August 17, 2023

tFileInputMail – Docs for ESB 5.x

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tFileInputMail

tFileInputMail.png

tFileInputMail properties

Component family

File/Input

  

Function

tFileInputMail reads the header
and content parts of a defined MIME or MSG email file.

Purpose

This component helps to extract standard key data from an email
file.

Basic settings

File Name

Specify the email file to read and extract data from.

 

Schema and Edit
Schema

A schema is a row description, it defines the number of fields to
be processed and passed on to the next component. The schema is
either Built-in or stored remotely
in the Repository.

Since version 5.6, both the Built-In mode and the Repository mode are
available in any of the Talend solutions.

Click Edit schema to make changes to the schema. If the
current schema is of the Repository type, three options are
available:

  • View schema: choose this option to view the
    schema only.

  • Change to built-in property: choose this option
    to change the schema to Built-in for local
    changes.

  • Update repository connection: choose this option to change
    the schema stored in the repository and decide whether to propagate the changes to
    all the Jobs upon completion. If you just want to propagate the changes to the
    current Job, you can select No upon completion and
    choose this schema metadata again in the [Repository
    Content]     window.

 

 

Built-in: The schema will be
created and stored locally for this component only. Related topic:
see Talend Studio
User Guide.

 

 

Repository: The schema already
exists and is stored in the Repository, hence can be reused in
various projects and Job flowcharts. Related topic: see
Talend Studio
User Guide.

 

Mail type

Select a type of email from the drop-down list, either MIME or MSG.

 

Attachment export directory

Specify the directory to which you want to export email
attachments.

 

Mail parts

Specify what to extract from the defined MIME email file for each
schema column.

  • Column: The Column cells are automatically
    filled with the column name defined in the schema.

  • Mail part: Type in the
    label of the header or body part to be extracted from the
    defined email.

  • Multi value: Select the
    check box next to the name of columns made of multi-value
    fields.

  • Separator: Enter a value
    separator for multi-value fields.

This table appears only when MIME
is selected from the Mail type
drop-down list.

 

MSG Mail parts

Specify what to extract from the defined MSG email file for each
schema column.

  • Column: The Column cells are automatically
    filled with the column name defined in the schema.

  • Mail part: Click each
    cell and then select an email part to be extracted.

This table appears only when MSG
is selected from the Mail type
drop-down list.

 

Die on error

Select this check box to stop the execution of the Job when an
error occurs. Clear the check box to skip the row on error and
complete the process for error-free rows.

Advanced settings

tStatCatcher Statistics

Select this check box to gather the Job processing metadata at the
Job level as well as at each component level.

Global Variables

EXPORTED_FILE_PATH: the directory to export mail
attachment. This is a Flow variable and it returns a string.

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 +
Space to access the variable list and choose the variable to use from it.

For further information about variables, see Talend Studio
User Guide.

Usage

This component handles flow of data therefore it requires output.
It is defined as an intermediary step.

Log4j

The activity of this component can be logged using the log4j feature. For more information on this feature, see Talend Studio User
Guide.

For more information on the log4j logging levels, see the Apache documentation at http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/Level.html.

Limitation

n/a

Scenario: Extracting key fields from an email

This Java scenario describes a two-component Job that extracts some key standard
fields and displays the values on the Run
console.

Use_Case_tFileInputMail1.png

  1. Drop a tFileInputMail and a tLogRow component from the Palette to the design workspace.

  2. Connect the two components together using a Main
    Row     link.

  3. Double-click tFileInputMail to display its
    Basic settings view and define the
    component properties.

    Use_Case_tFileInputMail2.png

  4. Click the three-dot button next to the File
    Name     field and browse to the mail file to be processed.

  5. Set schema type to Built-in and click the
    three-dot button next to Edit schema to open a
    dialog box where you can define the schema including all columns you want to
    retrieve on your output.

  6. Click the plus button in the dialog box to add as many columns as you want to
    include in the output flow. In this example, the schema has four columns:
    Date, Author,
    Object and Status.

  7. Once the schema is defined, click OK to close
    the dialog box and propagate the schema into the Mail
    parts     table.

  8. Click the three-dot button next to Attachment export directory and browse to
    the directory in which you want to export email attachments, if any.

  9. In the Mail part column of the Mail parts table, type in the actual header or body
    standard keys that will be used to retrieve the values to be displayed.

  10. Select the Multi Value check box next to any
    of the standard keys if more than one value for the relative standard key is
    present in the input file.

  11. If needed, define a separator for the different values of the relative
    standard key in the Separator field.

  12. Double-click tLogRow to display its Basic settings view and define the component
    properties in order for the values to be separated by a carriage return. On
    Windows OS, type in
    between double quotes.

  13. Save your Job and press F6 to execute it and
    display the output flow on the console.

    Use_Case_tFileInputMail3.png

The header key values are extracted as defined in the Mail
parts table. Mail reception date, author, subject and status are
displayed on the console.

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