go to post Timothy Leavitt · Mar 14, 2016 This should accomplish what you want: var tablePane = zen('yourTablePaneId'); // Don't actually execute the query the next time the table is rendered. tablePane.setProperty('initialExecute',false); // Clear the snapshot (cached results of the query, used for quick pagination) before re-rendering. // This is irrelevant if the tablePane isn't using snapshots. tablePane.setProperty('clearSnapshot',true); // Regenerate HTML for the tablePane - it'll be empty. tablePane.refreshContents(); Or, a bit more simply: var tablePane = zen('yourTablePaneId'); // Don't actually execute the query the next time the table is rendered. tablePane.setProperty('initialExecute',false); // Re-execute the query (this also clears the snapshot if snapshots are in use) tablePane.executeQuery(); If refreshContents() / executeQuery() is called again, query results will be shown, because initialExecute is set to true each time the tablePane is drawn.
go to post Timothy Leavitt · Mar 11, 2016 One solution would be to look at the audit database. It's not pretty, but there might not be any other way. ClassMethod GetLoginService() As %String { New $Namespace Zn "%SYS" Set tService = "" // Ensure that login events are being audited. Set tLoginEvent = ##class(Security.Events).Get("%System","%Login","Login",.tProps) If '$Get(tProps("Enabled")) { // Querying the audit DB probably won't do any good. Quit tService } // Warning: on systems with a lot of activity, this query might take a long time. // It might be worth filtering by recent UTCTimeStamp, assuming processes won't be that long-running. Set tRes = ##class(%SQL.Statement).%ExecDirect(, "select top 1 EventData from %SYS.Audit "_ "where EventSource = '%System' and EventType = '%Login' and Event = 'Login' and PID = ? "_ "order by UTCTimeStamp DESC, SystemID DESC, AuditIndex DESC",$Job) Set tHasResult = tRes.%Next() If (tHasResult) { Set tData = tRes.%Get("EventData") //NOTE: This makes assumptions about the format of EventData. //Particularly, that it looks something like: /* Service name: %Service_Bindings Login roles: %All $I: |TCP|1972|15396 $P: |TCP|1972|15396 */ // Set tFirstLine = $Piece(tData,$c(13,10)) //Presumably "Service name:" might be localized, but %Service_<something> would not be. Set:tFirstLine["%Service" tService = "%Service"_$Piece(tFirstLine,"%Service",2) } Quit tService } Note: if your application is using Caché security correctly, you'd probably need to define a privileged routine application to allow access to Security.Events and the audit database.
go to post Timothy Leavitt · Feb 18, 2016 Specifics on %CSP.Page / cspbind error handling:There are alternatives to modifying system-level error message translations. Even if the localization is changed, the end user would probably still see "SQLCODE -139," which isn't helpful. What you probably want to show the user is "Someone else has modified this record. Please reload the page and try again." or something similar.Using %CSP.Page and a form with cspbind, there's no way to customize the error handling in the generated <form name>_save function. It seems to always show any error message in an alert. An alternative would be to use a similar approach to form.csp and formsubmit.csp in the SAMPLES namespace, submitting the form and calling the <form name>Submit method of the page rather than using a hyperevent (in form_save()). Note that you don't need a separate page to handle the form submit; one page can do it all.Of course, if the form is saved with a POST rather than a hyperevent, and optimistic concurrency control is in use, it might be worth a separate call to the server immediately before submitting the form for an optimistic concurrency check. If someone else edited the record, the page could tell the user rather than submitting the form. This wouldn't prevent the error in question, but would at least make it much less likely.(Side note: %CSP.Page/cspbind is very old technology. There are better tools available now, but if you're stuck with it in a large existing project, that's understandable.) General thoughts on showing users friendly error messages:The more general problem is: "Often, the error codes and messages the system produces are not helpful to an end user. How do you show the user the information they need when an error occurs?"This gets more complicated because error messages can come from very different sources - for example, SQL, an object %Save, a variable being undefined, or the application detecting a user error.The standard for the large Caché-based application I work on is:Within UI classes (class-based CSP or Zen, in our case), server-side code is wrapped in try-catch blocks.Different types of exceptions (subclasses of %Exception.AbstractException) are thrown for the different types of errors that occur. These may be:SQLCODEs and associated messages from embedded or dynamic SQLError %Status codes from object %Saves and various other thingsGeneral internal errors in application business logicUser errors detected in business logic. (These are treated differently for logging purposes; user errors may be more common than system errors and might not be logged.)System errors (<UNDEFINED>, <SUBSCRIPT>, etc.)Any of these types of exceptions. except system errors, may include a user-friendly message explaining what went wrong.If an exception is caught, a method is called to (1) log that an error occurred and (2) either provide a description of the error that the user can understand, or else just say that an error happened (with the confusing details omitted, although they are logged).If the exception already has a friendly message for the user, it's returned.Otherwise, for error SQLCODEs and error %Status codes, we provide general messages for concurrency-related errors and some other common error codes. We also have a system for interpreting foreign and unique key violations (from an SQLCODE or %Status) and providing more descriptive messages based on those.Worst case, the message "An internal error occurred (log ID _____)" is returned.The message is shown to the user in red text, an alert dialog (ideally not a vanilla JavaScript alert), or however else makes sense in context.There are macros for the different types of exceptions and for getting the user-friendly message, for ease of maintainability.
