Annotation of parser3/src/classes/table.C, revision 1.172.2.14.2.16
1.20 paf 1: /** @file
1.47 paf 2: Parser: @b table parser class.
1.20 paf 3:
1.172.2.2 paf 4: Copyright (c) 2001-2003 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:
1.172.2.14.2. 6(paf 8:3): static const char* IDENT_TABLE_C="$Date: 2003/03/24 13:43:40 $";
1.1 paf 9:
1.105 parser 10: #include "classes.h"
1.172.2.4 paf 11: #include "pa_vmethod_frame.h"
12:
1.16 paf 13: #include "pa_common.h"
1.1 paf 14: #include "pa_request.h"
15: #include "pa_vtable.h"
1.6 paf 16: #include "pa_vint.h"
1.51 paf 17: #include "pa_sql_connection.h"
1.72 paf 18: #include "pa_vbool.h"
1.1 paf 19:
1.66 paf 20: // class
21:
1.172.2.9 paf 22: class MTable: public Methoded {
1.66 paf 23: public: // VStateless_class
1.172.2.14.2. (paf 24:): Value* create_new_value() { return new VTable(); }
1.66 paf 25:
26: public:
1.172.2.6 paf 27: MTable();
1.70 paf 28:
29: public: // Methoded
1.66 paf 30: bool used_directly() { return true; }
31: };
1.1 paf 32:
1.172.2.6 paf 33: // global variable
34:
1.172.2.11 paf 35: DECLARE_CLASS_VAR(table, new MTable, 0);
1.172.2.7 paf 36:
37: // defines for globals
38:
39: #define SQL_LIMIT_NAME "limit"
40: #define SQL_OFFSET_NAME "offset"
41: #define SQL_DEFAULT_NAME "default"
42: #define SQL_DISTINCT_NAME "distinct"
43:
44: // globals
45:
1.172.2.14.2. 4(paf 46:3): String sql_limit_name(SQL_LIMIT_NAME);
47:3): String sql_offset_name(SQL_OFFSET_NAME);
48:3): String sql_default_name(SQL_DEFAULT_NAME);
49:3): String sql_distinct_name(SQL_DISTINCT_NAME);
1.172.2.6 paf 50:
1.1 paf 51: // methods
1.66 paf 52:
1.172.2.14.2. (paf 53:): static void get_copy_options(Request& r, MethodParams* params, int param_index,
1.157 paf 54: const Table& source,
55: int& offset,
56: int& limit) {
1.172.2.6 paf 57:
1.157 paf 58: offset=0;
59: limit=0;
1.172.2.10 paf 60: if(params->count()<=param_index)
1.157 paf 61: return;
62:
1.172.2.14.2. 3(paf 63:3): Value& voptions=params->as_no_junction(param_index, "options must be hash, not code");
64:3): if(!voptions.is_string()) {
65:3): if(HashStringValue* options=voptions.get_hash()) {
1.164 paf 66: int valid_options=0;
1.172.2.14.2. (paf 67:): if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 68: valid_options++;
1.157 paf 69: if(voffset->is_string()) {
1.172.2.14.2. 3(paf 70:3): const String& soffset=*voffset->get_string();
71:3): if(soffset == "cur")
1.157 paf 72: offset=source.current();
73: else
74: throw Exception("parser.runtime",
1.172.2.14.2. 0(paf 75:3): &soffset,
1.157 paf 76: "must be 'cur' string or expression");
77: } else
1.172.2.14.2. 1(paf 78:3): offset=r.process_to_value(*voffset).as_int();
1.164 paf 79: }
1.172.2.14.2. (paf 80:): if(Value* vlimit=options->get(sql_limit_name)) {
1.164 paf 81: valid_options++;
1.172.2.14.2. 3(paf 82:3): limit=r.process_to_value(*vlimit).as_int();
1.172.2.12 paf 83: if(!limit) // zero limit = should be 'nothing to copy', for methods zero means 'all'
84: limit=-1; // thus fixing
1.164 paf 85: }
1.172.2.6 paf 86: if(valid_options!=options->count())
1.164 paf 87: throw Exception("parser.runtime",
1.172.2.14.2. (paf 88:): 0,
1.164 paf 89: "called with invalid option");
1.157 paf 90: } else
91: throw Exception("parser.runtime",
1.172.2.14.2. (paf 92:): 0,
1.157 paf 93: "options must be hash");
1.158 paf 94: }
1.157 paf 95: }
96:
1.172.2.14.2. (paf 97:): static void _create(Request& r, MethodParams* params) {
1.157 paf 98: // clone/copy part?
