go to post Vitaliy Serdtsev · Oct 7, 2021 For more details, see the documentation on Caché, for example: Namespace tab of the Studio Workspace window (and not Project tab) And more (see screenshot)
go to post Vitaliy Serdtsev · Oct 7, 2021 Connecting to Remote Servers Installing a Development Environment Using Studio (Class Browser) Workspace -> Namespace
go to post Vitaliy Serdtsev · Oct 6, 2021 Those experienced with encryption systems for databases may have concerns about encryption having dire effects on performance, but, with Caché, these concerns are unfounded. Encryption and decryption have been optimized, and their effects are both deterministic and small for any Caché platform; in fact, there is no added time at all for writing to the database. Managed Key Encryption: Protecting Data on Disk InterSystems recommends using its encryption management tools: When built-in hardware instructions are available for encryption-related activities, these activities are considerably faster then when using software-based encryption. The encryption management tools use hardware instructions when they are available. The encryption management tools can use keys stored on a KMIP server. The encryption management tools can run in FIPS mode. About Encryption Management Operations High-Performance Encryption for Databases in Financial Services (PDF)
go to post Vitaliy Serdtsev · Oct 4, 2021 But in new Native API for IRIS there are no proxies, just class methods/functions are called from app and I think, it should be pretty the same as calling this methods/functions from terminal window. Introduction to the Native API Using .NET Reverse Proxy Objects The Native API allows you to create instances of ObjectScript classes on InterSystems IRIS and generate Object Gateway proxy objects for them at runtime. Your .NET application can use proxies to work with ObjectScript objects as easily as if they were native .NET objects.
go to post Vitaliy Serdtsev · Oct 4, 2021 Yes, most likely this is a feature of the API. Here's what I found about it in the "old" documentation: In some situations, caching may not be desirable. For example, if an object is opened with Concurrency Level 4 (Exclusive Lock), the lock will not be released until the next server call. To destroy the object immediately, you can call Close() with the optional useCache parameter set to false Closing Proxy Objects PS: by the way, for ActiveX, Factory.ForceSync() method serves the same purpose.
go to post Vitaliy Serdtsev · Sep 30, 2021 I did a test and that's what found out. It is assumed that the data has already been generated. COS Class dc.test Extends %Persistent { ClassMethod Checking(CardNo As %String) As %String { s tmp=..%OpenId(CardNo,4) q "test" } }If executed from the terminal, the lock is removed automatically immediately after the method is completed: USER>w ##class(dc.test).Checking("1") testC# // ... string json = iris.ClassMethodString("dc.test", "Checking", "1"); // here the lock is still present db.ReleaseIRISObjects(); // or iris.ReleaseAllLocks(); // here already more is no lock
go to post Vitaliy Serdtsev · Sep 29, 2021 ProcedureBlock does not apply to your issue at all you didn't initially indicate that the issue is with C# use ReleaseIRISObjects Example: IRISConnection db; IRIS iris; IRISObject person; // ... using (person = (IRISObject)iris.ClassMethodObject("Sample.Person", "%OpenId", "1", "4")) { } /* or person = (IRISObject)iris.ClassMethodObject("Sample.Person", "%OpenId", "1", "4") person.Dispose(); person = null; */ db.ReleaseIRISObjects();
