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| version 1.6, 2001/03/12 20:36:52 | version 1.165, 2002/09/18 08:52:49 |
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| Line 1 | Line 1 |
| /* | /** @file |
| Parser | Parser: @b table parser class. |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | |
| $Id$ | Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | |
| */ | */ |
| static const char* IDENT_TABLE_C="$Date$"; | |
| #include "classes.h" | |
| #include "pa_common.h" | |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "_table.h" | |
| #include "pa_vtable.h" | #include "pa_vtable.h" |
| #include "pa_common.h" | |
| #include "pa_vint.h" | #include "pa_vint.h" |
| #include "pa_sql_connection.h" | |
| #include "pa_vbool.h" | |
| // global var | // class |
| VClass *table_class; | class MTable : public Methoded { |
| public: // VStateless_class | |
| Value *create_new_value(Pool& pool) { return new(pool) VTable(pool); } | |
| // methods | public: |
| MTable(Pool& pool); | |
| public: // Methoded | |
| bool used_directly() { return true; } | |
| }; | |
| // TODO: проверить ^set в ^menu & co | // methods |
| static void set_or_load( | static void get_copy_options(Request& r, const String& method_name, MethodParams *params, int param_index, |
| Request& r, | const Table& source, |
| const String& method_name, Array *params, | int& offset, |
| bool is_load) { | int& limit) { |
| offset=0; | |
| limit=0; | |
| if(params->size()<=param_index) | |
| return; | |
| Value& voptions=params->as_no_junction(param_index, "options must be hash, not code"); | |
| if(!voptions.is_string()) { | |
| if(Hash *options=voptions.get_hash(&method_name)) { | |
| int valid_options=0; | |
| if(Value *voffset=(Value *)options->get(*sql_offset_name)) { | |
| valid_options++; | |
| if(voffset->is_string()) { | |
| const String& soffset=*voffset->get_string(); | |
| if(soffset == "cur") | |
| offset=source.current(); | |
| else | |
| throw Exception("parser.runtime", | |
| &soffset, | |
| "must be 'cur' string or expression"); | |
| } else | |
| offset=r.process_to_value(*voffset).as_int(); | |
| } | |
| if(Value *vlimit=(Value *)options->get(*sql_limit_name)) { | |
| valid_options++; | |
| limit=r.process_to_value(*vlimit).as_int(); | |
| } | |
| if(valid_options!=options->size()) | |
| throw Exception("parser.runtime", | |
| &method_name, | |
| "called with invalid option"); | |
| } else | |
| throw Exception("parser.runtime", | |
| &method_name, | |
| "options must be hash"); | |
| } | |
| if(!limit) // zero limit = sould be 'nothing to copy', for methods zero means 'all' | |
| limit=-1; // thus fixing | |
| } | |
| static void _create(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| // clone/copy part? | |
| if(const Table *source=params->get(0).get_table()) { | |
| int offset, limit; | |
| get_copy_options(r, method_name, params, 1, *source, | |
| offset, limit); | |
| static_cast<VTable *>(r.get_self())->set_table(*new(pool) Table(pool, *source, offset, limit)); | |
| return; | |
| } | |
| // data is last parameter | // data is last parameter |
| Value *vdata=static_cast<Value *>(params->get(params->size()-1)); | Temp_lang temp_lang(r, String::UL_PASS_APPENDED); |
| // forcing | const String& data= |
| // [this param type] | r.process_to_string(params->as_junction(params->size()-1, "body must be code")); |
| // [this param type] | |
| r.fail_if_junction_(true, *vdata, | |
| method_name, "body must not be a junction"); | |
| // data or file_name | size_t pos_after=0; |
| char *data_or_filename=vdata->as_string().cstr(); | // parse columns |
| // data | Array *columns; |
| char *data=is_load?file_read(pool, r.absolute(data_or_filename)):data_or_filename; | if(params->size()==2) { |
