Annotation of parser3/src/classes/table.C, revision 1.163
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.143 paf 4: Copyright (c) 2001, 2002 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:
1.163 ! paf 8: static const char* IDENT_TABLE_C="$Date: 2002/09/17 09:30:06 $";
1.1 paf 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: // class
19:
20: class MTable : public Methoded {
21: public: // VStateless_class
22: Value *create_new_value(Pool& pool) { return new(pool) VTable(pool); }
23:
24: public:
25: MTable(Pool& pool);
1.70 paf 26:
27: public: // Methoded
1.66 paf 28: bool used_directly() { return true; }
29: };
1.1 paf 30:
31: // methods
1.66 paf 32:
1.157 paf 33: static void get_copy_options(Request& r, const String& method_name, MethodParams *params, int param_index,
34: const Table& source,
35: int& offset,
36: int& limit) {
37: offset=0;
38: limit=0;
39: if(params->size()<=param_index)
40: return;
41:
42: Value& voptions=params->as_no_junction(param_index, "options must be hash, not code");
1.158 paf 43: if(!voptions.is_string()) {
1.157 paf 44: if(Hash *options=voptions.get_hash(&method_name)) {
45: if(Value *voffset=(Value *)options->get(*sql_offset_name))
46: if(voffset->is_string()) {
47: const String& soffset=*voffset->get_string();
48: if(soffset == "cur")
49: offset=source.current();
50: else
51: throw Exception("parser.runtime",
52: &soffset,
53: "must be 'cur' string or expression");
54: } else
55: offset=r.process_to_value(*voffset).as_int();
56: if(Value *vlimit=(Value *)options->get(*sql_limit_name))
57: limit=r.process_to_value(*vlimit).as_int();
58: } else
59: throw Exception("parser.runtime",
60: &method_name,
61: "options must be hash");
1.158 paf 62: }
63: if(!limit) // zero limit = sould be 'nothing to copy', for methods zero means 'all'
64: limit=-1; // thus fixing
1.157 paf 65: }
66:
1.142 paf 67: static void _create(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 68: Pool& pool=r.pool();
1.157 paf 69: // clone/copy part?
70: if(const Table *source=params->get(0).get_table()) {
71: int offset, limit;
72: get_copy_options(r, method_name, params, 1, *source,
73: offset, limit);
74: static_cast<VTable *>(r.self)->set_table(*new(pool) Table(pool, *source, offset, limit));
75: return;
76: }
1.142 paf 77:
1.1 paf 78: // data is last parameter
1.45 paf 79: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.134 paf 80: const String& data=
1.147 paf 81: r.process_to_string(params->as_junction(params->size()-1, "body must be code"));
1.44 paf 82:
83: size_t pos_after=0;
84: // parse columns
85: Array *columns;
86: if(params->size()==2) {
87: columns=0;
1.21 paf 88: } else {
1.44 paf 89: columns=new(pool) Array(pool);
90:
91: Array head(pool);
1.137 paf 92: data.split(head, &pos_after, "\n", 1, String::UL_AS_IS, 1);
1.44 paf 93: if(head.size())
1.137 paf 94: head.get_string(0)->split(*columns, 0, "\t", 1, String::UL_AS_IS);
1.44 paf 95: }
96:
97: Table& table=*new(pool) Table(pool, &method_name, columns);
98: // parse cells
99: Array rows(pool);
1.137 paf 100: data.split(rows, &pos_after, "\n", 1, String::UL_AS_IS);
1.98 parser 101: Array_iter i(rows);
102: while(i.has_next()) {
1.44 paf 103: Array& row=*new(pool) Array(pool);
1.98 parser 104: const String& string=*i.next_string();
1.118 parser 105: // remove comment lines
106: if(!string.size())
1.44 paf 107: continue;
108:
1.137 paf 109: string.split(row, 0, "\t", 1, String::UL_AS_IS);
1.44 paf 110: table+=&row;
1.17 paf 111: }
1.1 paf 112:
1.44 paf 113: // replace any previous table value
114: static_cast<VTable *>(r.self)->set_table(table);
115: }
116:
1.61 paf 117: static void _load(Request& r, const String& method_name, MethodParams *params) {
1.44 paf 118: Pool& pool=r.pool();
119: // filename is last parameter
1.125 parser 120: Value& vfile_name=params->as_no_junction(params->size()-1,
1.61 paf 121: "file name must not be code");
1.44 paf 122:
123: // loading text
1.125 parser 124: char *data=file_read_text(pool, r.absolute(vfile_name.as_string()));
1.44 paf 125:
1.1 paf 126: // parse columns
127: Array *columns;
128: #ifndef NO_STRING_ORIGIN
129: const Origin& origin=method_name.origin();
1.2 paf 130: const char *file=origin.file;
1.1 paf 131: uint line=origin.line;
132: #endif
133: if(params->size()==2) {
1.139 paf 134: columns=0; // nameless
1.1 paf 135: } else {
136: columns=new(pool) Array(pool);
137:
1.139 paf 138: while(char *row_chars=getrow(&data)) {
139: // remove empty&comment lines
140: if(!*row_chars || *row_chars == '#')
141: continue;
1.1 paf 142: do {
143: String *name=new(pool) String(pool);
1.45 paf 144: name->APPEND_TAINTED(lsplit(&row_chars, '\t'), 0, file, line++);
1.1 paf 145: *columns+=name;
146: } while(row_chars);
1.139 paf 147:
148: break;
149: }
1.1 paf 150: }
151:
152: // parse cells
1.27 paf 153: Table& table=*new(pool) Table(pool, &method_name, columns);
1.1 paf 154: char *row_chars;
155: while(row_chars=getrow(&data)) {
1.118 parser 156: // remove empty&comment lines
157: if(!*row_chars || *row_chars == '#')
1.28 paf 158: continue;
1.1 paf 159: Array *row=new(pool) Array(pool);
160: while(char *cell_chars=lsplit(&row_chars, '\t')) {
161: String *cell=new(pool) String(pool);
1.44 paf 162: cell->APPEND_TAINTED(cell_chars, 0, file, line);
1.1 paf 163: *row+=cell;
164: }
1.107 parser 165: #ifndef NO_STRING_ORIGIN
1.1 paf 166: line++;
1.107 parser 167: #endif
1.1 paf 168: table+=row;
169: };
170:
171: // replace any previous table value
1.18 paf 172: static_cast<VTable *>(r.self)->set_table(table);
1.1 paf 173: }
1.2 paf 174:
1.146 paf 175: /// @todo "x\nx" "xxx""xx"
1.61 paf 176: static void _save(Request& r, const String& method_name, MethodParams *params) {
1.22 paf 177: Pool& pool=r.pool();
1.125 parser 178: Value& vfile_name=params->as_no_junction(params->size()-1,
1.61 paf 179: "file name must not be code");
1.22 paf 180:
1.159 paf 181: Table& table=static_cast<VTable *>(r.self)->table(&method_name);
1.31 paf 182:
1.129 paf 183: bool do_append=false;
1.31 paf 184: String sdata(pool);
1.129 paf 185: if(params->size()==1) { // named output
1.31 paf 186: // write out names line
187: if(table.columns()) { // named table
1.98 parser 188: Array_iter i(*table.columns());
189: while(i.has_next()) {
190: sdata.append(*i.next_string(), //*static_cast<String *>(table.columns()->quick_get(column)),
191: String::UL_TABLE);
192: if(i.has_next())
1.31 paf 193: sdata.APPEND_CONST("\t");
194: }
195: } else { // nameless table
1.98 parser 196: if(int lsize=table.size()?static_cast<Array *>(table.get(0))->size():0)
1.31 paf 197: for(int column=0; column<lsize; column++) {
1.106 parser 198: char *cindex_tab=(char *)pool.malloc(MAX_NUMBER);
1.31 paf 199: snprintf(cindex_tab, MAX_NUMBER, "%d\t", column);
200: sdata.APPEND_CONST(cindex_tab);
201: }
202: else
