public static Iterator<Record> create(BPTreeNode node, Record minRec, Record maxRec) { if ( minRec != null && maxRec != null && Record.keyGE(minRec, maxRec) ) return Iter.nullIter(); return new BPTreeRangeIterator(node, minRec, maxRec) ; }
if ( minRec != null && maxRec != null && Record.keyGE(minRec, maxRec) ) return null ;//throw new IllegalArgumentException("minRec >= maxRec: "+minRec+" >= "+maxRec ) ;
@Override public boolean hasNext() { if ( slot != null ) return true ; if ( nextIdx < 0 ) return false ; if ( nextIdx >= rBuff.size() ) { finish() ; return false ; } slot = rBuff.get(nextIdx) ; if ( maxRec != null && Record.keyGE(slot, maxRec) ) { // Finished - now to large finish() ; return false ; } nextIdx ++ ; return true ; }
@Test public void record3() { Record r1 = intToRecord(1000, RecLen) ; Record r2 = intToRecord(0, RecLen) ; assertFalse(Record.keyEQ(r1,r2)) ; assertTrue(Record.keyGE(r1,r2)) ; assertFalse(Record.keyLE(r1,r2)) ; assertFalse(Record.keyLT(r1,r2)) ; assertTrue(Record.keyGT(r1,r2)) ; } }
@Test public void record1() { Record r1 = intToRecord(1, RecLen) ; Record r2 = intToRecord(1, RecLen) ; assertTrue(Record.keyEQ(r1,r2)) ; assertTrue(Record.keyGE(r1,r2)) ; assertTrue(Record.keyLE(r1,r2)) ; assertFalse(Record.keyLT(r1,r2)) ; assertFalse(Record.keyGT(r1,r2)) ; }
@Test public void record2() { Record r1 = intToRecord(1000, RecLen) ; Record r2 = intToRecord(2222, RecLen) ; assertFalse(Record.keyEQ(r1,r2)) ; assertFalse(Record.keyGE(r1,r2)) ; assertTrue(Record.keyLE(r1,r2)) ; assertTrue(Record.keyLT(r1,r2)) ; assertFalse(Record.keyGT(r1,r2)) ; }