Annotation of parser3/src/classes/table.C, revision 1.137
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:
1.137 ! paf 7: $Id: table.C,v 1.136 2001/12/15 21:28:18 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) {
95: columns=0;
96: } else {
97: columns=new(pool) Array(pool);
98:
99: if(char *row_chars=getrow(&data))
100: do {
101: String *name=new(pool) String(pool);
1.45 paf 102: name->APPEND_TAINTED(lsplit(&row_chars, '\t'), 0, file, line++);
1.1 paf 103: *columns+=name;
104: } while(row_chars);
105: }
106:
107: // parse cells
1.27 paf 108: Table& table=*new(pool) Table(pool, &method_name, columns);
1.1 paf 109: char *row_chars;
110: while(row_chars=getrow(&data)) {
1.118 parser 111: // remove empty&comment lines
112: if(!*row_chars || *row_chars == '#')
1.28 paf 113: continue;
1.1 paf 114: Array *row=new(pool) Array(pool);
115: while(char *cell_chars=lsplit(&row_chars, '\t')) {
116: String *cell=new(pool) String(pool);
1.44 paf 117: cell->APPEND_TAINTED(cell_chars, 0, file, line);
1.1 paf 118: *row+=cell;
119: }
1.107 parser 120: #ifndef NO_STRING_ORIGIN
1.1 paf 121: line++;
1.107 parser 122: #endif
1.1 paf 123: table+=row;
124: };
125:
126: // replace any previous table value
1.18 paf 127: static_cast<VTable *>(r.self)->set_table(table);
1.1 paf 128: }
1.2 paf 129:
1.129 paf 130: /// @todo "z\nz" "zzz""zz"
1.61 paf 131: static void _save(Request& r, const String& method_name, MethodParams *params) {
1.22 paf 132: Pool& pool=r.pool();
1.125 parser 133: Value& vfile_name=params->as_no_junction(params->size()-1,
1.61 paf 134: "file name must not be code");
1.22 paf 135:
1.31 paf 136: Table& table=static_cast<VTable *>(r.self)->table();
137:
1.129 paf 138: bool do_append=false;
1.31 paf 139: String sdata(pool);
1.129 paf 140: if(params->size()==1) { // named output
1.31 paf 141: // write out names line
142: if(table.columns()) { // named table
1.98 parser 143: Array_iter i(*table.columns());
144: while(i.has_next()) {
145: sdata.append(*i.next_string(), //*static_cast<String *>(table.columns()->quick_get(column)),
146: String::UL_TABLE);
147: if(i.has_next())
1.31 paf 148: sdata.APPEND_CONST("\t");
149: }
150: } else { // nameless table
1.98 parser 151: if(int lsize=table.size()?static_cast<Array *>(table.get(0))->size():0)
1.31 paf 152: for(int column=0; column<lsize; column++) {
1.106 parser 153: char *cindex_tab=(char *)pool.malloc(MAX_NUMBER);
1.31 paf 154: snprintf(cindex_tab, MAX_NUMBER, "%d\t", column);
155: sdata.APPEND_CONST(cindex_tab);
156: }
157: else
158: sdata.APPEND_CONST("empty nameless table");
159: }
160: sdata.APPEND_CONST("\n");
1.129 paf 161: } else { // mode specified
162: const String& mode=params->as_string(0, "mode must be string");
163: if(mode=="append")
164: do_append=true;
165: else if(mode=="nameless")
166: /*ok, already skipped names output*/;
167: else
168: throw Exception(0, 0,
169: &mode,
170: "unknown mode, must be 'append'");
171:
1.31 paf 172: }
173: // data lines
1.98 parser 174: Array_iter i(table);