| columns=0; | |
| } else { | |
| columns=new(pool) Array(pool); | |
| Array head(pool); | |
| data.split(head, &pos_after, "\n", 1, String::UL_AS_IS, 1); | |
| if(head.size()) | |
| head.get_string(0)->split(*columns, 0, "\t", 1, String::UL_AS_IS); | |
| } | |
| Table& table=*new(pool) Table(pool, &method_name, columns); | |
| // parse cells | |
| Array rows(pool); | |
| data.split(rows, &pos_after, "\n", 1, String::UL_AS_IS); | |
| Array_iter i(rows); | |
| while(i.has_next()) { | |
| Array& row=*new(pool) Array(pool); | |
| const String& string=*i.next_string(); | |
| // remove comment lines | |
| if(!string.size()) | |
| continue; | |
| string.split(row, 0, "\t", 1, String::UL_AS_IS); | |
| table+=&row; | |
| } | |
| // replace any previous table value | |
| static_cast<VTable *>(r.get_self())->set_table(table); | |
| } | |
| static void _load(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| // filename is last parameter | |
| Value& vfile_name=params->as_no_junction(params->size()-1, | |
| "file name must not be code"); | |
| // loading text | |
| char *data=file_read_text(pool, r.absolute(vfile_name.as_string())); | |
| // parse columns | // parse columns |
| Array *columns; | Array *columns; |
| Line 47 static void set_or_load( | Line 140 static void set_or_load( |
| uint line=origin.line; | uint line=origin.line; |
| #endif | #endif |
| if(params->size()==2) { | if(params->size()==2) { |
| columns=0; | columns=0; // nameless |
| } else { | } else { |
| columns=new(pool) Array(pool); | columns=new(pool) Array(pool); |
| if(char *row_chars=getrow(&data)) | while(char *row_chars=getrow(&data)) { |
| // remove empty&comment lines | |
| if(!*row_chars || *row_chars == '#') | |
| continue; | |
| do { | do { |
| String *name=new(pool) String(pool); | String *name=new(pool) String(pool); |
| name->APPEND(lsplit(&row_chars, '\t'), 0, file, line++); | name->APPEND_TAINTED(lsplit(&row_chars, '\t'), 0, file, line++); |
| *columns+=name; | *columns+=name; |
| } while(row_chars); | } while(row_chars); |
| break; | |
| } | |
| } | } |
| // parse cells | // parse cells |
| Table& table=*new(pool) Table(pool, method_name, columns); | Table& table=*new(pool) Table(pool, &method_name, columns); |
| char *row_chars; | char *row_chars; |
| while(row_chars=getrow(&data)) { | while(row_chars=getrow(&data)) { |
| // remove empty&comment lines | |
| if(!*row_chars || *row_chars == '#') | |
| continue; | |
| Array *row=new(pool) Array(pool); | Array *row=new(pool) Array(pool); |
| while(char *cell_chars=lsplit(&row_chars, '\t')) { | while(char *cell_chars=lsplit(&row_chars, '\t')) { |
| String *cell=new(pool) String(pool); | String *cell=new(pool) String(pool); |
| cell->APPEND(cell_chars, 0, file, line); | cell->APPEND_TAINTED(cell_chars, 0, file, line); |
| *row+=cell; | *row+=cell; |
| } | } |
| #ifndef NO_STRING_ORIGIN | |
| line++; | line++; |
| #endif | |
| table+=row; | table+=row; |
| }; | }; |
| // replace any previous table value | // replace any previous table value |
| r.self->as_vtable().set_table(table); | static_cast<VTable *>(r.get_self())->set_table(table); |
| } | } |
| /// @todo "x\nx" "xxx""xx" | |
| static void _save(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| Value& vfile_name=params->as_no_junction(params->size()-1, | |
| "file name must not be code"); | |
| static void _set(Request& r, const String& method_name, Array *params) { | Table& table=static_cast<VTable *>(r.get_self())->table(&method_name); |
| set_or_load(r, method_name, params, false); | |
| } | bool do_append=false; |
| String sdata(pool); | |
| if(params->size()==1) { // named output | |
| // write out names line | |
| if(table.columns()) { // named table | |
