Annotation of parser3/src/classes/table.C, revision 1.172.2.14.2.12
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. 2(paf 8:3): static const char* IDENT_TABLE_C="$Date: 2003/03/24 10:31:17 $";
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(SQL_LIMIT_NAME);
47:): const String sql_offset_name(SQL_OFFSET_NAME);
48:): const String sql_default_name(SQL_DEFAULT_NAME);
49:): const String sql_distinct_name(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",
1.172.2.14.2. 0(paf 75:3): &soffset,
1.157 paf 76: "must be 'cur' string or expression");
77: } else
1.172.2.14.2. 1(paf 78:3): 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++;
1.172.2.14.2. 1(paf 82:3): 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",
1.172.2.14.2. (paf 88:): 0,
1.164 paf 89: "called with invalid option");
1.157 paf 90: } else
91: throw Exception("parser.runtime",
1.172.2.14.2. (paf 92:): 0,
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:): *columns+=new String(lsplit(&row_chars, '\t'), 0, String::L_TAINTED);
1.1 paf 180: } while(row_chars);
1.139 paf 181:
182: break;
183: }
1.1 paf 184: }
185:
186: // parse cells
1.172.2.14.2. (paf 187:): Table& table=*new Table(columns);
1.1 paf 188: char *row_chars;
189: while(row_chars=getrow(&data)) {
1.118 parser 190: // remove empty&comment lines
191: if(!*row_chars || *row_chars == '#')
1.28 paf 192: continue;
1.172.2.6 paf 193: Table::element_type row(new ArrayString);
1.1 paf 194: while(char *cell_chars=lsplit(&row_chars, '\t')) {
1.172.2.14.2. (paf 195:): *row+=new String(cell_chars, 0, true);
1.1 paf 196: }
1.107 parser 197: #ifndef NO_STRING_ORIGIN
1.1 paf 198: line++;
1.107 parser 199: #endif
1.172.2.14.2. (paf 200:): table+=row;
1.1 paf 201: };
202:
203: // replace any previous table value
1.172.2.6 paf 204: GET_SELF(r, VTable).set_table(table);
1.1 paf 205: }
1.2 paf 206:
1.146 paf 207: /// @todo "x\nx" "xxx""xx"
1.172.2.14.2. (paf 208:): static void _save(Request& r, MethodParams* params) {
209:): Value& vfile_name=params->as_no_junction(params->count()-1, "file name must not be code");
1.22 paf 210:
1.172.2.14.2. (paf 211:): Table& table=GET_SELF(r, VTable).table();
1.31 paf 212:
1.129 paf 213: bool do_append=false;
1.172.2.6 paf 214: String sdata;
1.172.2.10 paf 215: if(params->count()==1) { // named output
1.31 paf 216: // write out names line
217: if(table.columns()) { // named table
1.172.2.14.2. (paf 218:): Array_iterator<String*> i(*table.columns());
1.98 parser 219: while(i.has_next()) {
1.172.2.14.2. (paf 220:): sdata.append(*i.next(), String::L_TABLE);
1.98 parser 221: if(i.has_next())
1.31 paf 222: sdata.APPEND_CONST("\t");
223: }
224: } else { // nameless table
1.172.2.6 paf 225: if(int lsize=table.count()?table[0]->count():0)
1.31 paf 226: for(int column=0; column<lsize; column++) {
1.172.2.14.2. (paf 227:): char *cindex_tab=new char[MAX_NUMBER];
228:): sdata.append(cindex_tab,
229:): snprintf(cindex_tab, MAX_NUMBER, "%d\t", column),
230:): String::L_CLEAN);
1.31 paf 231: }
232: else
233: sdata.APPEND_CONST("empty nameless table");
234: }
235: sdata.APPEND_CONST("\n");
1.129 paf 236: } else { // mode specified
1.172.2.14.2. (paf 237:): const String& mode=params->as_string(0, "mode must be string");