175: while(i.has_next()) {
176: Array_iter c(*static_cast<Array *>(i.next()));
177: while(c.has_next()) {
178: sdata.append(*c.next_string(), //*static_cast<String *>(row->quick_get(column)),
179: String::UL_TABLE);
180: if(c.has_next())
1.31 paf 181: sdata.APPEND_CONST("\t");
182: }
183: sdata.APPEND_CONST("\n");
184: }
185:
186: // write
1.125 parser 187: file_write(pool, r.absolute(vfile_name.as_string()),
1.129 paf 188: sdata.cstr(), sdata.size(), true, do_append);
1.22 paf 189: }
190:
1.93 parser 191: static void _count(Request& r, const String& method_name, MethodParams *) {
1.6 paf 192: Pool& pool=r.pool();
1.18 paf 193: Value& value=*new(pool) VInt(pool, static_cast<VTable *>(r.self)->table().size());
1.93 parser 194: value.set_name(method_name);
1.15 paf 195: r.write_no_lang(value);
1.6 paf 196: }
197:
1.61 paf 198: static void _line(Request& r, const String& method_name, MethodParams *) {
1.6 paf 199: Pool& pool=r.pool();
1.37 paf 200: Value& value=*new(pool) VInt(pool, 1+static_cast<VTable *>(r.self)->table().current());
1.93 parser 201: value.set_name(method_name);
1.15 paf 202: r.write_no_lang(value);
1.6 paf 203: }
204:
1.61 paf 205: static void _offset(Request& r, const String& method_name, MethodParams *params) {
1.6 paf 206: Pool& pool=r.pool();
1.18 paf 207: Table& table=static_cast<VTable *>(r.self)->table();
1.74 paf 208: if(params->size()) {
1.133 paf 209: bool absolute=false;
210: if(params->size()>1) {
211: const String& whence=params->as_string(0, "whence must be string");
212: if(whence=="cur")
1.134 paf 213: absolute=false;
1.133 paf 214: else if(whence=="set")
1.134 paf 215: absolute=true;
1.133 paf 216: else
1.134 paf 217: throw Exception(0, 0,
218: &whence,
219: "is invalid whence, valid are 'cur' or 'set'");
220: }
1.133 paf 221:
222: Value& offset_expr=params->as_junction(params->size()-1, "offset must be expression");
223: table.offset(absolute, r.process(offset_expr).as_int());
1.74 paf 224: } else {
1.37 paf 225: Value& value=*new(pool) VInt(pool, table.current());
1.93 parser 226: value.set_name(method_name);
1.15 paf 227: r.write_no_lang(value);
1.6 paf 228: }
229: }
230:
1.61 paf 231: static void _menu(Request& r, const String& method_name, MethodParams *params) {
1.90 parser 232: Value& body_code=params->as_junction(0, "body must be code");
1.7 paf 233:
1.122 parser 234: Value *delim_maybe_code=params->size()>1?¶ms->get(1):0;
1.7 paf 235:
1.64 paf 236: VTable& vtable=*static_cast<VTable *>(r.self);
237: Table& table=vtable.table();
1.7 paf 238: bool need_delim=false;
1.99 parser 239: int saved_current=table.current();
240: int size=table.size();
241: for(int row=0; row<size; row++) {
1.22 paf 242: table.set_current(row);
1.7 paf 243:
1.12 paf 244: Value& processed_body=r.process(body_code);
1.121 parser 245: if(delim_maybe_code) { // delimiter set?
1.7 paf 246: const String *string=processed_body.get_string();
247: if(need_delim && string && string->size()) // need delim & iteration produced string?
