Annotation of parser3/src/classes/table.C, revision 1.172.2.14.2.7
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. (paf 8:): static const char* IDENT_TABLE_C="$Date: 2003/03/21 13:42:28 $";
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"
43:
44: // globals
45:
1.172.2.14.2. (paf 46:): const String& sql_limit_name(new String(SQL_LIMIT_NAME));
47:): const String& sql_offset_name(new String(SQL_OFFSET_NAME));
48:): const String& sql_default_name(new String(SQL_DEFAULT_NAME));
49:): const String& sql_distinct_name(new String(SQL_DISTINCT_NAME));
1.172.2.6 paf 50:
1.1 paf 51: // methods
1.66 paf 52:
1.172.2.14.2. (paf 53:): static void get_copy_options(Request& r, MethodParams* params, int param_index,
1.157 paf 54: const Table& source,
55: int& offset,
56: int& limit) {
1.172.2.6 paf 57:
1.157 paf 58: offset=0;
59: limit=0;
1.172.2.10 paf 60: if(params->count()<=param_index)
1.157 paf 61: return;
62:
1.172.2.14.2. (paf 63:): Value* voptions=params->as_no_junction(param_index, "options must be hash, not code");
1.172.2.6 paf 64: if(!voptions->is_string()) {
1.172.2.14.2. (paf 65:): if(HashStringValue* options=voptions->get_hash()) {
1.164 paf 66: int valid_options=0;
1.172.2.14.2. (paf 67:): if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 68: valid_options++;
1.157 paf 69: if(voffset->is_string()) {
1.172.2.14.2. (paf 70:): const String& soffset=voffset->get_string();
1.172.2.6 paf 71: if(*soffset == "cur")
1.157 paf 72: offset=source.current();
73: else
74: throw Exception("parser.runtime",
1.172.2.6 paf 75: soffset,
1.157 paf 76: "must be 'cur' string or expression");
77: } else
1.172.2.6 paf 78: offset=r.process_to_value(voffset)->as_int();
1.164 paf 79: }
1.172.2.14.2. (paf 80:): if(Value* vlimit=options->get(sql_limit_name)) {
1.164 paf 81: valid_options++;
1.172.2.6 paf 82: limit=r.process_to_value(vlimit)->as_int();
1.172.2.12 paf 83: if(!limit) // zero limit = should be 'nothing to copy', for methods zero means 'all'
84: limit=-1; // thus fixing
1.164 paf 85: }
1.172.2.6 paf 86: if(valid_options!=options->count())
1.164 paf 87: throw Exception("parser.runtime",
1.172.2.5 paf 88: method_name,
1.164 paf 89: "called with invalid option");
1.157 paf 90: } else
91: throw Exception("parser.runtime",
1.172.2.5 paf 92: method_name,
1.157 paf 93: "options must be hash");
1.158 paf 94: }
1.157 paf 95: }
96:
1.172.2.14.2. (paf 97:): static void _create(Request& r, MethodParams* params) {
1.157 paf 98: // clone/copy part?
1.172.2.10 paf 99: if(const Table *source=(*params)[0]->get_table()) {
1.157 paf 100: int offset, limit;
101: get_copy_options(r, method_name, params, 1, *source,
102: offset, limit);
1.172.2.14.2. (paf 103:): GET_SELF(r, VTable).set_table(Table*(new Table(*source, offset, limit)));
1.157 paf 104: return;
105: }
1.142 paf 106:
1.1 paf 107: // data is last parameter
1.172.2.14.2. (paf 108:): Temp_lang temp_lang(r, String::L_PASS_APPENDED);
109:): const String& data=
1.172.2.10 paf 110: r.process_to_string(params->as_junction(params->count()-1, "body must be code"));
1.44 paf 111:
112: size_t pos_after=0;
113: // parse columns
1.172.2.6 paf 114: Table::columns_type columns;
1.172.2.10 paf 115: if(params->count()==2) {
1.172.2.6 paf 116: columns=Table::columns_type(0); // nameless
1.21 paf 117: } else {
1.172.2.6 paf 118: columns=Table::columns_type(new ArrayString);
1.44 paf 119:
1.172.2.6 paf 120: ArrayString head;
1.172.2.14.2. (paf 121:): data->split(head, &pos_after, "\n", 1, String::L_AS_IS, 1);
1.172.2.6 paf 122: if(head.count())
1.172.2.14.2. (paf 123:): head[0]->split(*columns, 0, "\t", 1, String::L_AS_IS);
1.44 paf 124: }
125:
1.172.2.14.2. (paf 126:): Table* table(new Table(method_name, columns));
1.44 paf 127: // parse cells
1.172.2.6 paf 128:
129: ArrayString rows;
1.172.2.14.2. (paf 130:): data->split(rows, &pos_after, "\n", 1, String::L_AS_IS);
