams& params) {
563:3): check_option_param(o.defined, params, 1,
564:3): "locate by expression only has parameters: expression and, maybe, options");
4(paf 565:3): Value& expression_code=params.as_junction(0, "must be expression");
1.145 paf 566:
1.172.2.14.2. 0(paf 567:3): Locate_expression_func_info info={&r, &expression_code};
568:3): return table.locate(locate_expression_func, &info, o);
1.145 paf 569: }
1.172.2.14.2. 0(paf 570:3): static bool _locate_name_value(Table& table, Table::Action_options o,
571:3): Request& r, MethodParams& params) {
572:3): check_option_param(o.defined, params, 2,
573:3): "locate by locate by name has parameters: name, value and, maybe, options");
574:3): const String& name=params.as_string(0, "column name must be string");
575:3): const String& value=params.as_string(1, "value must be string");
576:3): return table.locate(name, value, o);
1.145 paf 577: }
1.172.2.14.2. 4(paf 578:3): static void _locate(Request& r, MethodParams& params) {
0(paf 579:3): Table& table=GET_SELF(r, VTable).table();
580:3):
581:3): Table::Action_options o=get_action_options(r, params, table);
582:3):
5(paf 583:3): bool result=params[0].get_junction()?
0(paf 584:3): _locate_expression(table, o, r, params) :
585:3): _locate_name_value(table, o, r, params);
3(paf 586:3): r.write_no_lang(*new VBool(result));
1.37 paf 587: }
588:
1.172.2.14.2. 0(paf 589:3):
4(paf 590:3): static void _flip(Request& r, MethodParams& params) {
(paf 591:): Table& old_table=GET_SELF(r, VTable).table();
3(paf 592:3): Table& new_table=*new Table(old_table.columns());
8(paf 593:3): if(size_t old_count=old_table.count())
594:3): if(size_t old_cols=old_table[0]->count())
595:3): for(size_t column=0; column<old_cols; column++) {
596:3): Table::element_type new_row(new ArrayString(old_count));
597:3): for(size_t i=0; i<old_count; i++) {
1.172.2.6 paf 598: Table::element_type old_row=old_table[i];
1.172.2.14.2. 3(paf 599:3): *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 600: }
1.172.2.14.2. 3(paf 601:3): new_table+=new_row;
1.39 paf 602: }
603:
1.172.2.14.2. 3(paf 604:3): r.write_no_lang(*new VTable(&new_table));
1.39 paf 605: }
606:
1.172.2.14.2. 4(paf 607:3): static void _append(Request& r, MethodParams& params) {
1.134 paf 608: // data
1.172.2.14.2. (paf 609:): Temp_lang temp_lang(r, String::L_PASS_APPENDED);
4(paf 610:3): const String& string=r.process_to_string(params.as_junction(0, "body must be code"));
1.41 paf 611:
612: // parse cells
1.172.2.14.2. 3(paf 613:3): Table::element_type row=new ArrayString;
614:3): size_t pos_after=0;
615:3): string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 616:
1.172.2.14.2. (paf 617:): GET_SELF(r, VTable).table()+=row;
1.41 paf 618: }
619:
1.172.2.14.2. 4(paf 620:3): static void _join(Request& r, MethodParams& params) {
621:3): Table* maybe_src=params.as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 622: if(!maybe_src)
1.146 paf 623: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 624:3): 0,
1.42 paf 625: "source is not a table");
626: Table& src=*maybe_src;
1.172.2.14.2. 0(paf 627:3):
628:3): Table::Action_options o=get_action_options(r, params, src);
629:3): check_option_param(o.defined, params, 1,
630:3): "invalid extra parameter");
631:3):
(paf 632:): Table& dest=GET_SELF(r, VTable).table();
1.42 paf 633: if(&src == &dest)
1.146 paf 634: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 635:3): 0,
1.42 paf 636: "source and destination are same table");
637:
1.172.2.6 paf 638: if(Table::columns_type dest_columns=dest.columns()) { // dest is named
1.172.2.14.2. 0(paf 639:3): size_t saved_src_current=src.current();
640:3): size_t m=src.count()-o.offset;
641:3): if(!o.limit || o.limit>m)
642:3): o.limit=m;
643:3): int end=o.offset+o.limit;
644:3): for(int src_row=o.offset; src_row<end; src_row++) {
1.42 paf 645: src.set_current(src_row);
1.172.2.6 paf 646: Table::element_type dest_row(new ArrayString(src.count()));
1.172.2.14.2. 8(paf 647:3): for(size_t dest_column=0; dest_column<dest_columns->count(); dest_column++) {
3(paf 648:3): const String* src_item=src.item(*dest_columns->get(dest_column));
649:3): *dest_row+=src_item?src_item:new String;
1.140 paf 650: }
1.172.2.6 paf 651: dest+=dest_row;
1.42 paf 652: }
653: src.set_current(saved_src_current);
654: } else { // dest is nameless
