/*
* Get the contents of an input dataset element by tag,
* handling CTP elements specially.
* @param tag the element tag
* @return the value of the specified element in the current dataset,
* @throws Exception if the element is missing.
*/
public String contents(int tag) throws Exception {
SpecificCharacterSet cs = inDS.getSpecificCharacterSet();
// Handle FileMetaInfo references
if ((inFMI != null) && ((tag & 0x7FFFFFFF) < 0x80000)) {
DcmElement el = inFMI.get(tag);
if (el == null) throw new Exception(Tags.toString(tag) + " missing");
return el.getString(cs);
}
// Not FMI, handle DataSet references
boolean ctp = false;
if (((tag & 0x00010000) != 0) && ((tag & 0x0000ff00) != 0)) {
int blk = (tag & 0xffff0000) | ((tag & 0x0000ff00) >> 8);
try {
ctp = inDS.getString(blk).equals("CTP");
} catch (Exception notCTP) {
ctp = false;
}
}
DcmElement el = inDS.get(tag);
if (el == null) throw new Exception(Tags.toString(tag) + " missing");
if (ctp) return new String(inDS.getByteBuffer(tag).array());
String[] s = el.getStrings(cs);
if (s.length == 1) return s[0];
if (s.length == 0) return "";
StringBuffer sb = new StringBuffer(s[0]);
for (int i = 1; i < s.length; i++) {
sb.append("\\" + s[i]);
}
return sb.toString();
}
public InstanceModel(Dataset ds) {
super(ds);
ds.setPrivateCreatorID(PrivateTags.CreatorID);
ByteBuffer bb = ds.getByteBuffer(PrivateTags.InstancePk);
this.pk = bb == null ? -1 : Convert.toLong(bb.array());
}