Annotation of parser3/src/classes/table.C, revision 1.135
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:
1.135 ! paf 7: $Id: table.C,v 1.133.2.2.2.1 2001/12/06 20:23:44 paf Exp $
1.1 paf 8: */
9:
1.105 parser 10: #include "classes.h"
1.24 paf 11: #include "pa_config_includes.h"
1.16 paf 12: #include "pa_common.h"
1.1 paf 13: #include "pa_request.h"
14: #include "pa_vtable.h"
1.6 paf 15: #include "pa_vint.h"
1.51 paf 16: #include "pa_sql_connection.h"
1.72 paf 17: #include "pa_vbool.h"
1.1 paf 18:
1.66 paf 19: // defines
1.1 paf 20:
1.66 paf 21: #define TABLE_CLASS_NAME "table"
22:
23: // class
24:
25: class MTable : public Methoded {
26: public: // VStateless_class
27: Value *create_new_value(Pool& pool) { return new(pool) VTable(pool); }
28:
29: public:
30: MTable(Pool& pool);
1.70 paf 31:
32: public: // Methoded
1.66 paf 33: bool used_directly() { return true; }
34: };
1.1 paf 35:
36: // methods
1.66 paf 37:
1.61 paf 38: static void _set(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 39: Pool& pool=r.pool();
40: // data is last parameter
1.45 paf 41: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.134 paf 42: const String& data=
43: r.process(params->as_junction(params->size()-1, "body must be code")).as_string();
1.44 paf 44:
45: size_t pos_after=0;
46: // parse columns
47: Array *columns;
48: if(params->size()==2) {
49: columns=0;
1.21 paf 50: } else {
1.44 paf 51: columns=new(pool) Array(pool);
52:
53: Array head(pool);
54: data.split(head, &pos_after, "\n", 1, String::UL_CLEAN, 1);
55: if(head.size())
56: head.get_string(0)->split(*columns, 0, "\t", 1, String::UL_CLEAN);
57: }
58:
59: Table& table=*new(pool) Table(pool, &method_name, columns);
60: // parse cells
61: Array rows(pool);
62: data.split(rows, &pos_after, "\n", 1, String::UL_CLEAN);
1.98 parser 63: Array_iter i(rows);
64: while(i.has_next()) {
1.44 paf 65: Array& row=*new(pool) Array(pool);
1.98 parser 66: const String& string=*i.next_string();
1.118 parser 67: // remove comment lines
68: if(!string.size())
1.44 paf 69: continue;
70:
71: string.split(row, 0, "\t", 1, String::UL_CLEAN);
72: table+=&row;
1.17 paf 73: }
1.1 paf 74:
1.44 paf 75: // replace any previous table value
76: static_cast<VTable *>(r.self)->set_table(table);
77: }
78:
1.61 paf 79: static void _load(Request& r, const String& method_name, MethodParams *params) {
1.44 paf 80: Pool& pool=r.pool();
81: // filename is last parameter
1.125 parser 82: Value& vfile_name=params->as_no_junction(params->size()-1,
1.61 paf 83: "file name must not be code");
1.44 paf 84:
85: // loading text
1.125 parser 86: char *data=file_read_text(pool, r.absolute(vfile_name.as_string()));
1.44 paf 87:
1.1 paf 88: // parse columns
89: Array *columns;
90: #ifndef NO_STRING_ORIGIN
91: const Origin& origin=method_name.origin();
1.2 paf 92: const char *file=origin.file;
1.1 paf 93: uint line=origin.line;
94: #endif
95: if(params->size()==2) {
96: columns=0;
97: } else {
98: columns=new(pool) Array(pool);
99:
100: if(char *row_chars=getrow(&data))
101: do {
102: String *name=new(pool) String(pool);
1.45 paf 103: name->APPEND_TAINTED(lsplit(&row_chars, '\t'), 0, file, line++);