1.172.2.6 paf 238: if(*mode=="append")
1.129 paf 239: do_append=true;
1.172.2.6 paf 240: else if(*mode=="nameless")
1.129 paf 241: /*ok, already skipped names output*/;
242: else
1.146 paf 243: throw Exception("parser.runtime",
1.172.2.6 paf 244: mode,
1.129 paf 245: "unknown mode, must be 'append'");
246:
1.31 paf 247: }
248: // data lines
1.172.2.14.2. (paf 249:): Array_iterator<ArrayString*> i(table);
1.98 parser 250: while(i.has_next()) {
1.172.2.14.2. (paf 251:): Array_iterator<String*> c(*i.next());
1.98 parser 252: while(c.has_next()) {
1.172.2.14.2. (paf 253:): if(const String* s=c.next())
254:): sdata.append(*s, String::L_TABLE);
1.98 parser 255: if(c.has_next())
1.172.2.14.2. (paf 256:): sdata.append("\t", 1, String::L_CLEAN);
1.31 paf 257: }
1.172.2.14.2. (paf 258:): sdata.append("\n", 1, String::L_CLEAN);
1.31 paf 259: }
260:
261: // write
1.172.2.14.2. (paf 262:): file_write(r.absolute(vfile_name.as_string()),
263:): sdata.cstr(), sdata.length(), true, do_append);
1.22 paf 264: }
265:
1.172.2.14.2. (paf 266:): static void _count(Request& r, MethodParams* ) {
267:): int result=GET_SELF(r, VTable).table().count();
268:): r.write_no_lang(Value*(new VInt(result)));
1.6 paf 269: }
270:
1.172.2.14.2. (paf 271:): static void _line(Request& r, MethodParams* ) {
272:): int result=1+GET_SELF(r, VTable).table().current();
273:): r.write_no_lang(Value*(new VInt(result)));
1.6 paf 274: }
275:
1.172.2.14.2. (paf 276:): static void _offset(Request& r, MethodParams* params) {
277:): Table& table=GET_SELF(r, VTable).table();
1.172.2.10 paf 278: if(params->count()) {
1.133 paf 279: bool absolute=false;
1.172.2.10 paf 280: if(params->count()>1) {
1.172.2.14.2. (paf 281:): const String& whence=params->as_string(0, "whence must be string");
1.172.2.6 paf 282: if(*whence=="cur")
1.134 paf 283: absolute=false;
1.172.2.6 paf 284: else if(*whence=="set")
1.134 paf 285: absolute=true;
1.133 paf 286: else
1.146 paf 287: throw Exception("parser.runtime",
1.172.2.6 paf 288: whence,
1.134 paf 289: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 290: }
1.133 paf 291:
1.172.2.14.2. 1(paf 292:3): Value& offset_expr=params->as_junction(params->count()-1, "offset must be expression");
0(paf 293:3): table.offset(absolute, r.process_to_value(offset_expr).as_int());
1.151 paf 294: } else
1.172.2.14.2. 0(paf 295:3): r.write_no_lang(*new VInt(table.current()));
1.6 paf 296: }
297:
1.172.2.14.2. (paf 298:): static void _menu(Request& r, MethodParams* params) {
299:): Value* body_code=params->as_junction(0, "body must be code");
1.7 paf 300:
1.172.2.14.2. (paf 301:): Value* delim_maybe_code=params->count()>1?(*params)[1]:0;
1.7 paf 302:
1.172.2.14.2. (paf 303:): Table& table=GET_SELF(r, VTable).table();
1.7 paf 304: bool need_delim=false;
1.99 parser 305: int saved_current=table.current();
1.172.2.6 paf 306: int size=table.count();
1.99 parser 307: for(int row=0; row<size; row++) {
1.22 paf 308: table.set_current(row);
1.7 paf 309:
1.161 paf 310: StringOrValue sv_processed=r.process(body_code);
1.172.2.14.2. (paf 311:): const String& s_processed=sv_processed.get_string();
312:): if(delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body
1.161 paf 313: if(need_delim) // need delim & iteration produced string?