1.121 parser 248: r.write_pass_lang(r.process(*delim_maybe_code));
1.7 paf 249: need_delim=true;
250: }
251: r.write_pass_lang(processed_body);
252: }
1.99 parser 253: table.set_current(saved_current);
1.7 paf 254: }
255:
1.110 parser 256: #ifndef DOXYGEN
1.74 paf 257: struct Row_info {
258: Table *table;
259: int key_field;
260: Array *value_fields;
261: Hash *hash;
262: };
1.110 parser 263: #endif
1.74 paf 264: static void table_row_to_hash(Array::Item *value, void *info) {
265: Array& row=*static_cast<Array *>(value);
266: Row_info& ri=*static_cast<Row_info *>(info);
267: Pool& pool=ri.table->pool();
268:
1.76 paf 269: if(ri.key_field<row.size()) {
270: VHash& result=*new(pool) VHash(pool);
1.128 parser 271: Hash& hash=*result.get_hash(0);
1.74 paf 272: for(int i=0; i<ri.value_fields->size(); i++) {
273: int value_field=ri.value_fields->get_int(i);
274: if(value_field<row.size())
275: hash.put(
1.91 parser 276: *ri.table->columns()->get_string(value_field),
1.74 paf 277: new(pool) VString(*row.get_string(value_field)));
278: }
279:
1.77 paf 280: ri.hash->put(*row.get_string(ri.key_field), &result);
1.74 paf 281: }
282: }
283: static void _hash(Request& r, const String& method_name, MethodParams *params) {
1.97 parser 284: Pool& pool=r.pool();
1.123 parser 285: Table& self_table=static_cast<VTable *>(r.self)->table();
1.97 parser 286: Value& result=*new(pool) VHash(pool);
1.123 parser 287: if(const Array *columns=self_table.columns())
1.74 paf 288: if(columns->size()>1) {
1.90 parser 289: const String& key_field_name=params->as_no_junction(0,
1.74 paf 290: "key field name must not be code").as_string();
1.123 parser 291: int key_field=self_table.column_name2index(key_field_name, true);
292:
293: Array value_fields(pool);
294: if(params->size()>1) {
295: Value& value_fields_param=params->as_no_junction(1, "value field(s) must not be code");
296: if(value_fields_param.is_string()) {
297: value_fields+=self_table.column_name2index(value_fields_param.as_string(), true);
298: } else if(Table *value_fields_table=value_fields_param.get_table()) {
299: for(int i=0; i<value_fields_table->size(); i++) {
300: const String& value_field_name=
301: *static_cast<Array *>(value_fields_table->get(i))->get_string(0);
302: value_fields+=self_table.column_name2index(value_field_name, true);
303: }
304: } else
1.127 parser 305: throw Exception(0, 0,
1.123 parser 306: &method_name,
307: "value field(s) must be string or self_table"
308: );
309: } else { // by all columns, including key
1.74 paf 310: for(int i=0; i<columns->size(); i++)
1.123 parser 311: value_fields+=i;
1.74 paf 312: }
313:
314: // integers: key_field & value_fields
1.128 parser 315: Row_info row_info={&self_table, key_field, &value_fields, result.get_hash(0)};
1.123 parser 316: self_table.for_each(table_row_to_hash, &row_info);
1.74 paf 317: }
1.97 parser 318: result.set_name(method_name);
319: r.write_no_lang(result);
1.74 paf 320: }
321:
1.110 parser 322: #ifndef DOXYGEN
1.78 paf 323: struct Table_seq_item {
1.34 paf 324: Array *row;
325: union {
326: char *c_str;
327: double d;
328: } value;
1.32 paf 329: };
1.110 parser 330: #endif
1.34 paf 331: static int sort_cmp_string(const void *a, const void *b) {
332: return strcmp(
1.78 paf 333: static_cast<const Table_seq_item *>(a)->value.c_str,
334: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 335: );
336: }
337: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 338: double va=static_cast<const Table_seq_item *>(a)->value.d;
339: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 340: if(va<vb)
341: return -1;
342: else if(va>vb)
343: return +1;
344: else
345: return 0;
346: }
1.61 paf 347: static void _sort(Request& r, const String& method_name, MethodParams *params) {
1.101 parser 348: Pool& pool=r.pool();
1.90 parser 349: Value& key_maker=params->as_junction(0, "key-maker must be code");
1.61 paf 350:
1.122 parser 351: bool reverse=params->size()>1/*..[desc|asc|]*/?
