Annotation of parser3/src/classes/table.C, revision 1.162
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:
1.162 ! paf 8: static const char* IDENT_TABLE_C="$Date: 2002/09/17 08:44:45 $";
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;
302: };
1.110 parser 303: #endif
1.74 paf 304: static void table_row_to_hash(Array::Item *value, void *info) {
305: Array& row=*static_cast<Array *>(value);
306: Row_info& ri=*static_cast<Row_info *>(info);
307: Pool& pool=ri.table->pool();
308:
1.76 paf 309: if(ri.key_field<row.size()) {
310: VHash& result=*new(pool) VHash(pool);
1.128 parser 311: Hash& hash=*result.get_hash(0);
1.74 paf 312: for(int i=0; i<ri.value_fields->size(); i++) {
313: int value_field=ri.value_fields->get_int(i);
314: if(value_field<row.size())
315: hash.put(
1.91 parser 316: *ri.table->columns()->get_string(value_field),
1.74 paf 317: new(pool) VString(*row.get_string(value_field)));
318: }
319:
1.162 ! paf 320: const String& key=*row.get_string(ri.key_field);
! 321: if(ri.hash->put_dont_replace(key, &result)) // put. existed?
! 322: throw Exception("parser.runtime",
! 323: &key,
! 324: "duplicate key");
1.74 paf 325: }
326: }
327: static void _hash(Request& r, const String& method_name, MethodParams *params) {
1.97 parser 328: Pool& pool=r.pool();
1.159 paf 329: Table& self_table=static_cast<VTable *>(r.self)->table(&method_name);
1.97 parser 330: Value& result=*new(pool) VHash(pool);
1.152 paf 331: if(const Array *columns=self_table.columns())
332: if(columns->size()>0) {
1.90 parser 333: const String& key_field_name=params->as_no_junction(0,
1.74 paf 334: "key field name must not be code").as_string();
1.123 parser 335: int key_field=self_table.column_name2index(key_field_name, true);
336:
337: Array value_fields(pool);
338: if(params->size()>1) {
339: Value& value_fields_param=params->as_no_junction(1, "value field(s) must not be code");
340: if(value_fields_param.is_string()) {
341: value_fields+=self_table.column_name2index(value_fields_param.as_string(), true);
342: } else if(Table *value_fields_table=value_fields_param.get_table()) {
343: for(int i=0; i<value_fields_table->size(); i++) {
344: const String& value_field_name=
345: *static_cast<Array *>(value_fields_table->get(i))->get_string(0);
346: value_fields+=self_table.column_name2index(value_field_name, true);
347: }
348: } else
1.146 paf 349: throw Exception("parser.runtime",
1.123 parser 350: &method_name,
351: "value field(s) must be string or self_table"
352: );
353: } else { // by all columns, including key
1.74 paf 354: for(int i=0; i<columns->size(); i++)
1.123 parser 355: value_fields+=i;
1.74 paf 356: }
357:
358: // integers: key_field & value_fields
1.128 parser 359: Row_info row_info={&self_table, key_field, &value_fields, result.get_hash(0)};
1.123 parser 360: self_table.for_each(table_row_to_hash, &row_info);
1.74 paf 361: }
1.97 parser 362: r.write_no_lang(result);
1.74 paf 363: }
364:
1.110 parser 365: #ifndef DOXYGEN
1.78 paf 366: struct Table_seq_item {
1.34 paf 367: Array *row;
368: union {
369: char *c_str;
370: double d;
371: } value;
1.32 paf 372: };
1.110 parser 373: #endif
1.34 paf 374: static int sort_cmp_string(const void *a, const void *b) {
375: return strcmp(
1.78 paf 376: static_cast<const Table_seq_item *>(a)->value.c_str,
377: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 378: );
379: }
380: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 381: double va=static_cast<const Table_seq_item *>(a)->value.d;
382: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 383: if(va<vb)
384: return -1;
385: else if(va>vb)
386: return +1;
387: else
388: return 0;
389: }
1.61 paf 390: static void _sort(Request& r, const String& method_name, MethodParams *params) {
1.101 parser 391: Pool& pool=r.pool();
1.90 parser 392: Value& key_maker=params->as_junction(0, "key-maker must be code");
1.61 paf 393:
1.122 parser 394: bool reverse=params->size()>1/*..[desc|asc|]*/?
