Annotation of parser3/src/classes/table.C, revision 1.172.2.6
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:
1.172.2.6! paf 8: static const char* IDENT_TABLE_C="$Date: 2003/02/04 15:15:02 $";
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:
22: class MTable : public Methoded {
23: public: // VStateless_class
1.172.2.1 paf 24: ValuePtr create_new_value() { return ValuePtr(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:
! 35: MethodedPtr table_class(new MTable);
! 36:
1.1 paf 37: // methods
1.66 paf 38:
1.172.2.3 paf 39: static void get_copy_options(Request& r, StringPtr method_name, MethodParams& params, int param_index,
1.157 paf 40: const Table& source,
41: int& offset,
42: int& limit) {
1.172.2.6! paf 43: Pool& pool=r.pool();
! 44:
1.157 paf 45: offset=0;
46: limit=0;
1.172.2.3 paf 47: if(params.count()<=param_index)
1.157 paf 48: return;
49:
1.172.2.6! paf 50: ValuePtr voptions=params.as_no_junction(param_index, "options must be hash, not code");
! 51: if(!voptions->is_string()) {
! 52: if(HashStringValue* options=voptions->get_hash(method_name)) {
1.164 paf 53: int valid_options=0;
1.172.2.6! paf 54: if(ValuePtr voffset=options->get(sql_offset_name)) {
1.164 paf 55: valid_options++;
1.157 paf 56: if(voffset->is_string()) {
1.172.2.6! paf 57: StringPtr soffset=voffset->get_string(&pool);
! 58: if(*soffset == "cur")
1.157 paf 59: offset=source.current();
60: else
61: throw Exception("parser.runtime",
1.172.2.6! paf 62: soffset,
1.157 paf 63: "must be 'cur' string or expression");
64: } else
1.172.2.6! paf 65: offset=r.process_to_value(voffset)->as_int();
1.164 paf 66: }
1.172.2.6! paf 67: if(ValuePtr vlimit=options->get(sql_limit_name)) {
1.164 paf 68: valid_options++;
1.172.2.6! paf 69: limit=r.process_to_value(vlimit)->as_int();
1.164 paf 70: }
1.172.2.6! paf 71: if(valid_options!=options->count())
1.164 paf 72: throw Exception("parser.runtime",
1.172.2.5 paf 73: method_name,
1.164 paf 74: "called with invalid option");
1.157 paf 75: } else
76: throw Exception("parser.runtime",
1.172.2.5 paf 77: method_name,
1.157 paf 78: "options must be hash");
1.158 paf 79: }
80: if(!limit) // zero limit = sould be 'nothing to copy', for methods zero means 'all'
81: limit=-1; // thus fixing
1.157 paf 82: }
83:
1.172.2.3 paf 84: static void _create(Request& r, StringPtr method_name, MethodParams& params) {
1.1 paf 85: Pool& pool=r.pool();
1.157 paf 86: // clone/copy part?
1.172.2.6! paf 87: if(const Table *source=params[0]->get_table()) {
1.157 paf 88: int offset, limit;
89: get_copy_options(r, method_name, params, 1, *source,
90: offset, limit);
1.172.2.6! paf 91: GET_SELF(r, VTable).set_table(TablePtr(new Table(*source, offset, limit)));
1.157 paf 92: return;
93: }
1.142 paf 94:
1.1 paf 95: // data is last parameter
1.45 paf 96: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.172.2.6! paf 97: StringPtr data=
1.172.2.3 paf 98: r.process_to_string(params.as_junction(params.count()-1, "body must be code"));
1.44 paf 99:
100: size_t pos_after=0;
101: // parse columns
1.172.2.6! paf 102: Table::columns_type columns;
1.172.2.3 paf 103: if(params.count()==2) {
1.172.2.6! paf 104: columns=Table::columns_type(0); // nameless
1.21 paf 105: } else {
1.172.2.6! paf 106: columns=Table::columns_type(new ArrayString);
1.44 paf 107:
1.172.2.6! paf 108: ArrayString head;
! 109: data->split(head, &pos_after, "\n", 1, String::UL_AS_IS, 1);
! 110: if(head.count())
! 111: head[0]->split(*columns, 0, "\t", 1, String::UL_AS_IS);
1.44 paf 112: }
113:
1.172.2.6! paf 114: TablePtr table(new Table(method_name, columns));
1.44 paf 115: // parse cells
1.172.2.6! paf 116:
! 117: ArrayString rows;
! 118: data->split(rows, &pos_after, "\n", 1, String::UL_AS_IS);
! 119: Array_iterator<StringPtr> i(rows);
1.98 parser 120: while(i.has_next()) {
1.172.2.6! paf 121: Table::element_type row(new ArrayString);