203: sdata.APPEND_CONST("empty nameless table");
204: }
205: sdata.APPEND_CONST("\n");
1.129 paf 206: } else { // mode specified
207: const String& mode=params->as_string(0, "mode must be string");
208: if(mode=="append")
209: do_append=true;
210: else if(mode=="nameless")
211: /*ok, already skipped names output*/;
212: else
1.146 paf 213: throw Exception("parser.runtime",
1.129 paf 214: &mode,
215: "unknown mode, must be 'append'");
216:
1.31 paf 217: }
218: // data lines
1.98 parser 219: Array_iter i(table);
220: while(i.has_next()) {
221: Array_iter c(*static_cast<Array *>(i.next()));
222: while(c.has_next()) {
1.153 paf 223: if(const String *s=c.next_string())
224: sdata.append(*s,
225: String::UL_TABLE);
1.98 parser 226: if(c.has_next())
1.31 paf 227: sdata.APPEND_CONST("\t");
228: }
229: sdata.APPEND_CONST("\n");
230: }
231:
232: // write
1.141 paf 233: file_write(r.absolute(vfile_name.as_string()),
1.129 paf 234: sdata.cstr(), sdata.size(), true, do_append);
1.22 paf 235: }
236:
1.93 parser 237: static void _count(Request& r, const String& method_name, MethodParams *) {
1.6 paf 238: Pool& pool=r.pool();
1.159 paf 239: int result=static_cast<VTable *>(r.self)->table(&method_name).size();
1.151 paf 240: r.write_no_lang(*new(pool) VInt(pool, result));
1.6 paf 241: }
242:
1.61 paf 243: static void _line(Request& r, const String& method_name, MethodParams *) {
1.6 paf 244: Pool& pool=r.pool();
1.159 paf 245: int result=1+static_cast<VTable *>(r.self)->table(&method_name).current();
1.151 paf 246: r.write_no_lang(*new(pool) VInt(pool, result));
1.6 paf 247: }
248:
1.61 paf 249: static void _offset(Request& r, const String& method_name, MethodParams *params) {
1.6 paf 250: Pool& pool=r.pool();
1.159 paf 251: Table& table=static_cast<VTable *>(r.self)->table(&method_name);
1.74 paf 252: if(params->size()) {
1.133 paf 253: bool absolute=false;
254: if(params->size()>1) {
255: const String& whence=params->as_string(0, "whence must be string");
256: if(whence=="cur")
1.134 paf 257: absolute=false;
1.133 paf 258: else if(whence=="set")
1.134 paf 259: absolute=true;
1.133 paf 260: else
1.146 paf 261: throw Exception("parser.runtime",
1.134 paf 262: &whence,
263: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 264: }
1.133 paf 265:
266: Value& offset_expr=params->as_junction(params->size()-1, "offset must be expression");
1.147 paf 267: table.offset(absolute, r.process_to_value(offset_expr).as_int());
1.151 paf 268: } else
269: r.write_no_lang(*new(pool) VInt(pool, table.current()));
1.6 paf 270: }
271:
1.61 paf 272: static void _menu(Request& r, const String& method_name, MethodParams *params) {
1.90 parser 273: Value& body_code=params->as_junction(0, "body must be code");
1.7 paf 274:
1.122 parser 275: Value *delim_maybe_code=params->size()>1?¶ms->get(1):0;
1.7 paf 276:
1.159 paf 277: Table& table=static_cast<VTable *>(r.self)->table(&method_name);
1.7 paf 278: bool need_delim=false;
1.99 parser 279: int saved_current=table.current();
280: int size=table.size();
281: for(int row=0; row<size; row++) {
1.22 paf 282: table.set_current(row);
1.7 paf 283:
1.161 paf 284: StringOrValue sv_processed=r.process(body_code);
285: const String *s_processed=sv_processed.get_string();
286: if(delim_maybe_code && s_processed && s_processed->size()) { // delimiter set and we have body
287: if(need_delim) // need delim & iteration produced string?
