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私は、次のラバDataWeave変換があります。MuleSoft DataWeaveチェックXMLのFILDが存在するかどうかを
([]) when (payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments =="") otherwise
{
Id: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#[email protected] as :string,
Date: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#Date,
Time: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#Time,
Cancel: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#Cancel as :string,
VisitType: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#VisitType,
VisitTypeID: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#VisitTypeID as :string,
Duration: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#Duration as :string,
Confirm: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#Confirm as :string,
Providers: {
Provider: {
Id: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#Providers.ns0#[email protected] as :string,
Name: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#Providers.ns0#[email protected],
Department: {
Id: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#Providers.ns0#Provider.ns0#[email protected] as :string,
Name: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#Providers.ns0#Provider.ns0#[email protected],
Center: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#Providers.ns0#Provider.ns0#[email protected],
DepartmentDirections: "" when payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#Providers.ns0#Provider.ns0#Department.ns0#DepartmentDirections == null otherwise payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#Providers.ns0#Provider.ns0#Department.ns0#DepartmentDirections
}
}
},
PatientInstructions: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#PatientInstructions,
Copay: payload.ns0#GetFutureAppointmentsResponse.ns0#Appointments.ns0#Appointment.ns0#Copay as :string
}
すべてがフィールド「DepartmentDirectionsは」常にXMLで渡されないことを除いて動作しますが。だから私はこのフィールドを追加するときに私のwebserviceは何も返しませんが、私はそれが動作する削除します。フィールドがそこにあるかもしれないし、そうでないかもしれないので、私はnullをチェックすることが助けに行くとは思わない（シナリオでは、フィールドが動作していないということではない）。それを割り当てる前に、実際のフィールドが存在するかどうか（値ではない）を簡単にチェックする方法はありますか？
直接あなたの質問に関連しますが、自分に好意を行うと％VAR（payload.ns0＃GetFutureAppointmentsResponseにそのほとんどを引き出していません。 ns0＃Appointments.ns0＃アポイントメントピース）。 –