131:): Array_iterator<String*> i(rows);
1.98 parser 132: while(i.has_next()) {
1.172.2.6 paf 133: Table::element_type row(new ArrayString);
1.172.2.14.2. (paf 134:): const String& string=i.next();
1.118 parser 135: // remove comment lines
1.172.2.14.2. (paf 136:): if(!string->length())
1.44 paf 137: continue;
138:
1.172.2.14.2. (paf 139:): string->split(*row, 0, "\t", 1, String::L_AS_IS);
1.172.2.6 paf 140: *table+=row;
1.17 paf 141: }
1.1 paf 142:
1.44 paf 143: // replace any previous table value
1.172.2.6 paf 144: GET_SELF(r, VTable).set_table(table);
1.44 paf 145: }
146:
1.172.2.14.2. (paf 147:): static void _load(Request& r, MethodParams* params) {
148:): const String& first_param=params->as_string(0, "file name must be string");
1.168 paf 149: int filename_param_index=0;
1.172.2.6 paf 150: bool nameless=*first_param=="nameless";
1.168 paf 151: if(nameless)
152: filename_param_index++;
153: int options_param_index=filename_param_index+1;
154:
1.44 paf 155: // loading text
1.172.2.14.2. (paf 156:): char *data=file_read_text(r.charsets.source(),
1.172.2.10 paf 157: r.absolute(params->as_string(filename_param_index, "file name must be string")),
1.168 paf 158: true,
1.172.2.14.2. (paf 159:): options_param_index<params->count()?params->as_no_junction(options_param_index, "additional params must be hash")->get_hash():0
1.168 paf 160: );
1.44 paf 161:
1.1 paf 162: // parse columns
1.172.2.6 paf 163: Table::columns_type columns;
1.1 paf 164: #ifndef NO_STRING_ORIGIN
1.172.2.6 paf 165: const String_fragment::Origin& origin=method_name->origin();
1.172.2.2 paf 166: const char* file=origin.file;
1.1 paf 167: uint line=origin.line;
168: #endif
1.168 paf 169: if(nameless) {
1.172.2.6 paf 170: columns=Table::columns_type(0); // nameless
1.1 paf 171: } else {
1.172.2.6 paf 172: columns=Table::columns_type(new ArrayString);
1.1 paf 173:
1.139 paf 174: while(char *row_chars=getrow(&data)) {
175: // remove empty&comment lines
176: if(!*row_chars || *row_chars == '#')
177: continue;
1.1 paf 178: do {
1.172.2.14.2. (paf 179:): const String& name(new String);
1.45 paf 180: name->APPEND_TAINTED(lsplit(&row_chars, '\t'), 0, file, line++);
1.1 paf 181: *columns+=name;
182: } while(row_chars);
1.139 paf 183:
184: break;
185: }
1.1 paf 186: }
187:
188: // parse cells
1.172.2.14.2. (paf 189:): Table* table(new Table(method_name, columns));
1.1 paf 190: char *row_chars;
191: while(row_chars=getrow(&data)) {
1.118 parser 192: // remove empty&comment lines
193: if(!*row_chars || *row_chars == '#')
1.28 paf 194: continue;
1.172.2.6 paf 195: Table::element_type row(new ArrayString);
1.1 paf 196: while(char *cell_chars=lsplit(&row_chars, '\t')) {
1.172.2.14.2. (paf 197:): const String& cell(new String);
1.44 paf 198: cell->APPEND_TAINTED(cell_chars, 0, file, line);
1.1 paf 199: *row+=cell;
200: }
1.107 parser 201: #ifndef NO_STRING_ORIGIN
1.1 paf 202: line++;
1.107 parser 203: #endif
1.172.2.6 paf 204: *table+=row;
1.1 paf 205: };
206:
207: // replace any previous table value
1.172.2.6 paf 208: GET_SELF(r, VTable).set_table(table);
1.1 paf 209: }
1.2 paf 210:
1.146 paf 211: /// @todo "x\nx" "xxx""xx"
1.172.2.14.2. (paf 212:): static void _save(Request& r, MethodParams* params) {
213:): Value& vfile_name=params->as_no_junction(params->count()-1, "file name must not be code");
1.22 paf 214:
1.172.2.14.2. (paf 215:): Table& table=GET_SELF(r, VTable).table();
1.31 paf 216:
1.129 paf 217: bool do_append=false;
1.172.2.6 paf 218: String sdata;
1.172.2.10 paf 219: if(params->count()==1) { // named output
1.31 paf 220: // write out names line
221: if(table.columns()) { // named table
1.172.2.14.2. (paf 222:): Array_iterator<String*> i(*table.columns());
1.98 parser 223: while(i.has_next()) {
1.172.2.14.2. (paf 224:): sdata.append(*i.next(), String::L_TABLE);
1.98 parser 225: if(i.has_next())
1.31 paf 226: sdata.APPEND_CONST("\t");
