Annotation of parser3/src/classes/table.C, revision 1.141
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.1 paf 4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.130 paf 5: Author: Alexander Petrosyan <paf@design.ru> (http://paf.design.ru)
1.20 paf 6:
1.141 ! paf 7: $Id: table.C,v 1.140 2002/01/22 08:59:59 paf Exp $
1.1 paf 8: */
9:
1.105 parser 10: #include "classes.h"
1.16 paf 11: #include "pa_common.h"
1.1 paf 12: #include "pa_request.h"
13: #include "pa_vtable.h"
1.6 paf 14: #include "pa_vint.h"
1.51 paf 15: #include "pa_sql_connection.h"
1.72 paf 16: #include "pa_vbool.h"
1.1 paf 17:
1.66 paf 18: // defines
1.1 paf 19:
1.66 paf 20: #define TABLE_CLASS_NAME "table"
21:
22: // class
23:
24: class MTable : public Methoded {
25: public: // VStateless_class
26: Value *create_new_value(Pool& pool) { return new(pool) VTable(pool); }
27:
28: public:
29: MTable(Pool& pool);
1.70 paf 30:
31: public: // Methoded
1.66 paf 32: bool used_directly() { return true; }
33: };
1.1 paf 34:
35: // methods
1.66 paf 36:
1.61 paf 37: static void _set(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 38: Pool& pool=r.pool();
39: // data is last parameter
1.45 paf 40: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.134 paf 41: const String& data=
42: r.process(params->as_junction(params->size()-1, "body must be code")).as_string();
1.44 paf 43:
44: size_t pos_after=0;
45: // parse columns
46: Array *columns;
47: if(params->size()==2) {
48: columns=0;
1.21 paf 49: } else {
1.44 paf 50: columns=new(pool) Array(pool);
51:
52: Array head(pool);
1.137 paf 53: data.split(head, &pos_after, "\n", 1, String::UL_AS_IS, 1);
1.44 paf 54: if(head.size())
1.137 paf 55: head.get_string(0)->split(*columns, 0, "\t", 1, String::UL_AS_IS);
1.44 paf 56: }
57:
58: Table& table=*new(pool) Table(pool, &method_name, columns);
59: // parse cells
60: Array rows(pool);
1.137 paf 61: data.split(rows, &pos_after, "\n", 1, String::UL_AS_IS);
1.98 parser 62: Array_iter i(rows);
63: while(i.has_next()) {
1.44 paf 64: Array& row=*new(pool) Array(pool);
1.98 parser 65: const String& string=*i.next_string();
1.118 parser 66: // remove comment lines
67: if(!string.size())
1.44 paf 68: continue;
69:
1.137 paf 70: string.split(row, 0, "\t", 1, String::UL_AS_IS);
1.44 paf 71: table+=&row;
1.17 paf 72: }
1.1 paf 73:
1.44 paf 74: // replace any previous table value
75: static_cast<VTable *>(r.self)->set_table(table);
76: }
77:
1.61 paf 78: static void _load(Request& r, const String& method_name, MethodParams *params) {
1.44 paf 79: Pool& pool=r.pool();
80: // filename is last parameter
1.125 parser 81: Value& vfile_name=params->as_no_junction(params->size()-1,
1.61 paf 82: "file name must not be code");
1.44 paf 83:
84: // loading text
1.125 parser 85: char *data=file_read_text(pool, r.absolute(vfile_name.as_string()));
1.44 paf 86:
1.1 paf 87: // parse columns
88: Array *columns;
89: #ifndef NO_STRING_ORIGIN
90: const Origin& origin=method_name.origin();
1.2 paf 91: const char *file=origin.file;