| Array_iter i(*table.columns()); | |
| while(i.has_next()) { | |
| sdata.append(*i.next_string(), //*static_cast<String *>(table.columns()->quick_get(column)), | |
| String::UL_TABLE); | |
| if(i.has_next()) | |
| sdata.APPEND_CONST("\t"); | |
| } | |
| } else { // nameless table | |
| if(int lsize=table.size()?static_cast<Array *>(table.get(0))->size():0) | |
| for(int column=0; column<lsize; column++) { | |
| char *cindex_tab=(char *)pool.malloc(MAX_NUMBER); | |
| snprintf(cindex_tab, MAX_NUMBER, "%d\t", column); | |
| sdata.APPEND_CONST(cindex_tab); | |
| } | |
| else | |
| sdata.APPEND_CONST("empty nameless table"); | |
| } | |
| sdata.APPEND_CONST("\n"); | |
| } else { // mode specified | |
| const String& mode=params->as_string(0, "mode must be string"); | |
| if(mode=="append") | |
| do_append=true; | |
| else if(mode=="nameless") | |
| /*ok, already skipped names output*/; | |
| else | |
| throw Exception("parser.runtime", | |
| &mode, | |
| "unknown mode, must be 'append'"); | |
| static void _load(Request& r, const String& method_name, Array *params) { | } |
| set_or_load(r, method_name, params, true); | // data lines |
| Array_iter i(table); | |
| while(i.has_next()) { | |
| Array_iter c(*static_cast<Array *>(i.next())); | |
| while(c.has_next()) { | |
| if(const String *s=c.next_string()) | |
| sdata.append(*s, | |
| String::UL_TABLE); | |
| if(c.has_next()) | |
| sdata.APPEND_CONST("\t"); | |
| } | |
| sdata.APPEND_CONST("\n"); | |
| } | |
| // write | |
| file_write(r.absolute(vfile_name.as_string()), | |
| sdata.cstr(), sdata.size(), true, do_append); | |
| } | } |
| static void _count(Request& r, const String&, Array *) { | static void _count(Request& r, const String& method_name, MethodParams *) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& value=*new(pool) VInt(pool, r.self->as_vtable().table().size()); | int result=static_cast<VTable *>(r.get_self())->table(&method_name).size(); |
| r.wcontext->write(value, String::Untaint_lang::NO /*always object, not string*/); | r.write_no_lang(*new(pool) VInt(pool, result)); |
| } | } |
| static void _line(Request& r, const String&, Array *) { | static void _line(Request& r, const String& method_name, MethodParams *) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& value=*new(pool) VInt(pool, 1+r.self->as_vtable().table().get_current()); | int result=1+static_cast<VTable *>(r.get_self())->table(&method_name).current(); |
| r.wcontext->write(value, String::Untaint_lang::NO /*always object, not string*/); | r.write_no_lang(*new(pool) VInt(pool, result)); |
| } | } |
| static void _offset(Request& r, const String&, Array *params) { | static void _offset(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Table& table=r.self->as_vtable().table(); | Table& table=static_cast<VTable *>(r.get_self())->table(&method_name); |
| if(params->size()) { | if(params->size()) { |
| if(int size=table.size()) { | bool absolute=false; |
| int offset=static_cast<int>( | if(params->size()>1) { |
| r.process(*static_cast<Value *>(params->get(0))).get_double()); | const String& whence=params->as_string(0, "whence must be string"); |
| table.set_current((table.get_current()+offset+size)%size); | if(whence=="cur") |
| absolute=false; | |
| else if(whence=="set") | |
| absolute=true; | |
| else | |
| throw Exception("parser.runtime", | |
| &whence, | |
| "is invalid whence, valid are 'cur' or 'set'"); | |
| } | } |
| } else { | |
| Value& value=*new(pool) VInt(pool, table.get_current()); | Value& offset_expr=params->as_junction(params->size()-1, "offset must be expression"); |
| r.wcontext->write(value, String::Untaint_lang::NO /*always object, not string*/); | table.offset(absolute, r.process_to_value(offset_expr).as_int()); |