1.172.2.6 paf 314: r.write_pass_lang(r.process(delim_maybe_code));
1.7 paf 315: need_delim=true;
316: }
1.161 paf 317: r.write_pass_lang(sv_processed);
1.7 paf 318: }
1.99 parser 319: table.set_current(saved_current);
1.7 paf 320: }
321:
1.110 parser 322: #ifndef DOXYGEN
1.74 paf 323: struct Row_info {
1.166 paf 324: Request *r;
1.74 paf 325: Table *table;
1.172.2.14.2. (paf 326:): Value* key_code;
1.74 paf 327: int key_field;
1.172.2.6 paf 328: Array<int>* value_fields;
329: HashStringValue* hash;
1.163 paf 330: bool distinct;
1.167 paf 331: int row;
1.74 paf 332: };
1.110 parser 333: #endif
1.172.2.6 paf 334: static void table_row_to_hash(Table::element_type row, Row_info *info) {
1.172.2.14.2. (paf 335:): const String& key;
1.172.2.6 paf 336: if(info->key_code) {
337: info->table->set_current(info->row++); // change context row
338: StringOrValue sv_processed=info->r->process(info->key_code);
1.172.2.14.2. (paf 339:): key=sv_processed.as_string();
1.166 paf 340: } else
1.172.2.14.2. (paf 341:): key=info->key_field<row->count()?row->get(info->key_field):0;
1.166 paf 342:
343: if(!key)
344: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 345:
1.172.2.14.2. (paf 346:): VHash* vhash=new VHash;
1.172.2.6 paf 347: HashStringValue& hash=vhash->hash();
348: for(int i=0; i<info->value_fields->count(); i++) {
349: int value_field=info->value_fields->get(i);
350: if(value_field<row->count())
1.166 paf 351: hash.put(
1.172.2.6 paf 352: info->table->columns()->get(value_field),
1.172.2.14.2. 2(paf 353:3): new VString(row->get(value_field)));
1.74 paf 354: }
1.166 paf 355:
1.172.2.6 paf 356: if(info->hash->put_dont_replace(key, vhash)) // put. existed?
357: if(!info->distinct)
1.166 paf 358: throw Exception("parser.runtime",
1.172.2.14.2. (paf 359:): &key,
1.166 paf 360: "duplicate key");
1.74 paf 361: }
1.172.2.14.2. (paf 362:): static void _hash(Request& r, MethodParams* params) {
363:): Table& self_table=GET_SELF(r, VTable).table();
364:): VHash* result(new VHash);
1.172.2.6 paf 365: if(Table::columns_type columns=self_table.columns())
366: if(columns->count()>0) {
1.163 paf 367: bool distinct=false;
1.172.2.10 paf 368: int param_index=params->count()-1;
1.166 paf 369: if(param_index>0) {
1.172.2.6 paf 370: if(HashStringValue* options=
1.172.2.14.2. (paf 371:): params->as_no_junction(param_index, "param must not be code")->get_hash()) {
1.166 paf 372: --param_index;
373: int valid_options=0;
1.172.2.14.2. (paf 374:): if(Value* vdistinct=options->get(sql_distinct_name)) {
1.166 paf 375: valid_options++;
1.172.2.6 paf 376: distinct=r.process_to_value(vdistinct)->as_bool();
1.166 paf 377: }
1.172.2.6 paf 378: if(valid_options!=options->count())
1.166 paf 379: throw Exception("parser.runtime",
1.172.2.5 paf 380: method_name,
1.166 paf 381: "called with invalid option");
1.163 paf 382: }
383: }
384: if(param_index==2) // bad options param type