! 122: StringPtr string=i.next();
1.118 parser 123: // remove comment lines
1.172.2.6! paf 124: if(!string->size())
1.44 paf 125: continue;
126:
1.172.2.6! paf 127: string->split(*row, 0, "\t", 1, String::UL_AS_IS);
! 128: *table+=row;
1.17 paf 129: }
1.1 paf 130:
1.44 paf 131: // replace any previous table value
1.172.2.6! paf 132: GET_SELF(r, VTable).set_table(table);
1.44 paf 133: }
134:
1.172.2.3 paf 135: static void _load(Request& r, StringPtr method_name, MethodParams& params) {
1.44 paf 136: Pool& pool=r.pool();
1.172.2.6! paf 137: StringPtr first_param=params.as_string(0, "file name must be string");
1.168 paf 138: int filename_param_index=0;
1.172.2.6! paf 139: bool nameless=*first_param=="nameless";
1.168 paf 140: if(nameless)
141: filename_param_index++;
142: int options_param_index=filename_param_index+1;
143:
1.44 paf 144: // loading text
1.172.2.6! paf 145: char *data=file_read_text(pool, r.charsets.source(),
1.172.2.3 paf 146: r.absolute(params.as_string(filename_param_index, "file name must be string")),
1.168 paf 147: true,
1.172.2.6! paf 148: options_param_index<params.count()?params.as_no_junction(options_param_index, "additional params must be hash")->get_hash(method_name):0
1.168 paf 149: );
1.44 paf 150:
1.1 paf 151: // parse columns
1.172.2.6! paf 152: Table::columns_type columns;
1.1 paf 153: #ifndef NO_STRING_ORIGIN
1.172.2.6! paf 154: const String_fragment::Origin& origin=method_name->origin();
1.172.2.2 paf 155: const char* file=origin.file;
1.1 paf 156: uint line=origin.line;
157: #endif
1.168 paf 158: if(nameless) {
1.172.2.6! paf 159: columns=Table::columns_type(0); // nameless
1.1 paf 160: } else {
1.172.2.6! paf 161: columns=Table::columns_type(new ArrayString);
1.1 paf 162:
1.139 paf 163: while(char *row_chars=getrow(&data)) {
164: // remove empty&comment lines
165: if(!*row_chars || *row_chars == '#')
166: continue;
1.1 paf 167: do {
1.172.2.6! paf 168: StringPtr name(new String);
1.45 paf 169: name->APPEND_TAINTED(lsplit(&row_chars, '\t'), 0, file, line++);
1.1 paf 170: *columns+=name;
171: } while(row_chars);
1.139 paf 172:
173: break;
174: }
1.1 paf 175: }
176:
177: // parse cells
1.172.2.6! paf 178: TablePtr table(new Table(method_name, columns));
1.1 paf 179: char *row_chars;
180: while(row_chars=getrow(&data)) {
1.118 parser 181: // remove empty&comment lines
182: if(!*row_chars || *row_chars == '#')
1.28 paf 183: continue;
1.172.2.6! paf 184: Table::element_type row(new ArrayString);
1.1 paf 185: while(char *cell_chars=lsplit(&row_chars, '\t')) {
1.172.2.6! paf 186: StringPtr cell(new String);
1.44 paf 187: cell->APPEND_TAINTED(cell_chars, 0, file, line);
1.1 paf 188: *row+=cell;
189: }
1.107 parser 190: #ifndef NO_STRING_ORIGIN
1.1 paf 191: line++;
1.107 parser 192: #endif
1.172.2.6! paf 193: *table+=row;
1.1 paf 194: };
195:
196: // replace any previous table value
1.172.2.6! paf 197: GET_SELF(r, VTable).set_table(table);
1.1 paf 198: }
1.2 paf 199:
1.146 paf 200: /// @todo "x\nx" "xxx""xx"
1.172.2.3 paf 201: static void _save(Request& r, StringPtr method_name, MethodParams& params) {
1.22 paf 202: Pool& pool=r.pool();
1.172.2.6! paf 203: ValuePtr vfile_name=params.as_no_junction(params.count()-1,
1.61 paf 204: "file name must not be code");
1.22 paf 205:
1.172.2.6! paf 206: Table& table=GET_SELF(r, VTable).table(method_name);
1.31 paf 207:
1.129 paf 208: bool do_append=false;
1.172.2.6! paf 209: String sdata;
1.172.2.3 paf 210: if(params.count()==1) { // named output
1.31 paf 211: // write out names line
212: if(table.columns()) { // named table
1.172.2.6! paf 213: Array_iterator<StringPtr> i(*table.columns());
1.98 parser 214: while(i.has_next()) {
1.172.2.6! paf 215: sdata.append(*i.next(), String::UL_TABLE);
1.98 parser 216: if(i.has_next())
1.31 paf 217: sdata.APPEND_CONST("\t");
218: }
219: } else { // nameless table