227: }
228: } else { // nameless table
1.172.2.6 paf 229: if(int lsize=table.count()?table[0]->count():0)
1.31 paf 230: for(int column=0; column<lsize; column++) {
1.172.2.14.2. (paf 231:): char *cindex_tab=new char[MAX_NUMBER];
232:): sdata.append(cindex_tab,
233:): snprintf(cindex_tab, MAX_NUMBER, "%d\t", column),
234:): String::L_CLEAN);
1.31 paf 235: }
236: else
237: sdata.APPEND_CONST("empty nameless table");
238: }
239: sdata.APPEND_CONST("\n");
1.129 paf 240: } else { // mode specified
1.172.2.14.2. (paf 241:): const String& mode=params->as_string(0, "mode must be string");
1.172.2.6 paf 242: if(*mode=="append")
1.129 paf 243: do_append=true;
1.172.2.6 paf 244: else if(*mode=="nameless")
1.129 paf 245: /*ok, already skipped names output*/;
246: else
1.146 paf 247: throw Exception("parser.runtime",
1.172.2.6 paf 248: mode,
1.129 paf 249: "unknown mode, must be 'append'");
250:
1.31 paf 251: }
252: // data lines
1.172.2.14.2. (paf 253:): Array_iterator<ArrayString*> i(table);
1.98 parser 254: while(i.has_next()) {
1.172.2.14.2. (paf 255:): Array_iterator<String*> c(*i.next());
1.98 parser 256: while(c.has_next()) {
1.172.2.14.2. (paf 257:): if(const String* s=c.next())
258:): sdata.append(*s, String::L_TABLE);
1.98 parser 259: if(c.has_next())
1.172.2.14.2. (paf 260:): sdata.append("\t", 1, String::L_CLEAN);
1.31 paf 261: }
1.172.2.14.2. (paf 262:): sdata.append("\n", 1, String::L_CLEAN);
1.31 paf 263: }
264:
265: // write
1.172.2.14.2. (paf 266:): file_write(r.absolute(vfile_name.as_string()),
267:): sdata.cstr(), sdata.length(), true, do_append);
1.22 paf 268: }
269:
1.172.2.14.2. (paf 270:): static void _count(Request& r, MethodParams* ) {
271:): int result=GET_SELF(r, VTable).table().count();
272:): r.write_no_lang(Value*(new VInt(result)));
1.6 paf 273: }
274:
1.172.2.14.2. (paf 275:): static void _line(Request& r, MethodParams* ) {
276:): int result=1+GET_SELF(r, VTable).table().current();
277:): r.write_no_lang(Value*(new VInt(result)));
1.6 paf 278: }
279:
1.172.2.14.2. (paf 280:): static void _offset(Request& r, MethodParams* params) {
281:): Table& table=GET_SELF(r, VTable).table();
1.172.2.10 paf 282: if(params->count()) {
1.133 paf 283: bool absolute=false;
1.172.2.10 paf 284: if(params->count()>1) {
1.172.2.14.2. (paf 285:): const String& whence=params->as_string(0, "whence must be string");
1.172.2.6 paf 286: if(*whence=="cur")
1.134 paf 287: absolute=false;
1.172.2.6 paf 288: else if(*whence=="set")
1.134 paf 289: absolute=true;
1.133 paf 290: else
1.146 paf 291: throw Exception("parser.runtime",
1.172.2.6 paf 292: whence,
1.134 paf 293: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 294: }
1.133 paf 295:
1.172.2.14.2. (paf 296:): Value* offset_expr=params->as_junction(params->count()-1, "offset must be expression");
1.172.2.6 paf 297: table.offset(absolute, r.process_to_value(offset_expr)->as_int());
1.151 paf 298: } else
1.172.2.14.2. (paf 299:): r.write_no_lang(Value*(new VInt(table.current())));
1.6 paf 300: }
301:
1.172.2.14.2. (paf 302:): static void _menu(Request& r, MethodParams* params) {
303:): Value* body_code=params->as_junction(0, "body must be code");
1.7 paf 304:
1.172.2.14.2. (paf 305:): Value* delim_maybe_code=params->count()>1?(*params)[1]:0;
1.7 paf 306:
1.172.2.14.2. (paf 307:): Table& table=GET_SELF(r, VTable).table();
1.7 paf 308: bool need_delim=false;
1.99 parser 309: int saved_current=table.current();
1.172.2.6 paf 310: int size=table.count();
1.99 parser 311: for(int row=0; row<size; row++) {
1.22 paf 312: table.set_current(row);
1.7 paf 313:
1.161 paf 314: StringOrValue sv_processed=r.process(body_code);
1.172.2.14.2. (paf 315:): const String& s_processed=sv_processed.get_string();
316:): if(delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body
1.161 paf 317: if(need_delim) // need delim & iteration produced string?
