1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 * 19 */ 20 package org.apache.mina.filter.buffer; 21 22 import org.apache.mina.core.buffer.IoBuffer; 23 import org.apache.mina.util.LazyInitializer; 24 25 /** 26 * An {@link LazyInitializer} implementation that initializes an 27 * {@link IoBuffer} only when needed. 28 * 29 * @author The Apache MINA Project (dev@mina.apache.org) 30 * @since MINA 2.0.0-M2 31 */ 32 public class IoBufferLazyInitializer extends LazyInitializer<IoBuffer> { 33 34 /** 35 * The buffer size allocated for each new session's buffer. 36 */ 37 private int bufferSize; 38 39 /** 40 * Constructor which sets allocated buffer size to <code>bufferSize</code>. 41 * 42 * @param bufferSize the new buffer size 43 */ 44 public IoBufferLazyInitializer(int bufferSize) { 45 this.bufferSize = bufferSize; 46 } 47 48 /** 49 * {@inheritDoc} 50 */ 51 public IoBuffer init() { 52 return IoBuffer.allocate(bufferSize); 53 } 54 }