mysql - Best Practice to go from sphinx db to somewhat complex golang struct -


i trying convert sphinx query via mysql golang struct , having hard time. seems should common sort of problem, far i'm stuck converting map or parsing output myself. specifically, have schema in sphinx looks {source: {id:string, subid:string, campaigns:[]{campaignid:string, status:string}}}

i've tried using simple rows.scan doesn't me parse repeating field, unparsed string. in sphinx, key's aren't in quotation marks, json.unmarshal doesn't seem @ all. , using sqlx, i've tried build following struct 

type campaignstatus struct {     campaignid string     status string } type source struct {     id               string     subid    string     statusbycampaign []campaignstatus } type status struct {     source }

and passing in status struct row.scanstruct() , either "missing destination name source" error or if name source member in status, "sql: scan error on column index 0: unsupported scan, storing driver.value type []uint8 type *v1.source". full disclosure, sphinx schema has few other columns peers statusbycampaign, come after , don't care them in use case.

this seems has have been come across before, can't seem find solution outside of writing own parser, loath do.

i found out legacy system i'm working using asp.net library called servicestack serialize/deserialize sphinx db, , using it's own custom jsv format, author of servicestack optimized mix of json , csv, hasn't been adopted anywhere else far can tell.

so looks i'm going either rewrite library in go, or more change indexing algorithm use json.


Comments

Post a Comment

Popular posts from this blog

c# - Update a combobox from a presenter (MVP) -

i using mvp in project, new in mvp. have 2 comboboxes. when select option in combobox, combobox should filled new data. this action in presenter. view 'view1' in presenter, , introduced combobox1 , combobox2 properties in 'view1', because need 'datasource', 'displaymember', 'valuemember' , 'refresh()' in method below. but, when using pattern, enough send property like public string combobox2 { { return combobox1.selectedvalue.tosstring(); } } into presenter not whole combobox. how can solve problem? public void onselectedindexchangedcombobox1() { if (view1.combobox1.selectedindex == -1) { return; } datatable dt = tools.getdatatable("a path"); var query = (from o in dt.asenumerable() o.field<string>("afield") == farmerview.combobox1.selectedvalue.tostring() orderby o.field<string>("anotherfield") select...
Read more

How to understand 2 main() functions after using uftrace to profile the C++ program? -

i trying uftrace profile following simple c++ program: #include <iostream> class { public: a() {std::cout << "a created" << std::endl;} ~a() {std::cout << "a destroyed" << std::endl;} }; int main() { a; return 0; } the profile result this: # uftrace a.out created destroyed # duration tid function 2.026 [ 4828] | __cxa_atexit(); [ 4828] | main() { [ 4828] | __static_initialization_and_destruction_0() { 89.397 [ 4828] | std::ios_base::init::init(); 0.768 [ 4828] | __cxa_atexit(); 93.029 [ 4828] | } /* __static_initialization_and_destruction_0 */ 94.425 [ 4828] | } /* main */ [ 4828] | main() { [ 4828] | a::a() { 11.104 [ 4828] | std::operator <<(); 10.825 [ 4828] | std::basic_ostream::operator <<(); 24.514 [ 4828] | } /* a::a */ [ 4828] | a::~a() { 0.978 [ 4828] | ...
Read more

How to put a lock and transaction on table using spring 4 or above using jdbcTemplate and annotations like @Transactional? -

i trying put lock on table while writing on table , if happened in between roll-back . trying convert below code lock table test_g1 read; lock table test_g write; -- begin; start transaction; insert test_g1 values(143); insert test_g values(145); select * test_g1; select * test_g; rollback; select * test_g; unlock tables; how convert above code @transactional spring jdbctemplate code? @transactional(rollbackfor={dataaccessexception.class}) public void test(){ jdbctemplate.execute("insert test1 (id, nam) values (4, 'a')"); throw new dataaccessexception("error") { }; } here trying throw error, insert statement should rollback it's not happening . thanks edit-1 attaching code , doing in jdbcdaoimpl.java , mentioned problem comment above test() . app.java package com.cgiri.javabrains.spring4; import org.springframework.beans.factory.annotation.autowired; import org.springframework.context.applic...
Read more