| } else | |
| r.write_no_lang(*new(pool) VInt(pool, table.current())); | |
| } | |
| static void _menu(Request& r, const String& method_name, MethodParams *params) { | |
| Value& body_code=params->as_junction(0, "body must be code"); | |
| Value *delim_maybe_code=params->size()>1?¶ms->get(1):0; | |
| Table& table=static_cast<VTable *>(r.get_self())->table(&method_name); | |
| bool need_delim=false; | |
| int saved_current=table.current(); | |
| int size=table.size(); | |
| for(int row=0; row<size; row++) { | |
| table.set_current(row); | |
| StringOrValue sv_processed=r.process(body_code); | |
| const String *s_processed=sv_processed.get_string(); | |
| if(delim_maybe_code && s_processed && s_processed->size()) { // delimiter set and we have body | |
| if(need_delim) // need delim & iteration produced string? | |
| r.write_pass_lang(r.process(*delim_maybe_code)); | |
| need_delim=true; | |
| } | |
| r.write_pass_lang(sv_processed); | |
| } | |
| table.set_current(saved_current); | |
| } | |
| #ifndef DOXYGEN | |
| struct Row_info { | |
| Table *table; | |
| int key_field; | |
| Array *value_fields; | |
| Hash *hash; | |
| bool distinct; | |
| }; | |
| #endif | |
| static void table_row_to_hash(Array::Item *value, void *info) { | |
| Array& row=*static_cast<Array *>(value); | |
| Row_info& ri=*static_cast<Row_info *>(info); | |
| Pool& pool=ri.table->pool(); | |
| if(ri.key_field<row.size()) { | |
| VHash& result=*new(pool) VHash(pool); | |
| Hash& hash=*result.get_hash(0); | |
| for(int i=0; i<ri.value_fields->size(); i++) { | |
| int value_field=ri.value_fields->get_int(i); | |
| if(value_field<row.size()) | |
| hash.put( | |
| *ri.table->columns()->get_string(value_field), | |
| new(pool) VString(*row.get_string(value_field))); | |
| } | |
| const String& key=*row.get_string(ri.key_field); | |
| if(ri.hash->put_dont_replace(key, &result)) // put. existed? | |
| if(!ri.distinct) | |
| throw Exception("parser.runtime", | |
| &key, | |
| "duplicate key"); | |
| } | |
| } | |
| static void _hash(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| Table& self_table=static_cast<VTable *>(r.get_self())->table(&method_name); | |
| Value& result=*new(pool) VHash(pool); | |
| if(const Array *columns=self_table.columns()) | |
| if(columns->size()>0) { | |
| const String& key_field_name=params->as_no_junction(0, | |
| "key field name must not be code").as_string(); | |
| int key_field=self_table.column_name2index(key_field_name, true); | |
| bool distinct=false; | |
| int param_index=params->size()-1; | |
| if(Hash *options= | |
| params->as_no_junction(param_index, "param must not be code").get_hash(0)) { | |
| --param_index; | |
| int valid_options=0; | |
| if(Value *vdistinct=(Value *)options->get(*sql_distinct_name)) { | |
| valid_options++; | |
| distinct=r.process_to_value(*vdistinct).as_bool(); | |
| } | |
| if(valid_options!=options->size()) | |
| throw Exception("parser.runtime", | |
| &method_name, | |
| "called with invalid option"); | |
| } | |
| if(param_index==2) // bad options param type | |
| throw Exception("parser.runtime", | |
| &method_name, | |
| "options must be hash"); | |
| Array value_fields(pool); | |
| if(param_index>0) { | |
| Value& value_fields_param=params->as_no_junction(param_index, "value field(s) must not be code"); | |
| if(value_fields_param.is_string()) { | |
| value_fields+=self_table.column_name2index(value_fields_param.as_string(), true); | |
| } else if(Table *value_fields_table=value_fields_param.get_table()) { | |
| for(int i=0; i<value_fields_table->size(); i++) { | |
| const String& value_field_name= | |
| *static_cast<Array *>(value_fields_table->get(i))->get_string(0); | |
| value_fields+=self_table.column_name2index(value_field_name, true); | |