1.172.2.6 paf 318: r.write_pass_lang(r.process(delim_maybe_code));
1.7 paf 319: need_delim=true;
320: }
1.161 paf 321: r.write_pass_lang(sv_processed);
1.7 paf 322: }
1.99 parser 323: table.set_current(saved_current);
1.7 paf 324: }
325:
1.110 parser 326: #ifndef DOXYGEN
1.74 paf 327: struct Row_info {
1.166 paf 328: Request *r;
1.74 paf 329: Table *table;
1.172.2.14.2. (paf 330:): Value* key_code;
1.74 paf 331: int key_field;
1.172.2.6 paf 332: Array<int>* value_fields;
333: HashStringValue* hash;
1.163 paf 334: bool distinct;
1.167 paf 335: int row;
1.74 paf 336: };
1.110 parser 337: #endif
1.172.2.6 paf 338: static void table_row_to_hash(Table::element_type row, Row_info *info) {
1.172.2.14.2. (paf 339:): =info->r->pool();
1.172.2.6 paf 340:
1.172.2.14.2. (paf 341:): const String& key;
1.172.2.6 paf 342: if(info->key_code) {
343: info->table->set_current(info->row++); // change context row
344: StringOrValue sv_processed=info->r->process(info->key_code);
1.172.2.14.2. (paf 345:): key=sv_processed.as_string();
1.166 paf 346: } else
1.172.2.14.2. (paf 347:): key=info->key_field<row->count()?row->get(info->key_field):0;
1.166 paf 348:
349: if(!key)
350: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 351:
1.172.2.14.2. (paf 352:): VHash* vhash=new VHash;
1.172.2.6 paf 353: HashStringValue& hash=vhash->hash();
354: for(int i=0; i<info->value_fields->count(); i++) {
355: int value_field=info->value_fields->get(i);
356: if(value_field<row->count())
1.166 paf 357: hash.put(
1.172.2.6 paf 358: info->table->columns()->get(value_field),
1.172.2.14.2. (paf 359:): Value*(new VString(row->get(value_field))));
1.74 paf 360: }
1.166 paf 361:
1.172.2.6 paf 362: if(info->hash->put_dont_replace(key, vhash)) // put. existed?
363: if(!info->distinct)
1.166 paf 364: throw Exception("parser.runtime",
365: key,
366: "duplicate key");
1.74 paf 367: }
1.172.2.14.2. (paf 368:): static void _hash(Request& r, MethodParams* params) {
369:): Table& self_table=GET_SELF(r, VTable).table();
370:): VHash* result(new VHash);
1.172.2.6 paf 371: if(Table::columns_type columns=self_table.columns())
372: if(columns->count()>0) {
1.163 paf 373: bool distinct=false;
1.172.2.10 paf 374: int param_index=params->count()-1;
1.166 paf 375: if(param_index>0) {
1.172.2.6 paf 376: if(HashStringValue* options=
1.172.2.14.2. (paf 377:): params->as_no_junction(param_index, "param must not be code")->get_hash()) {
1.166 paf 378: --param_index;
379: int valid_options=0;
1.172.2.14.2. (paf 380:): if(Value* vdistinct=options->get(sql_distinct_name)) {
1.166 paf 381: valid_options++;
1.172.2.6 paf 382: distinct=r.process_to_value(vdistinct)->as_bool();
1.166 paf 383: }
1.172.2.6 paf 384: if(valid_options!=options->count())
1.166 paf 385: throw Exception("parser.runtime",
1.172.2.5 paf 386: method_name,
1.166 paf 387: "called with invalid option");
1.163 paf 388: }
389: }
390: if(param_index==2) // bad options param type
391: throw Exception("parser.runtime",
1.172.2.5 paf 392: method_name,
1.163 paf 393: "options must be hash");
394:
1.172.2.6 paf 395: Array<int> value_fields;
1.163 paf 396: if(param_index>0) {
1.172.2.14.2. (paf 397:): Value* value_fields_param=params->as_no_junction(param_index, "value field(s) must not be code");
1.172.2.6 paf 398: if(value_fields_param->is_string()) {
399: value_fields+=self_table.column_name2index(
1.172.2.14.2. (paf 400:): value_fields_param->as_string(), true);
1.172.2.6 paf 401: } else if(Table* value_fields_table=value_fields_param->get_table()) {
402: for(int i=0; i<value_fields_table->count(); i++) {
1.172.2.14.2. (paf 403:): const String& value_field_name=
1.172.2.6 paf 404: value_fields_table->get(i)->get(0);
1.123 parser 405: value_fields+=self_table.column_name2index(value_field_name, true);
406: }
407: } else
1.146 paf 408: throw Exception("parser.runtime",
1.172.2.5 paf 409: method_name,
1.123 parser 410: "value field(s) must be string or self_table"
411: );
412: } else { // by all columns, including key
1.172.2.6 paf 413: for(int i=0; i<columns->count(); i++)
1.123 parser 414: value_fields+=i;
1.74 paf 415: }
416:
1.172.2.6 paf 417:
418: {
419: Row_info info;
420: info.r=&r;
421: info.table=&self_table;
1.172.2.14.2. (paf 422:): Value* key_param=(*params)[0];
423:): info.key_code=key_param->get_junction()?key_param:0;
1.172.2.6 paf 424: info.key_field=info.key_code?-1
1.172.2.14.2. (paf 425:): :self_table.column_name2index(key_param->as_string(), true);
1.172.2.6 paf 426: info.value_fields=&value_fields;
427: info.hash=&result->hash();