385: throw Exception("parser.runtime",
1.172.2.5 paf 386: method_name,
1.163 paf 387: "options must be hash");
388:
1.172.2.6 paf 389: Array<int> value_fields;
1.163 paf 390: if(param_index>0) {
1.172.2.14.2. (paf 391:): Value* value_fields_param=params->as_no_junction(param_index, "value field(s) must not be code");
1.172.2.6 paf 392: if(value_fields_param->is_string()) {
393: value_fields+=self_table.column_name2index(
1.172.2.14.2. (paf 394:): value_fields_param->as_string(), true);
1.172.2.6 paf 395: } else if(Table* value_fields_table=value_fields_param->get_table()) {
396: for(int i=0; i<value_fields_table->count(); i++) {
1.172.2.14.2. (paf 397:): const String& value_field_name=
1.172.2.6 paf 398: value_fields_table->get(i)->get(0);
1.123 parser 399: value_fields+=self_table.column_name2index(value_field_name, true);
400: }
401: } else
1.146 paf 402: throw Exception("parser.runtime",
1.172.2.5 paf 403: method_name,
1.123 parser 404: "value field(s) must be string or self_table"
405: );
406: } else { // by all columns, including key
1.172.2.6 paf 407: for(int i=0; i<columns->count(); i++)
1.123 parser 408: value_fields+=i;
1.74 paf 409: }
410:
1.172.2.6 paf 411:
412: {
413: Row_info info;
414: info.r=&r;
415: info.table=&self_table;
1.172.2.14.2. (paf 416:): Value* key_param=(*params)[0];
417:): info.key_code=key_param->get_junction()?key_param:0;
1.172.2.6 paf 418: info.key_field=info.key_code?-1
1.172.2.14.2. (paf 419:): :self_table.column_name2index(key_param->as_string(), true);
1.172.2.6 paf 420: info.value_fields=&value_fields;
1.172.2.14.2. 2(paf 421:3): info.hash=&result.hash();
1.172.2.6 paf 422: info.distinct=distinct;
1.172.2.12 paf 423: info.row=0;
1.172.2.6 paf 424:
425: int saved_current=self_table.current();
426: self_table.for_each(table_row_to_hash, &info);
427: self_table.set_current(saved_current);
428: }
1.74 paf 429: }
1.97 parser 430: r.write_no_lang(result);
1.74 paf 431: }
432:
1.110 parser 433: #ifndef DOXYGEN
1.78 paf 434: struct Table_seq_item {
1.172.2.13 paf 435: ArrayString* row;
1.34 paf 436: union {
437: char *c_str;
438: double d;
439: } value;
1.32 paf 440: };
1.110 parser 441: #endif
1.34 paf 442: static int sort_cmp_string(const void *a, const void *b) {
443: return strcmp(
1.78 paf 444: static_cast<const Table_seq_item *>(a)->value.c_str,
445: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 446: );
447: }
448: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 449: double va=static_cast<const Table_seq_item *>(a)->value.d;
450: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 451: if(va<vb)
452: return -1;
453: else if(va>vb)
454: return +1;
455: else
456: return 0;
457: }
1.172.2.14.2. (paf 458:): static void _sort(Request& r, MethodParams* params) {
459:): Value& key_maker=params->as_junction(0, "key-maker must be code");
1.61 paf 460:
1.172.2.10 paf 461: bool reverse=params->count()>1/*..[desc|asc|]*/?
