Java tutorial
/* * 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. */ package org.apache.solr.common.util; import java.io.DataInput; import java.io.InputStream; import java.nio.ByteBuffer; /** * An abstract DataInput that extends InputStream */ public abstract class DataInputInputStream extends InputStream implements DataInput { /**If possible, read UTF8 bytes directly from the underlying buffer * * @param utf8 the utf8 ubject to read into * @param len length of the utf8 stream * @return whether it is possible to do a direct read or not */ boolean readDirectUtf8(ByteArrayUtf8CharSequence utf8, int len) { return false; } /**If possible, read ByteBuffer directly from the underlying buffer * @param sz the size of the buffer to be read */ public ByteBuffer readDirectByteBuffer(int sz) { return null; }; }