1.1 paf 104: *columns+=name;
105: } while(row_chars);
106: }
107:
108: // parse cells
1.27 paf 109: Table& table=*new(pool) Table(pool, &method_name, columns);
1.1 paf 110: char *row_chars;
111: while(row_chars=getrow(&data)) {
1.118 parser 112: // remove empty&comment lines
113: if(!*row_chars || *row_chars == '#')
1.28 paf 114: continue;
1.1 paf 115: Array *row=new(pool) Array(pool);
116: while(char *cell_chars=lsplit(&row_chars, '\t')) {
117: String *cell=new(pool) String(pool);
1.44 paf 118: cell->APPEND_TAINTED(cell_chars, 0, file, line);
1.1 paf 119: *row+=cell;
120: }
1.107 parser 121: #ifndef NO_STRING_ORIGIN
1.1 paf 122: line++;
1.107 parser 123: #endif
1.1 paf 124: table+=row;
125: };
126:
127: // replace any previous table value
1.18 paf 128: static_cast<VTable *>(r.self)->set_table(table);
1.1 paf 129: }
1.2 paf 130:
1.129 paf 131: /// @todo "z\nz" "zzz""zz"
1.61 paf 132: static void _save(Request& r, const String& method_name, MethodParams *params) {
1.22 paf 133: Pool& pool=r.pool();
1.125 parser 134: Value& vfile_name=params->as_no_junction(params->size()-1,
1.61 paf 135: "file name must not be code");
1.22 paf 136:
1.31 paf 137: Table& table=static_cast<VTable *>(r.self)->table();
138:
1.129 paf 139: bool do_append=false;
1.31 paf 140: String sdata(pool);
1.129 paf 141: if(params->size()==1) { // named output
1.31 paf 142: // write out names line
143: if(table.columns()) { // named table
1.98 parser 144: Array_iter i(*table.columns());
145: while(i.has_next()) {
146: sdata.append(*i.next_string(), //*static_cast<String *>(table.columns()->quick_get(column)),
147: String::UL_TABLE);
148: if(i.has_next())
1.31 paf 149: sdata.APPEND_CONST("\t");
150: }
151: } else { // nameless table
1.98 parser 152: if(int lsize=table.size()?static_cast<Array *>(table.get(0))->size():0)
1.31 paf 153: for(int column=0; column<lsize; column++) {
1.106 parser 154: char *cindex_tab=(char *)pool.malloc(MAX_NUMBER);
1.31 paf 155: snprintf(cindex_tab, MAX_NUMBER, "%d\t", column);
156: sdata.APPEND_CONST(cindex_tab);
157: }
158: else
159: sdata.APPEND_CONST("empty nameless table");
160: }
161: sdata.APPEND_CONST("\n");
1.129 paf 162: } else { // mode specified
163: const String& mode=params->as_string(0, "mode must be string");
164: if(mode=="append")
165: do_append=true;
166: else if(mode=="nameless")
167: /*ok, already skipped names output*/;
168: else
169: throw Exception(0, 0,
170: &mode,
171: "unknown mode, must be 'append'");
172:
1.31 paf 173: }
174: // data lines
1.98 parser 175: Array_iter i(table);
176: while(i.has_next()) {
177: Array_iter c(*static_cast<Array *>(i.next()));
178: while(c.has_next()) {
179: sdata.append(*c.next_string(), //*static_cast<String *>(row->quick_get(column)),
180: String::UL_TABLE);
181: if(c.has_next())
1.31 paf 182: sdata.APPEND_CONST("\t");
183: }
184: sdata.APPEND_CONST("\n");
185: }
186:
187: // write
1.125 parser 188: file_write(pool, r.absolute(vfile_name.as_string()),
1.129 paf 189: sdata.cstr(), sdata.size(), true, do_append);
1.22 paf 190: }
191:
1.93 parser 192: static void _count(Request& r, const String& method_name, MethodParams *) {
1.6 paf 193: Pool& pool=r.pool();