1.172.2.14.2. 3(paf 99:3): if(Table *source=(*params)[0]->get_table()) {
1.157 paf 100: int offset, limit;
1.172.2.14.2. 3(paf 101:3): get_copy_options(r, params, 1, *source,
1.157 paf 102: offset, limit);
1.172.2.14.2. 3(paf 103:3): GET_SELF(r, VTable).set_table(*new Table(*source, offset, limit));
1.157 paf 104: return;
105: }
1.142 paf 106:
1.1 paf 107: // data is last parameter
1.172.2.14.2. (paf 108:): Temp_lang temp_lang(r, String::L_PASS_APPENDED);
109:): const String& data=
1.172.2.10 paf 110: r.process_to_string(params->as_junction(params->count()-1, "body must be code"));
1.44 paf 111:
112: // parse columns
1.172.2.6 paf 113: Table::columns_type columns;
1.172.2.10 paf 114: if(params->count()==2) {
1.172.2.6 paf 115: columns=Table::columns_type(0); // nameless
1.21 paf 116: } else {
1.172.2.6 paf 117: columns=Table::columns_type(new ArrayString);
1.44 paf 118:
1.172.2.6 paf 119: ArrayString head;
1.172.2.14.2. 3(paf 120:3): size_t pos_after=0;
121:3): data.split(head, pos_after, "\n", String::L_AS_IS, 1);
122:3): if(head.count()) {
123:3): size_t pos_after=0;
124:3): head[0]->split(*columns, pos_after, "\t", String::L_AS_IS);
125:3): }
1.44 paf 126: }
127:
1.172.2.14.2. 3(paf 128:3): Table& table=*new Table(columns);
1.44 paf 129: // parse cells
1.172.2.6 paf 130:
131: ArrayString rows;
1.172.2.14.2. 3(paf 132:3): size_t pos_after=0;
133:3): data.split(rows, pos_after, "\n", String::L_AS_IS);
134:3): Array_iterator<const String*> i(rows);
1.98 parser 135: while(i.has_next()) {
1.172.2.6 paf 136: Table::element_type row(new ArrayString);
1.172.2.14.2. 3(paf 137:3): const String& string=*i.next();
1.118 parser 138: // remove comment lines
1.172.2.14.2. 3(paf 139:3): if(!string.length())
1.44 paf 140: continue;
141:
1.172.2.14.2. 3(paf 142:3): size_t pos_after=0;
143:3): string.split(*row, pos_after, "\t", String::L_AS_IS);
144:3): table+=row;
1.17 paf 145: }
1.1 paf 146:
1.44 paf 147: // replace any previous table value
1.172.2.6 paf 148: GET_SELF(r, VTable).set_table(table);
1.44 paf 149: }
150:
1.172.2.14.2. (paf 151:): static void _load(Request& r, MethodParams* params) {
152:): const String& first_param=params->as_string(0, "file name must be string");
1.168 paf 153: int filename_param_index=0;
1.172.2.14.2. 3(paf 154:3): bool nameless=first_param=="nameless";
1.168 paf 155: if(nameless)
156: filename_param_index++;
157: int options_param_index=filename_param_index+1;
158:
1.44 paf 159: // loading text
1.172.2.14.2. (paf 160:): char *data=file_read_text(r.charsets.source(),
1.172.2.10 paf 161: r.absolute(params->as_string(filename_param_index, "file name must be string")),
1.168 paf 162: true,
1.172.2.14.2. 3(paf 163:3): options_param_index<params->count()?params->as_no_junction(options_param_index, "additional params must be hash").get_hash():0
1.168 paf 164: );
1.44 paf 165:
1.1 paf 166: // parse columns
1.172.2.6 paf 167: Table::columns_type columns;
1.168 paf 168: if(nameless) {
1.172.2.6 paf 169: columns=Table::columns_type(0); // nameless
1.1 paf 170: } else {
1.172.2.6 paf 171: columns=Table::columns_type(new ArrayString);
1.1 paf 172:
1.139 paf 173: while(char *row_chars=getrow(&data)) {
174: // remove empty&comment lines
175: if(!*row_chars || *row_chars == '#')
176: continue;
1.1 paf 177: do {
1.172.2.14.2. 3(paf 178:3): *columns+=new String(lsplit(&row_chars, '\t'), 0, true);
1.1 paf 179: } while(row_chars);
1.139 paf 180:
181: break;
182: }
1.1 paf 183: }
184:
185: // parse cells
1.172.2.14.2. (paf 186:): Table& table=*new Table(columns);
1.1 paf 187: char *row_chars;
188: while(row_chars=getrow(&data)) {
1.118 parser 189: // remove empty&comment lines
190: if(!*row_chars || *row_chars == '#')
1.28 paf 191: continue;
1.172.2.6 paf 192: Table::element_type row(new ArrayString);
1.1 paf 193: while(char *cell_chars=lsplit(&row_chars, '\t')) {
1.172.2.14.2. (paf 194:): *row+=new String(cell_chars, 0, true);
1.1 paf 195: }
1.172.2.14.2. (paf 196:): table+=row;
1.1 paf 197: };
198:
199: // replace any previous table value
1.172.2.6 paf 200: GET_SELF(r, VTable).set_table(table);
1.1 paf 201: }
1.2 paf 202:
1.146 paf 203: /// @todo "x\nx" "xxx""xx"
1.172.2.14.2. (paf 204:): static void _save(Request& r, MethodParams* params) {
205:): Value& vfile_name=params->as_no_junction(params->count()-1, "file name must not be code");
1.22 paf 206:
1.172.2.14.2. (paf 207:): Table& table=GET_SELF(r, VTable).table();
1.31 paf 208:
1.129 paf 209: bool do_append=false;
