Home > Class Reference > ENSLIB namespace > EnsLib.JavaGateway.AbstractOperation
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abstract class EnsLib.JavaGateway.AbstractOperation extends Ens.BusinessOperation

An abstract business operation that can be used as a base class for Business Operation classes that invoke Java methods via the Java Gateway. Implementing message handler methods that invoke functions on the Java Gateway is the responsibility of subclasses. No adapter is needed but standard Java Gateway proxy objects should be generated and invoked. The methods of this class simply manage the connection to the Java Gateway in a fault tolerant way.


Parameters Properties Methods Queries Indices ForeignKeys Triggers
1 4 5


This is a Business Operation class.

%AlertStartTime %ConfigName %ConfigQueueName %LastActionTime
%LastHandledTime %LastReportedError %QuitTask %RequestHeader
%SessionId %SuperSession %WarnedLatest %isShadow
Adapter AdditionalPaths Address AlertGroups
AlertOnError AlertRetryGracePeriod ArchiveIO BusinessPartner
ConnectTimeout DeferResponse FailureTimeout IOLogEntry
InactivityTimeout NoFailWhileDisconnected Port QueueCountAlert
QueueWaitAlert ReplyCodeActions Retry RetryCount
RetryInterval SendSuperSession SuspendMessage ThrottleDelay

%AddToSaveSet %ClassIsLatestVersion %ClassName %ConstructClone
%DispatchClassMethod %DispatchGetModified %DispatchGetProperty %DispatchMethod
%DispatchSetModified %DispatchSetMultidimProperty %DispatchSetProperty %Extends
%GetParameter %IsA %IsModified %New
%NormalizeObject %ObjectModified %OnClose %OnNew
%OriginalNamespace %PackageName %RemoveFromSaveSet %SerializeObject
%SetModified %SuperSessionSet %ValidateObject AdapterName
AssignOneSetting CloseConnection CloseIOLogEntry ConnectJG
DeferResponse EnumerateSettingsClose EnumerateSettingsExecute EnumerateSettingsFetch
GenerateSuperSession GetConnection GetDeferredResponseToken GetMessageList
GetProductionSettingValue GetProductionSettings GetPropertyConnections GetSettings
GetShadowInstance IncludeSuperSession NewIOLogEntry OnError
OnFailureTimeout OnGenerateSuperSession OnGetConnections OnGetReplyAction
OnInit OnKeepalive OnMessage OnMonitor
OnProductionStart OnProductionStop OnTearDown QueueName
SaveIOLogEntry SendAlert SendDeferredResponse SendRequestAsync



• parameter SETTINGS = "Address:Basic,Port:Basic,AdditionalPaths,ConnectTimeout,-ArchiveIO";
Configurable settings for this operation.


• property AdditionalPaths as %String(MAXLEN=32000);
Optional comma-separated list of additional files containing classes you are using via the Java Gateway to be added to the ClassPath already specified in the service if any. Each path element should correspond to individual entry, fully qualified and properly quoted. Please note the delimiter here should be a comma, instead of the platform dependent delimiter used for ClassPath in class EnsLib.JavaGateway.Service.
Example: "C:\JavaWork\test1.jar,C:\JavaTemp\test2.jar".
• property Address as %String [ InitialExpression = "" ];
IP address or name of the machine where the Java Gateway Server is located.
• property ConnectTimeout as %Numeric(MINVAL=0) [ InitialExpression = 5 ];
Timeout in seconds to connect to the Java Gateway Server from InterSystems IRIS.
• property Port as %String [ InitialExpression = "55555" ];
TCP port number for communication between the Java Gateway Server and the proxy classes in InterSystems IRIS.


• method CloseConnection() as %Status
Close the connection from the business operation to the Gateway Server.
• method ConnectJG(ByRef pGateway As EnsLib.JavaGateway.JavaGateway, pTimeout As %Numeric) as %Status
This method is invoked from GetConnection and will either start a new connection or attempt to restore a broken connection. It can be used in case there is a failure during communication with the Java Gateway Server. A status is returned indicating success or failure of the [re]connection.
• method GetConnection(ByRef pGateway As EnsLib.JavaGateway.JavaGateway, pTimeout As %Numeric) as %Status
Ensure we have a valid Java Gateway connection. If not, try to recover. This method returns a private gateway connection object to be used with the proxy classes.
   Set tSC = ..GetConnection(.tGateway) 
   If $$$ISOK(tSC) { 
      // Start using the Java Gateway connection object tGateway 
• method OnInit() as %Status
This user callback method is called just after %OnNew() to initialize the connection among other things. If you need to override this code, invoke the method in the superclass or add to the original code.
• method OnTearDown() as %Status
This user callback method is called just before %OnClose() to disconnect from the .Java Gateway Server. If you need to override this code, invoke the method in the superclass or add to the original code.