Swift 3 - Reading array and dictionary from JSON -
i don't know how access nested array/dictionary values in result. tried many variations, possibly part wrong didn't values. here result , want values of subarticles array. in advance!
i have following question: i have variable value in program declared value. i want convert value byte array.. how can serialize byte array , back? found examples related other types such double or int, not any. this should need. it's pretty similar how 1 in java. import java.io.{bytearrayinputstream, bytearrayoutputstream, objectinputstream, objectoutputstream} object serialization extends app { def serialise(value: any): array[byte] = { val stream: bytearrayoutputstream = new bytearrayoutputstream() val oos = new objectoutputstream(stream) oos.writeobject(value) oos.close stream.tobytearray } def deserialise(bytes: array[byte]): = { val ois = new objectinputstream(new bytearrayinputstream(bytes)) val value = ois.readobject ois.close value } println(deserialise(serialise("my test"))) println(deserialise(serialise(list(1)))) println(deserialise(serialise(map(1 -> 2)))) println(deserialise(seri...
i have small database (50mb) , i'm on basic plan. there single user, need create many databases (always 1 per user) since used training purposes. each database created doing following statement: create database training1 copy of modeldatabase1 we seem getting very slow performance when first query database, afterwards seems acceptable. to give idea: have sp: startupevents runs when application started. query takes 25 seconds run first time. seems incredible since database small, , tables query calls don't contain many records. if run procedure afterwards executes immediately... how can avoid this?
i have code working: entitymanager entitymanager = getentitymanager(); entitymanager.gettransaction().begin(); string query = "db.band.find({})"; list<band> list = (list<band>) entitymanager.createnativequery(query, band.class).getresultlist(); entitymanager.close(); return list; it returns list no problem. want sort list date : entitymanager entitymanager = getentitymanager(); entitymanager.gettransaction().begin(); string query = "db.band.find({something__id:objectid(\"" + myid + "\")}).sort({\"somethingelse.date\":-1})"; list<band> list = (list<band>) entitymanager.createnativequery(query, band.class).getresultlist(); entitymanager.close(); return list; my console gives me message: org.bson.json.jsonparseexception: json reader expecting value found 'db' i checked string working in mongo console , did. ideas? edit: tried putting "something__id" between quotes because would...
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