Method newSubMap

src/main/java/org/mapdb/BTreeMapJava.java:927–962

Utility to create submaps, where given bounds override unbounded(null) ones and/or are checked against bounded ones.

(K fromKey,
                                      boolean fromInclusive,
                                      K toKey,
                                      boolean toInclusive)

         * unbounded(null) ones and/or are checked against bounded ones.
         */
        private SubMap<K,V> newSubMap(K fromKey,
                                      boolean fromInclusive,
                                      K toKey,
                                      boolean toInclusive) {

//            if(fromKey!=null && toKey!=null){
//                int comp = m.comparator.compare(fromKey, toKey);
//                if((fromInclusive||!toInclusive) && comp==0)
//                    throw new IllegalArgumentException();
//            }

            if (lo != null) {
                if (fromKey == null) {
                    fromKey = lo;
                    fromInclusive = loInclusive;
                }
                else {
                    int c = m.comparator().compare(fromKey, lo);
                    if (c < 0 || (c == 0 && !loInclusive && fromInclusive))
                        throw new IllegalArgumentException("key out of range");
                }
            }
            if (hi != null) {
                if (toKey == null) {
                    toKey = hi;
                    toInclusive = hiInclusive;
                }
                else {
                    int c = m.comparator().compare(toKey, hi);
                    if (c > 0 || (c == 0 && !hiInclusive && toInclusive))
                        throw new IllegalArgumentException("key out of range");
                }
            }
            return new SubMap<K,V>(m, fromKey, fromInclusive,
                    toKey, toInclusive);
        }

        @Override
        public SubMap<K,V> subMap(K fromKey,