/** @todo test skips some equal rows because it relies on getPos() */
int compareRowForInsert(Row newRow, Row existingRow) {
// only allow new inserts over rows deleted by the same session
if (newRow.rowAction != null && !canRead(newRow.rowAction.session, existingRow)) {
return newRow.getPos() - existingRow.getPos();
}
return 0;
}
void deleteRows(Object[] list, int start, int limit, boolean commit) {
for (int i = start; i < limit; i++) {
RowAction rowact = (RowAction) list[i];
if (rowact.type == RowActionBase.ACTION_DELETE_FINAL) {
try {
rowact.type = RowActionBase.ACTION_DELETE_COMMITTED;
PersistentStore store = rowact.session.sessionData.getRowStore(rowact.table);
Row row = rowact.memoryRow;
if (row == null) {
row = (Row) store.get(rowact.getPos(), false);
}
if (commit && rowact.table.hasLobColumn) {
Object[] data = row.getData();
rowact.session.sessionData.removeLobUsageCount(rowact.table, data);
}
store.delete(row);
store.remove(row.getPos());
} catch (HsqlException e) {
// throw unexpectedException(e.getMessage());
}
}
}
}
/**
* Compare two rows of the table for inserting rows into unique indexes
*
* @param a data
* @param b data
* @return comparison result, -1,0,+1
* @throws HsqlException
*/
private int compareRowUnique(Session session, Row left, Row right) throws HsqlException {
Object[] a = left.getData();
Object[] b = right.getData();
int j = 0;
boolean hasNull = false;
for (; j < colIndex.length; j++) {
Object currentvalue = a[colIndex[j]];
int i = Column.compare(collation, currentvalue, b[colIndex[j]], colType[j]);
if (i != 0) {
return i;
}
if (currentvalue == null) {
hasNull = true;
}
}
if (isUnique && !useRowId && !hasNull) {
return 0;
}
for (j = 0; j < pkCols.length; j++) {
Object currentvalue = a[pkCols[j]];
int i = Column.compare(collation, currentvalue, b[pkCols[j]], pkTypes[j]);
if (i != 0) {
return i;
}
}
if (useRowId) {
int difference = left.getPos() - right.getPos();
if (difference < 0) {
difference = -1;
} else if (difference > 0) {
difference = 1;
}
return difference;
}
return 0;
}
public long getRowId() {
return currentRow == null
? 0
: ((long) rangeVar.rangeTable.getId() << 32) + ((long) currentRow.getPos());
}