1.18 paf 194: Value& value=*new(pool) VInt(pool, static_cast<VTable *>(r.self)->table().size());
1.93 parser 195: value.set_name(method_name);
1.15 paf 196: r.write_no_lang(value);
1.6 paf 197: }
198:
1.61 paf 199: static void _line(Request& r, const String& method_name, MethodParams *) {
1.6 paf 200: Pool& pool=r.pool();
1.37 paf 201: Value& value=*new(pool) VInt(pool, 1+static_cast<VTable *>(r.self)->table().current());
1.93 parser 202: value.set_name(method_name);
1.15 paf 203: r.write_no_lang(value);
1.6 paf 204: }
205:
1.61 paf 206: static void _offset(Request& r, const String& method_name, MethodParams *params) {
1.6 paf 207: Pool& pool=r.pool();
1.18 paf 208: Table& table=static_cast<VTable *>(r.self)->table();
1.74 paf 209: if(params->size()) {
1.133 paf 210: bool absolute=false;
211: if(params->size()>1) {
212: const String& whence=params->as_string(0, "whence must be string");
213: if(whence=="cur")
1.134 paf 214: absolute=false;
1.133 paf 215: else if(whence=="set")
1.134 paf 216: absolute=true;
1.133 paf 217: else
1.134 paf 218: throw Exception(0, 0,
219: &whence,
220: "is invalid whence, valid are 'cur' or 'set'");
221: }
1.133 paf 222:
223: Value& offset_expr=params->as_junction(params->size()-1, "offset must be expression");
224: table.offset(absolute, r.process(offset_expr).as_int());
1.74 paf 225: } else {
1.37 paf 226: Value& value=*new(pool) VInt(pool, table.current());
1.93 parser 227: value.set_name(method_name);
1.15 paf 228: r.write_no_lang(value);
1.6 paf 229: }
230: }
231:
1.61 paf 232: static void _menu(Request& r, const String& method_name, MethodParams *params) {
1.90 parser 233: Value& body_code=params->as_junction(0, "body must be code");
1.7 paf 234:
1.122 parser 235: Value *delim_maybe_code=params->size()>1?¶ms->get(1):0;
1.7 paf 236:
1.64 paf 237: VTable& vtable=*static_cast<VTable *>(r.self);
238: Table& table=vtable.table();
1.7 paf 239: bool need_delim=false;
1.99 parser 240: int saved_current=table.current();
241: int size=table.size();
242: for(int row=0; row<size; row++) {
1.22 paf 243: table.set_current(row);
1.7 paf 244:
1.12 paf 245: Value& processed_body=r.process(body_code);
1.121 parser 246: if(delim_maybe_code) { // delimiter set?
1.7 paf 247: const String *string=processed_body.get_string();
248: if(need_delim && string && string->size()) // need delim & iteration produced string?
1.121 parser 249: r.write_pass_lang(r.process(*delim_maybe_code));
1.7 paf 250: need_delim=true;
251: }
252: r.write_pass_lang(processed_body);
253: }
1.99 parser 254: table.set_current(saved_current);
1.7 paf 255: }
256:
1.110 parser 257: #ifndef DOXYGEN
1.74 paf 258: struct Row_info {
259: Table *table;
260: int key_field;
261: Array *value_fields;
262: Hash *hash;
263: };
1.110 parser 264: #endif
1.74 paf 265: static void table_row_to_hash(Array::Item *value, void *info) {
266: Array& row=*static_cast<Array *>(value);
267: Row_info& ri=*static_cast<Row_info *>(info);
268: Pool& pool=ri.table->pool();
269:
1.76 paf 270: if(ri.key_field<row.size()) {
271: VHash& result=*new(pool) VHash(pool);
1.128 parser 272: Hash& hash=*result.get_hash(0);
1.74 paf 273: for(int i=0; i<ri.value_fields->size(); i++) {