go to post Timothy Leavitt · Feb 16, 2016 This has been bothering me a little bit; %Dictionary.* should really be a last-resort option, in my opinion, and it isn't easy to use it to get the full picture from an SQL perspective.Here are some alternative/possibly-better solutions, using %SQL.StatementMetadata and INFORMATION_SCHEMA. It looks like INFORMATION_SCHEMA is more exactly what you were looking for, if you're running on a recent enough Caché version (2015.1+). I haven't been able to find documentation on it other than the class reference, though. /// NOTE: It could be good to validate pTableName to avoid SQL injection. (Outside the scope of this demo.)/// This works pre-2015.1 (since %SQL.Statement was introduced - maybe 2012.2+?)ClassMethod GetTableColumns(pTableName As %String) As %List{ #dim tResult As %SQL.StatementResult #dim tMetadata As %SQL.StatementMetadata Set tStmt = ##class(%SQL.Statement).%New() $$$ThrowOnError(tStmt.%Prepare("select top 0 * from "_pTableName)) Set tResult = tStmt.%Execute(), tMetadata = tResult.%GetMetadata() Set tCols = "" For i=1:1:tMetadata.columnCount { Set tCols = tCols_$ListBuild(tMetadata.columns.GetAt(i).colName) } Quit tCols}/// This will only work on 2015.1+; INFORMATION_SCHEMA is a new feature. For more information, see the class reference for it in the documentation.ClassMethod GetTableColumnsNew(pTableName As %String) As %List{ #dim tResult As %SQL.StatementResult Set tStmt = ##class(%SQL.Statement).%New() Set tSchema = $Piece(pTableName,".") Set tTableName = $Piece(pTableName,".",2) $$$ThrowOnError(tStmt.%Prepare("select COLUMN_NAME from INFORMATION_SCHEMA.COLUMNS where TABLE_SCHEMA = ? and TABLE_NAME = ?")) Set tResult = tStmt.%Execute(tSchema,tTableName) Set tCols = "" While tResult.%Next(.tSC) { Set tCols = tCols_$ListBuild(tResult.%Get("COLUMN_NAME")) } $$$ThrowOnError(tSC) Quit tCols}Using this:SAMPLES>set cols = ##class(Demo.TableColumns).GetTableColumns("Sample.Person")SAMPLES>w $lts(cols)ID,Age,DOB,FavoriteColors,Name,SSN,Spouse,Home_City,Home_State,Home_Street,Home_Zip,Office_City,Office_State,Office_Street,Office_ZipSAMPLES>set cols = ##class(Demo.TableColumns).GetTableColumnsNew("Sample.Person")SAMPLES>w $lts(cols) ID,Age,DOB,FavoriteColors,Name,SSN,Spouse,Home_City,Home_State,Home_Street,Home_Zip,Office_City,Office_State,Office_Street,Office_Zip
go to post Timothy Leavitt · Feb 9, 2016 In various posts, you've talked about having an implementation tool that is run from the browser, and you've also talked about running it from terminal. Here's a design that would be well-suited to both:* Settings that apply to the whole thing are properties of an object (class extends %RegisteredObject)* There's a class method (static method in other languages) to get the settings' values interactively* There's an instance method to run the setup on an instance of the class Include %syPromptClass Demo.SetupTool Extends %RegisteredObject{Property Type As %String(VALUELIST = ",Gateway,IHE");Property Setting1Value As %String [ InitialExpression = "ABC" ];Property Setting2Value As %Boolean [ InitialExpression = 1 ];ClassMethod RunInteractive(){ Set tSettingsObject = ..%New() Write "Deployment Utility" Set options(1) = "Gateway" Set options(2) = "IHE" Do ##class(%Prompt).GetArray("Deployment Type?",.tType,.options,,,,$$$InitialDisplayMask+$$$MatchArrayMask) Set tSettingsObject.Type = tType Set tString = tSettingsObject.Setting1Value Do ##class(%Prompt).GetString("Enter a string: ",.tString) Set tSettingsObject.Setting1Value = tString Set tYesOrNo = tSettingsObject.Setting2Value Do ##class(%Prompt).GetYesNo("Is this a helpful demo? ",.tYesOrNo) Set tSettingsObject.Setting2Value = tYesOrNo Do tSettingsObject.DoSetup()}Method DoSetup(){ Write !,"Starting ",..Type," deployment...",! // Here, do things based on properties of this object. If '..Setting2Value { //Do something specific if Setting2Value is false. Write "Why not?",! }}} Then, for example:USER>d ##class(Demo.SetupTool).RunInteractive()Deployment Utility 1) Gateway2) IHE Deployment Type? 1 GatewayEnter a string: ABC =>Is this a helpful demo? Yes => NoStarting Gateway deployment...Why not? Or, if you want to do the same kind of setup from a simple ZenMethod in a Zen page or something, you could set up a settings object and then call DoSetup() on it.USER>set tSettings = ##class(Demo.SetupTool).