1.150 paf 288: r.write_pass_lang(r.process(*delim_maybe_code));
1.7 paf 289: need_delim=true;
290: }
1.161 paf 291: r.write_pass_lang(sv_processed);
1.7 paf 292: }
1.99 parser 293: table.set_current(saved_current);
1.7 paf 294: }
295:
1.110 parser 296: #ifndef DOXYGEN
1.74 paf 297: struct Row_info {
298: Table *table;
299: int key_field;
300: Array *value_fields;
301: Hash *hash;
1.163 ! paf 302: bool distinct;
1.74 paf 303: };
1.110 parser 304: #endif
1.74 paf 305: static void table_row_to_hash(Array::Item *value, void *info) {
306: Array& row=*static_cast<Array *>(value);
307: Row_info& ri=*static_cast<Row_info *>(info);
308: Pool& pool=ri.table->pool();
309:
1.76 paf 310: if(ri.key_field<row.size()) {
311: VHash& result=*new(pool) VHash(pool);
1.128 parser 312: Hash& hash=*result.get_hash(0);
1.74 paf 313: for(int i=0; i<ri.value_fields->size(); i++) {
314: int value_field=ri.value_fields->get_int(i);
315: if(value_field<row.size())
316: hash.put(
1.91 parser 317: *ri.table->columns()->get_string(value_field),
1.74 paf 318: new(pool) VString(*row.get_string(value_field)));
319: }
320:
1.162 paf 321: const String& key=*row.get_string(ri.key_field);
322: if(ri.hash->put_dont_replace(key, &result)) // put. existed?
1.163 ! paf 323: if(!ri.distinct)
! 324: throw Exception("parser.runtime",
! 325: &key,
! 326: "duplicate key");
1.74 paf 327: }
328: }
329: static void _hash(Request& r, const String& method_name, MethodParams *params) {
1.97 parser 330: Pool& pool=r.pool();
1.159 paf 331: Table& self_table=static_cast<VTable *>(r.self)->table(&method_name);
1.97 parser 332: Value& result=*new(pool) VHash(pool);
1.152 paf 333: if(const Array *columns=self_table.columns())
334: if(columns->size()>0) {
1.90 parser 335: const String& key_field_name=params->as_no_junction(0,
1.74 paf 336: "key field name must not be code").as_string();
1.123 parser 337: int key_field=self_table.column_name2index(key_field_name, true);
338:
1.163 ! paf 339: bool distinct=false;
! 340: int param_index=params->size()-1;
! 341: if(Hash *options=
! 342: params->as_no_junction(param_index, "param must not be code").get_hash(0)) {
! 343: --param_index;
! 344: int valid_options=0;
! 345: if(Value *vdistinct=(Value *)options->get(*sql_distinct_name)) {
! 346: valid_options++;
! 347: distinct=r.process_to_value(*vdistinct).as_bool();
! 348: }
! 349: if(valid_options!=options->size())
! 350: throw Exception("parser.runtime",
! 351: &method_name,
! 352: "called with invalid option");
! 353: }
! 354: if(param_index==2) // bad options param type
! 355: throw Exception("parser.runtime",
! 356: &method_name,
! 357: "options must be hash");
! 358:
1.123 parser 359: Array value_fields(pool);
1.163 ! paf 360: if(param_index>0) {
! 361: Value& value_fields_param=params->as_no_junction(param_index, "value field(s) must not be code");
1.123 parser 362: if(value_fields_param.is_string()) {
363: value_fields+=self_table.column_name2index(value_fields_param.as_string(), true);
364: } else if(Table *value_fields_table=value_fields_param.get_table()) {
365: for(int i=0; i<value_fields_table->size(); i++) {
366: const String& value_field_name=
367: *static_cast<Array *>(value_fields_table->get(i))->get_string(0);
368: value_fields+=self_table.column_name2index(value_field_name, true);
369: }
370: } else
1.146 paf 371: throw Exception("parser.runtime",
1.123 parser 372: &method_name,
373: "value field(s) must be string or self_table"
374: );
375: } else { // by all columns, including key
1.74 paf 376: for(int i=0; i<columns->size(); i++)
1.123 parser 377: value_fields+=i;
1.74 paf 378: }
379:
380: // integers: key_field & value_fields
1.163 ! paf 381: Row_info row_info={&self_table, key_field, &value_fields, result.get_hash(0), distinct};
1.123 parser 382: self_table.for_each(table_row_to_hash, &row_info);
1.74 paf 383: }
1.97 parser 384: r.write_no_lang(result);
1.74 paf 385: }
386:
1.110 parser 387: #ifndef DOXYGEN
1.78 paf 388: struct Table_seq_item {
1.34 paf 389: Array *row;
390: union {
391: char *c_str;
392: double d;
393: } value;
1.32 paf 394: };
1.110 parser 395: #endif
1.34 paf 396: static int sort_cmp_string(const void *a, const void *b) {
397: return strcmp(
1.78 paf 398: static_cast<const Table_seq_item *>(a)->value.c_str,
399: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 400: );
401: }
402: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 403: double va=static_cast<const Table_seq_item *>(a)->value.d;
404: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 405: if(va<vb)
406: return -1;
407: else if(va>vb)
408: return +1;
409: else
410: return 0;
411: }
1.61 paf 412: static void _sort(Request& r, const String& method_name, MethodParams *params) {
1.101 parser 413: Pool& pool=r.pool();
1.90 parser 414: Value& key_maker=params->as_junction(0, "key-maker must be code");
1.61 paf 415:
1.122 parser 416: bool reverse=params->size()>1/*..[desc|asc|]*/?