1.172.2.6 paf 210: String sdata;
1.172.2.10 paf 211: if(params->count()==1) { // named output
1.31 paf 212: // write out names line
213: if(table.columns()) { // named table
1.172.2.14.2. 3(paf 214:3): Array_iterator<const String*> i(*table.columns());
1.98 parser 215: while(i.has_next()) {
1.172.2.14.2. (paf 216:): sdata.append(*i.next(), String::L_TABLE);
1.98 parser 217: if(i.has_next())
1.172.2.14.2. 3(paf 218:3): sdata.append("\t", 1, String::L_CLEAN);
1.31 paf 219: }
220: } else { // nameless table
1.172.2.6 paf 221: if(int lsize=table.count()?table[0]->count():0)
1.31 paf 222: for(int column=0; column<lsize; column++) {
1.172.2.14.2. 5(paf 223:3): char *cindex_tab=new(PointerFreeGC) char[MAX_NUMBER];
(paf 224:): sdata.append(cindex_tab,
225:): snprintf(cindex_tab, MAX_NUMBER, "%d\t", column),
226:): String::L_CLEAN);
1.31 paf 227: }
228: else
1.172.2.14.2. 3(paf 229:3): sdata.append("empty nameless table", 0, String::L_CLEAN);
1.31 paf 230: }
1.172.2.14.2. 3(paf 231:3): sdata.append("\n", 1, String::L_CLEAN);
1.129 paf 232: } else { // mode specified
1.172.2.14.2. (paf 233:): const String& mode=params->as_string(0, "mode must be string");
3(paf 234:3): if(mode=="append")
1.129 paf 235: do_append=true;
1.172.2.14.2. 3(paf 236:3): else if(mode=="nameless")
1.129 paf 237: /*ok, already skipped names output*/;
238: else
1.146 paf 239: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 240:3): &mode,
1.129 paf 241: "unknown mode, must be 'append'");
242:
1.31 paf 243: }
244: // data lines
1.172.2.14.2. (paf 245:): Array_iterator<ArrayString*> i(table);
1.98 parser 246: while(i.has_next()) {
1.172.2.14.2. 3(paf 247:3): Array_iterator<const String*> c(*i.next());
1.98 parser 248: while(c.has_next()) {
1.172.2.14.2. (paf 249:): if(const String* s=c.next())
250:): sdata.append(*s, String::L_TABLE);
1.98 parser 251: if(c.has_next())
1.172.2.14.2. (paf 252:): sdata.append("\t", 1, String::L_CLEAN);
1.31 paf 253: }
1.172.2.14.2. (paf 254:): sdata.append("\n", 1, String::L_CLEAN);
1.31 paf 255: }
256:
257: // write
1.172.2.14.2. (paf 258:): file_write(r.absolute(vfile_name.as_string()),
259:): sdata.cstr(), sdata.length(), true, do_append);
1.22 paf 260: }
261:
1.172.2.14.2. (paf 262:): static void _count(Request& r, MethodParams* ) {
263:): int result=GET_SELF(r, VTable).table().count();
3(paf 264:3): r.write_no_lang(*new VInt(result));
1.6 paf 265: }
266:
1.172.2.14.2. (paf 267:): static void _line(Request& r, MethodParams* ) {
268:): int result=1+GET_SELF(r, VTable).table().current();
3(paf 269:3): r.write_no_lang(*new VInt(result));
1.6 paf 270: }
271:
1.172.2.14.2. (paf 272:): static void _offset(Request& r, MethodParams* params) {
273:): Table& table=GET_SELF(r, VTable).table();
1.172.2.10 paf 274: if(params->count()) {
1.133 paf 275: bool absolute=false;
1.172.2.10 paf 276: if(params->count()>1) {
1.172.2.14.2. (paf 277:): const String& whence=params->as_string(0, "whence must be string");
3(paf 278:3): if(whence=="cur")
1.134 paf 279: absolute=false;
1.172.2.14.2. 3(paf 280:3): else if(whence=="set")
1.134 paf 281: absolute=true;
1.133 paf 282: else
1.146 paf 283: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 284:3): &whence,
1.134 paf 285: "is invalid whence, valid are 'cur' or 'set'");
1.157 paf 286: }
1.133 paf 287:
1.172.2.14.2. 1(paf 288:3): Value& offset_expr=params->as_junction(params->count()-1, "offset must be expression");
0(paf 289:3): table.offset(absolute, r.process_to_value(offset_expr).as_int());
1.151 paf 290: } else
1.172.2.14.2. 0(paf 291:3): r.write_no_lang(*new VInt(table.current()));
1.6 paf 292: }
293:
1.172.2.14.2. (paf 294:): static void _menu(Request& r, MethodParams* params) {
3(paf 295:3): Value& body_code=params->as_junction(0, "body must be code");
1.7 paf 296:
1.172.2.14.2. (paf 297:): Value* delim_maybe_code=params->count()>1?(*params)[1]:0;
1.7 paf 298:
1.172.2.14.2. (paf 299:): Table& table=GET_SELF(r, VTable).table();
1.7 paf 300: bool need_delim=false;
1.99 parser 301: int saved_current=table.current();
1.172.2.6 paf 302: int size=table.count();
1.99 parser 303: for(int row=0; row<size; row++) {
1.22 paf 304: table.set_current(row);
1.7 paf 305:
1.161 paf 306: StringOrValue sv_processed=r.process(body_code);
1.172.2.14.2. 3(paf 307:3): const String* s_processed=sv_processed.get_string();
(paf 308:): if(delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body
1.161 paf 309: if(need_delim) // need delim & iteration produced string?
