July 30, 2023

tAccessBulkExec – Docs for ESB 7.x

tAccessBulkExec

Offers gains in performance when carrying out Insert operations in an Access
database.

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.

This component executes an Insert action on the data
provided.

tAccessBulkExec Standard properties

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

The Standard
tAccessBulkExec component belongs to the Databases family.

The component in this framework is available in all Talend
products
.

Note: This component is a specific version of a dynamic database
connector. The properties related to database settings vary depending on your database
type selection. For more information about dynamic database connectors, see Dynamic database components.

Basic settings

Database

Select a type of database from the list and click
Apply.

Property type

Either Built-in or
Repository
.

 

Built-in: No property data is
stored centrally.

 

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

Use an existing connection

Select this check box and in the Component List click the relevant connection component to
reuse the connection details you already defined.

Note: When a Job contains the parent Job and the child Job, if you
need to share an existing connection between the two levels, for example, to share the
connection created by the parent Job with the child Job, you have to:

  1. In the parent level, register the database connection
    to be shared in the Basic
    settings
    view of the connection component which creates that very database
    connection.

  2. In the child level, use a dedicated connection
    component to read that registered database connection.

For an example about how to share a database connection
across Job levels, see

Talend Studio
User Guide
.

DB version

Select the version of your database.

Database

Type in the directory where your database is stored.

Username and
Password

DB user authentication data.

To enter the password, click the […] button next to the
password field, and then in the pop-up dialog box enter the password between double quotes
and click OK to save the settings.

Action on table

On the table defined, you can perform one of the following
operations:

None: No operation is carried
out.

Drop and create table: The table is
removed and created again.

Create table: The table does not
exist and gets created.

Create table if not exists: The
table is created if it does not exist.

Drop table if exists and create:
The table is removed if it already exists and created again.

Clear table: The table content is
deleted.

Table

Name of the table to be written. Note that only one table can be
written at a time and that the table must exist already for the
insert operation to succeed.

Local filename

Browse to the delimited file to be loaded into your
database.

Action on data

On the data of the table defined, you can perform:

Insert: Add new entries to the
table.

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. When you create a Spark
Job, avoid the reserved word line when naming the
fields.

 

Built-in: The schema is 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. Related
topic: see
Talend Studio User
Guide
.

 

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

Additional JDBC parameters

Specify additional connection properties for the DB connection you
are creating. This option is not available if you have selected the
Use an existing connection
check box in the Basic
settings.

Include header

Select this check box to include the column header.

tStatCatcher Statistics

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

Usage

Usage rule

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

Dynamic settings

Click the [+] button to add a row in the table
and fill the Code field with a context
variable to choose your database connection dynamically from multiple
connections planned in your Job. This feature is useful when you need to
access database tables having the same data structure but in different
databases, especially when you are working in an environment where you
cannot change your Job settings, for example, when your Job has to be
deployed and executed independent of Talend Studio.

The Dynamic settings table is
available only when the Use an existing
connection
check box is selected in the Basic settings view. Once a dynamic parameter is
defined, the Component List box in the
Basic settings view becomes unusable.

For examples on using dynamic parameters, see Reading data from databases through context-based dynamic connections and Reading data from different MySQL databases using dynamically loaded connection parameters. For more information on Dynamic
settings
and context variables, see Talend Studio
User Guide.

Limitation

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

Related scenarios

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


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