1.103 parser 417: reverse=params->as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 418: false; // default=asc
1.32 paf 419:
1.159 paf 420: Table& old_table=static_cast<VTable *>(r.self)->table(&method_name);
1.101 parser 421: Table& new_table=*new(pool) Table(pool, &method_name, old_table.columns());
1.34 paf 422:
1.101 parser 423: Table_seq_item *seq=(Table_seq_item *)pool.malloc(sizeof(Table_seq_item)*old_table.size());
1.34 paf 424: int i;
425:
426: // calculate key values
427: bool key_values_are_strings=true;
1.101 parser 428: // save 'current'
429: int saved_current=old_table.current();
430: for(i=0; i<old_table.size(); i++) {
431: old_table.set_current(i);
1.32 paf 432: // calculate key value
1.101 parser 433: seq[i].row=(MethodParams *)old_table.get(i);
1.147 paf 434: Value& value=*r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/);
1.34 paf 435: if(i==0) // determining key values type by first one
436: key_values_are_strings=value.is_string();
437:
438: if(key_values_are_strings)
439: seq[i].value.c_str=value.as_string().cstr();
440: else
441: seq[i].value.d=value.as_double();
1.32 paf 442: }
1.101 parser 443: // restore 'current'
444: old_table.set_current(saved_current);
1.32 paf 445: // sort keys
1.101 parser 446: _qsort(seq, old_table.size(), sizeof(Table_seq_item),
1.34 paf 447: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 448:
1.34 paf 449: // reorder table as they require in 'seq'
1.101 parser 450: for(i=0; i<old_table.size(); i++)
451: new_table+=seq[reverse?old_table.size()-1-i:i].row;
1.32 paf 452:
1.116 parser 453: // replace any previous table value
454: static_cast<VTable *>(r.self)->set_table(new_table);
1.32 paf 455: }
456:
1.145 paf 457: static bool _locate_expression(Request& r, const String& method_name, MethodParams *params) {
458: if(params->size()>1)
1.146 paf 459: throw Exception("parser.runtime",
1.145 paf 460: &method_name,
461: "locate by expression has only one parameter - expression");
462:
463: Value& expression_code=params->as_junction(0, "must be expression");
464:
1.159 paf 465: Table& table=static_cast<VTable *>(r.self)->table(&method_name);
1.145 paf 466: int saved_current=table.current();
467: int size=table.size();
468: for(int row=0; row<size; row++) {
469: table.set_current(row);
470:
1.147 paf 471: if(r.process_to_value(expression_code).as_bool())
1.145 paf 472: return true;
473: }
474: table.set_current(saved_current);
475: return false;
476: }
477: static bool _locate_name_value(Request& r, const String& method_name, MethodParams *params) {
478: if(params->size()>2)
1.146 paf 479: throw Exception("parser.runtime",
1.145 paf 480: &method_name,
481: "locate by name and value has only two parameters - name and value");
1.72 paf 482:
1.159 paf 483: Table& table=static_cast<VTable *>(r.self)->table(&method_name);
1.145 paf 484: return table.locate(
1.120 parser 485: params->as_string(0, "column name must be string"),
486: params->as_string(1, "value must be string")
1.145 paf 487: );
488: }
489: static void _locate(Request& r, const String& method_name, MethodParams *params) {
490: Pool& pool=r.pool();
1.151 paf 491: bool result=params->get(0).get_junction()?