428: info.distinct=distinct;
1.172.2.12 paf 429: info.row=0;
1.172.2.6 paf 430:
431: int saved_current=self_table.current();
432: self_table.for_each(table_row_to_hash, &info);
433: self_table.set_current(saved_current);
434: }
1.74 paf 435: }
1.97 parser 436: r.write_no_lang(result);
1.74 paf 437: }
438:
1.110 parser 439: #ifndef DOXYGEN
1.78 paf 440: struct Table_seq_item {
1.172.2.13 paf 441: ArrayString* row;
1.34 paf 442: union {
443: char *c_str;
444: double d;
445: } value;
1.32 paf 446: };
1.110 parser 447: #endif
1.34 paf 448: static int sort_cmp_string(const void *a, const void *b) {
449: return strcmp(
1.78 paf 450: static_cast<const Table_seq_item *>(a)->value.c_str,
451: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 452: );
453: }
454: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 455: double va=static_cast<const Table_seq_item *>(a)->value.d;
456: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 457: if(va<vb)
458: return -1;
459: else if(va>vb)
460: return +1;
461: else
462: return 0;
463: }
1.172.2.14.2. (paf 464:): static void _sort(Request& r, MethodParams* params) {
1.172.2.6 paf 465: Pool local_pool;
1.172.2.14.2. (paf 466:): Value* key_maker=params->as_junction(0, "key-maker must be code");
1.61 paf 467:
1.172.2.10 paf 468: bool reverse=params->count()>1/*..[desc|asc|]*/?
469: reverse=*params->as_no_junction(1, "order must not be code")->as_string(&local_pool)=="desc":
1.104 parser 470: false; // default=asc
1.32 paf 471:
1.172.2.14.2. (paf 472:): Table& old_table=GET_SELF(r, VTable).table();
473:): Table* new_table(new Table(method_name, old_table.columns()));
1.34 paf 474:
1.172.2.6 paf 475: smart_ptr<Table_seq_item> seq(new Table_seq_item[old_table.count()]);
1.34 paf 476: int i;
477:
478: // calculate key values
479: bool key_values_are_strings=true;
1.172.2.6 paf 480: for(i=0; i<old_table.count(); i++) {
1.101 parser 481: old_table.set_current(i);
1.32 paf 482: // calculate key value
1.172.2.14.2. (paf 483:): seq[i].row=old_table[i];
484:): Value* value=r.process_to_value(key_maker)->as_expr_result(true/*return string as-is*/);
1.34 paf 485: if(i==0) // determining key values type by first one
1.172.2.6 paf 486: key_values_are_strings=value->is_string();
1.34 paf 487:
488: if(key_values_are_strings)
1.172.2.6 paf 489: seq[i].value.c_str=value->as_string(&local_pool)->cstr(local_pool);
1.34 paf 490: else
1.172.2.6 paf 491: seq[i].value.d=value->as_double();
1.32 paf 492: }
493: // sort keys
1.172.2.6 paf 494: _qsort(seq, old_table.count(), sizeof(Table_seq_item),
1.34 paf 495: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 496:
1.34 paf 497: // reorder table as they require in 'seq'
1.172.2.6 paf 498: for(i=0; i<old_table.count(); i++)
1.172.2.13 paf 499: *new_table+=Table::element_type(seq[reverse?old_table.count()-1-i:i].row);
1.32 paf 500:
1.116 parser 501: // replace any previous table value
1.172.2.6 paf 502: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 503: }
504:
1.172.2.14.2. (paf 505:): static bool _locate_expression(Request& r, MethodParams* params) {
1.172.2.10 paf 506: if(params->count()>1)
1.146 paf 507: throw Exception("parser.runtime",
1.172.2.5 paf 508: method_name,
1.145 paf 509: "locate by expression has only one parameter - expression");
510:
1.172.2.14.2. (paf 511:): Value* expression_code=params->as_junction(0, "must be expression");
1.145 paf 512:
1.172.2.14.2. (paf 513:): Table& table=GET_SELF(r, VTable).table();
1.145 paf 514: int saved_current=table.current();
1.172.2.6 paf 515: int size=table.count();
1.145 paf 516: for(int row=0; row<size; row++) {
517: table.set_current(row);
518:
1.172.2.6 paf 519: if(r.process_to_value(expression_code)->as_bool())
1.145 paf 520: return true;
521: }
522: table.set_current(saved_current);
523: return false;
524: }
1.172.2.14.2. (paf 525:): static bool _locate_name_value(Request& r, MethodParams* params) {
1.172.2.10 paf 526: if(params->count()>2)
1.146 paf 527: throw Exception("parser.runtime",
1.172.2.5 paf 528: method_name,
1.145 paf 529: "locate by name and value has only two parameters - name and value");
1.72 paf 530:
1.172.2.14.2. (paf 531:): Table& table=GET_SELF(r, VTable).table();
1.145 paf 532: return table.locate(
1.172.2.10 paf 533: params->as_string(0, "column name must be string"),
534: params->as_string(1, "value must be string")
1.145 paf 535: );
536: }
1.172.2.14.2. (paf 537:): static void _locate(Request& r, MethodParams* params) {
1.172.2.10 paf 538: bool result=(*params)[0]->get_junction()?