1.103 parser 352: reverse=params->as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 353: false; // default=asc
1.32 paf 354:
1.101 parser 355: Table& old_table=static_cast<VTable *>(r.self)->table();
356: Table& new_table=*new(pool) Table(pool, &method_name, old_table.columns());
1.34 paf 357:
1.101 parser 358: Table_seq_item *seq=(Table_seq_item *)pool.malloc(sizeof(Table_seq_item)*old_table.size());
1.34 paf 359: int i;
360:
361: // calculate key values
362: bool key_values_are_strings=true;
1.101 parser 363: // save 'current'
364: int saved_current=old_table.current();
365: for(i=0; i<old_table.size(); i++) {
366: old_table.set_current(i);
1.32 paf 367: // calculate key value
1.101 parser 368: seq[i].row=(MethodParams *)old_table.get(i);
1.34 paf 369: Value& value=*r.process(key_maker).as_expr_result(true/*return string as-is*/);
370: if(i==0) // determining key values type by first one
371: key_values_are_strings=value.is_string();
372:
373: if(key_values_are_strings)
374: seq[i].value.c_str=value.as_string().cstr();
375: else
376: seq[i].value.d=value.as_double();
1.32 paf 377: }
1.101 parser 378: // restore 'current'
379: old_table.set_current(saved_current);
1.32 paf 380: // sort keys
1.101 parser 381: _qsort(seq, old_table.size(), sizeof(Table_seq_item),
1.34 paf 382: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 383:
1.34 paf 384: // reorder table as they require in 'seq'
1.101 parser 385: for(i=0; i<old_table.size(); i++)
386: new_table+=seq[reverse?old_table.size()-1-i:i].row;
1.32 paf 387:
1.116 parser 388: // replace any previous table value
389: static_cast<VTable *>(r.self)->set_table(new_table);
1.32 paf 390: }
391:
1.61 paf 392: static void _locate(Request& r, const String& method_name, MethodParams *params) {
1.72 paf 393: Pool& pool=r.pool();
394:
1.36 paf 395: VTable& vtable=*static_cast<VTable *>(r.self);
396: Table& table=vtable.table();
1.72 paf 397: Value& result=*new(pool) VBool(pool, table.locate(
1.120 parser 398: params->as_string(0, "column name must be string"),
399: params->as_string(1, "value must be string")
400: ));
1.72 paf 401: result.set_name(method_name);
402: r.write_no_lang(result);
1.37 paf 403: }
404:
1.61 paf 405: static void _flip(Request& r, const String& method_name, MethodParams *params) {
1.39 paf 406: Pool& pool=r.pool();
407: VTable& vtable=*static_cast<VTable *>(r.self);
408:
409: Table& old_table=*vtable.get_table();
410: Table& new_table=*new(pool) Table(pool, &method_name, 0/*nameless*/);
411: if(old_table.size())
412: if(int old_cols=old_table.at(0).size())
413: for(int column=0; column<old_cols; column++) {
414: Array& new_row=*new(pool) Array(pool, old_table.size());
415: for(int i=0; i<old_table.size(); i++) {
416: const Array& old_row=old_table.at(i);
1.126 parser 417: new_row+=column<old_row.size()?old_row.get(column):new(pool) String(pool);
1.39 paf 418: }
419: new_table+=&new_row;
420: }
421:
1.99 parser 422: r.write_no_lang(*new(pool) VTable(pool, &new_table));
1.39 paf 423: }
424:
1.61 paf 425: static void _append(Request& r, const String& method_name, MethodParams *params) {
1.41 paf 426: Pool& pool=r.pool();
1.134 paf 427: // data
428: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.61 paf 429: const String& string=
1.90 parser 430: r.process(params->as_junction(0, "body must be code")).as_string();
1.41 paf 431:
432: // parse cells
433: Array& row=*new(pool) Array(pool);
1.137 ! paf 434: string.split(row, 0, "\t", 1, String::UL_AS_IS);
1.41 paf 435:
1.66 paf 436: VTable& vtable=*static_cast<VTable *>(r.self);
437: vtable.table()+=&row;
1.41 paf 438: }
439:
1.61 paf 440: static void _join(Request& r, const String& method_name, MethodParams *params) {
1.42 paf 441: Pool& pool=r.pool();
442:
1.90 parser 443: Table *maybe_src=params->as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 444: if(!maybe_src)
1.127 parser 445: throw Exception(0, 0,
1.91 parser 446: &method_name,
1.42 paf 447: "source is not a table");