%New() USER>set tSettings.Type = "IHE" USER>d tSettings.DoSetup() Starting IHE deployment...
go to post Timothy Leavitt · Feb 8, 2016 Here's some relevant documentation: http://docs.intersystems.com/cache20152/csp/docbook/DocBook.UI.Page.cls?KEY=GORIENT_ch_cos#GORIENT_cos_scope One way to make this work as-is would be to put tstVar in the "public" list: start set tstVar = "Green" do TestIt() TestIt() [tstVar] { write tstVar } Another would be to give the variable a name starting with a %: start set %tstVar = "Green" do TestIt() TestIt() { write %tstVar }
go to post Timothy Leavitt · Feb 8, 2016 Look at $zconvert (abbreviated $zcvt): http://docs.intersystems.com/cache20152/csp/docbook/DocBook.UI.Page.cls?KEY=RCOS_fzconvert For example: USER>w $zcvt("thisIsATest","U") THISISATEST USER>w $zcvt("thisIsATest","L") thisisatest
go to post Timothy Leavitt · Feb 5, 2016 "GOTO label" jumps to a specified label in the same context frame."DO label" adds a new context frame. Code at the specified label will execute until a QUIT/RETURN or the end of the routine, then execution will resume at the next line after the DO command.So in this case it's running through the whole routine (including everything under the dataentry label, with dtype already set to something valid), including printing the message at the end. Then it proceeds to the next thing after the DO command, which is printing that line again.For what it's worth, if you're building command-line tools, %Library.Prompt may save you a lot of time. See the class reference for more informatioan.For example: #include %syPrompt New options,dtype Write "Deployment Utility" Set options(1) = "Gateway" Set options(2) = "IHE" Do ##class(%Prompt).GetArray("Deployment Type?",.dtype,.options,,,,$$$InitialDisplayMask+$$$MatchArrayMask) Write !, "Starting ", dtype," deployment..." Quit
go to post Timothy Leavitt · Feb 4, 2016 At a Caché level (for namespaces, databases, code, and security), %Installer may be useful; see: http://docs.intersystems.com/cache20152/csp/docbook/DocBook.UI.Page.cls?KEY=GCI_manifest For Ensemble, there are some additional deployment-related features that might do more for you in terms of settings and lookup tables. See: http://docs.intersystems.com/ens20152/csp/docbook/DocBook.UI.Page.cls?KEY=EGDV_deploying#EGDV_deployment_overview
go to post Timothy Leavitt · Jan 21, 2016 Another option, and a caveat about ^%SYS("SystemMode"): It looks like you're using CCR.* "Environment" is a meaningful term in that context. In namespaces configured for CCR, you can retrieve the environment with $$Env^%buildccr, i.e.: CCR>w $$Env^%buildccr BASE It is possible to have multiple namespaces on the same instance configured as different environments. ^%SYS("SystemMode") is set to the furthest-along environment (of BASE-TEST-LIVE) of any namespace on the instance. That is, if you have a namespace configured as BASE, and configure another one as TEST, ^%SYS("SystemMode") will be changed to TEST - and this is system-wide. Just something to keep in mind. *CCR (Change Control Record) is an InterSystems in-house application used in sites where InterSystems does implementation work, so this isn't as generally relevant as ^%SYS("SystemMode").