1.172.2.14.2. (paf 462:): reverse=*params->as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 463: false; // default=asc
1.32 paf 464:
1.172.2.14.2. (paf 465:): Table& old_table=GET_SELF(r, VTable).table();
466:): Table* new_table(new Table(method_name, old_table.columns()));
1.34 paf 467:
1.172.2.6 paf 468: smart_ptr<Table_seq_item> seq(new Table_seq_item[old_table.count()]);
1.34 paf 469: int i;
470:
471: // calculate key values
472: bool key_values_are_strings=true;
1.172.2.6 paf 473: for(i=0; i<old_table.count(); i++) {
1.101 parser 474: old_table.set_current(i);
1.32 paf 475: // calculate key value
1.172.2.14.2. (paf 476:): seq[i].row=old_table[i];
477:): Value* value=r.process_to_value(key_maker)->as_expr_result(true/*return string as-is*/);
1.34 paf 478: if(i==0) // determining key values type by first one
1.172.2.6 paf 479: key_values_are_strings=value->is_string();
1.34 paf 480:
481: if(key_values_are_strings)
1.172.2.14.2. (paf 482:): seq[i].value.c_str=value->as_string()->cstr(local_pool);
1.34 paf 483: else
1.172.2.6 paf 484: seq[i].value.d=value->as_double();
1.32 paf 485: }
486: // sort keys
1.172.2.6 paf 487: _qsort(seq, old_table.count(), sizeof(Table_seq_item),
1.34 paf 488: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 489:
1.34 paf 490: // reorder table as they require in 'seq'
1.172.2.6 paf 491: for(i=0; i<old_table.count(); i++)
1.172.2.13 paf 492: *new_table+=Table::element_type(seq[reverse?old_table.count()-1-i:i].row);
1.32 paf 493:
1.116 parser 494: // replace any previous table value
1.172.2.6 paf 495: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 496: }
497:
1.172.2.14.2. (paf 498:): static bool _locate_expression(Request& r, MethodParams* params) {
1.172.2.10 paf 499: if(params->count()>1)
1.146 paf 500: throw Exception("parser.runtime",
1.172.2.5 paf 501: method_name,
1.145 paf 502: "locate by expression has only one parameter - expression");
503:
1.172.2.14.2. (paf 504:): Value* expression_code=params->as_junction(0, "must be expression");
1.145 paf 505:
1.172.2.14.2. (paf 506:): Table& table=GET_SELF(r, VTable).table();
1.145 paf 507: int saved_current=table.current();
1.172.2.6 paf 508: int size=table.count();
1.145 paf 509: for(int row=0; row<size; row++) {
510: table.set_current(row);
511:
1.172.2.6 paf 512: if(r.process_to_value(expression_code)->as_bool())
1.145 paf 513: return true;
514: }
515: table.set_current(saved_current);
516: return false;
517: }
1.172.2.14.2. (paf 518:): static bool _locate_name_value(Request& r, MethodParams* params) {
1.172.2.10 paf 519: if(params->count()>2)
1.146 paf 520: throw Exception("parser.runtime",
1.172.2.5 paf 521: method_name,
1.145 paf 522: "locate by name and value has only two parameters - name and value");
1.72 paf 523:
1.172.2.14.2. (paf 524:): Table& table=GET_SELF(r, VTable).table();
1.145 paf 525: return table.locate(
1.172.2.10 paf 526: params->as_string(0, "column name must be string"),
527: params->as_string(1, "value must be string")
1.145 paf 528: );
529: }
1.172.2.14.2. (paf 530:): static void _locate(Request& r, MethodParams* params) {
1.172.2.10 paf 531: bool result=(*params)[0]->get_junction()?
1.145 paf 532: _locate_expression(r, method_name, params) :
1.151 paf 533: _locate_name_value(r, method_name, params);
1.172.2.14.2. (paf 534:): r.write_no_lang(Value*(new VBool(result)));
1.37 paf 535: }
536:
1.172.2.14.2. (paf 537:): static void _flip(Request& r, MethodParams* params) {
538:): Table& old_table=GET_SELF(r, VTable).table();
539:): Table* new_table(new Table(method_name, old_table.columns()));
1.172.2.6 paf 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];
1.172.2.14.2. (paf 546:): *new_row+=column<old_row->count()?old_row->get(column):String* (new String);
1.39 paf 547: }
1.172.2.6 paf 548: *new_table+=new_row;
1.39 paf 549: }
550:
1.172.2.14.2. (paf 551:): r.write_no_lang(Value*(new VTable(new_table)));
1.39 paf 552: }
553:
1.172.2.14.2. (paf 554:): static void _append(Request& r, MethodParams* params) {
1.134 paf 555: // data
1.172.2.14.2. (paf 556:): Temp_lang temp_lang(r, String::L_PASS_APPENDED);
557:): const String& string=r.process_to_string(params->as_junction(0, "body must be code"));
1.41 paf 558:
559: // parse cells
1.172.2.14.2. (paf 560:): ArrayString& row(new ArrayString);
561:): string->split(*row, 0, "\t", 1, String::L_AS_IS);
1.41 paf 562:
1.172.2.14.2. (paf 563:): GET_SELF(r, VTable).table()+=row;
1.41 paf 564: }
565:
1.172.2.14.2. (paf 566:): static void _join(Request& r, MethodParams* params) {
1.42 paf 567:
1.172.2.10 paf 568: Table* maybe_src=params->as_no_junction(0, "table ref must not be code")->get_table();
1.42 paf 569: if(!maybe_src)
1.146 paf 570: throw Exception("parser.runtime",
1.172.2.5 paf 571: method_name,
1.42 paf 572: "source is not a table");
573:
574: Table& src=*maybe_src;
1.172.2.14.2. (paf 575:): Table& dest=GET_SELF(r, VTable).table();
1.42 paf 576: if(&src == &dest)
1.146 paf 577: throw Exception("parser.runtime",
1.172.2.5 paf 578: method_name,
1.42 paf 579: "source and destination are same table");
580:
1.157 paf 581: int offset, limit;
582: get_copy_options(r, method_name, params, 1, src,
583: offset, limit);
584:
1.172.2.6 paf 585: if(Table::columns_type dest_columns=dest.columns()) { // dest is named
1.42 paf 586: int saved_src_current=src.current();
1.172.2.6 paf 587: int m=src.count()-offset;
1.157 paf 588: if(!limit || limit>m)
589: limit=m;
590: int end=offset+limit;
591: for(int src_row=offset; src_row<end; src_row++) {
1.42 paf 592: src.set_current(src_row);
1.172.2.6 paf 593: Table::element_type dest_row(new ArrayString(src.count()));
594: for(int dest_column=0; dest_column<dest_columns->count(); dest_column++) {
1.172.2.14.2. (paf 595:): const String& src_item=src.item(dest_columns->get(dest_column));
596:): *dest_row+=src_item?src_item:String* (new String);
1.140 paf 597: }
1.172.2.6 paf 598: dest+=dest_row;
1.42 paf 599: }
600: src.set_current(saved_src_current);
601: } else { // dest is nameless
1.172.2.6 paf 602: for(int src_row=0; src_row<src.count(); src_row++)
603: dest+=src[src_row];
1.42 paf 604: }
605: }
606:
1.94 parser 607: #ifndef DOXYGEN
1.169 paf 608: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.172.2.14.2. (paf 609:): const String& method_name;
610:): const String& statement_string; const char* statement_cstr;
611:): ArrayString& columns;
1.172.2.6 paf 612: ArrayString* row;
613: public:
1.172.2.14.2. (paf 614:): Table* table;
1.94 parser 615: public:
1.172.2.14.2. (paf 616:): Table_sql_event_handlers(const String& amethod_name,
617:): const String& astatement_string, const char* astatement_cstr) :
1.94 parser 618: method_name(amethod_name),
1.172.2.14 paf 619: statement_string(astatement_string), statement_cstr(astatement_cstr),
620: columns(new ArrayString), row(0) {
621: }
1.94 parser 622:
1.170 paf 623: bool add_column(SQL_Error& error, void *ptr, size_t size) {
624: try {
1.172.2.14.2. (paf 625:): const String& column(new String);
1.170 paf 626: column->APPEND_TAINTED(
1.172.2.2 paf 627: (const char* )ptr, size,
1.170 paf 628: statement_cstr, 0);
1.172.2.6 paf 629: *columns+=column;
1.170 paf 630: return false;
631: } catch(...) {
632: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
633: return true;
634: }
635: }
636: bool before_rows(SQL_Error& error) {
637: try {
1.172.2.14.2. (paf 638:): table=Table*(new Table( method_name, columns));
1.170 paf 639: return false;
640: } catch(...) {
641: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
642: return true;
643: }
644: }
645: bool add_row(SQL_Error& error) {
646: try {
1.172.2.14.2. (paf 647:): *table+=(ArrayString* (row=new ArrayString));