go to post Vitaliy Serdtsev · Sep 29, 2021 And if so? ClassMethod TestLock() As %Status { New id,obj Set id = $Order(^ZUser.NewClass1D("")) If id = "" { Set obj = ##class(ZUser.NewClass1).%New() Do obj.%Save() } Set id = $Order(^ZUser.NewClass1D("")) Set obj = ##class(ZUser.NewClass1).%OpenId(id, 4) ; in case of usage Not ProcedureBlock you should ; kill obj or set obj="" (and all others variables with this object reference) to release the lock Return $$$OK }
go to post Vitaliy Serdtsev · Sep 29, 2021 COS: Class dc.DPasarela Extends %RegisteredObject { Property STREAM As %Stream.TmpBinary; Method PostMsg() { s s=$tr($j("",$$$MaxStringLength)," ",$c(0)) f i=1:1:5 d ..STREAM.Write(s) } }C# IRISObject STREAM; MemoryStream stream = new MemoryStream(); string len1, len2; IRISObject pasarela = (IRISObject)iris.ClassMethodObject("dc.DPasarela", "%New"); pasarela.InvokeVoid("PostMsg"); STREAM = (IRISObject) pasarela.Get("STREAM"); while (!Convert.ToBoolean(STREAM.GetBool("AtEnd"))) { stream.Write(STREAM.InvokeBytes("Read", 3641144),0, 3641144); } len1 = STREAM.GetString("Size"); // 18205720 (3641144*5) len2 = stream.Length.ToString(); // 18205720 (3641144*5) // =========== AGAIN =========== STREAM.InvokeVoid("MoveToEnd"); pasarela.InvokeVoid("PostMsg"); stream.SetLength(0); while (!Convert.ToBoolean(STREAM.GetBool("AtEnd"))) { stream.Write(STREAM.InvokeBytes("Read", 3641144), 0, 3641144); } len1 = STREAM.GetString("Size"); // 36411440 (18205720*2) len2 = stream.Length.ToString(); // 36411440 (18205720*2) byte[] bytesS = stream.ToArray();
go to post Vitaliy Serdtsev · Sep 29, 2021 COS: Class dc.DPasarela Extends %RegisteredObject { Property Value As %Numeric; Property Title As %String; Property Message As %String; Property STREAM As %Stream.TmpCharacter; Method PostMsg( SessionId As %String, Msg As %String, bytesS As %Binary, STREAMin As %Stream.TmpCharacter, Output STREAMout As %Stream.TmpCharacter) { set ..Value = 5, ..Title = SessionId, ..Message = Msg_" "_bytesS do:$IsObject(STREAMin) ..STREAM.CopyFrom(STREAMin) set STREAMout=##class(%Stream.TmpCharacter).%New() do STREAMout.Write("bla-bla-bla") } }C#: IRISObject pasarela = (IRISObject)iris.ClassMethodObject("dc.DPasarela", "%New"); byte[] bytesS = new byte[3]; // In real world this is a BASE64 encoded JSON bytesS[0] = 233; // é bytesS[1] = 234; // ê bytesS[2] = 59; // ; IRISReference refSTREAMout = new IRISReference(null); IRISObject STREAMin = (IRISObject)iris.ClassMethodObject("%Stream.TmpCharacter", "%New"); STREAMin.InvokeString("Write","blablabla"); pasarela.InvokeVoid("PostMsg", "aSession", "aMsg", bytesS, STREAMin, refSTREAMout); int aValue = Convert.ToInt32(pasarela.GetLong("Value")); // 5 string aTitle = pasarela.GetString("Title"); // aSession string aMessage = pasarela.GetString("Message"); // aMsg éê; string aSTREAMout = ((IRISObject)refSTREAMout.value).InvokeString("Read"); // bla-bla-bla string aSTREAM = ((IRISObject)pasarela.GetObject("STREAM")).InvokeString("Read"); // blablabla
go to post Vitaliy Serdtsev · Sep 28, 2021 See %SYS.GlobalQuery_NameSpaceList(). Example: select Name,Location from %SYS.GlobalQuery_NameSpaceList(,'*',0,,,1,1) select Name,Location from %SYS.GlobalQuery_NameSpaceList('SAMPLES','*',0,,,1,1)
go to post Vitaliy Serdtsev · Sep 28, 2021 and second, I would like to read the doc everywhere! For example, I have a 10 hour flight, and want to work. And in case, a server only has a local LAN access, then you have no docu!). I fully support it. But I'm afraid now, apart from reading the documentation in PDF format, you can forget about local documentation ("DOCBOOK" database) with normal search and navigation. It's a pity..
go to post Vitaliy Serdtsev · Sep 27, 2021 No. I couldn't find how to do this in the documentation (probably I searched badly), so I don't publish here undocumented features anymore. But you can easily determine this from the source code.