1.172.2.6! paf 220: if(int lsize=table.count()?table[0]->count():0)
1.31 paf 221: for(int column=0; column<lsize; column++) {
1.106 parser 222: char *cindex_tab=(char *)pool.malloc(MAX_NUMBER);
1.31 paf 223: snprintf(cindex_tab, MAX_NUMBER, "%d\t", column);
224: sdata.APPEND_CONST(cindex_tab);
225: }
226: else
227: sdata.APPEND_CONST("empty nameless table");
228: }
229: sdata.APPEND_CONST("\n");
1.129 paf 230: } else { // mode specified
1.172.2.6! paf 231: StringPtr mode=params.as_string(0, "mode must be string");
! 232: if(*mode=="append")
1.129 paf 233: do_append=true;
1.172.2.6! paf 234: else if(*mode=="nameless")
1.129 paf 235: /*ok, already skipped names output*/;
236: else
1.146 paf 237: throw Exception("parser.runtime",
1.172.2.6! paf 238: mode,
1.129 paf 239: "unknown mode, must be 'append'");
240:
1.31 paf 241: }
242: // data lines
1.172.2.6! paf 243: Array_iterator<ArrayStringPtr> i(table);
1.98 parser 244: while(i.has_next()) {
1.172.2.6! paf 245: Array_iterator<StringPtr> c(*i.next());
1.98 parser 246: while(c.has_next()) {
1.172.2.6! paf 247: if(StringPtr s=c.next())
! 248: sdata.append(*s, String::UL_TABLE);
1.98 parser 249: if(c.has_next())
1.31 paf 250: sdata.APPEND_CONST("\t");
251: }
252: sdata.APPEND_CONST("\n");
253: }
254:
255: // write
1.172.2.6! paf 256: file_write(r.absolute(vfile_name->as_string(&pool)),
1.129 paf 257: sdata.cstr(), sdata.size(), true, do_append);
1.22 paf 258: }
259:
1.172.2.3 paf 260: static void _count(Request& r, StringPtr method_name, MethodParams& ) {
1.172.2.6! paf 261: int result=GET_SELF(r, VTable).table(method_name).count();
! 262: r.write_no_lang(ValuePtr(new VInt(result)));
1.6 paf 263: }
264:
1.172.2.3 paf 265: static void _line(Request& r, StringPtr method_name, MethodParams& ) {
1.172.2.6! paf 266: int result=1+GET_SELF(r, VTable).table(method_name).current();
! 267: r.write_no_lang(ValuePtr(new VInt(result)));
1.6 paf 268: }
269:
1.172.2.3 paf 270: static void _offset(Request& r, StringPtr method_name, MethodParams& params) {
1.6 paf 271: Pool& pool=r.pool();
1.172.2.6! paf 272: Table& table=GET_SELF(r, VTable).table(method_name);
1.172.2.3 paf 273: if(params.count()) {
1.133 paf 274: bool absolute=false;
1.172.2.3 paf 275: if(params.count()>1) {
1.172.2.6! paf 276: StringPtr whence=params.as_string(0, "whence must be string");
! 277: if(*whence=="cur")
1.134 paf 278: absolute=false;
1.172.2.6! paf 279: else if(*whence=="set")
1.134 paf 280: absolute=true;
1.133 paf 281: else
1.146 paf 282: throw Exception("parser.runtime",
1.172.2.6! paf 283: whence,
1.134 paf 284: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 285: }
1.133 paf 286:
1.172.2.6! paf 287: ValuePtr offset_expr=params.as_junction(params.count()-1, "offset must be expression");
! 288: table.offset(absolute, r.process_to_value(offset_expr)->as_int());
1.151 paf 289: } else
1.172.2.6! paf 290: r.write_no_lang(ValuePtr(new VInt(table.current())));
1.6 paf 291: }
292:
1.172.2.3 paf 293: static void _menu(Request& r, StringPtr method_name, MethodParams& params) {
1.172.2.6! paf 294: ValuePtr body_code=params.as_junction(0, "body must be code");
1.7 paf 295:
1.172.2.6! paf 296: ValuePtr delim_maybe_code=params.count()>1?params[1]:ValuePtr(0);
1.7 paf 297:
1.172.2.6! paf 298: Table& table=GET_SELF(r, VTable).table(method_name);
1.7 paf 299: bool need_delim=false;
1.99 parser 300: int saved_current=table.current();
1.172.2.6! paf 301: int size=table.count();
1.99 parser 302: for(int row=0; row<size; row++) {
1.22 paf 303: table.set_current(row);
1.7 paf 304:
1.161 paf 305: StringOrValue sv_processed=r.process(body_code);
1.172.2.6! paf 306: StringPtr s_processed=sv_processed.get_string();
1.161 paf 307: if(delim_maybe_code && s_processed && s_processed->size()) { // delimiter set and we have body
308: if(need_delim) // need delim & iteration produced string?