1.1 paf 92: uint line=origin.line;
93: #endif
94: if(params->size()==2) {
1.139 paf 95: columns=0; // nameless
1.1 paf 96: } else {
97: columns=new(pool) Array(pool);
98:
1.139 paf 99: while(char *row_chars=getrow(&data)) {
100: // remove empty&comment lines
101: if(!*row_chars || *row_chars == '#')
102: continue;
1.1 paf 103: do {
104: String *name=new(pool) String(pool);
1.45 paf 105: name->APPEND_TAINTED(lsplit(&row_chars, '\t'), 0, file, line++);
1.1 paf 106: *columns+=name;
107: } while(row_chars);
1.139 paf 108:
109: break;
110: }
1.1 paf 111: }
112:
113: // parse cells
1.27 paf 114: Table& table=*new(pool) Table(pool, &method_name, columns);
1.1 paf 115: char *row_chars;
116: while(row_chars=getrow(&data)) {
1.118 parser 117: // remove empty&comment lines
118: if(!*row_chars || *row_chars == '#')
1.28 paf 119: continue;
1.1 paf 120: Array *row=new(pool) Array(pool);
121: while(char *cell_chars=lsplit(&row_chars, '\t')) {
122: String *cell=new(pool) String(pool);
1.44 paf 123: cell->APPEND_TAINTED(cell_chars, 0, file, line);
1.1 paf 124: *row+=cell;
125: }
1.107 parser 126: #ifndef NO_STRING_ORIGIN
1.1 paf 127: line++;
1.107 parser 128: #endif
1.1 paf 129: table+=row;
130: };
131:
132: // replace any previous table value
1.18 paf 133: static_cast<VTable *>(r.self)->set_table(table);
1.1 paf 134: }
1.2 paf 135:
1.129 paf 136: /// @todo "z\nz" "zzz""zz"
1.61 paf 137: static void _save(Request& r, const String& method_name, MethodParams *params) {
1.22 paf 138: Pool& pool=r.pool();
1.125 parser 139: Value& vfile_name=params->as_no_junction(params->size()-1,
1.61 paf 140: "file name must not be code");
1.22 paf 141:
1.31 paf 142: Table& table=static_cast<VTable *>(r.self)->table();
143:
1.129 paf 144: bool do_append=false;
1.31 paf 145: String sdata(pool);
1.129 paf 146: if(params->size()==1) { // named output
1.31 paf 147: // write out names line
148: if(table.columns()) { // named table
1.98 parser 149: Array_iter i(*table.columns());
150: while(i.has_next()) {
151: sdata.append(*i.next_string(), //*static_cast<String *>(table.columns()->quick_get(column)),
152: String::UL_TABLE);
153: if(i.has_next())
1.31 paf 154: sdata.APPEND_CONST("\t");
155: }
156: } else { // nameless table
1.98 parser 157: if(int lsize=table.size()?static_cast<Array *>(table.get(0))->size():0)
1.31 paf 158: for(int column=0; column<lsize; column++) {
1.106 parser 159: char *cindex_tab=(char *)pool.malloc(MAX_NUMBER);
1.31 paf 160: snprintf(cindex_tab, MAX_NUMBER, "%d\t", column);
161: sdata.APPEND_CONST(cindex_tab);
162: }
163: else
164: sdata.APPEND_CONST("empty nameless table");
165: }
166: sdata.APPEND_CONST("\n");
1.129 paf 167: } else { // mode specified
168: const String& mode=params->as_string(0, "mode must be string");
169: if(mode=="append")
170: do_append=true;
171: else if(mode=="nameless")
172: /*ok, already skipped names output*/;
173: else
174: throw Exception(0, 0,
175: &mode,
176: "unknown mode, must be 'append'");
177:
1.31 paf 178: }
179: // data lines