| } | |
| } else | |
| throw Exception("parser.runtime", | |
| &method_name, | |
| "value field(s) must be string or self_table" | |
| ); | |
| } else { // by all columns, including key | |
| for(int i=0; i<columns->size(); i++) | |
| value_fields+=i; | |
| } | |
| // integers: key_field & value_fields | |
| Row_info row_info={&self_table, key_field, &value_fields, result.get_hash(0), distinct}; | |
| self_table.for_each(table_row_to_hash, &row_info); | |
| } | |
| r.write_no_lang(result); | |
| } | |
| #ifndef DOXYGEN | |
| struct Table_seq_item { | |
| Array *row; | |
| union { | |
| char *c_str; | |
| double d; | |
| } value; | |
| }; | |
| #endif | |
| static int sort_cmp_string(const void *a, const void *b) { | |
| return strcmp( | |
| static_cast<const Table_seq_item *>(a)->value.c_str, | |
| static_cast<const Table_seq_item *>(b)->value.c_str | |
| ); | |
| } | |
| static int sort_cmp_double(const void *a, const void *b) { | |
| double va=static_cast<const Table_seq_item *>(a)->value.d; | |
| double vb=static_cast<const Table_seq_item *>(b)->value.d; | |
| if(va<vb) | |
| return -1; | |
| else if(va>vb) | |
| return +1; | |
| else | |
| return 0; | |
| } | |
| static void _sort(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| Value& key_maker=params->as_junction(0, "key-maker must be code"); | |
| bool reverse=params->size()>1/*..[desc|asc|]*/? | |
| reverse=params->as_no_junction(1, "order must not be code").as_string()=="desc": | |
| false; // default=asc | |
| Table& old_table=static_cast<VTable *>(r.get_self())->table(&method_name); | |
| Table& new_table=*new(pool) Table(pool, &method_name, old_table.columns()); | |
| Table_seq_item *seq=(Table_seq_item *)pool.malloc(sizeof(Table_seq_item)*old_table.size()); | |
| int i; | |
| // calculate key values | |
| bool key_values_are_strings=true; | |
| // save 'current' | |
| int saved_current=old_table.current(); | |
| for(i=0; i<old_table.size(); i++) { | |
| old_table.set_current(i); | |
| // calculate key value | |
| seq[i].row=(MethodParams *)old_table.get(i); | |
| Value& value=*r.process_to_value(key_maker).as_expr_result(true/*return string as-is*/); | |
| if(i==0) // determining key values type by first one | |
| key_values_are_strings=value.is_string(); | |
| if(key_values_are_strings) | |
| seq[i].value.c_str=value.as_string().cstr(); | |
| else | |
| seq[i].value.d=value.as_double(); | |
| } | } |
| // restore 'current' | |
| old_table.set_current(saved_current); | |
| // sort keys | |
| _qsort(seq, old_table.size(), sizeof(Table_seq_item), | |
| key_values_are_strings?sort_cmp_string:sort_cmp_double); | |
| // reorder table as they require in 'seq' | |
| for(i=0; i<old_table.size(); i++) | |
| new_table+=seq[reverse?old_table.size()-1-i:i].row; | |
| // replace any previous table value | |
| static_cast<VTable *>(r.get_self())->set_table(new_table); | |
| } | } |
| void initialize_table_class(Pool& pool, VClass& vclass) { | static bool _locate_expression(Request& r, const String& method_name, MethodParams *params) { |
| // ^table.set[data] ^table.set[nameless;data] | if(params->size()>1) |
| vclass.add_native_method("set", _set, 1, 2); | throw Exception("parser.runtime", |
| &method_name, | |
| "locate by expression has only one parameter - expression"); | |
| Value& expression_code=params->as_junction(0, "must be expression"); | |
| Table& table=static_cast<VTable *>(r.get_self())->table(&method_name); | |
| int saved_current=table.current(); | |
| int size=table.size(); | |
| for(int row=0; row<size; row++) { | |
| table.set_current(row); | |
| // ^table.load[file] ^table.load[nameless;file] | if(r.process_to_value(expression_code).as_bool()) |