1.172.2.6! paf 309: r.write_pass_lang(r.process(delim_maybe_code));
1.7 paf 310: need_delim=true;
311: }
1.161 paf 312: r.write_pass_lang(sv_processed);
1.7 paf 313: }
1.99 parser 314: table.set_current(saved_current);
1.7 paf 315: }
316:
1.110 parser 317: #ifndef DOXYGEN
1.74 paf 318: struct Row_info {
1.166 paf 319: Request *r;
1.74 paf 320: Table *table;
1.172.2.6! paf 321: ValuePtr key_code;
1.74 paf 322: int key_field;
1.172.2.6! paf 323: Array<int>* value_fields;
! 324: HashStringValue* hash;
1.163 paf 325: bool distinct;
1.167 paf 326: int row;
1.74 paf 327: };
1.110 parser 328: #endif
1.172.2.6! paf 329: static void table_row_to_hash(Table::element_type row, Row_info *info) {
! 330: Pool& pool=info->r->pool();
! 331:
! 332: StringPtr key;
! 333: if(info->key_code) {
! 334: info->table->set_current(info->row++); // change context row
! 335: StringOrValue sv_processed=info->r->process(info->key_code);
! 336: key=sv_processed.as_string(&pool);
1.166 paf 337: } else
1.172.2.6! paf 338: key=info->key_field<row->count()?row->get(info->key_field):StringPtr(0);
1.166 paf 339:
340: if(!key)
341: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 342:
1.172.2.6! paf 343: VHashPtr vhash(new VHash);
! 344: HashStringValue& hash=vhash->hash();
! 345: for(int i=0; i<info->value_fields->count(); i++) {
! 346: int value_field=info->value_fields->get(i);
! 347: if(value_field<row->count())
1.166 paf 348: hash.put(
1.172.2.6! paf 349: info->table->columns()->get(value_field),
! 350: ValuePtr(new VString(row->get(value_field))));
1.74 paf 351: }
1.166 paf 352:
1.172.2.6! paf 353: if(info->hash->put_dont_replace(key, vhash)) // put. existed?
! 354: if(!info->distinct)
1.166 paf 355: throw Exception("parser.runtime",
356: key,
357: "duplicate key");
1.74 paf 358: }
1.172.2.3 paf 359: static void _hash(Request& r, StringPtr method_name, MethodParams& params) {
1.97 parser 360: Pool& pool=r.pool();
1.172.2.6! paf 361: Table& self_table=GET_SELF(r, VTable).table(method_name);
! 362: VHashPtr result(new VHash);
! 363: if(Table::columns_type columns=self_table.columns())
! 364: if(columns->count()>0) {
1.163 paf 365: bool distinct=false;
1.172.2.3 paf 366: int param_index=params.count()-1;
1.166 paf 367: if(param_index>0) {
1.172.2.6! paf 368: if(HashStringValue* options=
! 369: params.as_no_junction(param_index, "param must not be code")->get_hash(method_name)) {
1.166 paf 370: --param_index;
371: int valid_options=0;
1.172.2.6! paf 372: if(ValuePtr vdistinct=options->get(sql_distinct_name)) {
1.166 paf 373: valid_options++;
1.172.2.6! paf 374: distinct=r.process_to_value(vdistinct)->as_bool();
1.166 paf 375: }
1.172.2.6! paf 376: if(valid_options!=options->count())
1.166 paf 377: throw Exception("parser.runtime",
1.172.2.5 paf 378: method_name,
1.166 paf 379: "called with invalid option");
1.163 paf 380: }
381: }
382: if(param_index==2) // bad options param type
383: throw Exception("parser.runtime",
1.172.2.5 paf 384: method_name,
1.163 paf 385: "options must be hash");
386:
1.172.2.6! paf 387: Array<int> value_fields;
1.163 paf 388: if(param_index>0) {
1.172.2.6! paf 389: ValuePtr value_fields_param=params.as_no_junction(param_index, "value field(s) must not be code");
! 390: if(value_fields_param->is_string()) {
! 391: value_fields+=self_table.column_name2index(
! 392: value_fields_param->as_string(&pool), true);
! 393: } else if(Table* value_fields_table=value_fields_param->get_table()) {
! 394: for(int i=0; i<value_fields_table->count(); i++) {
! 395: StringPtr value_field_name=
! 396: value_fields_table->get(i)->get(0);
1.123 parser 397: value_fields+=self_table.column_name2index(value_field_name, true);
398: }
399: } else
1.146 paf 400: throw Exception("parser.runtime",
1.172.2.5 paf 401: method_name,
1.123 parser 402: "value field(s) must be string or self_table"
403: );
404: } else { // by all columns, including key
1.172.2.6! paf 405: for(int i=0; i<columns->count(); i++)
1.123 parser 406: value_fields+=i;
1.74 paf 407: }
408:
1.172.2.6! paf 409:
! 410: {
! 411: Row_info info;
! 412: info.r=&r;
! 413: info.table=&self_table;
! 414: ValuePtr key_param=params[0];
! 415: info.key_code=key_param->get_junction()?key_param:ValuePtr(0);
! 416: info.key_field=info.key_code?-1
! 417: :self_table.column_name2index(key_param->as_string(&pool), true);
! 418: info.value_fields=&value_fields;
! 419: info.hash=&result->hash();
! 420: info.distinct=distinct;
! 421:
! 422: int saved_current=self_table.current();
