tAccessOutputBulk - 6.1

Talend Components Reference Guide

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6.1
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Talend Big Data
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task
Data Governance
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Design and Development
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Talend Studio

tAccessOutputBulk properties

The tAccessOutputBulk and tAccessBulkExec components are generally used together to output data to a delimited file and then to perform various actions on the file in an Access database, in a two step process. These two steps are fused together in the tAccessOutputBulkExec component, detailed in a separate section. The advantage of using a two step process is that it makes it possible to carry out transformations on the data before loading it in the database.

Component family

Databases/Access

 

Function

tAccessOutputBulk writes a delimited file.

Purpose

tAccessOutputBulk prepares the file which contains the data used to feed the Access database.

Basic settings

Property type

Either Built-in or Repository.

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

 

 

Built-in: No property data stored centrally.

 

 

Repository: Select the repository file in which the properties are stored. The fields that follow are completed automatically using the data retrieved.

 

File Name

Name and path to the file to be created and/or the variable to be used.

For further information about how to define and use a variable in a Job, see Talend Studio User Guide.

 

Create directory if not exists

Select this check box to create the as yet non-existant file directory that specified in the File name field.

 

Append

Select this check box to add any new rows to the end of the file.

 

Schema and Edit schema

A schema is a row description. It defines the number of fields (columns) 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.

 

 

Built-In: You create and store the schema locally for this component only. Related topic: see Talend Studio User Guide.

 

 

Repository: You have already created the schema and stored it in the Repository. You can reuse it in various projects and Job designs. Related topic: see Talend Studio User Guide.

When the schema to be reused has default values that are integers or functions, ensure that these default values are not enclosed within quotation marks. If they are, you must remove the quotation marks manually.

For more details, see https://help.talend.com/display/KB/Verifying+default+values+in+a+retrieved+schema.

  

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.

Advanced settings

Include header

Select this check box to include the column header in the file.

 

Encoding

Select the encoding from the list or select Custom and define it manually. This field is compulsory for DB data handling.

 

tStat Catcher Statistics

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

Global Variables 

NB_LINE: the number of rows processed. This is an After variable and it returns an integer.

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 is to be used along with tAccessBulkExec component. Used together they offer gains in performance while feeding an Access database.

Log4j

If you are using a subscription-based version of the Studio, 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

If you are using an ODBC driver, you need to work with Java 7, and make sure that your JVM and ODBC versions match up: both 64-bit or 32-bit.

When working with Java 8, this component supports only the General collation mode of Access.

Related scenarios

For use cases in relation with tAccessOutputBulk, see the following scenarios: