Example: Inserting and replacing price rule

Use the Data Load utility to load price rule data into the PRICERULE table. The Data Load utility provides two modes for loading price rule: insert and replace. Use the insert modes for a new price rule. Use the replace mode to update an existing price rule.

Do not use the insert mode if a price rule with the same price rule name, or if a uniqueId exists in database. In insert mode, if a price rule with the same price rule name or uniqueId exists in database, the record is not inserted. In the replace mode, if the price rule name or the uniqueId in the load file does not exist in database, the price rule is inserted.

This example uses a CSV file to demonstrate how to insert, replace, or delete your data. We can also create and use an XML formatted file to insert, replace, or delete your data. If you choose to create and use an XML formatted file, ensure that your XML elements use the same names as are used for CSV column names.

Prerequisites

Before you run this example, ensure that the following prerequisites are fulfilled:

• Make sure that the store exists.

CSV file with sample price rule data

In this example, the data source is a CSV file named PriceRule.csv. The file contains sample price rule data. Each column is delimited by a comma.

Formatted CSV file with column headings

Name	Description	State	Dependency	Format
PriceRule001	This price rule is just for UT	1	TRUE	1
PriceRule002	This price rule is just for UT	0	FALSE	0

firstLineIsHeader

true

Indicates that the first line in the CSV file is treated as column name data, and it is not inserted into the database.

false

Indicates that the first line in the CSV file is data to be read and inserted into the database.

CSV column and XML element definitions

The column order is defined in the price rule data load configuration file. See the number attribute in the <_config:Data> element.

Name

(Required, String) The name of the price rule, the combination of name and storeIdentifier in the business context must be unique.

Description

(String) The description of the price rule.

State

(Required, Integer) The current state of the price rule. Valid values include: 0 = Draft, 1 = Ready, 2=Suspended, 3=Closed.

Dependency

(Required, Boolean) The Boolean flag to indicate whether the price rule is dependent or not.

Format

(Required, Integer) The type of the price rule. Valid values include: 0 = internal, 1 = external. Default is 0.

Other optional fields not included in the example are:

UniqueID

(String) The reference number of the price rule. If this is provided, the PRICERULE.PRICERULE_ID is populated with the provided value. Or, the PRICERULE.PRICERULE_ID is one generated unique number.

CreatedTime

(Timestamp) The created time of the price rule.

LastUpdateTime

(Timestamp) The last update time of the price rule.

Delete

(String) Indicates whether to delete this record. This field takes effect when dataLoadMode is "replace". If the value of this field equals to deleteValue, the corresponding record is deleted. The default deleteValue is 1. The deleteValue can be configured under <DataMapping> element in BusinessObjectConfigFile.

Field 1

(String) Extension that is filed for String value, the maximum length is 254.

Field 2

(String) Extension that is filed for String value, the maximum length is 254.

Field 3

(String) Extension that is filed for String value, the maximum length is 254.

Business context data

The following code snippet from the wc-dataload-env.xml configuration file provides the business context data necessary for loading the price rule data:

<_config:BusinessContext 
   storeIdentifier="AuroraESite" 
   catalogIdentifier="Extended Sites Catalog Asset Store" 
   languageId="-1" 
   currency="USD"> 
</_config:BusinessContext>

storeIdentifier

String: The identifier of the store to which this item belongs, such as AuroraESite. It is used if CSV file does not provide this information. The StoreIdentifier is used to retrieve the storeID.

catalogIdentifier

String: The catalog identifier. This parameter is used when the catalog identifier is not provided in the CSV file. If the catalogIdentifier is provided in the CSV file, it is used.

Mapping data

The following snippet from the sample configuration file demonstrates how to map each column of data in the source CSV file to a value.

<_config:DataReader
  className="com.ibm.commerce.foundation.dataload.datareader.CSVReader"firstLineIsHeader="true"> 
  <_config:Data>
    <_config:column number="1" name="UniqueID" />
    <_config:column number="2" name="Name" />
    <_config:column number="3" name="Description" />
    <_config:column number="4" name="State" />
    <_config:column number="5" name="Dependent" />
    <_config:column number="6" name="Format" />
    <_config:column number="7" name="Version" />
    <_config:column number="8" name="Field1" />
    <_config:column number="9" name="Field2" />
    <_config:column number="10" name="Field3" />
    <_config:column number="11" name="CreatedTime"/>
    <_config:column number="12" name="LastUpdateTime" />
    <_config:column number="13" name="Delete" />
  </_config:Data>
</_config:DataReader>

The following snippet from the sample configuration file demonstrates how to map each column of the data in the CSV file to a business object logical schema path. The attribute 'value' represents the name of a column of the CSV file, which is defined in the preceding configuration snippet. Each column in the CSV file must have a mapping to the logical schema path. If the optional fields are present in the CSV file, the mapping for them must be added.

<_config:DataMapping>
  <_config:mapping xpath="PriceRuleIdentifier/UniqueID" value="UniqueID" />
  <_config:mapping xpath="PriceRuleIdentifier/ExternalIdentifier/Name" value="Name" />
  <_config:mapping xpath="Description" value="Description" />
  <_config:mapping xpath="State" value="State" />
  <_config:mapping xpath="Dependent" value="Dependent" />
  <_config:mapping xpath="Format" value="Format" />
  <_config:mapping xpath="Version" value="Version" />
  <_config:mapping xpath="CreatedTime" value="CreatedTime"/>
  <_config:mapping xpath="LastUpdateTime" value="LastUpdateTime"/>
  <_config:mapping xpath="UserData/UserDataField[0]/FIELD1" value="Field1" />
  <_config:mapping xpath="UserData/UserDataField[0]/FIELD2" value="Field2" />
  <_config:mapping xpath="UserData/UserDataField[0]/FIELD3" value="Field3" />
  <_config:mapping xpath="" value="Delete" deleteValue="1" />
</_config:DataMapping>

Business object mediator

The mediator class name is com.ibm.commerce.price.dataload.mediator.PriceRuleMediator. The corresponding logical schema is defined in PriceRule.xsd.

Note: When we use a mediator that is provided with WebSphere Commerce with the Data Load utility, the utility assumes that we are loading data for all columns for a business object. To update the data in only specific columns, configure a column exclusion list for the load process. A column exclusion list causes the Data Load utility to ignore specific columns during the load operation. If you do not use a column exclusion list, the utility updates all columns in the row of a database table row when the utility updates the row. If no value is set in the input file, the utility can replace the existing column value with a default value or set the value to be null. See Configure a column exclusion list.