448:
449: Table& src=*maybe_src;
450: Table& dest=static_cast<VTable *>(r.self)->table();
451: if(&src == &dest)
1.127 parser 452: throw Exception(0, 0,
1.91 parser 453: &method_name,
1.42 paf 454: "source and destination are same table");
455:
456: if(const Array *dest_columns=dest.columns()) { // dest is named
457: int saved_src_current=src.current();
458: for(int src_row=0; src_row<src.size(); src_row++) {
459: src.set_current(src_row);
460: Array& dest_row=*new(pool) Array(pool);
461: for(int dest_column=0; dest_column<dest_columns->size(); dest_column++)
462: dest_row+=src.item(*dest_columns->get_string(dest_column));
463: dest+=&dest_row;
464: }
465: src.set_current(saved_src_current);
466: } else { // dest is nameless
467: for(int src_row=0; src_row<src.size(); src_row++)
468: dest+=&src.at(src_row);
469: }
470: }
471:
1.94 parser 472: #ifndef DOXYGEN
473: class Table_sql_event_handlers : public SQL_Driver_query_event_handlers {
474: public:
475: Table_sql_event_handlers(Pool& apool, const String& amethod_name,
476: const String& astatement_string, const char *astatement_cstr) :
477: pool(apool),
478: method_name(amethod_name),
479: statement_string(astatement_string),
480: statement_cstr(astatement_cstr),
481: columns(*new(pool) Array(pool)),
1.134 paf 482: row(0),
1.94 parser 483: table(0)
484: {
485: }
486:
487: void add_column(void *ptr, size_t size) {
488: String *column=new(pool) String(pool);
489: column->APPEND_TAINTED(
490: (const char *)ptr, size,
491: statement_cstr, 0);
492: columns+=column;
493: }
494: void before_rows() {
495: table=new(pool) Table(pool, &method_name, &columns);
496: }
497: void add_row() {
498: (*table)+=(row=new(pool) Array(pool));
499: }
500: void add_row_cell(void *ptr, size_t size) {
501: String *cell=new(pool) String(pool);
502: if(size)
503: cell->APPEND_TAINTED(
504: (const char *)ptr, size,
1.134 paf 505: statement_cstr, table->size()-1);
1.94 parser 506: (*row)+=cell;
507: }
508:
509: private:
510: Pool& pool;
511: const String& method_name;
512: const String& statement_string; const char *statement_cstr;
513: Array& columns;
514: Array *row;
515: public:
516: Table *table;
517: };
518: #endif
1.61 paf 519: static void _sql(Request& r, const String& method_name, MethodParams *params) {
1.49 paf 520: Pool& pool=r.pool();
521:
522: if(!r.connection)
1.127 parser 523: throw Exception(0, 0,
1.91 parser 524: &method_name,
1.49 paf 525: "without connect");
526:
1.90 parser 527: Value& statement=params->as_junction(0, "statement must be code");
1.49 paf 528:
1.53 paf 529: ulong limit=0;
1.100 parser 530: ulong offset=0;
1.49 paf 531: if(params->size()>1) {
1.109 parser 532: Value& voptions=params->as_no_junction(1, "options must be hash, not code");
533: if(voptions.is_defined())
1.128 parser 534: if(Hash *options=voptions.get_hash(&method_name)) {
1.109 parser 535: if(Value *vlimit=(Value *)options->get(*sql_limit_name))
536: limit=(ulong)r.process(*vlimit).as_double();
537: if(Value *voffset=(Value *)options->get(*sql_offset_name))
538: offset=(ulong)r.process(*voffset).as_double();
539: } else
1.127 parser 540: throw Exception(0, 0,
1.109 parser 541: &method_name,
542: "options must be hash");
1.49 paf 543: }
544:
1.54 paf 545: Temp_lang temp_lang(r, String::UL_SQL);
546: const String& statement_string=r.process(statement).as_string();
1.55 paf 547: const char *statement_cstr=
548: statement_string.cstr(String::UL_UNSPECIFIED, r.connection);
1.94 parser 549: Table_sql_event_handlers handlers(pool, method_name,
550: statement_string, statement_cstr);
1.127 parser 551: try {
1.135 paf 552: #ifdef RESOURCES_DEBUG
553: struct timeval mt[2];
554: //measure:before
555: gettimeofday(&mt[0],NULL);
556: #endif
1.52 paf 557: r.connection->query(
1.91 parser 558: statement_cstr, offset, limit,
1.94 parser 559: handlers);
1.135 paf 560:
561: #ifdef RESOURCES_DEBUG
562: //measure:after connect
563: gettimeofday(&mt[1],NULL);
564:
565: double t[2];
566: for(int i=0;i<2;i++)
