protected IData extractIData(IData data, String key, boolean mandatory, IData defaultValue)
throws ServiceOutputException {
IDataCursor cur = data.getCursor();
try {
IData result = IDataUtil.getIData(cur, key);
if (result == null) {
result = defaultValue;
}
if (mandatory && result == null) {
throw new ServiceOutputException(this, String.format("missing required IData in %s", key));
}
return result;
} finally {
cur.destroy();
}
}
protected <T> T extractSingleValue(
IData data, ValueConverter<?, T> converter, String key, boolean mandatory, T defaultValue)
throws ServiceOutputException {
T result = defaultValue;
IDataCursor cur = data.getCursor();
try {
Object value = IDataUtil.get(cur, key);
if (value != null) {
if (converter.canConvert(value)) {
result = converter.convert(value);
} else {
throw new ServiceOutputException(
this, "can not convert " + key + " to " + converter.getResultType());
}
}
if (result == null && mandatory) {
throw new ServiceOutputException(this, String.format("missing required %s", key));
}
} finally {
cur.destroy();
}
return result;
}