1.172.2.14.2. 3(paf 310:3): r.write_pass_lang(r.process(*delim_maybe_code));
1.7 paf 311: need_delim=true;
312: }
1.161 paf 313: r.write_pass_lang(sv_processed);
1.7 paf 314: }
1.99 parser 315: table.set_current(saved_current);
1.7 paf 316: }
317:
1.110 parser 318: #ifndef DOXYGEN
1.74 paf 319: struct Row_info {
1.166 paf 320: Request *r;
1.74 paf 321: Table *table;
1.172.2.14.2. (paf 322:): Value* key_code;
1.74 paf 323: int key_field;
1.172.2.6 paf 324: Array<int>* value_fields;
325: HashStringValue* hash;
1.163 paf 326: bool distinct;
1.167 paf 327: int row;
1.74 paf 328: };
1.110 parser 329: #endif
1.172.2.6 paf 330: static void table_row_to_hash(Table::element_type row, Row_info *info) {
1.172.2.14.2. 3(paf 331:3): const String* key;
1.172.2.6 paf 332: if(info->key_code) {
333: info->table->set_current(info->row++); // change context row
1.172.2.14.2. 3(paf 334:3): StringOrValue sv_processed=info->r->process(*info->key_code);
335:3): key=&sv_processed.as_string();
1.166 paf 336: } else
1.172.2.14.2. (paf 337:): key=info->key_field<row->count()?row->get(info->key_field):0;
1.166 paf 338:
339: if(!key)
340: return; // ignore rows without key [too-short-record_array if-indexed]
1.74 paf 341:
1.172.2.14.2. (paf 342:): VHash* vhash=new VHash;
1.172.2.6 paf 343: HashStringValue& hash=vhash->hash();
344: for(int i=0; i<info->value_fields->count(); i++) {
345: int value_field=info->value_fields->get(i);
346: if(value_field<row->count())
1.166 paf 347: hash.put(
1.172.2.14.2. 3(paf 348:3): *info->table->columns()->get(value_field),
349:3): new VString(*row->get(value_field)));
1.74 paf 350: }
1.166 paf 351:
1.172.2.14.2. 3(paf 352:3): if(info->hash->put_dont_replace(*key, vhash)) // put. existed?
1.172.2.6 paf 353: if(!info->distinct)
1.166 paf 354: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 355:3): key,
1.166 paf 356: "duplicate key");
1.74 paf 357: }
1.172.2.14.2. (paf 358:): static void _hash(Request& r, MethodParams* params) {
359:): Table& self_table=GET_SELF(r, VTable).table();
3(paf 360:3): VHash& result=*new VHash;
1.172.2.6 paf 361: if(Table::columns_type columns=self_table.columns())
362: if(columns->count()>0) {
1.163 paf 363: bool distinct=false;
1.172.2.10 paf 364: int param_index=params->count()-1;
1.166 paf 365: if(param_index>0) {
1.172.2.6 paf 366: if(HashStringValue* options=
1.172.2.14.2. 3(paf 367:3): params->as_no_junction(param_index, "param must not be code").get_hash()) {
1.166 paf 368: --param_index;
369: int valid_options=0;
1.172.2.14.2. (paf 370:): if(Value* vdistinct=options->get(sql_distinct_name)) {
1.166 paf 371: valid_options++;
1.172.2.14.2. 3(paf 372:3): distinct=r.process_to_value(*vdistinct).as_bool();
1.166 paf 373: }
1.172.2.6 paf 374: if(valid_options!=options->count())
1.166 paf 375: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 376:3): 0,
1.166 paf 377: "called with invalid option");
1.163 paf 378: }
379: }
380: if(param_index==2) // bad options param type
381: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 382:3): 0,
1.163 paf 383: "options must be hash");
384:
1.172.2.6 paf 385: Array<int> value_fields;
1.163 paf 386: if(param_index>0) {
1.172.2.14.2. 3(paf 387:3): Value& value_fields_param=params->as_no_junction(param_index, "value field(s) must not be code");
388:3): if(value_fields_param.is_string()) {
1.172.2.6 paf 389: value_fields+=self_table.column_name2index(
1.172.2.14.2. 3(paf 390:3): *value_fields_param.get_string(), true);
391:3): } else if(Table* value_fields_table=value_fields_param.get_table()) {
1.172.2.6 paf 392: for(int i=0; i<value_fields_table->count(); i++) {
1.172.2.14.2. (paf 393:): const String& value_field_name=
3(paf 394:3): *value_fields_table->get(i)->get(0);
1.123 parser 395: value_fields+=self_table.column_name2index(value_field_name, true);
396: }
397: } else
1.146 paf 398: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 399:3): 0,
1.123 parser 400: "value field(s) must be string or self_table"
401: );
402: } else { // by all columns, including key
1.172.2.6 paf 403: for(int i=0; i<columns->count(); i++)
1.123 parser 404: value_fields+=i;
1.74 paf 405: }
406:
1.172.2.6 paf 407:
408: {
409: Row_info info;
410: info.r=&r;
411: info.table=&self_table;