274: int value_field=ri.value_fields->get_int(i);
275: if(value_field<row.size())
276: hash.put(
1.91 parser 277: *ri.table->columns()->get_string(value_field),
1.74 paf 278: new(pool) VString(*row.get_string(value_field)));
279: }
280:
1.77 paf 281: ri.hash->put(*row.get_string(ri.key_field), &result);
1.74 paf 282: }
283: }
284: static void _hash(Request& r, const String& method_name, MethodParams *params) {
1.97 parser 285: Pool& pool=r.pool();
1.123 parser 286: Table& self_table=static_cast<VTable *>(r.self)->table();
1.97 parser 287: Value& result=*new(pool) VHash(pool);
1.123 parser 288: if(const Array *columns=self_table.columns())
1.74 paf 289: if(columns->size()>1) {
1.90 parser 290: const String& key_field_name=params->as_no_junction(0,
1.74 paf 291: "key field name must not be code").as_string();
1.123 parser 292: int key_field=self_table.column_name2index(key_field_name, true);
293:
294: Array value_fields(pool);
295: if(params->size()>1) {
296: Value& value_fields_param=params->as_no_junction(1, "value field(s) must not be code");
297: if(value_fields_param.is_string()) {
298: value_fields+=self_table.column_name2index(value_fields_param.as_string(), true);
299: } else if(Table *value_fields_table=value_fields_param.get_table()) {
300: for(int i=0; i<value_fields_table->size(); i++) {
301: const String& value_field_name=
302: *static_cast<Array *>(value_fields_table->get(i))->get_string(0);
303: value_fields+=self_table.column_name2index(value_field_name, true);
304: }
305: } else
1.127 parser 306: throw Exception(0, 0,
1.123 parser 307: &method_name,
308: "value field(s) must be string or self_table"
309: );
310: } else { // by all columns, including key
1.74 paf 311: for(int i=0; i<columns->size(); i++)
1.123 parser 312: value_fields+=i;
1.74 paf 313: }
314:
315: // integers: key_field & value_fields
1.128 parser 316: Row_info row_info={&self_table, key_field, &value_fields, result.get_hash(0)};
1.123 parser 317: self_table.for_each(table_row_to_hash, &row_info);
1.74 paf 318: }
1.97 parser 319: result.set_name(method_name);
320: r.write_no_lang(result);
1.74 paf 321: }
322:
1.110 parser 323: #ifndef DOXYGEN
1.78 paf 324: struct Table_seq_item {
1.34 paf 325: Array *row;
326: union {
327: char *c_str;
328: double d;
329: } value;
1.32 paf 330: };
1.110 parser 331: #endif
1.34 paf 332: static int sort_cmp_string(const void *a, const void *b) {
333: return strcmp(
1.78 paf 334: static_cast<const Table_seq_item *>(a)->value.c_str,
335: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 336: );
337: }
338: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 339: double va=static_cast<const Table_seq_item *>(a)->value.d;
340: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 341: if(va<vb)
342: return -1;
343: else if(va>vb)
344: return +1;
345: else
346: return 0;
347: }
1.61 paf 348: static void _sort(Request& r, const String& method_name, MethodParams *params) {
1.101 parser 349: Pool& pool=r.pool();
1.90 parser 350: Value& key_maker=params->as_junction(0, "key-maker must be code");
1.61 paf 351:
1.122 parser 352: bool reverse=params->size()>1/*..[desc|asc|]*/?