1.145 paf 539: _locate_expression(r, method_name, params) :
1.151 paf 540: _locate_name_value(r, method_name, params);
1.172.2.14.2. (paf 541:): r.write_no_lang(Value*(new VBool(result)));
1.37 paf 542: }
543:
1.172.2.14.2. (paf 544:): static void _flip(Request& r, MethodParams* params) {
545:): Table& old_table=GET_SELF(r, VTable).table();
546:): Table* new_table(new Table(method_name, old_table.columns()));
1.172.2.6 paf 547: if(old_table.count())
548: if(int old_cols=old_table[0]->count())
1.39 paf 549: for(int column=0; column<old_cols; column++) {
1.172.2.6 paf 550: Table::element_type new_row(new ArrayString(old_table.count()));
551: for(int i=0; i<old_table.count(); i++) {
552: Table::element_type old_row=old_table[i];
1.172.2.14.2. (paf 553:): *new_row+=column<old_row->count()?old_row->get(column):String* (new String);
1.39 paf 554: }
1.172.2.6 paf 555: *new_table+=new_row;
1.39 paf 556: }
557:
1.172.2.14.2. (paf 558:): r.write_no_lang(Value*(new VTable(new_table)));
1.39 paf 559: }
560:
1.172.2.14.2. (paf 561:): static void _append(Request& r, MethodParams* params) {
1.134 paf 562: // data
1.172.2.14.2. (paf 563:): Temp_lang temp_lang(r, String::L_PASS_APPENDED);
564:): const String& string=r.process_to_string(params->as_junction(0, "body must be code"));
1.41 paf 565:
566: // parse cells
1.172.2.14.2. (paf 567:): ArrayString& row(new ArrayString);
568:): string->split(*row, 0, "\t", 1, String::L_AS_IS);
1.41 paf 569:
1.172.2.14.2. (paf 570:): GET_SELF(r, VTable).table()+=row;
1.41 paf 571: }
572:
1.172.2.14.2. (paf 573:): static void _join(Request& r, MethodParams* params) {
1.42 paf 574:
1.172.2.10 paf 575: Table* maybe_src=params->as_no_junction(0, "table ref must not be code")->get_table();
1.42 paf 576: if(!maybe_src)
1.146 paf 577: throw Exception("parser.runtime",
1.172.2.5 paf 578: method_name,
1.42 paf 579: "source is not a table");
580:
581: Table& src=*maybe_src;
1.172.2.14.2. (paf 582:): Table& dest=GET_SELF(r, VTable).table();
1.42 paf 583: if(&src == &dest)
1.146 paf 584: throw Exception("parser.runtime",
1.172.2.5 paf 585: method_name,
1.42 paf 586: "source and destination are same table");
587:
1.157 paf 588: int offset, limit;
589: get_copy_options(r, method_name, params, 1, src,
590: offset, limit);
591:
1.172.2.6 paf 592: if(Table::columns_type dest_columns=dest.columns()) { // dest is named
1.42 paf 593: int saved_src_current=src.current();
1.172.2.6 paf 594: int m=src.count()-offset;
1.157 paf 595: if(!limit || limit>m)
596: limit=m;
597: int end=offset+limit;
598: for(int src_row=offset; src_row<end; src_row++) {
1.42 paf 599: src.set_current(src_row);
1.172.2.6 paf 600: Table::element_type dest_row(new ArrayString(src.count()));
601: for(int dest_column=0; dest_column<dest_columns->count(); dest_column++) {
1.172.2.14.2. (paf 602:): const String& src_item=src.item(dest_columns->get(dest_column));
603:): *dest_row+=src_item?src_item:String* (new String);
1.140 paf 604: }
1.172.2.6 paf 605: dest+=dest_row;
1.42 paf 606: }
607: src.set_current(saved_src_current);
608: } else { // dest is nameless
1.172.2.6 paf 609: for(int src_row=0; src_row<src.count(); src_row++)
610: dest+=src[src_row];
1.42 paf 611: }
612: }
613:
1.94 parser 614: #ifndef DOXYGEN
1.169 paf 615: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.172.2.14.2. (paf 616:): const String& method_name;
617:): const String& statement_string; const char* statement_cstr;
618:): ArrayString& columns;
1.172.2.6 paf 619: ArrayString* row;
620: public:
1.172.2.14.2. (paf 621:): Table* table;
1.94 parser 622: public:
1.172.2.14.2. (paf 623:): Table_sql_event_handlers(const String& amethod_name,
624:): const String& astatement_string, const char* astatement_cstr) :
1.94 parser 625: method_name(amethod_name),
1.172.2.14 paf 626: statement_string(astatement_string), statement_cstr(astatement_cstr),
627: columns(new ArrayString), row(0) {
628: }
1.94 parser 629:
1.170 paf 630: bool add_column(SQL_Error& error, void *ptr, size_t size) {
631: try {
1.172.2.14.2. (paf 632:): const String& column(new String);
1.170 paf 633: column->APPEND_TAINTED(
1.172.2.2 paf 634: (const char* )ptr, size,
1.170 paf 635: statement_cstr, 0);