! 423: self_table.for_each(table_row_to_hash, &info);
! 424: self_table.set_current(saved_current);
! 425: }
1.74 paf 426: }
1.97 parser 427: r.write_no_lang(result);
1.74 paf 428: }
429:
1.110 parser 430: #ifndef DOXYGEN
1.78 paf 431: struct Table_seq_item {
1.172.2.6! paf 432: Table::element_type row;
1.34 paf 433: union {
434: char *c_str;
435: double d;
436: } value;
1.32 paf 437: };
1.110 parser 438: #endif
1.34 paf 439: static int sort_cmp_string(const void *a, const void *b) {
440: return strcmp(
1.78 paf 441: static_cast<const Table_seq_item *>(a)->value.c_str,
442: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 443: );
444: }
445: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 446: double va=static_cast<const Table_seq_item *>(a)->value.d;
447: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 448: if(va<vb)
449: return -1;
450: else if(va>vb)
451: return +1;
452: else
453: return 0;
454: }
1.172.2.3 paf 455: static void _sort(Request& r, StringPtr method_name, MethodParams& params) {
1.172.2.6! paf 456: Pool local_pool;
! 457: ValuePtr key_maker=params.as_junction(0, "key-maker must be code");
1.61 paf 458:
1.172.2.3 paf 459: bool reverse=params.count()>1/*..[desc|asc|]*/?
1.172.2.6! paf 460: reverse=*params.as_no_junction(1, "order must not be code")->as_string(&local_pool)=="desc":
1.104 parser 461: false; // default=asc
1.32 paf 462:
1.172.2.6! paf 463: Table& old_table=GET_SELF(r, VTable).table(method_name);
! 464: TablePtr new_table(new Table(method_name, old_table.columns()));
1.34 paf 465:
1.172.2.6! paf 466: smart_ptr<Table_seq_item> seq(new Table_seq_item[old_table.count()]);
1.34 paf 467: int i;
468:
469: // calculate key values
470: bool key_values_are_strings=true;
1.172.2.6! paf 471: for(i=0; i<old_table.count(); i++) {
1.101 parser 472: old_table.set_current(i);
1.32 paf 473: // calculate key value
1.172.2.6! paf 474: seq[i].row=old_table[i];
! 475: ValuePtr value=r.process_to_value(key_maker)->as_expr_result(true/*return string as-is*/);
1.34 paf 476: if(i==0) // determining key values type by first one
1.172.2.6! paf 477: key_values_are_strings=value->is_string();
1.34 paf 478:
479: if(key_values_are_strings)
1.172.2.6! paf 480: seq[i].value.c_str=value->as_string(&local_pool)->cstr(local_pool);
1.34 paf 481: else
1.172.2.6! paf 482: seq[i].value.d=value->as_double();
1.32 paf 483: }
484: // sort keys
1.172.2.6! paf 485: _qsort(seq, old_table.count(), sizeof(Table_seq_item),
1.34 paf 486: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 487:
1.34 paf 488: // reorder table as they require in 'seq'
1.172.2.6! paf 489: for(i=0; i<old_table.count(); i++)
! 490: *new_table+=seq[reverse?old_table.count()-1-i:i].row;
1.32 paf 491:
1.116 parser 492: // replace any previous table value
1.172.2.6! paf 493: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 494: }
495:
1.172.2.3 paf 496: static bool _locate_expression(Request& r, StringPtr method_name, MethodParams& params) {
497: if(params.count()>1)
1.146 paf 498: throw Exception("parser.runtime",
1.172.2.5 paf 499: method_name,
1.145 paf 500: "locate by expression has only one parameter - expression");
501:
1.172.2.6! paf 502: ValuePtr expression_code=params.as_junction(0, "must be expression");
1.145 paf 503:
1.172.2.6! paf 504: Table& table=GET_SELF(r, VTable).table(method_name);
1.145 paf 505: int saved_current=table.current();
1.172.2.6! paf 506: int size=table.count();
1.145 paf 507: for(int row=0; row<size; row++) {
508: table.set_current(row);
509:
1.172.2.6! paf 510: if(r.process_to_value(expression_code)->as_bool())
1.145 paf 511: return true;
512: }
513: table.set_current(saved_current);
514: return false;
515: }
1.172.2.3 paf 516: static bool _locate_name_value(Request& r, StringPtr method_name, MethodParams& params) {
517: if(params.count()>2)
1.146 paf 518: throw Exception("parser.runtime",
1.172.2.5 paf 519: method_name,
1.145 paf 520: "locate by name and value has only two parameters - name and value");
1.72 paf 521:
1.172.2.6! paf 522: Table& table=GET_SELF(r, VTable).table(method_name);
1.145 paf 523: return table.locate(
1.172.2.3 paf 524: params.as_string(0, "column name must be string"),
525: params.as_string(1, "value must be string")
1.145 paf 526: );
527: }
1.172.2.3 paf 528: static void _locate(Request& r, StringPtr method_name, MethodParams& params) {
1.145 paf 529: Pool& pool=r.pool();
1.172.2.6! paf 530: bool result=params[0]->get_junction()?