1.172.2.14.2. (paf 412:): Value* key_param=(*params)[0];
413:): info.key_code=key_param->get_junction()?key_param:0;
1.172.2.6 paf 414: info.key_field=info.key_code?-1
1.172.2.14.2. (paf 415:): :self_table.column_name2index(key_param->as_string(), true);
1.172.2.6 paf 416: info.value_fields=&value_fields;
1.172.2.14.2. 2(paf 417:3): info.hash=&result.hash();
1.172.2.6 paf 418: info.distinct=distinct;
1.172.2.12 paf 419: info.row=0;
1.172.2.6 paf 420:
421: int saved_current=self_table.current();
422: self_table.for_each(table_row_to_hash, &info);
423: self_table.set_current(saved_current);
424: }
1.74 paf 425: }
1.97 parser 426: r.write_no_lang(result);
1.74 paf 427: }
428:
1.110 parser 429: #ifndef DOXYGEN
1.78 paf 430: struct Table_seq_item {
1.172.2.13 paf 431: ArrayString* row;
1.34 paf 432: union {
1.172.2.14.2. 3(paf 433:3): const char *c_str;
1.34 paf 434: double d;
435: } value;
1.32 paf 436: };
1.110 parser 437: #endif
1.34 paf 438: static int sort_cmp_string(const void *a, const void *b) {
439: return strcmp(
1.78 paf 440: static_cast<const Table_seq_item *>(a)->value.c_str,
441: static_cast<const Table_seq_item *>(b)->value.c_str
1.34 paf 442: );
443: }
444: static int sort_cmp_double(const void *a, const void *b) {
1.78 paf 445: double va=static_cast<const Table_seq_item *>(a)->value.d;
446: double vb=static_cast<const Table_seq_item *>(b)->value.d;
1.34 paf 447: if(va<vb)
448: return -1;
449: else if(va>vb)
450: return +1;
451: else
452: return 0;
453: }
1.172.2.14.2. (paf 454:): static void _sort(Request& r, MethodParams* params) {
455:): Value& key_maker=params->as_junction(0, "key-maker must be code");
1.61 paf 456:
1.172.2.10 paf 457: bool reverse=params->count()>1/*..[desc|asc|]*/?
1.172.2.14.2. 3(paf 458:3): reverse=params->as_no_junction(1, "order must not be code").as_string()=="desc":
1.104 parser 459: false; // default=asc
1.32 paf 460:
1.172.2.14.2. (paf 461:): Table& old_table=GET_SELF(r, VTable).table();
3(paf 462:3): Table& new_table=*new Table(old_table.columns());
1.34 paf 463:
1.172.2.14.2. 6(paf 464:3): Table_seq_item* seq=new(PointerFreeGC) Table_seq_item[old_table.count()];
1.34 paf 465: int i;
466:
467: // calculate key values
468: bool key_values_are_strings=true;
1.172.2.6 paf 469: for(i=0; i<old_table.count(); i++) {
1.101 parser 470: old_table.set_current(i);
1.32 paf 471: // calculate key value
1.172.2.14.2. (paf 472:): seq[i].row=old_table[i];
3(paf 473:3): Value* value=r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/);
1.34 paf 474: if(i==0) // determining key values type by first one
1.172.2.6 paf 475: key_values_are_strings=value->is_string();
1.34 paf 476:
477: if(key_values_are_strings)
1.172.2.14.2. 3(paf 478:3): seq[i].value.c_str=value->as_string().cstr();
1.34 paf 479: else
1.172.2.6 paf 480: seq[i].value.d=value->as_double();
1.32 paf 481: }
482: // sort keys
1.172.2.6 paf 483: _qsort(seq, old_table.count(), sizeof(Table_seq_item),
1.34 paf 484: key_values_are_strings?sort_cmp_string:sort_cmp_double);
1.32 paf 485:
1.34 paf 486: // reorder table as they require in 'seq'
1.172.2.6 paf 487: for(i=0; i<old_table.count(); i++)
1.172.2.14.2. 3(paf 488:3): new_table+=Table::element_type(seq[reverse?old_table.count()-1-i:i].row);
6(paf 489:3):
490:3): delete[] seq;
1.32 paf 491:
1.116 parser 492: // replace any previous table value
1.172.2.6 paf 493: GET_SELF(r, VTable).set_table(new_table);
1.32 paf 494: }
495:
1.172.2.14.2. (paf 496:): static bool _locate_expression(Request& r, MethodParams* params) {
1.172.2.10 paf 497: if(params->count()>1)
1.146 paf 498: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 499:3): 0,
1.145 paf 500: "locate by expression has only one parameter - expression");
501:
1.172.2.14.2. 3(paf 502:3): Value& expression_code=params->as_junction(0, "must be expression");
1.145 paf 503:
1.172.2.14.2. (paf 504:): Table& table=GET_SELF(r, VTable).table();
1.145 paf 505: int saved_current=table.current();
1.172.2.6 paf 506: int size=table.count();
1.145 paf 507: for(int row=0; row<size; row++) {
508: table.set_current(row);
509:
1.172.2.14.2. 3(paf 510:3): if(r.process_to_value(expression_code).as_bool())
1.145 paf 511: return true;
512: }
513: table.set_current(saved_current);
514: return false;
515: }
