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VoltDB client interface libraries
/**
* 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.jute_voltpatches;
import java.io.DataInput;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
/**
*
*/
public class BinaryInputArchive implements InputArchive {
static public int MAX_BUFFER_SIZE = 1024 * 1024 * 52;
private final DataInput in;
static public BinaryInputArchive getArchive(InputStream strm) {
return new BinaryInputArchive(new DataInputStream(strm));
}
static private class BinaryIndex implements Index {
private int nelems;
BinaryIndex(int nelems) {
this.nelems = nelems;
}
@Override
public boolean done() {
return (nelems <= 0);
}
@Override
public void incr() {
nelems--;
}
}
/** Creates a new instance of BinaryInputArchive */
public BinaryInputArchive(DataInput in) {
this.in = in;
}
@Override
public byte readByte(String tag) throws IOException {
return in.readByte();
}
@Override
public boolean readBool(String tag) throws IOException {
return in.readBoolean();
}
@Override
public int readInt(String tag) throws IOException {
return in.readInt();
}
@Override
public long readLong(String tag) throws IOException {
return in.readLong();
}
@Override
public float readFloat(String tag) throws IOException {
return in.readFloat();
}
@Override
public double readDouble(String tag) throws IOException {
return in.readDouble();
}
@Override
public String readString(String tag) throws IOException {
int len = in.readInt();
if (len == -1)
return null;
byte b[] = new byte[len];
in.readFully(b);
return new String(b, "UTF8");
}
static public final int maxBuffer = determineMaxBuffer();
private static int determineMaxBuffer() {
String maxBufferString = System.getProperty("jute.maxbuffer");
try {
return Integer.parseInt(maxBufferString);
} catch (Exception e) {
return MAX_BUFFER_SIZE;
}
}
@Override
public byte[] readBuffer(String tag) throws IOException {
int len = readInt(tag);
if (len == -1)
return null;
if (len < 0 || len > maxBuffer) {
throw new IOException("Unreasonable length = " + len);
}
byte[] arr = new byte[len];
in.readFully(arr);
return arr;
}
@Override
public void readRecord(Record r, String tag) throws IOException {
r.deserialize(this, tag);
}
@Override
public void startRecord(String tag) throws IOException {
}
@Override
public void endRecord(String tag) throws IOException {
}
@Override
public Index startVector(String tag) throws IOException {
int len = readInt(tag);
if (len == -1) {
return null;
}
return new BinaryIndex(len);
}
@Override
public void endVector(String tag) throws IOException {
}
@Override
public Index startMap(String tag) throws IOException {
return new BinaryIndex(readInt(tag));
}
@Override
public void endMap(String tag) throws IOException {
}
}