1.98 parser 180: Array_iter i(table);
181: while(i.has_next()) {
182: Array_iter c(*static_cast<Array *>(i.next()));
183: while(c.has_next()) {
184: sdata.append(*c.next_string(), //*static_cast<String *>(row->quick_get(column)),
185: String::UL_TABLE);
186: if(c.has_next())
1.31 paf 187: sdata.APPEND_CONST("\t");
188: }
189: sdata.APPEND_CONST("\n");
190: }
191:
192: // write
1.141 ! paf 193: file_write(r.absolute(vfile_name.as_string()),
1.129 paf 194: sdata.cstr(), sdata.size(), true, do_append);
1.22 paf 195: }
196:
1.93 parser 197: static void _count(Request& r, const String& method_name, MethodParams *) {
1.6 paf 198: Pool& pool=r.pool();
1.18 paf 199: Value& value=*new(pool) VInt(pool, static_cast<VTable *>(r.self)->table().size());
1.93 parser 200: value.set_name(method_name);
1.15 paf 201: r.write_no_lang(value);
1.6 paf 202: }
203:
1.61 paf 204: static void _line(Request& r, const String& method_name, MethodParams *) {
1.6 paf 205: Pool& pool=r.pool();
1.37 paf 206: Value& value=*new(pool) VInt(pool, 1+static_cast<VTable *>(r.self)->table().current());
1.93 parser 207: value.set_name(method_name);
1.15 paf 208: r.write_no_lang(value);
1.6 paf 209: }
210:
1.61 paf 211: static void _offset(Request& r, const String& method_name, MethodParams *params) {
1.6 paf 212: Pool& pool=r.pool();
1.18 paf 213: Table& table=static_cast<VTable *>(r.self)->table();
1.74 paf 214: if(params->size()) {
1.133 paf 215: bool absolute=false;
216: if(params->size()>1) {
217: const String& whence=params->as_string(0, "whence must be string");
218: if(whence=="cur")
1.134 paf 219: absolute=false;
1.133 paf 220: else if(whence=="set")
1.134 paf 221: absolute=true;
1.133 paf 222: else
1.134 paf 223: throw Exception(0, 0,
224: &whence,
225: "is invalid whence, valid are 'cur' or 'set'");
226: }
1.133 paf 227:
228: Value& offset_expr=params->as_junction(params->size()-1, "offset must be expression");
229: table.offset(absolute, r.process(offset_expr).as_int());
1.74 paf 230: } else {
1.37 paf 231: Value& value=*new(pool) VInt(pool, table.current());
1.93 parser 232: value.set_name(method_name);
1.15 paf 233: r.write_no_lang(value);
1.6 paf 234: }
235: }
236:
1.61 paf 237: static void _menu(Request& r, const String& method_name, MethodParams *params) {
1.90 parser 238: Value& body_code=params->as_junction(0, "body must be code");
1.7 paf 239:
1.122 parser 240: Value *delim_maybe_code=params->size()>1?¶ms->get(1):0;
1.7 paf 241:
1.64 paf 242: VTable& vtable=*static_cast<VTable *>(r.self);
243: Table& table=vtable.table();
1.7 paf 244: bool need_delim=false;
1.99 parser 245: int saved_current=table.current();
246: int size=table.size();
247: for(int row=0; row<size; row++) {
1.22 paf 248: table.set_current(row);
1.7 paf 249:
1.12 paf 250: Value& processed_body=r.process(body_code);
1.121 parser 251: if(delim_maybe_code) { // delimiter set?
1.7 paf 252: const String *string=processed_body.get_string();
253: if(need_delim && string && string->size()) // need delim & iteration produced string?