1.170 paf 648: return false;
649: } catch(...) {
650: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
651: return true;
652: }
653: }
654: bool add_row_cell(SQL_Error& error, void *ptr, size_t size) {
655: try {
1.172.2.14.2. (paf 656:): const String& cell(new String);
1.170 paf 657: if(size)
658: cell->APPEND_TAINTED(
1.172.2.2 paf 659: (const char* )ptr, size,
1.172.2.6 paf 660: statement_cstr, table->count()-1);
661: *row+=cell;
1.170 paf 662: return false;
663: } catch(...) {
664: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
665: return true;
666: }
1.94 parser 667: }
668: };
669: #endif
1.172.2.14.2. (paf 670:): static void _sql(Request& r, MethodParams* params) {
1.49 paf 671:
1.172.2.14.2. (paf 672:): Value* statement=params->as_junction(0, "statement must be code");
1.49 paf 673:
1.53 paf 674: ulong limit=0;
1.100 parser 675: ulong offset=0;
1.172.2.10 paf 676: if(params->count()>1) {
1.172.2.14.2. (paf 677:): Value* voptions=params->as_no_junction(1, "options must be hash, not code");
1.172.2.6 paf 678: if(!voptions->is_string())
1.172.2.14.2. (paf 679:): if(HashStringValue* options=voptions->get_hash()) {
1.164 paf 680: int valid_options=0;
1.172.2.14.2. (paf 681:): if(Value* vlimit=options->get(sql_limit_name)) {
1.164 paf 682: valid_options++;
1.172.2.6 paf 683: limit=(ulong)r.process_to_value(vlimit)->as_double();
1.164 paf 684: }
1.172.2.14.2. (paf 685:): if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 686: valid_options++;
1.172.2.6 paf 687: offset=(ulong)r.process_to_value(voffset)->as_double();
1.164 paf 688: }
1.172.2.6 paf 689: if(valid_options!=options->count())
1.164 paf 690: throw Exception("parser.runtime",
1.172.2.5 paf 691: method_name,
1.164 paf 692: "called with invalid option");
1.109 parser 693: } else
1.146 paf 694: throw Exception("parser.runtime",
1.172.2.5 paf 695: method_name,
1.109 parser 696: "options must be hash");
1.49 paf 697: }
698:
1.172.2.14.2. (paf 699:): Temp_lang temp_lang(r, String::L_SQL);
700:): const String& statement_string=r.process_to_string(statement);
1.172.2.2 paf 701: const char* statement_cstr=
1.172.2.14.2. (paf 702:): statement_string->cstr(String::L_UNSPECIFIED, r.connection());
1.172.2.14 paf 703: Table_sql_event_handlers handlers(method_name,
1.94 parser 704: statement_string, statement_cstr);
1.135 paf 705: #ifdef RESOURCES_DEBUG
706: struct timeval mt[2];
707: //measure:before
708: gettimeofday(&mt[0],NULL);
709: #endif
1.172.2.14.2. (paf 710:): r.connection()->query(
1.160 paf 711: statement_cstr, offset, limit,
712: handlers,
713: statement_string);
1.135 paf 714:
715: #ifdef RESOURCES_DEBUG
716: //measure:after connect
717: gettimeofday(&mt[1],NULL);
718:
719: double t[2];
720: for(int i=0;i<2;i++)
721: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
722:
723: r.sql_request_time+=t[1]-t[0];
724: #endif
1.96 parser 725:
1.172.2.14.2. (paf 726:): Table* result=
1.96 parser 727: handlers.table?handlers.table: // query resulted in table? return it
1.172.2.14.2. (paf 728:): Table*(new Table(method_name, Table::columns_type(0))); // query returned no table, fake it
1.49 paf 729:
730: // replace any previous table value
1.172.2.6 paf 731: GET_SELF(r, VTable).set_table(result);
1.49 paf 732: }
733:
1.172.2.14.2. (paf 734:): static void _columns(Request& r, MethodParams* ) {
1.88 parser 735:
1.172.2.6 paf 736: Table::columns_type result_columns(new ArrayString);
1.172.2.14.2. (paf 737:): *result_columns+=String* (new String("column"));
738:): Table* result_table(new Table(method_name, result_columns));
1.172.2.6 paf 739:
1.172.2.14.2. (paf 740:): Table& source_table=GET_SELF(r, VTable).table();
1.172.2.6 paf 741: if(Table::columns_type source_columns=source_table.columns()) {
1.172.2.14.2. (paf 742:): Array_iterator<String*> i(*source_columns);
1.98 parser 743: while(i.has_next()) {
