io.netty.handler.codec.serialization.ObjectEncoderOutputStream Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of wildfly-client-all

This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

There is a newer version: 32.0.0.Final

Show newest version

/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project 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 io.netty.handler.codec.serialization;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufOutputStream;
import io.netty.buffer.Unpooled;

import java.io.DataOutputStream;
import java.io.IOException;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.io.OutputStream;

/**
 * An {@link ObjectOutput} which is interoperable with {@link ObjectDecoder}
 * and {@link ObjectDecoderInputStream}.
 */
public class ObjectEncoderOutputStream extends OutputStream implements
        ObjectOutput {

    private final DataOutputStream out;
    private final int estimatedLength;

    /**
     * Creates a new {@link ObjectOutput} with the estimated length of 512
     * bytes.
     *
     * @param out
     *        the {@link OutputStream} where the serialized form will be
     *        written out
     */
    public ObjectEncoderOutputStream(OutputStream out) {
        this(out, 512);
    }

    /**
     * Creates a new {@link ObjectOutput}.
     *
     * @param out
     *        the {@link OutputStream} where the serialized form will be
     *        written out
     *
     * @param estimatedLength
     *        the estimated byte length of the serialized form of an object.
     *        If the length of the serialized form exceeds this value, the
     *        internal buffer will be expanded automatically at the cost of
     *        memory bandwidth.  If this value is too big, it will also waste
     *        memory bandwidth.  To avoid unnecessary memory copy or allocation
     *        cost, please specify the properly estimated value.
     */
    public ObjectEncoderOutputStream(OutputStream out, int estimatedLength) {
        if (out == null) {
            throw new NullPointerException("out");
        }
        if (estimatedLength < 0) {
            throw new IllegalArgumentException("estimatedLength: " + estimatedLength);
        }

        if (out instanceof DataOutputStream) {
            this.out = (DataOutputStream) out;
        } else {
            this.out = new DataOutputStream(out);
        }
        this.estimatedLength = estimatedLength;
    }

    @Override
    public void writeObject(Object obj) throws IOException {
        ByteBufOutputStream bout = new ByteBufOutputStream(Unpooled.buffer(estimatedLength));
        ObjectOutputStream oout = new CompactObjectOutputStream(bout);
        oout.writeObject(obj);
        oout.flush();
        oout.close();

        ByteBuf buffer = bout.buffer();
        int objectSize = buffer.readableBytes();
        writeInt(objectSize);
        buffer.getBytes(0, this, objectSize);
    }

    @Override
    public void write(int b) throws IOException {
        out.write(b);
    }

    @Override
    public void close() throws IOException {
        out.close();
    }

    @Override
    public void flush() throws IOException {
        out.flush();
    }

    public final int size() {
        return out.size();
    }

    @Override
    public void write(byte[] b, int off, int len) throws IOException {
        out.write(b, off, len);
    }

    @Override
    public void write(byte[] b) throws IOException {
        out.write(b);
    }

    @Override
    public final void writeBoolean(boolean v) throws IOException {
        out.writeBoolean(v);
    }

    @Override
    public final void writeByte(int v) throws IOException {
        out.writeByte(v);
    }

    @Override
    public final void writeBytes(String s) throws IOException {
        out.writeBytes(s);
    }

    @Override
    public final void writeChar(int v) throws IOException {
        out.writeChar(v);
    }

    @Override
    public final void writeChars(String s) throws IOException {
        out.writeChars(s);
    }

    @Override
    public final void writeDouble(double v) throws IOException {
        out.writeDouble(v);
    }

    @Override
    public final void writeFloat(float v) throws IOException {
        out.writeFloat(v);
    }

    @Override
    public final void writeInt(int v) throws IOException {
        out.writeInt(v);
    }

    @Override
    public final void writeLong(long v) throws IOException {
        out.writeLong(v);
    }

    @Override
    public final void writeShort(int v) throws IOException {
        out.writeShort(v);
    }

    @Override
    public final void writeUTF(String str) throws IOException {
        out.writeUTF(str);
    }
}