1.145 paf 531: _locate_expression(r, method_name, params) :
1.151 paf 532: _locate_name_value(r, method_name, params);
1.172.2.6! paf 533: r.write_no_lang(ValuePtr(new VBool(result)));
1.37 paf 534: }
535:
1.172.2.3 paf 536: static void _flip(Request& r, StringPtr method_name, MethodParams& params) {
1.39 paf 537: Pool& pool=r.pool();
1.172.2.6! paf 538: Table& old_table=GET_SELF(r, VTable).table(method_name);
! 539: TablePtr new_table(new Table(method_name, old_table.columns()));
! 540: if(old_table.count())
! 541: if(int old_cols=old_table[0]->count())
1.39 paf 542: for(int column=0; column<old_cols; column++) {
1.172.2.6! paf 543: Table::element_type new_row(new ArrayString(old_table.count()));
! 544: for(int i=0; i<old_table.count(); i++) {
! 545: Table::element_type old_row=old_table[i];
! 546: *new_row+=column<old_row->count()?old_row->get(column):StringPtr(new String);
1.39 paf 547: }
1.172.2.6! paf 548: *new_table+=new_row;
1.39 paf 549: }
550:
1.172.2.6! paf 551: r.write_no_lang(ValuePtr(new VTable(new_table)));
1.39 paf 552: }
553:
1.172.2.3 paf 554: static void _append(Request& r, StringPtr method_name, MethodParams& params) {
1.41 paf 555: Pool& pool=r.pool();
1.134 paf 556: // data
557: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.172.2.6! paf 558: StringPtr string=r.process_to_string(params.as_junction(0, "body must be code"));
1.41 paf 559:
560: // parse cells
1.172.2.6! paf 561: ArrayStringPtr row(new ArrayString);
! 562: string->split(*row, 0, "\t", 1, String::UL_AS_IS);
1.41 paf 563:
1.172.2.6! paf 564: GET_SELF(r, VTable).table(method_name)+=row;
1.41 paf 565: }
566:
1.172.2.3 paf 567: static void _join(Request& r, StringPtr method_name, MethodParams& params) {
1.42 paf 568: Pool& pool=r.pool();
569:
1.172.2.6! paf 570: Table* maybe_src=params.as_no_junction(0, "table ref must not be code")->get_table();
1.42 paf 571: if(!maybe_src)
1.146 paf 572: throw Exception("parser.runtime",
1.172.2.5 paf 573: method_name,
1.42 paf 574: "source is not a table");
575:
576: Table& src=*maybe_src;
1.172.2.6! paf 577: Table& dest=GET_SELF(r, VTable).table(method_name);
1.42 paf 578: if(&src == &dest)
1.146 paf 579: throw Exception("parser.runtime",
1.172.2.5 paf 580: method_name,
1.42 paf 581: "source and destination are same table");
582:
1.157 paf 583: int offset, limit;
584: get_copy_options(r, method_name, params, 1, src,
585: offset, limit);
586:
1.172.2.6! paf 587: if(Table::columns_type dest_columns=dest.columns()) { // dest is named
1.42 paf 588: int saved_src_current=src.current();
1.172.2.6! paf 589: int m=src.count()-offset;
1.157 paf 590: if(!limit || limit>m)
591: limit=m;
592: int end=offset+limit;
593: for(int src_row=offset; src_row<end; src_row++) {
1.42 paf 594: src.set_current(src_row);
1.172.2.6! paf 595: Table::element_type dest_row(new ArrayString(src.count()));
! 596: for(int dest_column=0; dest_column<dest_columns->count(); dest_column++) {
! 597: StringPtr src_item=src.item(dest_columns->get(dest_column));
! 598: *dest_row+=src_item?src_item:StringPtr(new String);
1.140 paf 599: }
1.172.2.6! paf 600: dest+=dest_row;
1.42 paf 601: }
602: src.set_current(saved_src_current);
603: } else { // dest is nameless
1.172.2.6! paf 604: for(int src_row=0; src_row<src.count(); src_row++)
! 605: dest+=src[src_row];
1.42 paf 606: }
607: }
608:
1.94 parser 609: #ifndef DOXYGEN
1.169 paf 610: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.172.2.6! paf 611: Pool& pool;
! 612: StringPtr method_name;
! 613: StringPtr statement_string; const char* statement_cstr;
! 614: ArrayStringPtr columns;
! 615: ArrayString* row;
! 616: public:
! 617: TablePtr table;
1.94 parser 618: public:
1.172.2.6! paf 619: Table_sql_event_handlers(Pool& apool, StringPtr amethod_name,
! 620: StringPtr astatement_string, const char* astatement_cstr) :
1.94 parser 621: pool(apool),
622: method_name(amethod_name),
623: statement_string(astatement_string),
624: statement_cstr(astatement_cstr),
1.172.2.6! paf 625: columns(new ArrayString)
! 626: {}
1.94 parser 627:
1.170 paf 628: bool add_column(SQL_Error& error, void *ptr, size_t size) {
629: try {
