package ua.stu.scplib.attribute;
import java.io.*;
/**
* <p>A concrete class specializing {@link com.pixelmed.dicom.Attribute Attribute} for
* Other Byte (OB) attributes.</p>
*
* <p>Though an instance of this class may be created
* using its constructors, there is also a factory class, {@link com.pixelmed.dicom.AttributeFactory AttributeFactory}.</p>
*
* @see com.pixelmed.dicom.Attribute
* @see com.pixelmed.dicom.AttributeFactory
* @see com.pixelmed.dicom.AttributeList
*
* @author dclunie
*/
public class OtherByteAttribute extends Attribute {
private byte[] values;
/**
* <p>Construct an (empty) attribute.</p>
*
* @param t the tag of the attribute
*/
public OtherByteAttribute(AttributeTag t) {
super(t);
}
/**
* <p>Read an attribute from an input stream.</p>
*
* @param t the tag of the attribute
* @param vl the value length of the attribute
* @param i the input stream
* @exception IOException
* @exception DicomException
*/
public OtherByteAttribute(AttributeTag t,long vl,DicomInputStream i) throws IOException, DicomException {
super(t);
doCommonConstructorStuff(vl,i);
}
/**
* <p>Read an attribute from an input stream.</p>
*
* @param t the tag of the attribute
* @param vl the value length of the attribute
* @param i the input stream
* @exception IOException
* @exception DicomException
*/
public OtherByteAttribute(AttributeTag t,Long vl,DicomInputStream i) throws IOException, DicomException {
super(t);
doCommonConstructorStuff(vl.longValue(),i);
}
/**
* @param vl
* @param i
* @exception IOException
* @exception DicomException
*/
private void doCommonConstructorStuff(long vl,DicomInputStream i) throws IOException, DicomException {
values=null;
valueLength=vl;
if (vl > 0) {
byte[] buffer = new byte[(int)vl];
try {
i.readInsistently(buffer,0,(int)vl);
}
catch (IOException e) {
throw new DicomException("Failed to read value (length "+vl+" dec) in "+ValueRepresentation.getAsString(getVR())+" attribute "+getTag());
}
setValues(buffer);
}
}
/***/
public long getPaddedVL() {
long vl = getVL();
if (vl%2 != 0) ++vl;
return vl;
}
/***/
public String toString(DicomDictionary dictionary) {
StringBuffer str = new StringBuffer();
str.append(super.toString(dictionary));
str.append(" []"); // i.e. don't really dump values ... too many
return str.toString();
}
/**
* @param v
* @exception DicomException
*/
public void setValues(byte[] v) throws DicomException {
values=v;
valueMultiplicity=1; // different from normal value types where VM is size of array
valueLength=v.length;
}
/**
* @exception DicomException
*/
public byte[] getByteValues() throws DicomException { return values; }
/**
* <p>Get the value representation of this attribute (OB).</p>
*
* @return 'O','B' in ASCII as a two byte array; see {@link com.pixelmed.dicom.ValueRepresentation ValueRepresentation}
*/
public byte[] getVR() { return ValueRepresentation.OB; }
}