1.103 parser 395: reverse=params->as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 396: false; // default=asc
1.32 paf 397:
1.159 paf 398: Table& old_table=static_cast<VTable *>(r.self)->table(&method_name);
1.101 parser 399: Table& new_table=*new(pool) Table(pool, &method_name, old_table.columns());
1.34 paf 400:
1.101 parser 401: Table_seq_item *seq=(Table_seq_item *)pool.malloc(sizeof(Table_seq_item)*old_table.size());
1.34 paf 402: int i;
403:
404: // calculate key values
405: bool key_values_are_strings=true;
1.101 parser 406: // save 'current'
407: int saved_current=old_table.current();
408: for(i=0; i<old_table.size(); i++) {
409: old_table.set_current(i);
1.32 paf 410: // calculate key value
1.101 parser 411: seq[i].row=(MethodParams *)old_table.get(i);
1.147 paf 412: Value& value=*r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/);
1.34 paf 413: if(i==0) // determining key values type by first one
414: key_values_are_strings=value.is_string();
415:
416: if(key_values_are_strings)
417: seq[i].value.c_str=value.as_string().cstr();
418: else
419: seq[i].value.d=value.as_double();
1.32 paf 420: }
1.101 parser 421: // restore 'current'
422: old_table.set_current(saved_current);
1.32 paf 423: // sort keys
1.101 parser 424: _qsort(seq, old_table.size(), sizeof(Table_seq_item),
1.34 paf 425: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 426:
1.34 paf 427: // reorder table as they require in 'seq'
1.101 parser 428: for(i=0; i<old_table.size(); i++)
429: new_table+=seq[reverse?old_table.size()-1-i:i].row;
1.32 paf 430:
1.116 parser 431: // replace any previous table value
432: static_cast<VTable *>(r.self)->set_table(new_table);
1.32 paf 433: }
434:
1.145 paf 435: static bool _locate_expression(Request& r, const String& method_name, MethodParams *params) {
436: if(params->size()>1)
1.146 paf 437: throw Exception("parser.runtime",
1.145 paf 438: &method_name,
439: "locate by expression has only one parameter - expression");
440:
441: Value& expression_code=params->as_junction(0, "must be expression");
442:
1.159 paf 443: Table& table=static_cast<VTable *>(r.self)->table(&method_name);
1.145 paf 444: int saved_current=table.current();
445: int size=table.size();
446: for(int row=0; row<size; row++) {
447: table.set_current(row);
448:
1.147 paf 449: if(r.process_to_value(expression_code).as_bool())
1.145 paf 450: return true;
451: }
452: table.set_current(saved_current);
453: return false;
454: }
455: static bool _locate_name_value(Request& r, const String& method_name, MethodParams *params) {
456: if(params->size()>2)
1.146 paf 457: throw Exception("parser.runtime",
1.145 paf 458: &method_name,
459: "locate by name and value has only two parameters - name and value");
1.72 paf 460:
1.159 paf 461: Table& table=static_cast<VTable *>(r.self)->table(&method_name);
1.145 paf 462: return table.locate(
1.120 parser 463: params->as_string(0, "column name must be string"),
464: params->as_string(1, "value must be string")
1.145 paf 465: );
466: }
467: static void _locate(Request& r, const String& method_name, MethodParams *params) {
468: Pool& pool=r.pool();
1.151 paf 469: bool result=params->get(0).get_junction()?