1.103 parser 353: reverse=params->as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 354: false; // default=asc
1.32 paf 355:
1.101 parser 356: Table& old_table=static_cast<VTable *>(r.self)->table();
357: Table& new_table=*new(pool) Table(pool, &method_name, old_table.columns());
1.34 paf 358:
1.101 parser 359: Table_seq_item *seq=(Table_seq_item *)pool.malloc(sizeof(Table_seq_item)*old_table.size());
1.34 paf 360: int i;
361:
362: // calculate key values
363: bool key_values_are_strings=true;
1.101 parser 364: // save 'current'
365: int saved_current=old_table.current();
366: for(i=0; i<old_table.size(); i++) {
367: old_table.set_current(i);
1.32 paf 368: // calculate key value
1.101 parser 369: seq[i].row=(MethodParams *)old_table.get(i);
1.34 paf 370: Value& value=*r.process(key_maker).as_expr_result(true/*return string as-is*/);
371: if(i==0) // determining key values type by first one
372: key_values_are_strings=value.is_string();
373:
374: if(key_values_are_strings)
375: seq[i].value.c_str=value.as_string().cstr();
376: else
377: seq[i].value.d=value.as_double();
1.32 paf 378: }
1.101 parser 379: // restore 'current'
380: old_table.set_current(saved_current);
1.32 paf 381: // sort keys
1.101 parser 382: _qsort(seq, old_table.size(), sizeof(Table_seq_item),
1.34 paf 383: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 384:
1.34 paf 385: // reorder table as they require in 'seq'
1.101 parser 386: for(i=0; i<old_table.size(); i++)
387: new_table+=seq[reverse?old_table.size()-1-i:i].row;
1.32 paf 388:
1.116 parser 389: // replace any previous table value
390: static_cast<VTable *>(r.self)->set_table(new_table);
1.32 paf 391: }
392:
1.61 paf 393: static void _locate(Request& r, const String& method_name, MethodParams *params) {
1.72 paf 394: Pool& pool=r.pool();
395:
1.36 paf 396: VTable& vtable=*static_cast<VTable *>(r.self);
397: Table& table=vtable.table();
1.72 paf 398: Value& result=*new(pool) VBool(pool, table.locate(
1.120 parser 399: params->as_string(0, "column name must be string"),
400: params->as_string(1, "value must be string")
401: ));
1.72 paf 402: result.set_name(method_name);
403: r.write_no_lang(result);
1.37 paf 404: }
405:
1.61 paf 406: static void _flip(Request& r, const String& method_name, MethodParams *params) {
1.39 paf 407: Pool& pool=r.pool();
408: VTable& vtable=*static_cast<VTable *>(r.self);
409:
410: Table& old_table=*vtable.get_table();
411: Table& new_table=*new(pool) Table(pool, &method_name, 0/*nameless*/);
412: if(old_table.size())
413: if(int old_cols=old_table.at(0).size())
414: for(int column=0; column<old_cols; column++) {
415: Array& new_row=*new(pool) Array(pool, old_table.size());
416: for(int i=0; i<old_table.size(); i++) {
417: const Array& old_row=old_table.at(i);
1.126 parser 418: new_row+=column<old_row.size()?old_row.get(column):new(pool) String(pool);
1.39 paf 419: }
420: new_table+=&new_row;
421: }
422:
1.99 parser 423: r.write_no_lang(*new(pool) VTable(pool, &new_table));
1.39 paf 424: }
425:
1.61 paf 426: static void _append(Request& r, const String& method_name, MethodParams *params) {
1.41 paf 427: Pool& pool=r.pool();
1.134 paf 428: // data
429: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.61 paf 430: const String& string=
1.90 parser 431: r.process(params->as_junction(0, "body must be code")).as_string();
1.41 paf 432:
433: // parse cells
434: Array& row=*new(pool) Array(pool);
1.46 paf 435: string.split(row, 0, "\t", 1, String::UL_CLEAN);
1.41 paf 436:
1.66 paf 437: VTable& vtable=*static_cast<VTable *>(r.self);
438: vtable.table()+=&row;
1.41 paf 439: }
440:
1.61 paf 441: static void _join(Request& r, const String& method_name, MethodParams *params) {
1.42 paf 442: Pool& pool=r.pool();
443:
1.90 parser 444: Table *maybe_src=params->as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 445: if(!maybe_src)
1.127 parser 446: throw Exception(0, 0,
1.91 parser 447: &method_name,
1.42 paf 448: "source is not a table");
449:
450: Table& src=*maybe_src;
451: Table& dest=static_cast<VTable *>(r.self)->table();
452: if(&src == &dest)
1.127 parser 453: throw Exception(0, 0,
1.91 parser 454: &method_name,
1.42 paf 455: "source and destination are same table");
456:
457: if(const Array *dest_columns=dest.columns()) { // dest is named
458: int saved_src_current=src.current();
459: for(int src_row=0; src_row<src.size(); src_row++) {
460: src.set_current(src_row);
461: Array& dest_row=*new(pool) Array(pool);
462: for(int dest_column=0; dest_column<dest_columns->size(); dest_column++)
463: dest_row+=src.item(*dest_columns->get_string(dest_column));
464: dest+=&dest_row;
465: }
466: src.set_current(saved_src_current);
467: } else { // dest is nameless
468: for(int src_row=0; src_row<src.size(); src_row++)
469: dest+=&src.at(src_row);
470: }
471: }
472:
1.94 parser 473: #ifndef DOXYGEN
474: class Table_sql_event_handlers : public SQL_Driver_query_event_handlers {
475: public:
476: Table_sql_event_handlers(Pool& apool, const String& amethod_name,
477: const String& astatement_string, const char *astatement_cstr) :
478: pool(apool),
479: method_name(amethod_name),
480: statement_string(astatement_string),
481: statement_cstr(astatement_cstr),
482: columns(*new(pool) Array(pool)),
1.134 paf 483: row(0),
1.94 parser 484: table(0)
485: {
486: }
487:
488: void add_column(void *ptr, size_t size) {
489: String *column=new(pool) String(pool);
490: column->APPEND_TAINTED(
491: (const char *)ptr, size,
492: statement_cstr, 0);
493: columns+=column;
494: }
495: void before_rows() {
496: table=new(pool) Table(pool, &method_name, &columns);
497: }
498: void add_row() {
499: (*table)+=(row=new(pool) Array(pool));
500: }
501: void add_row_cell(void *ptr, size_t size) {
502: String *cell=new(pool) String(pool);
503: if(size)
504: cell->APPEND_TAINTED(
505: (const char *)ptr, size,
1.134 paf 506: statement_cstr, table->size()-1);
1.94 parser 507: (*row)+=cell;
508: }
509:
510: private:
511: Pool& pool;
512: const String& method_name;
513: const String& statement_string; const char *statement_cstr;
514: Array& columns;
515: Array *row;
516: public:
517: Table *table;
518: };
519: #endif
1.61 paf 520: static void _sql(Request& r, const String& method_name, MethodParams *params) {
1.49 paf 521: Pool& pool=r.pool();
522:
523: if(!r.connection)
1.127 parser 524: throw Exception(0, 0,
1.91 parser 525: &method_name,
1.49 paf 526: "without connect");
527:
1.90 parser 528: Value& statement=params->as_junction(0, "statement must be code");
1.49 paf 529:
1.53 paf 530: ulong limit=0;
1.100 parser 531: ulong offset=0;
1.49 paf 532: if(params->size()>1) {
1.109 parser 533: Value& voptions=params->as_no_junction(1, "options must be hash, not code");
534: if(voptions.is_defined())
1.128 parser 535: if(Hash *options=voptions.get_hash(&method_name)) {
1.109 parser 536: if(Value *vlimit=(Value *)options->get(*sql_limit_name))
537: limit=(ulong)r.process(*vlimit).as_double();
538: if(Value *voffset=(Value *)options->get(*sql_offset_name))
539: offset=(ulong)r.process(*voffset).as_double();
540: } else
1.127 parser 541: throw Exception(0, 0,
1.109 parser 542: &method_name,
543: "options must be hash");
1.49 paf 544: }
545:
1.54 paf 546: Temp_lang temp_lang(r, String::UL_SQL);
547: const String& statement_string=r.process(statement).as_string();
1.55 paf 548: const char *statement_cstr=
549: statement_string.cstr(String::UL_UNSPECIFIED, r.connection);
1.94 parser 550: Table_sql_event_handlers handlers(pool, method_name,
551: statement_string, statement_cstr);
1.127 parser 552: try {
1.135 ! paf 553: #ifdef RESOURCES_DEBUG
! 554: struct timeval mt[2];
! 555: //measure:before
! 556: gettimeofday(&mt[0],NULL);
! 557: #endif
1.52 paf 558: r.connection->query(
1.91 parser 559: statement_cstr, offset, limit,
1.94 parser 560: handlers);
1.135 ! paf 561:
! 562: #ifdef RESOURCES_DEBUG
! 563: //measure:after connect
! 564: gettimeofday(&mt[1],NULL);
! 565:
! 566: double t[2];
! 567: for(int i=0;i<2;i++)
