/**
* Adjusts the field list so that only the selected fields are read.
*
* @param readFunction
*/
private void setFieldList(JCoFunction readFunction) {
int length = 0;
JCoTable fields = readFunction.getTableParameterList().getTable("FIELDS"); // $NON-NLS-1$
fields.clear();
if (selectedFields.isEmpty()) {
for (final ITableField field : structure.getFieldList()) {
length += field.getLength();
fields.appendRow();
fields.setValue("FIELDNAME", field.getFieldName()); // $NON-NLS-1$
}
} else {
for (final String field : selectedFields) {
try {
length += structure.getField(field).getLength();
fields.appendRow();
fields.setValue("FIELDNAME", field); // $NON-NLS-1$
} catch (FieldNotFoundException e) {
throw new IllegalArgumentException(
MessageFormat.format(Messages.TableReader_UnknownField, field), e);
}
}
}
if (length > 512) {
throw new IllegalArgumentException(Messages.TableReader_ResultTooLong);
}
}
/**
* Adds a field to the list of fields to retrieve.
*
* @param field the descriptor of the field to add
* @throws FieldNotFoundException
*/
public void addField(ITableField field) throws FieldNotFoundException {
structure.getField(field.getFieldName()); // to ensure that the field exists
selectedFields.add(field.getFieldName());
}