/**
* @see java.io.Externalizable#writeExternal
* @exception IOException Thrown on write error
*/
public void writeExternal(ObjectOutput out) throws IOException {
FormatableHashtable fh = new FormatableHashtable();
fh.putBoolean("isUnique", isUnique);
fh.putInt("keyLength", baseColumnPositions.length);
for (int i = 0; i < baseColumnPositions.length; i++) {
fh.putInt("bcp" + i, baseColumnPositions[i]);
fh.putBoolean("isAsc" + i, isAscending[i]);
}
fh.putInt("orderedColumns", numberOfOrderedColumns);
fh.put("indexType", indexType);
// write the new attribut older versions will simply ignore it
fh.putBoolean("isUniqueWithDuplicateNulls", isUniqueWithDuplicateNulls);
out.writeObject(fh);
}
/**
* @see java.io.Externalizable#readExternal
* @exception IOException Thrown on read error
*/
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
FormatableHashtable fh = (FormatableHashtable) in.readObject();
isUnique = fh.getBoolean("isUnique");
int bcpLength = fh.getInt("keyLength");
baseColumnPositions = new int[bcpLength];
isAscending = new boolean[bcpLength];
for (int i = 0; i < bcpLength; i++) {
baseColumnPositions[i] = fh.getInt("bcp" + i);
isAscending[i] = fh.getBoolean("isAsc" + i);
}
numberOfOrderedColumns = fh.getInt("orderedColumns");
indexType = (String) fh.get("indexType");
// isUniqueWithDuplicateNulls attribute won't be present if the index
// was created in older versions
if (fh.containsKey("isUniqueWithDuplicateNulls"))
isUniqueWithDuplicateNulls = fh.getBoolean("isUniqueWithDuplicateNulls");
else isUniqueWithDuplicateNulls = false;
}