! 568: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
! 569:
! 570: r.sql_request_time+=t[1]-t[0];
! 571: #endif
1.127 parser 572: } catch(const Exception& e) { // query problem
573: // more specific source [were url]
574: throw Exception(e.type(), e.code(),
575: &statement_string,
576: "%s", e.comment());
1.52 paf 577: }
1.96 parser 578:
579: Table *result=
580: handlers.table?handlers.table: // query resulted in table? return it
581: new(pool) Table(pool, &method_name, 0); // query returned no table, fake it
1.49 paf 582:
583: // replace any previous table value
1.96 parser 584: static_cast<VTable *>(r.self)->set_table(*result);
1.49 paf 585: }
586:
1.88 parser 587: static void _columns(Request& r, const String& method_name, MethodParams *) {
588: Pool& pool=r.pool();
589:
590: Array& result_columns=*new(pool) Array(pool);
1.89 parser 591: result_columns+=new(pool) String(pool, "column");
1.88 parser 592: Table& result_table=*new(pool) Table(pool, &method_name, &result_columns);
593:
594: Table& source_table=static_cast<VTable *>(r.self)->table();
595: if(const Array *source_columns=source_table.columns()) {
1.98 parser 596: Array_iter i(*source_columns);
597: while(i.has_next()) {
1.88 parser 598: Array& result_row=*new(pool) Array(pool);
1.98 parser 599: result_row+=i.next();
1.88 parser 600: result_table+=&result_row;
601: }
602: }
603:
604: VTable& result=*new(pool) VTable(pool, &result_table);
605: result.set_name(method_name);
606: r.write_no_lang(result);
607: }
608:
1.66 paf 609: // constructor
610:
611: MTable::MTable(Pool& apool) : Methoded(apool) {
612: set_name(*NEW String(pool(), TABLE_CLASS_NAME));
613:
1.49 paf 614: // ^table:set{data}
615: // ^table:set[nameless]{data}
1.66 paf 616: add_native_method("set", Method::CT_DYNAMIC, _set, 1, 2);
1.2 paf 617:
1.49 paf 618: // ^table:load[file]
619: // ^table:load[nameless;file]
1.66 paf 620: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 2);
1.22 paf 621:
622: // ^table.save[file]
623: // ^table.save[nameless;file]
1.66 paf 624: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
1.6 paf 625:
626: // ^table.count[]
1.66 paf 627: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 628:
629: // ^table.line[]
1.66 paf 630: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 631:
1.10 paf 632: // ^table.offset[]
1.133 paf 633: // ^table.offset(offset)
634: // ^table.offset[cur|set](offset)
635: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 636:
1.10 paf 637: // ^table.menu{code}
638: // ^table.menu{code}[delim]
1.66 paf 639: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 640:
1.79 paf 641: // ^table:hash[key field name]
1.123 parser 642: // ^table:hash[key field name][value field name(s) string/table]
643: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 2);
1.32 paf 644:
1.102 parser 645: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
646: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 647: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 648:
1.36 paf 649: // ^table.locate[field;value]
1.66 paf 650: add_native_method("locate", Method::CT_DYNAMIC, _locate, 2, 2);
1.39 paf 651:
652: // ^table.flip[]
1.66 paf 653: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 654:
655: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 656: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 657:
658: // ^table.join[table]
1.66 paf 659: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 1);
1.49 paf 660:
661:
1.100 parser 662: // ^table:sql[query]
663: // ^table:sql[query][$.limit(1) $.offset(2)]
664: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 665:
666: // ^table:columns[]
667: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 0);
1.66 paf 668: }
669:
670: // global variable
671:
672: Methoded *table_class;
673:
674: // creator
675:
676: Methoded *MTable_create(Pool& pool) {
677: return table_class=new(pool) MTable(pool);
1.40 paf 678: }
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