1.172.2.14.2. 8(paf 655:3): size_t src_count=src.count();
656:3): for(size_t src_row=0; src_row<src_count; src_row++)
1.172.2.6 paf 657: dest+=src[src_row];
1.42 paf 658: }
659: }
660:
1.94 parser 661: #ifndef DOXYGEN
1.169 paf 662: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.172.2.14.2. (paf 663:): ArrayString& columns;
1.172.2.6 paf 664: ArrayString* row;
665: public:
1.172.2.14.2. (paf 666:): Table* table;
1.94 parser 667: public:
1.172.2.14.2. 3(paf 668:3): Table_sql_event_handlers() :
669:3): columns(*new ArrayString), row(0), table(0) {
1.172.2.14 paf 670: }
1.94 parser 671:
1.172.2.14.2. 3(paf 672:3): bool add_column(SQL_Error& error, const char *str, size_t length) {
1.170 paf 673: try {
1.172.2.14.2. 3(paf 674:3): columns+=new String(str, length, true);
1.170 paf 675: return false;
676: } catch(...) {
677: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
678: return true;
679: }
680: }
681: bool before_rows(SQL_Error& error) {
682: try {
1.172.2.14.2. 3(paf 683:3): table=new Table(&columns);
1.170 paf 684: return false;
685: } catch(...) {
686: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
687: return true;
688: }
689: }
690: bool add_row(SQL_Error& error) {
691: try {
1.172.2.14.2. 3(paf 692:3): *table+=row=new ArrayString;
1.170 paf 693: return false;
694: } catch(...) {
695: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
696: return true;
697: }
698: }
1.172.2.14.2. 3(paf 699:3): bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
1.170 paf 700: try {
1.172.2.14.2. 3(paf 701:3): String& cell=*new String;
702:3): if(length)
6(paf 703:3): cell.append_know_length(str, length, String::L_TAINTED);
3(paf 704:3): *row+=&cell;
1.170 paf 705: return false;
706: } catch(...) {
707: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
708: return true;
709: }
1.94 parser 710: }
711: };
712: #endif
1.172.2.14.2. 4(paf 713:3): static void _sql(Request& r, MethodParams& params) {
714:3): Value& statement=params.as_junction(0, "statement must be code");
1.49 paf 715:
1.53 paf 716: ulong limit=0;
1.100 parser 717: ulong offset=0;
1.172.2.14.2. 4(paf 718:3): if(params.count()>1) {
719:3): Value& voptions=params.as_no_junction(1, "options must be hash, not code");
3(paf 720:3): if(!voptions.is_string())
721:3): if(HashStringValue* options=voptions.get_hash()) {
1.164 paf 722: int valid_options=0;
1.172.2.14.2. (paf 723:): if(Value* vlimit=options->get(sql_limit_name)) {
1.164 paf 724: valid_options++;
1.172.2.14.2. 3(paf 725:3): limit=(ulong)r.process_to_value(*vlimit).as_double();
1.164 paf 726: }
1.172.2.14.2. (paf 727:): if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 728: valid_options++;
1.172.2.14.2. 3(paf 729:3): offset=(ulong)r.process_to_value(*voffset).as_double();
1.164 paf 730: }
1.172.2.6 paf 731: if(valid_options!=options->count())
1.164 paf 732: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 733:3): 0,
1.164 paf 734: "called with invalid option");
1.109 parser 735: } else
1.146 paf 736: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 737:3): 0,
1.109 parser 738: "options must be hash");
1.49 paf 739: }
740:
1.172.2.14.2. (paf 741:): Temp_lang temp_lang(r, String::L_SQL);
742:): const String& statement_string=r.process_to_string(statement);
1.172.2.2 paf 743: const char* statement_cstr=
1.172.2.14.2. 3(paf 744:3): statement_string.cstr(String::L_UNSPECIFIED, r.connection());
745:3): Table_sql_event_handlers handlers;
1.135 paf 746: #ifdef RESOURCES_DEBUG
747: struct timeval mt[2];
748: //measure:before
749: gettimeofday(&mt[0],NULL);
750: #endif
1.172.2.14.2. (paf 751:): r.connection()->query(
1.160 paf 752: statement_cstr, offset, limit,
753: handlers,
754: statement_string);
1.135 paf 755:
756: #ifdef RESOURCES_DEBUG
757: //measure:after connect
758: gettimeofday(&mt[1],NULL);
759:
760: double t[2];
761: for(int i=0;i<2;i++)
762: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
763:
764: r.sql_request_time+=t[1]-t[0];
765: #endif
1.96 parser 766:
1.172.2.14.2. 3(paf 767:3): Table& result=
768:3): handlers.table?*handlers.table: // query resulted in table? return it
769:3): *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 770:
771: // replace any previous table value
1.172.2.6 paf 772: GET_SELF(r, VTable).set_table(result);
1.49 paf 773: }
774:
