public static string getValueByPosition(HL7Message message,
SegmentType segmentType,
string position,
int segmentOrder = NEG_ONE)
{
string[] positionMap;
// if there is a period, we are looking through multiple values
if (position.Contains(PERIOD))
{
positionMap = position.Split(PERIOD);
}
else
{
// we are only interested in a field data
positionMap = new string[ONE];
positionMap[ZERO] = position;
}
// associates the field no to the mapped value below
int fieldNo = ZERO;
int componentNo = ZERO;
int subComponentNo = ZERO;
int repetitionNo = ZERO;
// gets the length (and determines the case) based on the map (3.1.1.1)
int mapCount = (position != BLANK) ? positionMap.Length : ZERO;
switch (mapCount)
{
case 1:
// map fields
fieldNo = Convert.ToInt32(positionMap[FIELD_ELEMENT]);
// return value in text only
return(Field.getFieldByPos(message, segmentType, fieldNo, segmentOrder).value);
case 2:
// map fields
fieldNo = Convert.ToInt32(positionMap[FIELD_ELEMENT]);
componentNo = Convert.ToInt32(positionMap[COMPONENT_ELEMENT]);
// set classes
Field c2f = Field.getFieldByPos(message, segmentType, fieldNo);
// return value in text only
return(Component.getComponentByPos(c2f, componentNo).value);
case 3:
// map fields
fieldNo = Convert.ToInt32(positionMap[FIELD_ELEMENT]);
componentNo = Convert.ToInt32(positionMap[COMPONENT_ELEMENT]);
subComponentNo = Convert.ToInt32(positionMap[SUB_COMPONENT_ELEMENT]);
// set classes
Field c3f = Field.getFieldByPos(message, segmentType, fieldNo);
Component c3c = Component.getComponentByPos(c3f, componentNo);
// return value in text only
return(SubComponent.getSubComponentByPos(c3c, subComponentNo).value);
case 4:
// map fields
fieldNo = Convert.ToInt32(positionMap[FIELD_ELEMENT]);
componentNo = Convert.ToInt32(positionMap[COMPONENT_ELEMENT]);
subComponentNo = Convert.ToInt32(positionMap[SUB_COMPONENT_ELEMENT]);
repetitionNo = Convert.ToInt32(positionMap[REPETITION_ELEMENT]);
// set classes
Field c4f = Field.getFieldByPos(message, segmentType, fieldNo);
Component c4c = Component.getComponentByPos(c4f, componentNo);
SubComponent c4sc = SubComponent.getSubComponentByPos(c4c, subComponentNo);
// return value in text only
return(Repetition.getRepetitionByPos(c4sc, repetitionNo).value);
default:
// cant' find it
return(BLANK);
}
}
