You can create a new data type by extending a predefined data type.
1 In the Enterprise Explorer pane, right-click the type.xml file, and then click Open with > UDTT Transaction Editor.
The Transaction editor opens with the four predefined data types displayed in the Type panel.
2 Right-click in the Type panel of the Transaction editor, and then click New Child > Field Type.
3 In the Id field of the Detailed Information panel, enter a name for the data type. Press Enter.
4 Specify a descriptor for the data type.
▪ In the Type panel, right-click the new data type, and then click New Child > descriptor.
The Type Descriptor Creation Dialog window opens.
▪ In the Type Descriptor Creation Dialog window, select Choose Type Descriptor from local classpath, and then click Browse.
The Select Class window opens.
▪ In the Select Class window, select com.ibm.btt.base.types.impl.SimplePropertyDescriptor. Click OK. In the Type Descriptor Creation Dialog window, click OK.
▪ In the Id field of the Detailed Information panel, enter typeDefault.
▪ In the RefType field of the Detailed Information panel, click the Browse icon to select a predefined type. Do not change or enter values for all the other fields in the Detailed Information panel.
5 Specify a converter for the new data type.
▪ In the Type panel, right-click the descriptor of the data type you are creating, and then click New Child > Convertor.
The Type Convertor Creation Dialog window opens.
▪ In the Type Convertor Creation Dialog window, select Choose Type Convertor from local classpath, and then click Browse.
The Select Class window opens.
▪ In the Select Class window, select one of the following classes, and then click OK.
If the type is a subset of the String type, select com.ibm.btt.base.types.impl.StringConverter.
If the type is a subset of the Date type, select com.ibm.btt.base.types.impl.DateConverter.
If the type is a subset of the Number type, select com.ibm.btt.base.types.impl.NumberConverter.
If the type is a subset of the Currency type, select com.ibm.btt.base.types.impl.CurrencyConverter.
▪ In the ConvTypes field of the Detailed Information panel, enter default.
6 Create conversion parameters for the data type.
▪ Right-click the converter of the new data type, and then click New Child > param.
▪ In the Id field of the Detailed Information panel, enter a name for the converter.
▪ In the Value field, specify the value to which the typed data should be converted.
7 Specify a validator for the new data type.
▪ In the Type panel, right-click the descriptor of the data type you are creating, and then click New Child > Validator.
The Type Validator Creation Dialog window opens.
▪ In the Type Validator Creation Dialog window, select Choose Type Convertor from local classpath, and then click Browse.
The Select Class window opens.
▪ In the Select Class window, select one of the following classes, and then click OK.
If the type is a subset of the String type, select com.ibm.btt.base.types.impl.StringValidator.
If the type is a subset of the Date type, select com.ibm.btt.base.types.impl.DateValidator.
If the type is a subset of the Number type, select com.ibm.btt.base.types.impl.NumberValidator.
If the type is a subset of the Currency type, select com.ibm.btt.base.types.impl.CurrencyValidator.
8 Create validation parameters for the data type.
▪ Right-click the validator of the new data type, and then click New Child > param.
▪ Specify values in the Id field and the Value field.