1.145 paf 470: _locate_expression(r, method_name, params) :
1.151 paf 471: _locate_name_value(r, method_name, params);
472: r.write_no_lang(*new(pool) VBool(pool, result));
1.37 paf 473: }
474:
1.61 paf 475: static void _flip(Request& r, const String& method_name, MethodParams *params) {
1.39 paf 476: Pool& pool=r.pool();
1.159 paf 477: Table& old_table=static_cast<VTable *>(r.self)->table(&method_name);
1.39 paf 478: Table& new_table=*new(pool) Table(pool, &method_name, 0/*nameless*/);
479: if(old_table.size())
480: if(int old_cols=old_table.at(0).size())
481: for(int column=0; column<old_cols; column++) {
482: Array& new_row=*new(pool) Array(pool, old_table.size());
483: for(int i=0; i<old_table.size(); i++) {
484: const Array& old_row=old_table.at(i);
1.126 parser 485: new_row+=column<old_row.size()?old_row.get(column):new(pool) String(pool);
1.39 paf 486: }
487: new_table+=&new_row;
488: }
489:
1.99 parser 490: r.write_no_lang(*new(pool) VTable(pool, &new_table));
1.39 paf 491: }
492:
1.61 paf 493: static void _append(Request& r, const String& method_name, MethodParams *params) {
1.41 paf 494: Pool& pool=r.pool();
1.134 paf 495: // data
496: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.61 paf 497: const String& string=
1.147 paf 498: r.process_to_string(params->as_junction(0, "body must be code"));
1.41 paf 499:
500: // parse cells
501: Array& row=*new(pool) Array(pool);
1.137 paf 502: string.split(row, 0, "\t", 1, String::UL_AS_IS);
1.41 paf 503:
1.159 paf 504: static_cast<VTable *>(r.self)->table(&method_name)+=&row;
1.41 paf 505: }
506:
1.61 paf 507: static void _join(Request& r, const String& method_name, MethodParams *params) {
1.42 paf 508: Pool& pool=r.pool();
509:
1.90 parser 510: Table *maybe_src=params->as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 511: if(!maybe_src)
1.146 paf 512: throw Exception("parser.runtime",
1.91 parser 513: &method_name,
1.42 paf 514: "source is not a table");
515:
516: Table& src=*maybe_src;
1.159 paf 517: Table& dest=static_cast<VTable *>(r.self)->table(&method_name);
1.42 paf 518: if(&src == &dest)
1.146 paf 519: throw Exception("parser.runtime",
1.91 parser 520: &method_name,
1.42 paf 521: "source and destination are same table");
522:
1.157 paf 523: int offset, limit;
524: get_copy_options(r, method_name, params, 1, src,
525: offset, limit);
526:
1.42 paf 527: if(const Array *dest_columns=dest.columns()) { // dest is named
528: int saved_src_current=src.current();
1.157 paf 529: int m=src.size()-offset;
530: if(!limit || limit>m)
531: limit=m;
532: int end=offset+limit;
533: for(int src_row=offset; src_row<end; src_row++) {
1.42 paf 534: src.set_current(src_row);
535: Array& dest_row=*new(pool) Array(pool);
1.140 paf 536: for(int dest_column=0; dest_column<dest_columns->size(); dest_column++) {
537: const String *src_item=src.item(*dest_columns->get_string(dest_column));
538: dest_row+=src_item?src_item:new(pool) String(pool);
539: }
1.42 paf 540: dest+=&dest_row;
541: }
542: src.set_current(saved_src_current);
543: } else { // dest is nameless
544: for(int src_row=0; src_row<src.size(); src_row++)
545: dest+=&src.at(src_row);
546: }
547: }
548:
1.94 parser 549: #ifndef DOXYGEN
550: class Table_sql_event_handlers : public SQL_Driver_query_event_handlers {
551: public:
552: Table_sql_event_handlers(Pool& apool, const String& amethod_name,
553: const String& astatement_string, const char *astatement_cstr) :
554: pool(apool),
555: method_name(amethod_name),
556: statement_string(astatement_string),
557: statement_cstr(astatement_cstr),
558: columns(*new(pool) Array(pool)),
1.134 paf 559: row(0),
1.94 parser 560: table(0)
561: {
562: }
563:
564: void add_column(void *ptr, size_t size) {
565: String *column=new(pool) String(pool);