1.121 parser 254: r.write_pass_lang(r.process(*delim_maybe_code));
1.7 paf 255: need_delim=true;
256: }
257: r.write_pass_lang(processed_body);
258: }
1.99 parser 259: table.set_current(saved_current);
1.7 paf 260: }
261:
1.110 parser 262: #ifndef DOXYGEN
1.74 paf 263: struct Row_info {
264: Table *table;
265: int key_field;
266: Array *value_fields;
267: Hash *hash;
268: };
1.110 parser 269: #endif
1.74 paf 270: static void table_row_to_hash(Array::Item *value, void *info) {
271: Array& row=*static_cast<Array *>(value);
272: Row_info& ri=*static_cast<Row_info *>(info);
273: Pool& pool=ri.table->pool();
274:
1.76 paf 275: if(ri.key_field<row.size()) {
276: VHash& result=*new(pool) VHash(pool);
1.128 parser 277: Hash& hash=*result.get_hash(0);
1.74 paf 278: for(int i=0; i<ri.value_fields->size(); i++) {
279: int value_field=ri.value_fields->get_int(i);
280: if(value_field<row.size())
281: hash.put(
1.91 parser 282: *ri.table->columns()->get_string(value_field),
1.74 paf 283: new(pool) VString(*row.get_string(value_field)));
284: }
285:
1.77 paf 286: ri.hash->put(*row.get_string(ri.key_field), &result);
1.74 paf 287: }
288: }
289: static void _hash(Request& r, const String& method_name, MethodParams *params) {
1.97 parser 290: Pool& pool=r.pool();
1.123 parser 291: Table& self_table=static_cast<VTable *>(r.self)->table();
1.97 parser 292: Value& result=*new(pool) VHash(pool);
1.123 parser 293: if(const Array *columns=self_table.columns())
1.74 paf 294: if(columns->size()>1) {
1.90 parser 295: const String& key_field_name=params->as_no_junction(0,
1.74 paf 296: "key field name must not be code").as_string();
1.123 parser 297: int key_field=self_table.column_name2index(key_field_name, true);
298:
299: Array value_fields(pool);
300: if(params->size()>1) {
301: Value& value_fields_param=params->as_no_junction(1, "value field(s) must not be code");
302: if(value_fields_param.is_string()) {
303: value_fields+=self_table.column_name2index(value_fields_param.as_string(), true);
304: } else if(Table *value_fields_table=value_fields_param.get_table()) {
305: for(int i=0; i<value_fields_table->size(); i++) {
306: const String& value_field_name=
307: *static_cast<Array *>(value_fields_table->get(i))->get_string(0);
308: value_fields+=self_table.column_name2index(value_field_name, true);
309: }
310: } else
1.127 parser 311: throw Exception(0, 0,
1.123 parser 312: &method_name,
313: "value field(s) must be string or self_table"
314: );
315: } else { // by all columns, including key
1.74 paf 316: for(int i=0; i<columns->size(); i++)
1.123 parser 317: value_fields+=i;
1.74 paf 318: }
319:
320: // integers: key_field & value_fields
1.128 parser 321: Row_info row_info={&self_table, key_field, &value_fields, result.get_hash(0)};
1.123 parser 322: self_table.for_each(table_row_to_hash, &row_info);
1.74 paf 323: }
1.97 parser 324: result.set_name(method_name);
325: r.write_no_lang(result);
1.74 paf 326: }
327:
1.110 parser 328: #ifndef DOXYGEN
1.78 paf 329: struct Table_seq_item {
1.34 paf 330: Array *row;
331: union {
332: char *c_str;
333: double d;
334: } value;
1.32 paf 335: };
1.110 parser 336: #endif
1.34 paf 337: static int sort_cmp_string(const void *a, const void *b) {
338: return strcmp(
1.78 paf 339: static_cast<const Table_seq_item *>(a)->value.c_str,
340: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 341: );
342: }
343: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 344: double va=static_cast<const Table_seq_item *>(a)->value.d;
345: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 346: if(va<vb)
347: return -1;
348: else if(va>vb)
349: return +1;
350: else
351: return 0;
352: }
1.61 paf 353: static void _sort(Request& r, const String& method_name, MethodParams *params) {
1.101 parser 354: Pool& pool=r.pool();
1.90 parser 355: Value& key_maker=params->as_junction(0, "key-maker must be code");
1.61 paf 356:
1.122 parser 357: bool reverse=params->size()>1/*..[desc|asc|]*/?