| vclass.add_native_method("load", _load, 1, 2); | return true; |
| } | |
| table.set_current(saved_current); | |
| return false; | |
| } | |
| static bool _locate_name_value(Request& r, const String& method_name, MethodParams *params) { | |
| if(params->size()>2) | |
| throw Exception("parser.runtime", | |
| &method_name, | |
| "locate by name and value has only two parameters - name and value"); | |
| Table& table=static_cast<VTable *>(r.get_self())->table(&method_name); | |
| return table.locate( | |
| params->as_string(0, "column name must be string"), | |
| params->as_string(1, "value must be string") | |
| ); | |
| } | |
| static void _locate(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| bool result=params->get(0).get_junction()? | |
| _locate_expression(r, method_name, params) : | |
| _locate_name_value(r, method_name, params); | |
| r.write_no_lang(*new(pool) VBool(pool, result)); | |
| } | |
| static void _flip(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| Table& old_table=static_cast<VTable *>(r.get_self())->table(&method_name); | |
| Table& new_table=*new(pool) Table(pool, &method_name, 0/*nameless*/); | |
| if(old_table.size()) | |
| if(int old_cols=old_table.at(0).size()) | |
| for(int column=0; column<old_cols; column++) { | |
| Array& new_row=*new(pool) Array(pool, old_table.size()); | |
| for(int i=0; i<old_table.size(); i++) { | |
| const Array& old_row=old_table.at(i); | |
| new_row+=column<old_row.size()?old_row.get(column):new(pool) String(pool); | |
| } | |
| new_table+=&new_row; | |
| } | |
| r.write_no_lang(*new(pool) VTable(pool, &new_table)); | |
| } | |
| static void _append(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| // data | |
| Temp_lang temp_lang(r, String::UL_PASS_APPENDED); | |
| const String& string= | |
| r.process_to_string(params->as_junction(0, "body must be code")); | |
| // parse cells | |
| Array& row=*new(pool) Array(pool); | |
| string.split(row, 0, "\t", 1, String::UL_AS_IS); | |
| static_cast<VTable *>(r.get_self())->table(&method_name)+=&row; | |
| } | |
| static void _join(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| Table *maybe_src=params->as_no_junction(0, "table ref must not be code").get_table(); | |
| if(!maybe_src) | |
| throw Exception("parser.runtime", | |
| &method_name, | |
| "source is not a table"); | |
| Table& src=*maybe_src; | |
| Table& dest=static_cast<VTable *>(r.get_self())->table(&method_name); | |
| if(&src == &dest) | |
| throw Exception("parser.runtime", | |
| &method_name, | |
| "source and destination are same table"); | |
| int offset, limit; | |
| get_copy_options(r, method_name, params, 1, src, | |
| offset, limit); | |
| if(const Array *dest_columns=dest.columns()) { // dest is named | |
| int saved_src_current=src.current(); | |
| int m=src.size()-offset; | |
| if(!limit || limit>m) | |
| limit=m; | |
| int end=offset+limit; | |
| for(int src_row=offset; src_row<end; src_row++) { | |
| src.set_current(src_row); | |
| Array& dest_row=*new(pool) Array(pool); | |
| for(int dest_column=0; dest_column<dest_columns->size(); dest_column++) { | |
| const String *src_item=src.item(*dest_columns->get_string(dest_column)); | |
| dest_row+=src_item?src_item:new(pool) String(pool); | |
| } | |
| dest+=&dest_row; | |
| } | |
| src.set_current(saved_src_current); | |
| } else { // dest is nameless | |
| for(int src_row=0; src_row<src.size(); src_row++) | |
| dest+=&src.at(src_row); | |
| } | |
| } | |
| #ifndef DOXYGEN | |
| class Table_sql_event_handlers : public SQL_Driver_query_event_handlers { | |
| public: | |
| Table_sql_event_handlers(Pool& apool, const String& amethod_name, | |
| const String& astatement_string, const char *astatement_cstr) : | |
| pool(apool), | |
| method_name(amethod_name), | |
