MethodMap.java

/*
 * Copyright (c) 2001-2017, Zoltan Farkas All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * Additionally licensed with:
 *
 * 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 org.spf4j.stackmonitor;

import org.spf4j.base.avro.Method;

/**
 * A custom hashcode and eequals map implementation
 * @author Zoltan Farkas
 */
public class MethodMap<T> extends THashMap<Method, T> {

  public MethodMap() {
    super(2);
  }

  public MethodMap(final int initialCapacity) {
    super(initialCapacity);
  }

  /**
   * optimized hashing.
   */
  @Override
  protected int hash(final Object notnull) {
    Method m = (Method) notnull;
    return m.getName().hashCode();
  }

  /** equals is used for both keys and values. */
  @Override
  protected boolean equals(final Object notnull, final Object two) {
    if (notnull == two) {
      return true;
    }
    if (two == null) {
      return false;
    }
    Class<? extends Object> fClass = notnull.getClass();
    if (fClass != two.getClass()) {
      return false;
    }
    if (fClass == Method.class) {
      Method m1 = (Method) notnull;
      Method m2 = (Method) two;
      return m1.getName().equals(m2.getName()) && m1.getDeclaringClass().equals(m2.getDeclaringClass());
    } else {
      return notnull.equals(two);
    }
  }

}