1.103 parser 358: reverse=params->as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 359: false; // default=asc
1.32 paf 360:
1.101 parser 361: Table& old_table=static_cast<VTable *>(r.self)->table();
362: Table& new_table=*new(pool) Table(pool, &method_name, old_table.columns());
1.34 paf 363:
1.101 parser 364: Table_seq_item *seq=(Table_seq_item *)pool.malloc(sizeof(Table_seq_item)*old_table.size());
1.34 paf 365: int i;
366:
367: // calculate key values
368: bool key_values_are_strings=true;
1.101 parser 369: // save 'current'
370: int saved_current=old_table.current();
371: for(i=0; i<old_table.size(); i++) {
372: old_table.set_current(i);
1.32 paf 373: // calculate key value
1.101 parser 374: seq[i].row=(MethodParams *)old_table.get(i);
1.34 paf 375: Value& value=*r.process(key_maker).as_expr_result(true/*return string as-is*/);
376: if(i==0) // determining key values type by first one
377: key_values_are_strings=value.is_string();
378:
379: if(key_values_are_strings)
380: seq[i].value.c_str=value.as_string().cstr();
381: else
382: seq[i].value.d=value.as_double();
1.32 paf 383: }
1.101 parser 384: // restore 'current'
385: old_table.set_current(saved_current);
1.32 paf 386: // sort keys
1.101 parser 387: _qsort(seq, old_table.size(), sizeof(Table_seq_item),
1.34 paf 388: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 389:
1.34 paf 390: // reorder table as they require in 'seq'
1.101 parser 391: for(i=0; i<old_table.size(); i++)
392: new_table+=seq[reverse?old_table.size()-1-i:i].row;
1.32 paf 393:
1.116 parser 394: // replace any previous table value
395: static_cast<VTable *>(r.self)->set_table(new_table);
1.32 paf 396: }
397:
1.61 paf 398: static void _locate(Request& r, const String& method_name, MethodParams *params) {
1.72 paf 399: Pool& pool=r.pool();
400:
1.36 paf 401: VTable& vtable=*static_cast<VTable *>(r.self);
402: Table& table=vtable.table();
1.72 paf 403: Value& result=*new(pool) VBool(pool, table.locate(
1.120 parser 404: params->as_string(0, "column name must be string"),
405: params->as_string(1, "value must be string")
406: ));
1.72 paf 407: result.set_name(method_name);
408: r.write_no_lang(result);
1.37 paf 409: }
410:
1.61 paf 411: static void _flip(Request& r, const String& method_name, MethodParams *params) {
1.39 paf 412: Pool& pool=r.pool();
413: VTable& vtable=*static_cast<VTable *>(r.self);
414:
415: Table& old_table=*vtable.get_table();
416: Table& new_table=*new(pool) Table(pool, &method_name, 0/*nameless*/);
417: if(old_table.size())
418: if(int old_cols=old_table.at(0).size())
419: for(int column=0; column<old_cols; column++) {
420: Array& new_row=*new(pool) Array(pool, old_table.size());
421: for(int i=0; i<old_table.size(); i++) {
422: const Array& old_row=old_table.at(i);
1.126 parser 423: new_row+=column<old_row.size()?old_row.get(column):new(pool) String(pool);
1.39 paf 424: }
425: new_table+=&new_row;
426: }
427:
1.99 parser 428: r.write_no_lang(*new(pool) VTable(pool, &new_table));
1.39 paf 429: }
430:
1.61 paf 431: static void _append(Request& r, const String& method_name, MethodParams *params) {
1.41 paf 432: Pool& pool=r.pool();
1.134 paf 433: // data
434: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.61 paf 435: const String& string=
1.90 parser 436: r.process(params->as_junction(0, "body must be code")).as_string();
1.41 paf 437:
438: // parse cells
439: Array& row=*new(pool) Array(pool);
1.137 paf 440: string.split(row, 0, "\t", 1, String::UL_AS_IS);
1.41 paf 441:
1.66 paf 442: VTable& vtable=*static_cast<VTable *>(r.self);
443: vtable.table()+=&row;
1.41 paf 444: }
445:
1.61 paf 446: static void _join(Request& r, const String& method_name, MethodParams *params) {
1.42 paf 447: Pool& pool=r.pool();
448:
1.90 parser 449: Table *maybe_src=params->as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 450: if(!maybe_src)
1.127 parser 451: throw Exception(0, 0,
1.91 parser 452: &method_name,
1.42 paf 453: "source is not a table");
454:
455: Table& src=*maybe_src;
456: Table& dest=static_cast<VTable *>(r.self)->table();
457: if(&src == &dest)
1.127 parser 458: throw Exception(0, 0,
1.91 parser 459: &method_name,
1.42 paf 460: "source and destination are same table");
461:
462: if(const Array *dest_columns=dest.columns()) { // dest is named
463: int saved_src_current=src.current();
464: for(int src_row=0; src_row<src.size(); src_row++) {
465: src.set_current(src_row);
466: Array& dest_row=*new(pool) Array(pool);
1.140 paf 467: for(int dest_column=0; dest_column<dest_columns->size(); dest_column++) {
468: const String *src_item=src.item(*dest_columns->get_string(dest_column));
469: dest_row+=src_item?src_item:new(pool) String(pool);
470: }
1.42 paf 471: dest+=&dest_row;
472: }
473: src.set_current(saved_src_current);
474: } else { // dest is nameless
475: for(int src_row=0; src_row<src.size(); src_row++)
476: dest+=&src.at(src_row);
477: }
478: }
479:
1.94 parser 480: #ifndef DOXYGEN
481: class Table_sql_event_handlers : public SQL_Driver_query_event_handlers {
482: public:
483: Table_sql_event_handlers(Pool& apool, const String& amethod_name,
484: const String& astatement_string, const char *astatement_cstr) :
485: pool(apool),
486: method_name(amethod_name),
487: statement_string(astatement_string),
488: statement_cstr(astatement_cstr),
489: columns(*new(pool) Array(pool)),
1.134 paf 490: row(0),
1.94 parser 491: table(0)
492: {
493: }
494:
495: void add_column(void *ptr, size_t size) {
496: String *column=new(pool) String(pool);
497: column->APPEND_TAINTED(
498: (const char *)ptr, size,
499: statement_cstr, 0);
500: columns+=column;
501: }
502: void before_rows() {
503: table=new(pool) Table(pool, &method_name, &columns);
504: }
505: void add_row() {
506: (*table)+=(row=new(pool) Array(pool));
507: }
508: void add_row_cell(void *ptr, size_t size) {
509: String *cell=new(pool) String(pool);
510: if(size)
511: cell->APPEND_TAINTED(
512: (const char *)ptr, size,
1.134 paf 513: statement_cstr, table->size()-1);
1.94 parser 514: (*row)+=cell;
515: }
516:
517: private:
518: Pool& pool;
519: const String& method_name;
520: const String& statement_string; const char *statement_cstr;
521: Array& columns;
522: Array *row;
523: public:
524: Table *table;
525: };
526: #endif
1.61 paf 527: static void _sql(Request& r, const String& method_name, MethodParams *params) {
1.49 paf 528: Pool& pool=r.pool();
529:
1.90 parser 530: Value& statement=params->as_junction(0, "statement must be code");
1.49 paf 531:
1.53 paf 532: ulong limit=0;
1.100 parser 533: ulong offset=0;
1.49 paf 534: if(params->size()>1) {
1.109 parser 535: Value& voptions=params->as_no_junction(1, "options must be hash, not code");
536: if(voptions.is_defined())
1.128 parser 537: if(Hash *options=voptions.get_hash(&method_name)) {
1.109 parser 538: if(Value *vlimit=(Value *)options->get(*sql_limit_name))
539: limit=(ulong)r.process(*vlimit).as_double();
540: if(Value *voffset=(Value *)options->get(*sql_offset_name))
541: offset=(ulong)r.process(*voffset).as_double();
542: } else
1.127 parser 543: throw Exception(0, 0,
1.109 parser 544: &method_name,
545: "options must be hash");
1.49 paf 546: }
547:
1.54 paf 548: Temp_lang temp_lang(r, String::UL_SQL);
549: const String& statement_string=r.process(statement).as_string();
1.55 paf 550: const char *statement_cstr=
1.138 paf 551: statement_string.cstr(String::UL_UNSPECIFIED, r.connection(&method_name));
1.94 parser 552: Table_sql_event_handlers handlers(pool, method_name,
553: statement_string, statement_cstr);
1.127 parser 554: try {
1.135 paf 555: #ifdef RESOURCES_DEBUG
556: struct timeval mt[2];
557: //measure:before
558: gettimeofday(&mt[0],NULL);
559: #endif
1.138 paf 560: r.connection(&method_name)->query(
1.91 parser 561: statement_cstr, offset, limit,
1.94 parser 562: handlers);
1.135 paf 563:
564: #ifdef RESOURCES_DEBUG
565: //measure:after connect
566: gettimeofday(&mt[1],NULL);
567:
568: double t[2];
569: for(int i=0;i<2;i++)