| statement_string(astatement_string), | |
| statement_cstr(astatement_cstr), | |
| columns(*new(pool) Array(pool)), | |
| row(0), | |
| table(0) | |
| { | |
| } | |
| void add_column(void *ptr, size_t size) { | |
| String *column=new(pool) String(pool); | |
| column->APPEND_TAINTED( | |
| (const char *)ptr, size, | |
| statement_cstr, 0); | |
| columns+=column; | |
| } | |
| void before_rows() { | |
| table=new(pool) Table(pool, &method_name, &columns); | |
| } | |
| void add_row() { | |
| (*table)+=(row=new(pool) Array(pool)); | |
| } | |
| void add_row_cell(void *ptr, size_t size) { | |
| String *cell=new(pool) String(pool); | |
| if(size) | |
| cell->APPEND_TAINTED( | |
| (const char *)ptr, size, | |
| statement_cstr, table->size()-1); | |
| (*row)+=cell; | |
| } | |
| private: | |
| Pool& pool; | |
| const String& method_name; | |
| const String& statement_string; const char *statement_cstr; | |
| Array& columns; | |
| Array *row; | |
| public: | |
| Table *table; | |
| }; | |
| #endif | |
| static void _sql(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| Value& statement=params->as_junction(0, "statement must be code"); | |
| ulong limit=0; | |
| ulong offset=0; | |
| if(params->size()>1) { | |
| Value& voptions=params->as_no_junction(1, "options must be hash, not code"); | |
| if(!voptions.is_string()) | |
| if(Hash *options=voptions.get_hash(&method_name)) { | |
| int valid_options=0; | |
| if(Value *vlimit=(Value *)options->get(*sql_limit_name)) { | |
| valid_options++; | |
| limit=(ulong)r.process_to_value(*vlimit).as_double(); | |
| } | |
| if(Value *voffset=(Value *)options->get(*sql_offset_name)) { | |
| valid_options++; | |
| offset=(ulong)r.process_to_value(*voffset).as_double(); | |
| } | |
| if(valid_options!=options->size()) | |
| throw Exception("parser.runtime", | |
| &method_name, | |
| "called with invalid option"); | |
| } else | |
| throw Exception("parser.runtime", | |
| &method_name, | |
| "options must be hash"); | |
| } | |
| Temp_lang temp_lang(r, String::UL_SQL); | |
| const String& statement_string=r.process_to_string(statement); | |
| const char *statement_cstr= | |
| statement_string.cstr(String::UL_UNSPECIFIED, r.connection(&method_name)); | |
| Table_sql_event_handlers handlers(pool, method_name, | |
| statement_string, statement_cstr); | |
| #ifdef RESOURCES_DEBUG | |
| struct timeval mt[2]; | |
| //measure:before | |
| gettimeofday(&mt[0],NULL); | |
| #endif | |
| r.connection(&method_name)->query( | |
| statement_cstr, offset, limit, | |
| handlers, | |
| statement_string); | |
| #ifdef RESOURCES_DEBUG | |
| //measure:after connect | |
| gettimeofday(&mt[1],NULL); | |
| double t[2]; | |
| for(int i=0;i<2;i++) | |
| t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0; | |
| r.sql_request_time+=t[1]-t[0]; | |
| #endif | |
| Table *result= | |
| handlers.table?handlers.table: // query resulted in table? return it | |
| new(pool) Table(pool, &method_name, 0); // query returned no table, fake it | |
| // replace any previous table value | |
| static_cast<VTable *>(r.get_self())->set_table(*result); | |
| } | |
| static void _columns(Request& r, const String& method_name, MethodParams *) { | |
| Pool& pool=r.pool(); | |
| Array& result_columns=*new(pool) Array(pool); | |
| result_columns+=new(pool) String(pool, "column"); | |
| Table& result_table=*new(pool) Table(pool, &method_name, &result_columns); | |
| Table& source_table=static_cast<VTable *>(r.get_self())->table(&method_name); | |
| if(const Array *source_columns=source_table.columns()) { | |
| Array_iter i(*source_columns); | |
| while(i.has_next()) { | |
| Array& result_row=*new(pool) Array(pool); | |
| result_row+=i.next(); | |
| result_table+=&result_row; | |