566: column->APPEND_TAINTED(
567: (const char *)ptr, size,
568: statement_cstr, 0);
569: columns+=column;
570: }
571: void before_rows() {
572: table=new(pool) Table(pool, &method_name, &columns);
573: }
574: void add_row() {
575: (*table)+=(row=new(pool) Array(pool));
576: }
577: void add_row_cell(void *ptr, size_t size) {
578: String *cell=new(pool) String(pool);
579: if(size)
580: cell->APPEND_TAINTED(
581: (const char *)ptr, size,
1.134 paf 582: statement_cstr, table->size()-1);
1.94 parser 583: (*row)+=cell;
584: }
585:
586: private:
587: Pool& pool;
588: const String& method_name;
589: const String& statement_string; const char *statement_cstr;
590: Array& columns;
591: Array *row;
592: public:
593: Table *table;
594: };
595: #endif
1.61 paf 596: static void _sql(Request& r, const String& method_name, MethodParams *params) {
1.49 paf 597: Pool& pool=r.pool();
598:
1.90 parser 599: Value& statement=params->as_junction(0, "statement must be code");
1.49 paf 600:
1.53 paf 601: ulong limit=0;
1.100 parser 602: ulong offset=0;
1.49 paf 603: if(params->size()>1) {
1.109 parser 604: Value& voptions=params->as_no_junction(1, "options must be hash, not code");
1.156 paf 605: if(!voptions.is_string())
1.128 parser 606: if(Hash *options=voptions.get_hash(&method_name)) {
1.109 parser 607: if(Value *vlimit=(Value *)options->get(*sql_limit_name))
1.147 paf 608: limit=(ulong)r.process_to_value(*vlimit).as_double();
1.109 parser 609: if(Value *voffset=(Value *)options->get(*sql_offset_name))
1.147 paf 610: offset=(ulong)r.process_to_value(*voffset).as_double();
1.109 parser 611: } else
1.146 paf 612: throw Exception("parser.runtime",
1.109 parser 613: &method_name,
614: "options must be hash");
1.49 paf 615: }
616:
1.54 paf 617: Temp_lang temp_lang(r, String::UL_SQL);
1.147 paf 618: const String& statement_string=r.process_to_string(statement);
1.55 paf 619: const char *statement_cstr=
1.138 paf 620: statement_string.cstr(String::UL_UNSPECIFIED, r.connection(&method_name));
1.94 parser 621: Table_sql_event_handlers handlers(pool, method_name,
622: statement_string, statement_cstr);
1.135 paf 623: #ifdef RESOURCES_DEBUG
624: struct timeval mt[2];
625: //measure:before
626: gettimeofday(&mt[0],NULL);
627: #endif
1.160 paf 628: r.connection(&method_name)->query(
629: statement_cstr, offset, limit,
630: handlers,
631: statement_string);
1.135 paf 632:
633: #ifdef RESOURCES_DEBUG
634: //measure:after connect
635: gettimeofday(&mt[1],NULL);
636:
637: double t[2];
638: for(int i=0;i<2;i++)
639: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
640:
641: r.sql_request_time+=t[1]-t[0];
642: #endif
1.96 parser 643:
644: Table *result=
645: handlers.table?handlers.table: // query resulted in table? return it
646: new(pool) Table(pool, &method_name, 0); // query returned no table, fake it
1.49 paf 647:
648: // replace any previous table value
1.96 parser 649: static_cast<VTable *>(r.self)->set_table(*result);
1.49 paf 650: }
651:
1.88 parser 652: static void _columns(Request& r, const String& method_name, MethodParams *) {
653: Pool& pool=r.pool();
654:
655: Array& result_columns=*new(pool) Array(pool);
1.89 parser 656: result_columns+=new(pool) String(pool, "column");
1.88 parser 657: Table& result_table=*new(pool) Table(pool, &method_name, &result_columns);
658:
1.159 paf 659: Table& source_table=static_cast<VTable *>(r.self)->table(&method_name);
1.88 parser 660: if(const Array *source_columns=source_table.columns()) {
1.98 parser 661: Array_iter i(*source_columns);
662: while(i.has_next()) {
1.88 parser 663: Array& result_row=*new(pool) Array(pool);
1.98 parser 664: result_row+=i.next();
1.88 parser 665: result_table+=&result_row;
666: }
667: }
668:
1.151 paf 669: r.write_no_lang(*new(pool) VTable(pool, &result_table));