1.172.2.6 paf 744: Table::element_type result_row(new ArrayString);
745: *result_row+=i.next();
746: *result_table+=result_row;
1.88 parser 747: }
748: }
749:
1.172.2.14.2. (paf 750:): r.write_no_lang(Value*(new VTable(result_table)));
1.88 parser 751: }
752:
1.172.2.14.2. (paf 753:): static void _select(Request& r, MethodParams* params) {
1.148 paf 754:
1.172.2.14.2. (paf 755:): Value* vcondition=params->as_junction(0, "condition must be expression");
1.148 paf 756:
1.172.2.14.2. (paf 757:): Table& source_table=GET_SELF(r, VTable).table();
758:): Table* result_table(new Table(
1.148 paf 759: source_table.origin_string(),
760: source_table.columns()
1.172.2.6 paf 761: ));
1.148 paf 762:
763: int saved_current=source_table.current();
1.172.2.6 paf 764: int size=source_table.count();
1.148 paf 765: for(int row=0; row<size; row++) {
766: source_table.set_current(row);
767:
1.150 paf 768: bool condition=r.process_to_value(vcondition,
1.149 paf 769: /*0/*no name* /,*/
1.172.2.6 paf 770: false/*don't intercept string*/)->as_bool();
1.148 paf 771:
772: if(condition) // ...condition is true=
1.172.2.6 paf 773: *result_table+=source_table[row]; // =green light to go to result
1.148 paf 774: }
775: source_table.set_current(saved_current);
776:
1.172.2.14.2. (paf 777:): r.write_no_lang(Value*(new VTable(result_table)));
1.148 paf 778: }
779:
1.66 paf 780: // constructor
781:
1.172.2.6 paf 782: MTable::MTable(): Methoded("table") {
1.142 paf 783: // ^table::create{data}
784: // ^table::create[nameless]{data}
785: // ^table::create[table]
786: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 2);
787: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
788: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 2);
1.2 paf 789:
1.142 paf 790: // ^table::load[file]
791: // ^table::load[nameless;file]
1.168 paf 792: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 793:
794: // ^table.save[file]
795: // ^table.save[nameless;file]
1.66 paf 796: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
1.6 paf 797:
798: // ^table.count[]
1.66 paf 799: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 800:
801: // ^table.line[]
1.66 paf 802: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 803:
1.10 paf 804: // ^table.offset[]
1.133 paf 805: // ^table.offset(offset)
806: // ^table.offset[cur|set](offset)
807: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 808:
1.10 paf 809: // ^table.menu{code}
810: // ^table.menu{code}[delim]
1.66 paf 811: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 812:
1.79 paf 813: // ^table:hash[key field name]
1.123 parser 814: // ^table:hash[key field name][value field name(s) string/table]
1.163 paf 815: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 816:
1.102 parser 817: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
818: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 819: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 820:
1.36 paf 821: // ^table.locate[field;value]
1.145 paf 822: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 2);
1.39 paf 823:
824: // ^table.flip[]
1.66 paf 825: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 826:
827: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 828: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 829:
1.157 paf 830: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
831: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 832:
833:
1.100 parser 834: // ^table:sql[query]
835: // ^table:sql[query][$.limit(1) $.offset(2)]
836: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 837:
838: // ^table:columns[]
839: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 0);
1.148 paf 840:
841: // ^table.select(expression) = table
842: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.40 paf 843: }
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