go to post Timothy Leavitt · Jan 20, 2016 I tend to use %INLIST $ListFromString(?) in cases like this. (Assuming that the list is something like IDs that wouldn't contain commas.) So, in your example: <tablePane width="25%" id="testTable" sql="SELECT Id from Tracking_Data.Person WHERE Id %INLIST $ListFromString(?)" showQuery="true"> <parameter/> </tablePane> <button caption="Test" onclick="zenThis.composite.testTestTable();"/> ClientMethod testTestTable() [ Language = javascript ] { var table = zenThis.composite.getChildById("testTable"); table.setProperty('parameters', 1, '1,2'); }
go to post Timothy Leavitt · Jan 20, 2016 This should definitely work. Are you setting the showTabBar property to true for the nested tabGroup? If not, that might explain why nothing is showing up.
go to post Timothy Leavitt · Dec 17, 2015 I think SYS.Database (in %SYS), rather than Config.Databases, can accomplish what you want. Particularly, you can open an object representing a database, call its Delete() method, and then call %Save() on it. That seems to have the same effect you're looking for. Here's a sample class (Demo.Recreate): Include %occInclude Class Demo.Recreate { ClassMethod Run(pDBDirectory As %String) { new $Namespace zn "%SYS" try { //Get the database set tDB = ##class(SYS.Database).%OpenId(pDBDirectory) If '$IsObject(tDB) { $$$ThrowStatus($$$ERROR($$$GeneralError,"Database "_pDBDirectory_" not found.")) } write !,"Properties of database:",! zw tDB write ! //For demonstration purposes: show contents of a global in that DB for i=1:1:10 { set ^["^^"_pDBDirectory]demo(i) = i } write "Contents of ^[""^^"_pDBDirectory_"""]demo: ",! zw ^["^^"_pDBDirectory]demo write ! write "Deleting database..." $$$THROWONERROR(tSC,tDB.Delete()) write " done.",! write "Recreating database..." $$$THROWONERROR(tSC,tDB.%Save()) write " done.",! write ! write !,"Properties of database:",! zw tDB write ! //For demonstration purposes: show that contents of global in that DB are gone write "Contents of ^[""^^"_pDBDirectory_"""]demo: ",! zw ^["^^"_pDBDirectory]demo zw tDB } catch anyException { write anyException.DisplayString(),! } } }
go to post Timothy Leavitt · Dec 16, 2015 Rather than projecting the property as a table, one option would be to write a custom class query that $orders over the index global, make the column name "KEYS", and make it an [SqlProc]. The SQL would then look like: SELECT DISTINCT KEYS FROM MyClass_CustomQueryName() It would be nice if there was a generic solution. My first thought was to add this query to an index class (i.e., one that extends %Library.CacheIndex) and generate <query>Fetch/Execute/Close methods for indices that on property(KEYS), but it seems that queries aren't supported as index members. The <indexName><query>Fetch/Execute/Close methods are generated in the persistent class, but there's no actual class query visible from SQL. Maybe %Library.FunctionalIndex would work if you don't mind reinventing the standard bitmap insert/update/delete, but I suspect that you'd end up losing FOR SOME %ELEMENT in this approach, and would need to replace it with %FIND. I'll send you what I came up with while investigating - maybe it will provide food for thought.