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/*
* 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.dubbo.common.serialize.java;
import org.apache.dubbo.common.serialize.nativejava.NativeJavaObjectInput;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.lang.reflect.Type;
/**
* Java object input implementation
*/
public class JavaObjectInput extends NativeJavaObjectInput {
public static final 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));
}
@Override
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;
}
@Override
public String readUTF() throws IOException {
int len = getObjectInputStream().readInt();
if (len < 0) {
return null;
}
return getObjectInputStream().readUTF();
}
@Override
public Object readObject() throws IOException, ClassNotFoundException {
byte b = getObjectInputStream().readByte();
if (b == 0) {
return null;
}
return getObjectInputStream().readObject();
}
@Override
@SuppressWarnings("unchecked")
public T readObject(Class cls) throws IOException,
ClassNotFoundException {
return (T) readObject();
}
@Override
@SuppressWarnings("unchecked")
public T readObject(Class cls, Type type) throws IOException, ClassNotFoundException {
return (T) readObject();
}
}