/* * Copyright 1999-2011 Alibaba Group. * * 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 com.alibaba.dubbo.common.serialize.support.java; import java.io.IOException; import java.io.InputStream; import java.io.ObjectInputStream; import java.lang.reflect.Type; import com.alibaba.dubbo.common.serialize.support.nativejava.NativeJavaObjectInput; /** * Java Object input. * * @author qian.lei */ public class JavaObjectInput extends NativeJavaObjectInput { public final static int MAX_BYTE_ARRAY_LENGTH = 8 * 1024 * 1024; public JavaObjectInput(InputStream is) throws IOException { super(new ObjectInputStream(is)); } public JavaObjectInput(InputStream is, boolean compacted) throws IOException { super(compacted ? new CompactedObjectInputStream(is) : new ObjectInputStream(is)); } public byte[] readBytes() throws IOException { int len = getObjectInputStream().readInt(); if( len < 0 ) return null; if( len == 0 ) return new byte[0]; if( len > MAX_BYTE_ARRAY_LENGTH ) throw new IOException("Byte array length too large. " + len); byte[] b = new byte[len]; getObjectInputStream().readFully(b); return b; } public String readUTF() throws IOException { int len = getObjectInputStream().readInt(); if( len < 0 ) return null; return getObjectInputStream().readUTF(); } public Object readObject() throws IOException, ClassNotFoundException { byte b = getObjectInputStream().readByte(); if( b == 0 ) return null; return getObjectInputStream().readObject(); } @SuppressWarnings("unchecked") public <T> T readObject(Class<T> cls) throws IOException, ClassNotFoundException { return (T) readObject(); } @SuppressWarnings("unchecked") public <T> T readObject(Class<T> cls, Type type) throws IOException,ClassNotFoundException { return (T) readObject(); } }