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// Copyright 2015-2019 SWIM.AI inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package swim.collections;

public abstract class BTreeContext {
  @SuppressWarnings("unchecked")
  protected int compareKey(Object x, Object y) {
    return ((Comparable) x).compareTo(y);
  }

  protected int pageSplitSize() {
    return 32;
  }

  protected boolean pageShouldSplit(BTreePage page) {
    return page.arity() > pageSplitSize();
  }

  protected boolean pageShouldMerge(BTreePage page) {
    return page.arity() < pageSplitSize() >>> 1;
  }
}