1.172.2.14.2. (paf 516:): static bool _locate_name_value(Request& r, MethodParams* params) {
1.172.2.10 paf 517: if(params->count()>2)
1.146 paf 518: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 519:3): 0,
1.145 paf 520: "locate by name and value has only two parameters - name and value");
1.72 paf 521:
1.172.2.14.2. (paf 522:): Table& table=GET_SELF(r, VTable).table();
1.145 paf 523: return table.locate(
1.172.2.10 paf 524: params->as_string(0, "column name must be string"),
525: params->as_string(1, "value must be string")
1.145 paf 526: );
527: }
1.172.2.14.2. (paf 528:): static void _locate(Request& r, MethodParams* params) {
1.172.2.10 paf 529: bool result=(*params)[0]->get_junction()?
1.172.2.14.2. 3(paf 530:3): _locate_expression(r, params) :
531:3): _locate_name_value(r, params);
532:3): r.write_no_lang(*new VBool(result));
1.37 paf 533: }
534:
1.172.2.14.2. (paf 535:): static void _flip(Request& r, MethodParams* params) {
536:): Table& old_table=GET_SELF(r, VTable).table();
3(paf 537:3): Table& new_table=*new Table(old_table.columns());
1.172.2.6 paf 538: if(old_table.count())
539: if(int old_cols=old_table[0]->count())
1.39 paf 540: for(int column=0; column<old_cols; column++) {
1.172.2.6 paf 541: Table::element_type new_row(new ArrayString(old_table.count()));
542: for(int i=0; i<old_table.count(); i++) {
543: Table::element_type old_row=old_table[i];
1.172.2.14.2. 3(paf 544:3): *new_row+=column<old_row->count()?old_row->get(column):new String;
1.39 paf 545: }
1.172.2.14.2. 3(paf 546:3): new_table+=new_row;
1.39 paf 547: }
548:
1.172.2.14.2. 3(paf 549:3): r.write_no_lang(*new VTable(&new_table));
1.39 paf 550: }
551:
1.172.2.14.2. (paf 552:): static void _append(Request& r, MethodParams* params) {
1.134 paf 553: // data
1.172.2.14.2. (paf 554:): Temp_lang temp_lang(r, String::L_PASS_APPENDED);
555:): const String& string=r.process_to_string(params->as_junction(0, "body must be code"));
1.41 paf 556:
557: // parse cells
1.172.2.14.2. 3(paf 558:3): Table::element_type row=new ArrayString;
559:3): size_t pos_after=0;
560:3): string.split(*row, pos_after, "\t", String::L_AS_IS);
1.41 paf 561:
1.172.2.14.2. (paf 562:): GET_SELF(r, VTable).table()+=row;
1.41 paf 563: }
564:
1.172.2.14.2. (paf 565:): static void _join(Request& r, MethodParams* params) {
3(paf 566:3): Table* maybe_src=params->as_no_junction(0, "table ref must not be code").get_table();
1.42 paf 567: if(!maybe_src)
1.146 paf 568: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 569:3): 0,
1.42 paf 570: "source is not a table");
571:
572: Table& src=*maybe_src;
1.172.2.14.2. (paf 573:): Table& dest=GET_SELF(r, VTable).table();
1.42 paf 574: if(&src == &dest)
1.146 paf 575: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 576:3): 0,
1.42 paf 577: "source and destination are same table");
578:
1.157 paf 579: int offset, limit;
1.172.2.14.2. 3(paf 580:3): get_copy_options(r, params, 1, src,
1.157 paf 581: offset, limit);
582:
1.172.2.6 paf 583: if(Table::columns_type dest_columns=dest.columns()) { // dest is named
1.42 paf 584: int saved_src_current=src.current();
1.172.2.6 paf 585: int m=src.count()-offset;
1.157 paf 586: if(!limit || limit>m)
587: limit=m;
588: int end=offset+limit;
589: for(int src_row=offset; src_row<end; src_row++) {
1.42 paf 590: src.set_current(src_row);
1.172.2.6 paf 591: Table::element_type dest_row(new ArrayString(src.count()));
592: for(int dest_column=0; dest_column<dest_columns->count(); dest_column++) {
1.172.2.14.2. 3(paf 593:3): const String* src_item=src.item(*dest_columns->get(dest_column));
594:3): *dest_row+=src_item?src_item:new String;
1.140 paf 595: }
1.172.2.6 paf 596: dest+=dest_row;
1.42 paf 597: }
598: src.set_current(saved_src_current);
599: } else { // dest is nameless
1.172.2.6 paf 600: for(int src_row=0; src_row<src.count(); src_row++)
601: dest+=src[src_row];
1.42 paf 602: }
603: }
604:
1.94 parser 605: #ifndef DOXYGEN
1.169 paf 606: class Table_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.172.2.14.2. (paf 607:): ArrayString& columns;
1.172.2.6 paf 608: ArrayString* row;
609: public:
1.172.2.14.2. (paf 610:): Table* table;
1.94 parser 611: public:
1.172.2.14.2. 3(paf 612:3): Table_sql_event_handlers() :
613:3): columns(*new ArrayString), row(0), table(0) {