1.145 paf 492: _locate_expression(r, method_name, params) :
1.151 paf 493: _locate_name_value(r, method_name, params);
494: r.write_no_lang(*new(pool) VBool(pool, result));
1.37 paf 495: }
496:
1.61 paf 497: static void _flip(Request& r, const String& method_name, MethodParams *params) {
1.39 paf 498: Pool& pool=r.pool();
1.159 paf 499: Table& old_table=static_cast<VTable *>(r.self)->table(&method_name);
1.39 paf 500: Table& new_table=*new(pool) Table(pool, &method_name, 0/*nameless*/);
501: if(old_table.size())
502: if(int old_cols=old_table.at(0).size())
503: for(int column=0; column<old_cols; column++) {
504: Array& new_row=*new(pool) Array(pool, old_table.size());
505: for(int i=0; i<old_table.size(); i++) {
506: const Array& old_row=old_table.at(i);
1.126 parser 507: new_row+=column<old_row.size()?old_row.get(column):new(pool) String(pool);
1.39 paf 508: }
509: new_table+=&new_row;
510: }
511:
1.99 parser 512: r.write_no_lang(*new(pool) VTable(pool, &new_table));
1.39 paf 513: }
514:
1.61 paf 515: static void _append(Request& r, const String& method_name, MethodParams *params) {
1.41 paf 516: Pool& pool=r.pool();
1.134 paf 517: // data
518: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.61 paf 519: const String& string=
1.147 paf 520: r.process_to_string(params->as_junction(0, "body must be code"));
1.41 paf 521:
522: // parse cells
523: Array& row=*new(pool) Array(pool);
1.137 paf 524: string.split(row, 0, "\t", 1, String::UL_AS_IS);
1.41 paf 525:
1.159 paf 526: static_cast<VTable *>(r.self)->table(&method_name)+=&row;
1.41 paf 527: }
528:
1.61 paf 529: static void _join(Request& r, const String& method_name, MethodParams *params) {
1.42 paf 530: Pool& pool=r.pool();
531:
1.90 parser 532: Table *maybe_src=params->as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 533: if(!maybe_src)
1.146 paf 534: throw Exception("parser.runtime",
1.91 parser 535: &method_name,
1.42 paf 536: "source is not a table");
537:
538: Table& src=*maybe_src;
1.159 paf 539: Table& dest=static_cast<VTable *>(r.self)->table(&method_name);
1.42 paf 540: if(&src == &dest)
1.146 paf 541: throw Exception("parser.runtime",
1.91 parser 542: &method_name,
1.42 paf 543: "source and destination are same table");
544:
1.157 paf 545: int offset, limit;
546: get_copy_options(r, method_name, params, 1, src,
547: offset, limit);
548:
1.42 paf 549: if(const Array *dest_columns=dest.columns()) { // dest is named
550: int saved_src_current=src.current();
1.157 paf 551: int m=src.size()-offset;
552: if(!limit || limit>m)
553: limit=m;
554: int end=offset+limit;
555: for(int src_row=offset; src_row<end; src_row++) {
1.42 paf 556: src.set_current(src_row);
557: Array& dest_row=*new(pool) Array(pool);
1.140 paf 558: for(int dest_column=0; dest_column<dest_columns->size(); dest_column++) {
559: const String *src_item=src.item(*dest_columns->get_string(dest_column));
560: dest_row+=src_item?src_item:new(pool) String(pool);
561: }
1.42 paf 562: dest+=&dest_row;
563: }
564: src.set_current(saved_src_current);
565: } else { // dest is nameless
566: for(int src_row=0; src_row<src.size(); src_row++)
567: dest+=&src.at(src_row);
568: }
569: }
570:
1.94 parser 571: #ifndef DOXYGEN
572: class Table_sql_event_handlers : public SQL_Driver_query_event_handlers {
573: public:
574: Table_sql_event_handlers(Pool& apool, const String& amethod_name,
575: const String& astatement_string, const char *astatement_cstr) :
576: pool(apool),
577: method_name(amethod_name),
578: statement_string(astatement_string),
579: statement_cstr(astatement_cstr),
580: columns(*new(pool) Array(pool)),
1.134 paf 581: row(0),
1.94 parser 582: table(0)
583: {
584: }
585:
586: void add_column(void *ptr, size_t size) {
587: String *column=new(pool) String(pool);