1.172.2.6 paf 636: *columns+=column;
1.170 paf 637: return false;
638: } catch(...) {
639: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
640: return true;
641: }
642: }
643: bool before_rows(SQL_Error& error) {
644: try {
1.172.2.14.2. (paf 645:): table=Table*(new Table( method_name, columns));
1.170 paf 646: return false;
647: } catch(...) {
648: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
649: return true;
650: }
651: }
652: bool add_row(SQL_Error& error) {
653: try {
1.172.2.14.2. (paf 654:): *table+=(ArrayString* (row=new ArrayString));
1.170 paf 655: return false;
656: } catch(...) {
657: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
658: return true;
659: }
660: }
661: bool add_row_cell(SQL_Error& error, void *ptr, size_t size) {
662: try {
1.172.2.14.2. (paf 663:): const String& cell(new String);
1.170 paf 664: if(size)
665: cell->APPEND_TAINTED(
1.172.2.2 paf 666: (const char* )ptr, size,
1.172.2.6 paf 667: statement_cstr, table->count()-1);
668: *row+=cell;
1.170 paf 669: return false;
670: } catch(...) {
671: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
672: return true;
673: }
1.94 parser 674: }
675: };
676: #endif
1.172.2.14.2. (paf 677:): static void _sql(Request& r, MethodParams* params) {
1.49 paf 678:
1.172.2.14.2. (paf 679:): Value* statement=params->as_junction(0, "statement must be code");
1.49 paf 680:
1.53 paf 681: ulong limit=0;
1.100 parser 682: ulong offset=0;
1.172.2.10 paf 683: if(params->count()>1) {
1.172.2.14.2. (paf 684:): Value* voptions=params->as_no_junction(1, "options must be hash, not code");
1.172.2.6 paf 685: if(!voptions->is_string())
1.172.2.14.2. (paf 686:): if(HashStringValue* options=voptions->get_hash()) {
1.164 paf 687: int valid_options=0;
1.172.2.14.2. (paf 688:): if(Value* vlimit=options->get(sql_limit_name)) {
1.164 paf 689: valid_options++;
1.172.2.6 paf 690: limit=(ulong)r.process_to_value(vlimit)->as_double();
1.164 paf 691: }
1.172.2.14.2. (paf 692:): if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 693: valid_options++;
1.172.2.6 paf 694: offset=(ulong)r.process_to_value(voffset)->as_double();
1.164 paf 695: }
1.172.2.6 paf 696: if(valid_options!=options->count())
1.164 paf 697: throw Exception("parser.runtime",
1.172.2.5 paf 698: method_name,
1.164 paf 699: "called with invalid option");
1.109 parser 700: } else
1.146 paf 701: throw Exception("parser.runtime",
1.172.2.5 paf 702: method_name,
1.109 parser 703: "options must be hash");
1.49 paf 704: }
705:
1.172.2.14.2. (paf 706:): Temp_lang temp_lang(r, String::L_SQL);
707:): const String& statement_string=r.process_to_string(statement);
1.172.2.2 paf 708: const char* statement_cstr=
1.172.2.14.2. (paf 709:): statement_string->cstr(String::L_UNSPECIFIED, r.connection(method_name));
1.172.2.14 paf 710: Table_sql_event_handlers handlers(method_name,
1.94 parser 711: statement_string, statement_cstr);
1.135 paf 712: #ifdef RESOURCES_DEBUG
713: struct timeval mt[2];
714: //measure:before
715: gettimeofday(&mt[0],NULL);
716: #endif
1.172.2.6 paf 717: r.connection(method_name)->query(
1.160 paf 718: statement_cstr, offset, limit,
719: handlers,
720: statement_string);
1.135 paf 721:
722: #ifdef RESOURCES_DEBUG
723: //measure:after connect
724: gettimeofday(&mt[1],NULL);
725:
726: double t[2];
727: for(int i=0;i<2;i++)
728: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
729:
730: r.sql_request_time+=t[1]-t[0];
731: #endif
1.96 parser 732:
1.172.2.14.2. (paf 733:): Table* result=
1.96 parser 734: handlers.table?handlers.table: // query resulted in table? return it
1.172.2.14.2. (paf 735:): Table*(new Table(method_name, Table::columns_type(0))); // query returned no table, fake it
1.49 paf 736:
737: // replace any previous table value
1.172.2.6 paf 738: GET_SELF(r, VTable).set_table(result);
1.49 paf 739: }
740:
1.172.2.14.2. (paf 741:): static void _columns(Request& r, MethodParams* ) {
1.88 parser 742:
1.172.2.6 paf 743: Table::columns_type result_columns(new ArrayString);
1.172.2.14.2. (paf 744:): *result_columns+=String* (new String("column"));
745:): Table* result_table(new Table(method_name, result_columns));
1.172.2.6 paf 746:
1.172.2.14.2. (paf 747:): Table& source_table=GET_SELF(r, VTable).table();
1.172.2.6 paf 748: if(Table::columns_type source_columns=source_table.columns()) {
1.172.2.14.2. (paf 749:): Array_iterator<String*> i(*source_columns);
1.98 parser 750: while(i.has_next()) {
1.172.2.6 paf 751: Table::element_type result_row(new ArrayString);
752: *result_row+=i.next();
753: *result_table+=result_row;
1.88 parser 754: }
755: }
756:
1.172.2.14.2. (paf 757:): r.write_no_lang(Value*(new VTable(result_table)));
1.88 parser 758: }
759:
1.172.2.14.2. (paf 760:): static void _select(Request& r, MethodParams* params) {
1.148 paf 761:
1.172.2.14.2. (paf 762:): Value* vcondition=params->as_junction(0, "condition must be expression");
1.148 paf 763:
1.172.2.14.2. (paf 764:): Table& source_table=GET_SELF(r, VTable).table();
765:): Table* result_table(new Table(
1.148 paf 766: source_table.origin_string(),
767: source_table.columns()
1.172.2.6 paf 768: ));
1.148 paf 769:
770: int saved_current=source_table.current();
1.172.2.6 paf 771: int size=source_table.count();
1.148 paf 772: for(int row=0; row<size; row++) {
773: source_table.set_current(row);
774:
1.150 paf 775: bool condition=r.process_to_value(vcondition,
1.149 paf 776: /*0/*no name* /,*/
1.172.2.6 paf 777: false/*don't intercept string*/)->as_bool();
1.148 paf 778:
779: if(condition) // ...condition is true=
1.172.2.6 paf 780: *result_table+=source_table[row]; // =green light to go to result
1.148 paf 781: }
782: source_table.set_current(saved_current);
783:
1.172.2.14.2. (paf 784:): r.write_no_lang(Value*(new VTable(result_table)));
1.148 paf 785: }
786:
1.66 paf 787: // constructor
788:
1.172.2.6 paf 789: MTable::MTable(): Methoded("table") {
1.142 paf 790: // ^table::create{data}
791: // ^table::create[nameless]{data}
792: // ^table::create[table]
793: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 2);
794: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
795: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 2);
1.2 paf 796:
1.142 paf 797: // ^table::load[file]
798: // ^table::load[nameless;file]
1.168 paf 799: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 800:
801: // ^table.save[file]
802: // ^table.save[nameless;file]
1.66 paf 803: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
1.6 paf 804:
805: // ^table.count[]
1.66 paf 806: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 807:
808: // ^table.line[]
1.66 paf 809: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 810:
1.10 paf 811: // ^table.offset[]
1.133 paf 812: // ^table.offset(offset)
813: // ^table.offset[cur|set](offset)
814: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 815:
1.10 paf 816: // ^table.menu{code}
817: // ^table.menu{code}[delim]
1.66 paf 818: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 819:
1.79 paf 820: // ^table:hash[key field name]
1.123 parser 821: // ^table:hash[key field name][value field name(s) string/table]
1.163 paf 822: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 823:
1.102 parser 824: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
825: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 826: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 827:
1.36 paf 828: // ^table.locate[field;value]
1.145 paf 829: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 2);
1.39 paf 830:
831: // ^table.flip[]
1.66 paf 832: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 833:
834: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 835: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 836:
1.157 paf 837: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
838: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 839:
840:
1.100 parser 841: // ^table:sql[query]
842: // ^table:sql[query][$.limit(1) $.offset(2)]
843: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 844:
845: // ^table:columns[]
846: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 0);
1.148 paf 847:
848: // ^table.select(expression) = table
849: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.40 paf 850: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to table.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / classes