package com.flaptor.org.apache.lucene.util; /** * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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. */ import java.util.IdentityHashMap; import java.util.Map; /** * An average, best guess, MemoryModel that should work okay on most systems. * */ public class AverageGuessMemoryModel extends MemoryModel { // best guess primitive sizes private final Map<Class<?>,Integer> sizes = new IdentityHashMap<Class<?>,Integer>() { { put(boolean.class, Integer.valueOf(1)); put(byte.class, Integer.valueOf(1)); put(char.class, Integer.valueOf(2)); put(short.class, Integer.valueOf(2)); put(int.class, Integer.valueOf(4)); put(float.class, Integer.valueOf(4)); put(double.class, Integer.valueOf(8)); put(long.class, Integer.valueOf(8)); } }; /* * (non-Javadoc) * * @see org.apache.lucene.util.MemoryModel#getArraySize() */ @Override public int getArraySize() { return 16; } /* * (non-Javadoc) * * @see org.apache.lucene.util.MemoryModel#getClassSize() */ @Override public int getClassSize() { return 8; } /* (non-Javadoc) * @see org.apache.lucene.util.MemoryModel#getPrimitiveSize(java.lang.Class) */ @Override public int getPrimitiveSize(Class<?> clazz) { return sizes.get(clazz).intValue(); } /* (non-Javadoc) * @see org.apache.lucene.util.MemoryModel#getReferenceSize() */ @Override public int getReferenceSize() { return 4; } }