588: column->APPEND_TAINTED(
589: (const char *)ptr, size,
590: statement_cstr, 0);
591: columns+=column;
592: }
593: void before_rows() {
594: table=new(pool) Table(pool, &method_name, &columns);
595: }
596: void add_row() {
597: (*table)+=(row=new(pool) Array(pool));
598: }
599: void add_row_cell(void *ptr, size_t size) {
600: String *cell=new(pool) String(pool);
601: if(size)
602: cell->APPEND_TAINTED(
603: (const char *)ptr, size,
1.134 paf 604: statement_cstr, table->size()-1);
1.94 parser 605: (*row)+=cell;
606: }
607:
608: private:
609: Pool& pool;
610: const String& method_name;
611: const String& statement_string; const char *statement_cstr;
612: Array& columns;
613: Array *row;
614: public:
615: Table *table;
616: };
617: #endif
1.61 paf 618: static void _sql(Request& r, const String& method_name, MethodParams *params) {
1.49 paf 619: Pool& pool=r.pool();
620:
1.90 parser 621: Value& statement=params->as_junction(0, "statement must be code");
1.49 paf 622:
1.53 paf 623: ulong limit=0;
1.100 parser 624: ulong offset=0;
1.49 paf 625: if(params->size()>1) {
1.109 parser 626: Value& voptions=params->as_no_junction(1, "options must be hash, not code");
1.156 paf 627: if(!voptions.is_string())
1.128 parser 628: if(Hash *options=voptions.get_hash(&method_name)) {
1.109 parser 629: if(Value *vlimit=(Value *)options->get(*sql_limit_name))
1.147 paf 630: limit=(ulong)r.process_to_value(*vlimit).as_double();
1.109 parser 631: if(Value *voffset=(Value *)options->get(*sql_offset_name))
1.147 paf 632: offset=(ulong)r.process_to_value(*voffset).as_double();
1.109 parser 633: } else
1.146 paf 634: throw Exception("parser.runtime",
1.109 parser 635: &method_name,
636: "options must be hash");
1.49 paf 637: }
638:
1.54 paf 639: Temp_lang temp_lang(r, String::UL_SQL);
1.147 paf 640: const String& statement_string=r.process_to_string(statement);
1.55 paf 641: const char *statement_cstr=
1.138 paf 642: statement_string.cstr(String::UL_UNSPECIFIED, r.connection(&method_name));
1.94 parser 643: Table_sql_event_handlers handlers(pool, method_name,
644: statement_string, statement_cstr);
1.135 paf 645: #ifdef RESOURCES_DEBUG
646: struct timeval mt[2];
647: //measure:before
648: gettimeofday(&mt[0],NULL);
649: #endif
1.160 paf 650: r.connection(&method_name)->query(
651: statement_cstr, offset, limit,
652: handlers,
653: statement_string);
1.135 paf 654:
655: #ifdef RESOURCES_DEBUG
656: //measure:after connect
657: gettimeofday(&mt[1],NULL);
658:
659: double t[2];
660: for(int i=0;i<2;i++)
661: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
662:
663: r.sql_request_time+=t[1]-t[0];
664: #endif
1.96 parser 665:
666: Table *result=
667: handlers.table?handlers.table: // query resulted in table? return it
668: new(pool) Table(pool, &method_name, 0); // query returned no table, fake it
1.49 paf 669:
670: // replace any previous table value
1.96 parser 671: static_cast<VTable *>(r.self)->set_table(*result);
1.49 paf 672: }
673:
1.88 parser 674: static void _columns(Request& r, const String& method_name, MethodParams *) {
675: Pool& pool=r.pool();
676:
677: Array& result_columns=*new(pool) Array(pool);
1.89 parser 678: result_columns+=new(pool) String(pool, "column");
1.88 parser 679: Table& result_table=*new(pool) Table(pool, &method_name, &result_columns);
680:
1.159 paf 681: Table& source_table=static_cast<VTable *>(r.self)->table(&method_name);
1.88 parser 682: if(const Array *source_columns=source_table.columns()) {
1.98 parser 683: Array_iter i(*source_columns);
684: while(i.has_next()) {
1.88 parser 685: Array& result_row=*new(pool) Array(pool);
1.98 parser 686: result_row+=i.next();
1.88 parser 687: result_table+=&result_row;
688: }
689: }
690:
1.151 paf 691: r.write_no_lang(*new(pool) VTable(pool, &result_table));