570: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
571:
572: r.sql_request_time+=t[1]-t[0];
573: #endif
1.127 parser 574: } catch(const Exception& e) { // query problem
575: // more specific source [were url]
576: throw Exception(e.type(), e.code(),
577: &statement_string,
578: "%s", e.comment());
1.52 paf 579: }
1.96 parser 580:
581: Table *result=
582: handlers.table?handlers.table: // query resulted in table? return it
583: new(pool) Table(pool, &method_name, 0); // query returned no table, fake it
1.49 paf 584:
585: // replace any previous table value
1.96 parser 586: static_cast<VTable *>(r.self)->set_table(*result);
1.49 paf 587: }
588:
1.88 parser 589: static void _columns(Request& r, const String& method_name, MethodParams *) {
590: Pool& pool=r.pool();
591:
592: Array& result_columns=*new(pool) Array(pool);
1.89 parser 593: result_columns+=new(pool) String(pool, "column");
1.88 parser 594: Table& result_table=*new(pool) Table(pool, &method_name, &result_columns);
595:
596: Table& source_table=static_cast<VTable *>(r.self)->table();
597: if(const Array *source_columns=source_table.columns()) {
1.98 parser 598: Array_iter i(*source_columns);
599: while(i.has_next()) {
1.88 parser 600: Array& result_row=*new(pool) Array(pool);
1.98 parser 601: result_row+=i.next();
1.88 parser 602: result_table+=&result_row;
603: }
604: }
605:
606: VTable& result=*new(pool) VTable(pool, &result_table);
607: result.set_name(method_name);
608: r.write_no_lang(result);
609: }
610:
1.66 paf 611: // constructor
612:
613: MTable::MTable(Pool& apool) : Methoded(apool) {
614: set_name(*NEW String(pool(), TABLE_CLASS_NAME));
615:
1.49 paf 616: // ^table:set{data}
617: // ^table:set[nameless]{data}
1.66 paf 618: add_native_method("set", Method::CT_DYNAMIC, _set, 1, 2);
1.2 paf 619:
1.49 paf 620: // ^table:load[file]
621: // ^table:load[nameless;file]
1.66 paf 622: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 2);
1.22 paf 623:
624: // ^table.save[file]
625: // ^table.save[nameless;file]
1.66 paf 626: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
1.6 paf 627:
628: // ^table.count[]
1.66 paf 629: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 630:
631: // ^table.line[]
1.66 paf 632: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 633:
1.10 paf 634: // ^table.offset[]
1.133 paf 635: // ^table.offset(offset)
636: // ^table.offset[cur|set](offset)
637: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 638:
1.10 paf 639: // ^table.menu{code}
640: // ^table.menu{code}[delim]
1.66 paf 641: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 642:
1.79 paf 643: // ^table:hash[key field name]
1.123 parser 644: // ^table:hash[key field name][value field name(s) string/table]
645: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 2);
1.32 paf 646:
1.102 parser 647: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
648: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 649: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 650:
1.36 paf 651: // ^table.locate[field;value]
1.66 paf 652: add_native_method("locate", Method::CT_DYNAMIC, _locate, 2, 2);
1.39 paf 653:
654: // ^table.flip[]
1.66 paf 655: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 656:
657: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 658: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 659:
660: // ^table.join[table]
1.66 paf 661: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 1);
1.49 paf 662:
663:
1.100 parser 664: // ^table:sql[query]
665: // ^table:sql[query][$.limit(1) $.offset(2)]
666: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 667:
668: // ^table:columns[]
669: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 0);
1.66 paf 670: }
671:
672: // global variable
673:
674: Methoded *table_class;
675:
676: // creator
677:
678: Methoded *MTable_create(Pool& pool) {
679: return table_class=new(pool) MTable(pool);
1.40 paf 680: }
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