| } | |
| } | |
| r.write_no_lang(*new(pool) VTable(pool, &result_table)); | |
| } | |
| static void _select(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| Value& vcondition=params->as_junction(0, "condition must be expression"); | |
| Table& source_table=static_cast<VTable *>(r.get_self())->table(&method_name); | |
| Table& result_table=*new(pool) Table(pool, | |
| source_table.origin_string(), | |
| source_table.columns() | |
| ); | |
| int saved_current=source_table.current(); | |
| int size=source_table.size(); | |
| for(int row=0; row<size; row++) { | |
| source_table.set_current(row); | |
| bool condition=r.process_to_value(vcondition, | |
| /*0/*no name* /,*/ | |
| false/*don't intercept string*/).as_bool(); | |
| if(condition) // ...condition is true= | |
| result_table+=&source_table.at(row); // =green light to go to result | |
| } | |
| source_table.set_current(saved_current); | |
| r.write_no_lang(*new(pool) VTable(pool, &result_table)); | |
| } | |
| // constructor | |
| MTable::MTable(Pool& apool) : Methoded(apool, "table") { | |
| // ^table::create{data} | |
| // ^table::create[nameless]{data} | |
| // ^table::create[table] | |
| add_native_method("create", Method::CT_DYNAMIC, _create, 1, 2); | |
| // old name for compatibility with <= v 1.141 2002/01/25 11:33:45 paf | |
| add_native_method("set", Method::CT_DYNAMIC, _create, 1, 2); | |
| // ^table::load[file] | |
| // ^table::load[nameless;file] | |
| add_native_method("load", Method::CT_DYNAMIC, _load, 1, 2); | |
| // ^table.save[file] | |
| // ^table.save[nameless;file] | |
| add_native_method("save", Method::CT_DYNAMIC, _save, 1, 2); | |
| // ^table.count[] | // ^table.count[] |
| vclass.add_native_method("count", _count, 0, 0); | add_native_method("count", Method::CT_DYNAMIC, _count, 0, 0); |
| // ^table.line[] | // ^table.line[] |
| vclass.add_native_method("line", _line, 0, 0); | add_native_method("line", Method::CT_DYNAMIC, _line, 0, 0); |
| // ^table.offset[] ^table.offset[offset] | // ^table.offset[] |
| vclass.add_native_method("offset", _offset, 0, 1); | // ^table.offset(offset) |
| } | // ^table.offset[cur|set](offset) |
| add_native_method("offset", Method::CT_DYNAMIC, _offset, 0, 2); | |
| // ^table.menu{code} | |
| // ^table.menu{code}[delim] | |
| add_native_method("menu", Method::CT_DYNAMIC, _menu, 1, 2); | |
| // ^table:hash[key field name] | |
| // ^table:hash[key field name][value field name(s) string/table] | |
| add_native_method("hash", Method::CT_DYNAMIC, _hash, 1, 3); | |
| // ^table.sort{string-key-maker} ^table.sort{string-key-maker}[desc|asc] | |
| // ^table.sort(numeric-key-maker) ^table.sort(numeric-key-maker)[desc|asc] | |
| add_native_method("sort", Method::CT_DYNAMIC, _sort, 1, 2); | |
| // ^table.locate[field;value] | |
| add_native_method("locate", Method::CT_DYNAMIC, _locate, 1, 2); | |
| // ^table.flip[] | |
| add_native_method("flip", Method::CT_DYNAMIC, _flip, 0, 0); | |
| // ^table.append{r{tab}e{tab}c{tab}o{tab}r{tab}d} | |
| add_native_method("append", Method::CT_DYNAMIC, _append, 1, 1); | |
| // ^table.join[table][$.limit(10) $.offset(1) $.offset[cur] ] | |
| add_native_method("join", Method::CT_DYNAMIC, _join, 1, 2); | |
| // ^table:sql[query] | |
| // ^table:sql[query][$.limit(1) $.offset(2)] | |
| add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2); | |
| // ^table:columns[] | |
| add_native_method("columns", Method::CT_DYNAMIC, _columns, 0, 0); | |
| // ^table.select(expression) = table | |
| add_native_method("select", Method::CT_DYNAMIC, _select, 1, 1); | |
| } | |
| // global variable | |
| Methoded *table_class; | |
| // creator | |
| Methoded *MTable_create(Pool& pool) { | |
| return table_class=new(pool) MTable(pool); | |
| } |