tSchemaComplianceCheck Properties - 6.1

Talend Components Reference Guide

EnrichVersion
6.1
EnrichProdName
Talend Big Data
Talend Big Data Platform
Talend Data Fabric
Talend Data Integration
Talend Data Management Platform
Talend Data Services Platform
Talend ESB
Talend MDM Platform
Talend Open Studio for Big Data
Talend Open Studio for Data Integration
Talend Open Studio for Data Quality
Talend Open Studio for ESB
Talend Open Studio for MDM
Talend Real-Time Big Data Platform
task
Data Governance
Data Quality and Preparation
Design and Development
EnrichPlatform
Talend Studio

Component family

Data Quality

 

Basic settings

Base 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.

It describes the structure and nature of your data to be processed as it is.

 

 

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.

 

Check all columns from schema

Select this option to carry out all checks on all columns against the base schema.

 

Custom defined

Select this option to carry out particular checks on particular columns. When this option is selected, the Checked Columns table shows.

 

Checked Columns

In this table, define what checks are to be carried out on which columns.

 

 

Column: Displays the columns names.

 

 

Type: Select the type of data each column is supposed to contain. This validation is mandatory for all columns.

 

 

Date pattern: Define the expected date format for each column with the data type of Date.

 

 

Nullable: Select the check box in an individual column to define the column to be nullable, that is, to allow empty rows in this column to go to the output flow regardless of the base schema definition. To define all columns to be nullable, select the check box in the table header.

 

 

Undefined or empty: Select the check box in an individual column to reject empty rows in this column while the column is not nullable in the base schema definition. To carry out this verification on all the columns, select the check box in the table header.

 

 

Max length: Select the check box in an individual column to verify the data length of the column against the length definition of the base schema. To carry out this verification on all the columns, select the check box in the table header.

 

Use another schema for compliance check

Define a reference schema as you expect the data to be, in order to reject the non-compliant data.

It can be restrictive on data type, null values, and/or length.

 

Trim the excess content of column when length checking chosen and the length is greater than defined length

With any of the three modes of tSchemaComplianceCheck, select this check box to truncate the data that exceeds the length specified rather than reject it.

Note

This option is applicable only on data of String type.

Advanced settings

Use Fastest Date Check

Select this check box to perform a fast date format check using the TalendDate.isDate() method of the TalendDate system routine if Date pattern is not defined. For more information about routines, see Talend Studio User Guide.

 

Ignore TimeZone when Check Date

Select this check box to ignore the time zone setup upon date check.

Not available when the Check all columns from schema mode is selected.

 

Treat all empty string as NULL

Select this check box to treat any empty fields in any columns as null values, instead of empty strings.

By default, this check box is selected. When it is cleared, the Choose Column(s) table shows to let you select individual columns.

 

tStatCatcher Statistics

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

Global Variables

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 an intermediary step in the flow allowing to exclude from the main flow the non-compliant data. This component cannot be a start component as it requires an input flow. It also requires at least one output component to gather the validated flow, and possibly a second output component for rejected data using Rejects link. For more information, see Talend Studio User Guide.