July 30, 2023

tDotNETInstantiate – Docs for ESB 7.x


Invokes the constructor of a .NET object that is intended for later

tDotNETInstantiate instantiates
an object in the .NET for later reuse.

tDotNETInstantiate Standard properties

These properties are used to configure tDotNETInstantiate running in the Standard Job framework.

The Standard
tDotNETInstantiate component belongs to the DotNET family.

The component in this framework is available in all Talend

Basic settings

Dll to load Type in the path, or browse to the DLL library containing the classe(es) of
interest or enter the assembly’s name to be used. For example, System.Data, Version=, Culture=neutral,
for an OleDb assembly.
 Fully qualified class name(i.e.
Enter a fully qualified name for the class of interest.
Value(s) to pass to the constructor Click the plus button to add one or more values to be passed to the
constructor for the object. Or, leave this table empty to call a default
constructor for the object.

The valid value(s) should be the
parameters required by the class to be used.

Advanced settings

tStatCatcher Statistics Select this check box to collect log data at the component level.

Global Variables

Global Variables

INSTANCE: the instance of a .NET object. This is an After
variable and it returns an object.

ERROR_MESSAGE: the error message generated by the
component when an error occurs. This is an After variable and it returns a string. This
variable functions only if the Die on error check box is
cleared, if the component has this check box.

A Flow variable functions during the execution of a component while an After variable
functions after the execution of the component.

To fill up a field or expression with a variable, press Ctrl +
to access the variable list and choose the variable to use from it.

For further information about variables, see
Talend Studio

User Guide.


Usage rule This component can be used as a start component in a flow or an independent

To use this component, you must first install the
runtime DLLs, for example janet-win32.dll for Windows
32-bit version and janet-win64.dll for Windows 64-bit
version, from the corresponding Microsoft Visual C++ Redistributable Package.
This allows you to avoid errors like the UnsatisfiedLinkError on dependent DLL.

So ensure
that the runtime and all of the other DLLs which the DLL to be called depends
on are installed and their versions are consistent among one another.

Note: The required DLLs can be installed in the System32 folder or in the bin folder of the Java
runtime to be used. If you need to export a Job using this component to run it
outside the Studio, you have to specify the runtime container of interest by
setting the -Djava.library.path argument accordingly.
For users of
solutions with ESB, to run a Job using this component in ESB
Runtime, you need to copy the runtime DLLs to the %KARAF_HOME%/lib/wrapper/ directory.

Related scenario

For a related scenario, see Utilizing .NET in Talend.

Document get from Talend https://help.talend.com
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