1.172.2.14 paf 614: }
1.94 parser 615:
1.170 paf 616: bool add_column(SQL_Error& error, void *ptr, size_t size) {
617: try {
1.172.2.14.2. 3(paf 618:3): columns+=new String((const char* )ptr, size, true);
1.170 paf 619: return false;
620: } catch(...) {
621: error=SQL_Error("exception occured in Table_sql_event_handlers::add_column");
622: return true;
623: }
624: }
625: bool before_rows(SQL_Error& error) {
626: try {
1.172.2.14.2. 3(paf 627:3): table=new Table(&columns);
1.170 paf 628: return false;
629: } catch(...) {
630: error=SQL_Error("exception occured in Table_sql_event_handlers::before_rows");
631: return true;
632: }
633: }
634: bool add_row(SQL_Error& error) {
635: try {
1.172.2.14.2. 3(paf 636:3): *table+=row=new ArrayString;
1.170 paf 637: return false;
638: } catch(...) {
639: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row");
640: return true;
641: }
642: }
643: bool add_row_cell(SQL_Error& error, void *ptr, size_t size) {
644: try {
1.172.2.14.2. 3(paf 645:3): String& cell=*new String;
1.170 paf 646: if(size)
1.172.2.14.2. 3(paf 647:3): cell.append((const char* )ptr, size, String::L_TAINTED);
648:3): *row+=&cell;
1.170 paf 649: return false;
650: } catch(...) {
651: error=SQL_Error("exception occured in Table_sql_event_handlers::add_row_cell");
652: return true;
653: }
1.94 parser 654: }
655: };
656: #endif
1.172.2.14.2. (paf 657:): static void _sql(Request& r, MethodParams* params) {
3(paf 658:3): Value& statement=params->as_junction(0, "statement must be code");
1.49 paf 659:
1.53 paf 660: ulong limit=0;
1.100 parser 661: ulong offset=0;
1.172.2.10 paf 662: if(params->count()>1) {
1.172.2.14.2. 3(paf 663:3): Value& voptions=params->as_no_junction(1, "options must be hash, not code");
664:3): if(!voptions.is_string())
665:3): if(HashStringValue* options=voptions.get_hash()) {
1.164 paf 666: int valid_options=0;
1.172.2.14.2. (paf 667:): if(Value* vlimit=options->get(sql_limit_name)) {
1.164 paf 668: valid_options++;
1.172.2.14.2. 3(paf 669:3): limit=(ulong)r.process_to_value(*vlimit).as_double();
1.164 paf 670: }
1.172.2.14.2. (paf 671:): if(Value* voffset=options->get(sql_offset_name)) {
1.164 paf 672: valid_options++;
1.172.2.14.2. 3(paf 673:3): offset=(ulong)r.process_to_value(*voffset).as_double();
1.164 paf 674: }
1.172.2.6 paf 675: if(valid_options!=options->count())
1.164 paf 676: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 677:3): 0,
1.164 paf 678: "called with invalid option");
1.109 parser 679: } else
1.146 paf 680: throw Exception("parser.runtime",
1.172.2.14.2. 3(paf 681:3): 0,
1.109 parser 682: "options must be hash");
1.49 paf 683: }
684:
1.172.2.14.2. (paf 685:): Temp_lang temp_lang(r, String::L_SQL);
686:): const String& statement_string=r.process_to_string(statement);
1.172.2.2 paf 687: const char* statement_cstr=
1.172.2.14.2. 3(paf 688:3): statement_string.cstr(String::L_UNSPECIFIED, r.connection());
689:3): Table_sql_event_handlers handlers;
1.135 paf 690: #ifdef RESOURCES_DEBUG
691: struct timeval mt[2];
692: //measure:before
693: gettimeofday(&mt[0],NULL);
694: #endif
1.172.2.14.2. (paf 695:): r.connection()->query(
1.160 paf 696: statement_cstr, offset, limit,
697: handlers,
698: statement_string);
1.135 paf 699:
700: #ifdef RESOURCES_DEBUG
701: //measure:after connect
702: gettimeofday(&mt[1],NULL);
703:
704: double t[2];
705: for(int i=0;i<2;i++)
706: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
707:
708: r.sql_request_time+=t[1]-t[0];
709: #endif
1.96 parser 710:
1.172.2.14.2. 3(paf 711:3): Table& result=
712:3): handlers.table?*handlers.table: // query resulted in table? return it
713:3): *new Table(Table::columns_type(0)); // query returned no table, fake it
1.49 paf 714:
715: // replace any previous table value
1.172.2.6 paf 716: GET_SELF(r, VTable).set_table(result);
1.49 paf 717: }
718:
1.172.2.14.2. (paf 719:): static void _columns(Request& r, MethodParams* ) {
1.88 parser 720:
1.172.2.6 paf 721: Table::columns_type result_columns(new ArrayString);
1.172.2.14.2. 3(paf 722:3): *result_columns+=new String("column");
723:3): Table& result_table=*new Table(result_columns);
1.172.2.6 paf 724:
1.172.2.14.2. (paf 725:): Table& source_table=GET_SELF(r, VTable).table();