1.172.2.14.2. 4(paf 775:3): static void _columns(Request& r, MethodParams&) {
1.88 parser 776:
1.172.2.6 paf 777: Table::columns_type result_columns(new ArrayString);
1.172.2.14.2. 3(paf 778:3): *result_columns+=new String("column");
779:3): Table& result_table=*new Table(result_columns);
1.172.2.6 paf 780:
1.172.2.14.2. (paf 781:): Table& source_table=GET_SELF(r, VTable).table();
1.172.2.6 paf 782: if(Table::columns_type source_columns=source_table.columns()) {
1.172.2.14.2. 9(paf 783:3): for(Array_iterator<const String*> i(*source_columns); i.has_next(); ) {
1.172.2.6 paf 784: Table::element_type result_row(new ArrayString);
785: *result_row+=i.next();
1.172.2.14.2. 3(paf 786:3): result_table+=result_row;
1.88 parser 787: }
788: }
789:
1.172.2.14.2. 3(paf 790:3): r.write_no_lang(*new VTable(&result_table));
1.88 parser 791: }
792:
1.172.2.14.2. 4(paf 793:3): static void _select(Request& r, MethodParams& params) {
794:3): Value& vcondition=params.as_junction(0, "condition must be expression");
1.148 paf 795:
1.172.2.14.2. (paf 796:): Table& source_table=GET_SELF(r, VTable).table();
3(paf 797:3): Table& result_table=*new Table(source_table.columns());
1.148 paf 798:
799: int saved_current=source_table.current();
1.172.2.6 paf 800: int size=source_table.count();
1.148 paf 801: for(int row=0; row<size; row++) {
802: source_table.set_current(row);
803:
1.150 paf 804: bool condition=r.process_to_value(vcondition,
1.149 paf 805: /*0/*no name* /,*/
1.172.2.14.2. 3(paf 806:3): false/*don't intercept string*/).as_bool();
1.148 paf 807:
808: if(condition) // ...condition is true=
1.172.2.14.2. 3(paf 809:3): result_table+=source_table[row]; // =green light to go to result
1.148 paf 810: }
811: source_table.set_current(saved_current);
812:
1.172.2.14.2. 3(paf 813:3): r.write_no_lang(*new VTable(&result_table));
1.148 paf 814: }
815:
1.66 paf 816: // constructor
817:
1.172.2.6 paf 818: MTable::MTable(): Methoded("table") {
1.142 paf 819: // ^table::create{data}
820: // ^table::create[nameless]{data}
821: // ^table::create[table]
822: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 2);
823: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
824: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 2);
1.2 paf 825:
1.142 paf 826: // ^table::load[file]
827: // ^table::load[nameless;file]
1.168 paf 828: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 829:
830: // ^table.save[file]
831: // ^table.save[nameless;file]
1.66 paf 832: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
1.6 paf 833:
834: // ^table.count[]
1.66 paf 835: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 836:
837: // ^table.line[]
1.66 paf 838: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 839:
1.10 paf 840: // ^table.offset[]
1.133 paf 841: // ^table.offset(offset)
842: // ^table.offset[cur|set](offset)
843: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 844:
1.10 paf 845: // ^table.menu{code}
846: // ^table.menu{code}[delim]
1.66 paf 847: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 848:
1.79 paf 849: // ^table:hash[key field name]
1.123 parser 850: // ^table:hash[key field name][value field name(s) string/table]
1.163 paf 851: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 852:
1.102 parser 853: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
854: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 855: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 856:
1.36 paf 857: // ^table.locate[field;value]
1.172.2.14.2. 0(paf 858:3): add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 3);
1.39 paf 859:
860: // ^table.flip[]
1.66 paf 861: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 862:
863: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 864: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 865:
1.157 paf 866: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
867: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 868:
869:
1.100 parser 870: // ^table:sql[query]
871: // ^table:sql[query][$.limit(1) $.offset(2)]
872: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 873:
874: // ^table:columns[]
875: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 0);
1.148 paf 876:
877: // ^table.select(expression) = table
878: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.40 paf 879: }
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