1.88 parser 692: }
693:
1.148 paf 694: static void _select(Request& r, const String& method_name, MethodParams *params) {
695: Pool& pool=r.pool();
696:
697: Value& vcondition=params->as_junction(0, "condition must be expression");
698:
1.159 paf 699: Table& source_table=static_cast<VTable *>(r.self)->table(&method_name);
1.148 paf 700: Table& result_table=*new(pool) Table(pool,
701: source_table.origin_string(),
702: source_table.columns()
703: );
704:
705: int saved_current=source_table.current();
706: int size=source_table.size();
707: for(int row=0; row<size; row++) {
708: source_table.set_current(row);
709:
1.150 paf 710: bool condition=r.process_to_value(vcondition,
1.149 paf 711: /*0/*no name* /,*/
1.148 paf 712: false/*don't intercept string*/).as_bool();
713:
714: if(condition) // ...condition is true=
715: result_table+=&source_table.at(row); // =green light to go to result
716: }
717: source_table.set_current(saved_current);
718:
1.151 paf 719: r.write_no_lang(*new(pool) VTable(pool, &result_table));
1.148 paf 720: }
721:
1.66 paf 722: // constructor
723:
1.151 paf 724: MTable::MTable(Pool& apool) : Methoded(apool, "table") {
1.142 paf 725: // ^table::create{data}
726: // ^table::create[nameless]{data}
727: // ^table::create[table]
728: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 2);
729: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
730: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 2);
1.2 paf 731:
1.142 paf 732: // ^table::load[file]
733: // ^table::load[nameless;file]
1.66 paf 734: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 2);
1.22 paf 735:
736: // ^table.save[file]
737: // ^table.save[nameless;file]
1.66 paf 738: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
1.6 paf 739:
740: // ^table.count[]
1.66 paf 741: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 742:
743: // ^table.line[]
1.66 paf 744: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 745:
1.10 paf 746: // ^table.offset[]
1.133 paf 747: // ^table.offset(offset)
748: // ^table.offset[cur|set](offset)
749: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 750:
1.10 paf 751: // ^table.menu{code}
752: // ^table.menu{code}[delim]
1.66 paf 753: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 754:
1.79 paf 755: // ^table:hash[key field name]
1.123 parser 756: // ^table:hash[key field name][value field name(s) string/table]
1.163 ! paf 757: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 758:
1.102 parser 759: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
760: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 761: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 762:
1.36 paf 763: // ^table.locate[field;value]
1.145 paf 764: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 2);
1.39 paf 765:
766: // ^table.flip[]
1.66 paf 767: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 768:
769: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 770: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 771:
1.157 paf 772: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
773: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 774:
775:
1.100 parser 776: // ^table:sql[query]
777: // ^table:sql[query][$.limit(1) $.offset(2)]
778: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 779:
780: // ^table:columns[]
781: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 0);
1.148 paf 782:
783: // ^table.select(expression) = table
784: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.66 paf 785: }
786:
787: // global variable
788:
789: Methoded *table_class;
790:
791: // creator
792:
793: Methoded *MTable_create(Pool& pool) {
794: return table_class=new(pool) MTable(pool);
1.40 paf 795: }
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