567: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
568:
569: r.sql_request_time+=t[1]-t[0];
570: #endif
1.127 parser 571: } catch(const Exception& e) { // query problem
572: // more specific source [were url]
573: throw Exception(e.type(), e.code(),
574: &statement_string,
575: "%s", e.comment());
1.52 paf 576: }
1.96 parser 577:
578: Table *result=
579: handlers.table?handlers.table: // query resulted in table? return it
580: new(pool) Table(pool, &method_name, 0); // query returned no table, fake it
1.49 paf 581:
582: // replace any previous table value
1.96 parser 583: static_cast<VTable *>(r.self)->set_table(*result);
1.49 paf 584: }
585:
1.88 parser 586: static void _columns(Request& r, const String& method_name, MethodParams *) {
587: Pool& pool=r.pool();
588:
589: Array& result_columns=*new(pool) Array(pool);
1.89 parser 590: result_columns+=new(pool) String(pool, "column");
1.88 parser 591: Table& result_table=*new(pool) Table(pool, &method_name, &result_columns);
592:
593: Table& source_table=static_cast<VTable *>(r.self)->table();
594: if(const Array *source_columns=source_table.columns()) {
1.98 parser 595: Array_iter i(*source_columns);
596: while(i.has_next()) {
1.88 parser 597: Array& result_row=*new(pool) Array(pool);
1.98 parser 598: result_row+=i.next();
1.88 parser 599: result_table+=&result_row;
600: }
601: }
602:
603: VTable& result=*new(pool) VTable(pool, &result_table);
604: result.set_name(method_name);
605: r.write_no_lang(result);
606: }
607:
1.66 paf 608: // constructor
609:
610: MTable::MTable(Pool& apool) : Methoded(apool) {
611: set_name(*NEW String(pool(), TABLE_CLASS_NAME));
612:
1.49 paf 613: // ^table:set{data}
614: // ^table:set[nameless]{data}
1.66 paf 615: add_native_method("set", Method::CT_DYNAMIC, _set, 1, 2);
1.2 paf 616:
1.49 paf 617: // ^table:load[file]
618: // ^table:load[nameless;file]
1.66 paf 619: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 2);
1.22 paf 620:
621: // ^table.save[file]
622: // ^table.save[nameless;file]
1.66 paf 623: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
1.6 paf 624:
625: // ^table.count[]
1.66 paf 626: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 627:
628: // ^table.line[]
1.66 paf 629: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 630:
1.10 paf 631: // ^table.offset[]
1.133 paf 632: // ^table.offset(offset)
633: // ^table.offset[cur|set](offset)
634: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 635:
1.10 paf 636: // ^table.menu{code}
637: // ^table.menu{code}[delim]
1.66 paf 638: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 639:
1.79 paf 640: // ^table:hash[key field name]
1.123 parser 641: // ^table:hash[key field name][value field name(s) string/table]
642: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 2);
1.32 paf 643:
1.102 parser 644: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
645: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 646: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 647:
1.36 paf 648: // ^table.locate[field;value]
1.66 paf 649: add_native_method("locate", Method::CT_DYNAMIC, _locate, 2, 2);
1.39 paf 650:
651: // ^table.flip[]
1.66 paf 652: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 653:
654: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 655: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 656:
657: // ^table.join[table]
1.66 paf 658: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 1);
1.49 paf 659:
660:
1.100 parser 661: // ^table:sql[query]
662: // ^table:sql[query][$.limit(1) $.offset(2)]
663: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 664:
665: // ^table:columns[]
666: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 0);
1.66 paf 667: }
668:
669: // global variable
670:
671: Methoded *table_class;
672:
673: // creator
674:
675: Methoded *MTable_create(Pool& pool) {
676: return table_class=new(pool) MTable(pool);
1.40 paf 677: }
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