go to post Vitaliy Serdtsev · Sep 27, 2021 Yes. By default, a strictly defined list of packages/classes is displayed in IRIS for security purposes, but you can change this behavior locally.
go to post Vitaliy Serdtsev · Sep 27, 2021 In Caché all classes is visible, and in IRIS, you need to enable their display.
go to post Vitaliy Serdtsev · Sep 27, 2021 Or so: set tmp = ##class(%IO.StringStream).%New() do tmp.Write("This is my text") do tmp.Seek(11) do tmp.Write(" NEW") do tmp.Rewind() write tmp.Read(tmp.Size) ;This is my NEW text
go to post Vitaliy Serdtsev · Sep 23, 2021 See %SQL.StatementResult:%DisplayFormatted() Simple sample (for namespace "SAMPLES"): set st = ##class(%SQL.Statement).%New(2,"Sample") set sql = 3 set sql(1) = "select TOP 5 %ID as id, Name, DOB, Home_State" set sql(2) = "from Person where Age > 40" set sql(3) = "order by 2" do st.%Prepare(.sql) for type="txt","pdf","csv","html","xml" { set rs = st.%Execute() do rs.%DisplayFormatted(type,"C:\Temp\report") }As a result, the following files are generated: report.csv report.html report.pdf report.txt report.xml
go to post Vitaliy Serdtsev · Sep 17, 2021 Instead of set str=$e(str,1,*-1) , will be a little faster set $e(str,*)="" But this is already saving on matches. PS: for the sake of interest, I checked on a special version of Caché (very old) with server-side JavaScript (not to be confused with Node.js) Source code Include %occInclude Class dc.test [ Abstract ] { ClassMethod MakeStringOnJS(N) [ Language = javascript] { var myval="a", arr=[], stop, str, start=(new Date()).getTime(); for (var i=0;i<N;i++) arr[i]=myval; str=arr.join(); stop=(new Date()).getTime(); Cache.Console.WriteLine("[JavaScript] execution: ",stop-start,"(ms) len(str): ",str.length); // Force a Garbage Collection Cache.Class.$JavaScript_Runtime.$GarbageCollect(); } ClassMethod MakeStringOnCOS(N) { s myval="a", str="", time=$zh f i=1:1:N s str=str_myval_"," s $e(str,$l(str))="" ; not supported $e(str,*) w $$$FormatText("[COS] execution: %1(ms) len(str): %2",$zh-time*1000,$l(str)),! } /// d ##class(dc.test).Test() ClassMethod Test(N = 10) { d ..MakeStringOnJS(N), ..MakeStringOnCOS(N) } } USER>d ##class(dc.test).Test(1800000) [JavaScript] execution: 99(ms) len(str): 3599999 [COS] execution: 126.683(ms) len(str): 3599999 By the way, the JS code has almost no limit on the string size.
go to post Vitaliy Serdtsev · Sep 17, 2021 An example without complex formulas and very fast Include %DeepSee Class dc.test [ Abstract ] { ClassMethod FirstLastDayMonth( year = 2015, month = 2) { s mm=$$$iscPadZero(month,2), firstDay=$zdh(year_mm_"01",8), lastDay=$zdh(year_mm_$$$iscDaysInMonth(year,month),8), firstDayName=$zd(firstDay,12,,,,,,,,1), lastDayName=$zd(lastDay,12,,,,,,,,1) w $$$FormatText("firstDay = %1 (%2), lastDay = %3 (%4)",$zd(firstDay),firstDayName,$zd(lastDay),lastDayName),! } /// d ##class(dc.test).Test() ClassMethod Test() { d ..FirstLastDayMonth(2015,2), ..FirstLastDayMonth(2021,9) } } USER>d ##class(dc.test).Test() firstDay = 01.02.2015 (Sunday), lastDay = 28.02.2015 (Saturday) firstDay = 01.09.2021 (Wednesday), lastDay = 30.09.2021 (Thursday)