getPriorParams

When Writing Java Code for a Data Policy, use the getPriorParams() method in the Parameters object to access field values.

Considerations

• getPriorParams() returns an instance of the Parameters Class.
• When a record is updated, it contains the earlier set of values saved in the DB for this record.
• If a record is updated with no changes to the fields, the prior parameters contains the unchanged values of the fields.
• When a record is added, the prior parameters of the record are empty.
• When retrieving values, you'll typically use the get-methods from the Parameters class that let you specify a default value, in case the record value is null.

Retrieving prior values of account name and status

Parameters preParams = requestParams.getPriorParams();
String accountName = preParams .get("name");
Functions.debug("Previous Account Name: " + accountName); 
Functions.debug("Earlier value for acccount status: " + preParams.get("account_status"));

Retrieving a field of type Float

To retrieve a field of type 'Currency' without having to type-cast the return value, use getFloat().
Use getFloat(String, float) to handle null values.

Float prior_transaction_amount = preParams.getFloat("amount", 0.0f); 
Functions.debug("Prior transaction amount: " + prior_transaction_amount);

Retrieving an integer value

To retrieve a field of type 'Number' without having to type-cast the return value, use getInteger().
Use getInteger(String, int) to handle null values.

int account_num = preParams.getInteger("number", 0);
Functions.debug("Prior account number value: " + account_num);

Retrieving a String value

String account_name = preParams.get("field_name");
Functions.debug("Prior Account name: " + account_name);

Retrieving a text area

String description = preParams.get("description");
Functions.debug("Prior Account description: " + description);

Retrieving a field of type Date

To retrieve a field of type 'Date' without having to type-cast the return value, use getDate().

Date date = preParams.getDate("date_created");
Functions.debug("Prior Account created date: " + date);

Retrieving a field of type Boolean

To retrieve a field of type 'CheckBox' without having to type-cast the return value, use getBoolean().

boolean contract_bool = preParams.getBoolean("contract");
Functions.debug("Prior Account contract: " + contract_bool );