1.172.2.6 paf 726: if(Table::columns_type source_columns=source_table.columns()) {
1.172.2.14.2. 3(paf 727:3): Array_iterator<const String*> i(*source_columns);
1.98 parser 728: while(i.has_next()) {
1.172.2.6 paf 729: Table::element_type result_row(new ArrayString);
730: *result_row+=i.next();
1.172.2.14.2. 3(paf 731:3): result_table+=result_row;
1.88 parser 732: }
733: }
734:
1.172.2.14.2. 3(paf 735:3): r.write_no_lang(*new VTable(&result_table));
1.88 parser 736: }
737:
1.172.2.14.2. (paf 738:): static void _select(Request& r, MethodParams* params) {
3(paf 739:3): Value& vcondition=params->as_junction(0, "condition must be expression");
1.148 paf 740:
1.172.2.14.2. (paf 741:): Table& source_table=GET_SELF(r, VTable).table();
3(paf 742:3): Table& result_table=*new Table(source_table.columns());
1.148 paf 743:
744: int saved_current=source_table.current();
1.172.2.6 paf 745: int size=source_table.count();
1.148 paf 746: for(int row=0; row<size; row++) {
747: source_table.set_current(row);
748:
1.150 paf 749: bool condition=r.process_to_value(vcondition,
1.149 paf 750: /*0/*no name* /,*/
1.172.2.14.2. 3(paf 751:3): false/*don't intercept string*/).as_bool();
1.148 paf 752:
753: if(condition) // ...condition is true=
1.172.2.14.2. 3(paf 754:3): result_table+=source_table[row]; // =green light to go to result
1.148 paf 755: }
756: source_table.set_current(saved_current);
757:
1.172.2.14.2. 3(paf 758:3): r.write_no_lang(*new VTable(&result_table));
1.148 paf 759: }
760:
1.66 paf 761: // constructor
762:
1.172.2.6 paf 763: MTable::MTable(): Methoded("table") {
1.142 paf 764: // ^table::create{data}
765: // ^table::create[nameless]{data}
766: // ^table::create[table]
767: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 2);
768: // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf
769: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 2);
1.2 paf 770:
1.142 paf 771: // ^table::load[file]
772: // ^table::load[nameless;file]
1.168 paf 773: add_native_method("load", Method::CT_DYNAMIC, _load, 1, 3);
1.22 paf 774:
775: // ^table.save[file]
776: // ^table.save[nameless;file]
1.66 paf 777: add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2);
1.6 paf 778:
779: // ^table.count[]
1.66 paf 780: add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0);
1.6 paf 781:
782: // ^table.line[]
1.66 paf 783: add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0);
1.6 paf 784:
1.10 paf 785: // ^table.offset[]
1.133 paf 786: // ^table.offset(offset)
787: // ^table.offset[cur|set](offset)
788: add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2);
1.7 paf 789:
1.10 paf 790: // ^table.menu{code}
791: // ^table.menu{code}[delim]
1.66 paf 792: add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2);
1.74 paf 793:
1.79 paf 794: // ^table:hash[key field name]
1.123 parser 795: // ^table:hash[key field name][value field name(s) string/table]
1.163 paf 796: add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3);
1.32 paf 797:
1.102 parser 798: // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc]
799: // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc]
1.66 paf 800: add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2);
1.8 paf 801:
1.36 paf 802: // ^table.locate[field;value]
1.145 paf 803: add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 2);
1.39 paf 804:
805: // ^table.flip[]
1.66 paf 806: add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0);
1.41 paf 807:
808: // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d}
1.66 paf 809: add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1);
1.42 paf 810:
1.157 paf 811: // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ]
812: add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2);
1.49 paf 813:
814:
1.100 parser 815: // ^table:sql[query]
816: // ^table:sql[query][$.limit(1) $.offset(2)]
817: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.88 parser 818:
819: // ^table:columns[]
820: add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 0);
1.148 paf 821:
822: // ^table.select(expression) = table
823: add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1);
1.40 paf 824: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to table.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / classes