1.172.2.6! paf 630: StringPtr column(new String);
1.170 paf 631: column->APPEND_TAINTED(
1.172.2.2 paf 632: (const char* )ptr, size,
1.170 paf 633: statement_cstr, 0);
1.172.2.6! paf 634: *columns+=column;
1.170 paf 635: return false;
636: } catch(...) {
637: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
638: return true;
639: }
640: }
641: bool before_rows(SQL_Error& error) {
642: try {
1.172.2.6! paf 643: table=TablePtr(new Table( method_name, columns));
1.170 paf 644: return false;
645: } catch(...) {
646: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
647: return true;
648: }
649: }
650: bool add_row(SQL_Error& error) {
651: try {
1.172.2.6! paf 652: *table+=(ArrayStringPtr(row=new ArrayString));
1.170 paf 653: return false;
654: } catch(...) {
655: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
656: return true;
657: }
658: }
659: bool add_row_cell(SQL_Error& error, void *ptr, size_t size) {
660: try {
1.172.2.6! paf 661: StringPtr cell(new String);
1.170 paf 662: if(size)
663: cell->APPEND_TAINTED(
1.172.2.2 paf 664: (const char* )ptr, size,
1.172.2.6! paf 665: statement_cstr, table->count()-1);
! 666: *row+=cell;
1.170 paf 667: return false;
668: } catch(...) {
669: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
670: return true;
671: }
1.94 parser 672: }
673: };
674: #endif
1.172.2.3 paf 675: static void _sql(Request& r, StringPtr method_name, MethodParams& params) {
1.49 paf 676: Pool& pool=r.pool();
677:
1.172.2.6! paf 678: ValuePtr statement=params.as_junction(0, "statement must be code");
1.49 paf 679:
1.53 paf 680: ulong limit=0;
1.100 parser 681: ulong offset=0;
1.172.2.3 paf 682: if(params.count()>1) {
1.172.2.6! paf 683: ValuePtr voptions=params.as_no_junction(1, "options must be hash, not code");
! 684: if(!voptions->is_string())
! 685: if(HashStringValue* options=voptions->get_hash(method_name)) {
1.164 paf 686: int valid_options=0;
1.172.2.6! paf 687: if(ValuePtr vlimit=options->get(sql_limit_name)) {
1.164 paf 688: valid_options++;
1.172.2.6! paf 689: limit=(ulong)r.process_to_value(vlimit)->as_double();
1.164 paf 690: }
1.172.2.6! paf 691: if(ValuePtr voffset=options->get(sql_offset_name)) {
1.164 paf 692: valid_options++;
1.172.2.6! paf 693: offset=(ulong)r.process_to_value(voffset)->as_double();
1.164 paf 694: }
1.172.2.6! paf 695: if(valid_options!=options->count())
1.164 paf 696: throw Exception("parser.runtime",
1.172.2.5 paf 697: method_name,
1.164 paf 698: "called with invalid option");
1.109 parser 699: } else
1.146 paf 700: throw Exception("parser.runtime",
1.172.2.5 paf 701: method_name,
1.109 parser 702: "options must be hash");
1.49 paf 703: }
704:
1.54 paf 705: Temp_lang temp_lang(r, String::UL_SQL);
1.172.2.6! paf 706: StringPtr statement_string=r.process_to_string(statement);
1.172.2.2 paf 707: const char* statement_cstr=
1.172.2.6! paf 708: statement_string->cstr(pool, String::UL_UNSPECIFIED, r.connection(method_name));
1.94 parser 709: Table_sql_event_handlers handlers(pool, method_name,
710: statement_string, statement_cstr);
1.135 paf 711: #ifdef RESOURCES_DEBUG
712: struct timeval mt[2];
713: //measure:before
714: gettimeofday(&mt[0],NULL);
715: #endif
1.172.2.6! paf 716: r.connection(method_name)->query(
1.160 paf 717: statement_cstr, offset, limit,
718: handlers,
719: statement_string);
1.135 paf 720:
721: #ifdef RESOURCES_DEBUG
722: //measure:after connect
723: gettimeofday(&mt[1],NULL);
724:
725: double t[2];
726: for(int i=0;i<2;i++)
727: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
728:
729: r.sql_request_time+=t[1]-t[0];
730: #endif
1.96 parser 731:
1.172.2.6! paf 732: TablePtr result=
1.96 parser 733: handlers.table?handlers.table: // query resulted in table? return it
1.172.2.6! paf 734: TablePtr(new Table(method_name, Table::columns_type(0))); // query returned no table, fake it
1.49 paf 735:
736: // replace any previous table value
1.172.2.6! paf 737: GET_SELF(r, VTable).set_table(result);
1.49 paf 738: }
739:
1.172.2.3 paf 740: static void _columns(Request& r, StringPtr method_name, MethodParams& ) {
1.88 parser 741: Pool& pool=r.pool();
742:
1.172.2.6! paf 743: Table::columns_type result_columns(new ArrayString);
! 744: *result_columns+=StringPtr(new String("column"));
! 745: TablePtr result_table(new Table(method_name, result_columns));
! 746:
! 747: Table& source_table=GET_SELF(r, VTable).table(method_name);
! 748: if(Table::columns_type source_columns=source_table.columns()) {
! 749: Array_iterator<StringPtr> 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:
1.172.2.6! paf 757: r.write_no_lang(ValuePtr(new VTable(result_table)));
1.88 parser 758: }
759:
1.172.2.3 paf 760: static void _select(Request& r, StringPtr method_name, MethodParams& params) {
1.148 paf 761: Pool& pool=r.pool();
762:
1.172.2.6! paf 763: ValuePtr vcondition=params.as_junction(0, "condition must be expression");
1.148 paf 764:
1.172.2.6! paf 765: Table& source_table=GET_SELF(r, VTable).table(method_name);
! 766: TablePtr result_table(new Table(
1.148 paf 767: source_table.origin_string(),
768: source_table.columns()
1.172.2.6! paf 769: ));
1.148 paf 770:
771: int saved_current=source_table.current();
1.172.2.6! paf 772: int size=source_table.count();
1.148 paf 773: for(int row=0; row<size; row++) {
774: source_table.set_current(row);
775:
1.150 paf 776: bool condition=r.process_to_value(vcondition,
1.149 paf 777: /*0/*no name* /,*/
1.172.2.6! paf 778: false/*don't intercept string*/)->as_bool();
1.148 paf 779:
780: if(condition) // ...condition is true=
1.172.2.6! paf 781: *result_table+=source_table[row]; // =green light to go to result
1.148 paf 782: }
783: source_table.set_current(saved_current);
784:
1.172.2.6! paf 785: r.write_no_lang(ValuePtr(new VTable(result_table)));
1.148 paf 786: }
787:
1.66 paf 788: // constructor
789:
1.172.2.6! paf 790: MTable::MTable(): Methoded("table") {
1.142 paf 791: // ^table::create{data}
792: // ^table::create[nameless]{data}
793: // ^table::create[table]
794: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 2);
795: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
796: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 2);
1.2 paf 797:
1.142 paf 798: // ^table::load[file]
799: // ^table::load[nameless;file]
1.168 paf 800: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 801:
802: // ^table.save[file]
803: // ^table.save[nameless;file]
1.66 paf 804: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
1.6 paf 805:
806: // ^table.count[]
1.66 paf 807: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 808:
809: // ^table.line[]
1.66 paf 810: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 811:
1.10 paf 812: // ^table.offset[]
1.133 paf 813: // ^table.offset(offset)
814: // ^table.offset[cur|set](offset)
815: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 816:
1.10 paf 817: // ^table.menu{code}
818: // ^table.menu{code}[delim]
1.66 paf 819: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 820:
1.79 paf 821: // ^table:hash[key field name]
1.123 parser 822: // ^table:hash[key field name][value field name(s) string/table]
1.163 paf 823: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 824:
1.102 parser 825: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
826: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 827: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 828:
1.36 paf 829: // ^table.locate[field;value]
1.145 paf 830: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 2);
1.39 paf 831:
832: // ^table.flip[]
1.66 paf 833: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 834:
835: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 836: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 837:
1.157 paf 838: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
839: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 840:
841:
1.100 parser 842: // ^table:sql[query]
843: // ^table:sql[query][$.limit(1) $.offset(2)]
844: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 845:
846: // ^table:columns[]
847: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 0);
1.148 paf 848:
849: // ^table.select(expression) = table
850: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.40 paf 851: }
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