1.88 parser 670: }
671:
1.148 paf 672: static void _select(Request& r, const String& method_name, MethodParams *params) {
673: Pool& pool=r.pool();
674:
675: Value& vcondition=params->as_junction(0, "condition must be expression");
676:
1.159 paf 677: Table& source_table=static_cast<VTable *>(r.self)->table(&method_name);
1.148 paf 678: Table& result_table=*new(pool) Table(pool,
679: source_table.origin_string(),
680: source_table.columns()
681: );
682:
683: int saved_current=source_table.current();
684: int size=source_table.size();
685: for(int row=0; row<size; row++) {
686: source_table.set_current(row);
687:
1.150 paf 688: bool condition=r.process_to_value(vcondition,
1.149 paf 689: /*0/*no name* /,*/
1.148 paf 690: false/*don't intercept string*/).as_bool();
691:
692: if(condition) // ...condition is true=
693: result_table+=&source_table.at(row); // =green light to go to result
694: }
695: source_table.set_current(saved_current);
696:
1.151 paf 697: r.write_no_lang(*new(pool) VTable(pool, &result_table));
1.148 paf 698: }
699:
1.66 paf 700: // constructor
701:
1.151 paf 702: MTable::MTable(Pool& apool) : Methoded(apool, "table") {
1.142 paf 703: // ^table::create{data}
704: // ^table::create[nameless]{data}
705: // ^table::create[table]
706: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 2);
707: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
708: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 2);
1.2 paf 709:
1.142 paf 710: // ^table::load[file]
711: // ^table::load[nameless;file]
1.66 paf 712: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 2);
1.22 paf 713:
714: // ^table.save[file]
715: // ^table.save[nameless;file]
1.66 paf 716: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
1.6 paf 717:
718: // ^table.count[]
1.66 paf 719: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 720:
721: // ^table.line[]
1.66 paf 722: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 723:
1.10 paf 724: // ^table.offset[]
1.133 paf 725: // ^table.offset(offset)
726: // ^table.offset[cur|set](offset)
727: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 728:
1.10 paf 729: // ^table.menu{code}
730: // ^table.menu{code}[delim]
1.66 paf 731: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 732:
1.79 paf 733: // ^table:hash[key field name]
1.123 parser 734: // ^table:hash[key field name][value field name(s) string/table]
735: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 2);
1.32 paf 736:
1.102 parser 737: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
738: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 739: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 740:
1.36 paf 741: // ^table.locate[field;value]
1.145 paf 742: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 2);
1.39 paf 743:
744: // ^table.flip[]
1.66 paf 745: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 746:
747: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 748: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 749:
1.157 paf 750: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
751: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 752:
753:
1.100 parser 754: // ^table:sql[query]
755: // ^table:sql[query][$.limit(1) $.offset(2)]
756: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 757:
758: // ^table:columns[]
759: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 0);
1.148 paf 760:
761: // ^table.select(expression) = table
762: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.66 paf 763: }
764:
765: // global variable
766:
767: Methoded *table_class;
768:
769: // creator
770:
771: Methoded *MTable_create(Pool& pool) {
772: return table_class=new(pool) MTable(pool);
1.40 paf 773: }
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