1330 lines
45 KiB
Java
1330 lines
45 KiB
Java
/*******************************************************************************
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* Copyright 2010 Cees De Groot, Alex Boisvert, Jan Kotek
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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******************************************************************************/
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package org.apache.jdbm;
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import java.io.*;
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import java.lang.reflect.Array;
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import java.math.BigDecimal;
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import java.math.BigInteger;
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import java.util.*;
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import static org.apache.jdbm.SerializationHeader.*;
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/**
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* Serialization util. It reduces serialized data size for most common java types.
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* <p/>
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* Common pattern is one byte header which identifies data type, then size is written (if required) and
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* data.
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* <p/>
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* On unknown types normal java serialization is used
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* <p/>
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* <p/>
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* Header byte values bellow 180 are reserved by author for future use. If you want to customize
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* this class, use values over 180, to be compatible with future updates.
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*
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* @author Jan Kotek
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*/
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@SuppressWarnings("unchecked")
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public class Serialization extends SerialClassInfo implements Serializer {
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/**
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* print statistics to STDOUT
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*/
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static final boolean DEBUG = false;
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static final String UTF8 = "UTF-8";
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Serialization(DBAbstract db, long serialClassInfoRecid, ArrayList<ClassInfo> info) throws IOException {
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super(db, serialClassInfoRecid,info);
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}
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public Serialization() {
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super(null,0L,new ArrayList<ClassInfo>());
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// Add java.lang.Object as registered class
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registered.add(new ClassInfo(Object.class.getName(), new FieldInfo[]{},false,false));
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}
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/**
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* Serialize the object into a byte array.
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*/
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public byte[] serialize(Object obj)
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throws IOException {
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DataInputOutput ba = new DataInputOutput();
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serialize(ba, obj);
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return ba.toByteArray();
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}
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boolean isSerializable(Object obj) {
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//TODO suboptimal code
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try {
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serialize(new DataOutputStream(new ByteArrayOutputStream()), obj);
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return true;
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} catch (Exception e) {
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return false;
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}
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}
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public void serialize(final DataOutput out, final Object obj) throws IOException {
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serialize(out, obj, null);
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}
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public void serialize(final DataOutput out, final Object obj, FastArrayList objectStack) throws IOException {
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/**try to find object on stack if it exists*/
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if (objectStack != null) {
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int indexInObjectStack = objectStack.identityIndexOf(obj);
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if (indexInObjectStack != -1) {
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//object was already serialized, just write reference to it and return
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out.write(OBJECT_STACK);
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LongPacker.packInt(out, indexInObjectStack);
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return;
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}
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//add this object to objectStack
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objectStack.add(obj);
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}
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final Class clazz = obj != null ? obj.getClass() : null;
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/** first try to serialize object without initializing object stack*/
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if (obj == null) {
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out.write(NULL);
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return;
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} else if (clazz == Boolean.class) {
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if (((Boolean) obj).booleanValue())
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out.write(BOOLEAN_TRUE);
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else
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out.write(BOOLEAN_FALSE);
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return;
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} else if (clazz == Integer.class) {
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final int val = (Integer) obj;
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writeInteger(out, val);
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return;
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} else if (clazz == Double.class) {
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double v = (Double) obj;
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if (v == -1d)
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out.write(DOUBLE_MINUS_1);
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else if (v == 0d)
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out.write(DOUBLE_0);
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else if (v == 1d)
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out.write(DOUBLE_1);
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else if (v >= 0 && v <= 255 && (int) v == v) {
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out.write(DOUBLE_255);
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out.write((int) v);
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} else if (v >= Short.MIN_VALUE && v <= Short.MAX_VALUE && (short) v == v) {
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out.write(DOUBLE_SHORT);
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out.writeShort((int) v);
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} else {
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out.write(DOUBLE_FULL);
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out.writeDouble(v);
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}
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return;
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} else if (clazz == Float.class) {
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float v = (Float) obj;
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if (v == -1f)
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out.write(FLOAT_MINUS_1);
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else if (v == 0f)
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out.write(FLOAT_0);
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else if (v == 1f)
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out.write(FLOAT_1);
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else if (v >= 0 && v <= 255 && (int) v == v) {
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out.write(FLOAT_255);
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out.write((int) v);
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} else if (v >= Short.MIN_VALUE && v <= Short.MAX_VALUE && (short) v == v) {
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out.write(FLOAT_SHORT);
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out.writeShort((int) v);
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} else {
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out.write(FLOAT_FULL);
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out.writeFloat(v);
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}
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return;
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} else if (clazz == BigInteger.class) {
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out.write(BIGINTEGER);
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byte[] buf = ((BigInteger) obj).toByteArray();
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serializeByteArrayInt(out, buf);
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return;
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} else if (clazz == BigDecimal.class) {
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out.write(BIGDECIMAL);
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BigDecimal d = (BigDecimal) obj;
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serializeByteArrayInt(out, d.unscaledValue().toByteArray());
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LongPacker.packInt(out, d.scale());
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return;
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} else if (clazz == Long.class) {
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final long val = (Long) obj;
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writeLong(out, val);
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return;
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} else if (clazz == Short.class) {
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short val = (Short) obj;
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if (val == -1)
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out.write(SHORT_MINUS_1);
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else if (val == 0)
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out.write(SHORT_0);
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else if (val == 1)
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out.write(SHORT_1);
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else if (val > 0 && val < 255) {
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out.write(SHORT_255);
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out.write(val);
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} else {
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out.write(SHORT_FULL);
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out.writeShort(val);
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}
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return;
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} else if (clazz == Byte.class) {
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byte val = (Byte) obj;
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if (val == -1)
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out.write(BYTE_MINUS_1);
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else if (val == 0)
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out.write(BYTE_0);
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else if (val == 1)
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out.write(BYTE_1);
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else {
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out.write(SHORT_FULL);
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out.writeByte(val);
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}
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return;
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} else if (clazz == Character.class) {
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out.write(CHAR);
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out.writeChar((Character) obj);
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return;
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} else if (clazz == String.class) {
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String s = (String) obj;
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if (s.length() == 0) {
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out.write(STRING_EMPTY);
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} else {
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out.write(STRING);
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serializeString(out, s);
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}
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return;
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} else if (obj instanceof Class) {
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out.write(CLASS);
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serialize(out, ((Class) obj).getName());
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return;
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} else if (obj instanceof int[]) {
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writeIntArray(out, (int[]) obj);
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return;
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} else if (obj instanceof long[]) {
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writeLongArray(out, (long[]) obj);
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return;
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} else if (obj instanceof short[]) {
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out.write(SHORT_ARRAY);
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short[] a = (short[]) obj;
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LongPacker.packInt(out,a.length);
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for(short s:a) out.writeShort(s);
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return;
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} else if (obj instanceof boolean[]) {
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out.write(BOOLEAN_ARRAY);
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boolean[] a = (boolean[]) obj;
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LongPacker.packInt(out,a.length);
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for(boolean s:a) out.writeBoolean(s); //TODO pack 8 booleans to single byte
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return;
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} else if (obj instanceof double[]) {
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out.write(DOUBLE_ARRAY);
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double[] a = (double[]) obj;
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LongPacker.packInt(out,a.length);
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for(double s:a) out.writeDouble(s);
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return;
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} else if (obj instanceof float[]) {
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out.write(FLOAT_ARRAY);
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float[] a = (float[]) obj;
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LongPacker.packInt(out,a.length);
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for(float s:a) out.writeFloat(s);
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return;
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} else if (obj instanceof char[]) {
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out.write(CHAR_ARRAY);
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char[] a = (char[]) obj;
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LongPacker.packInt(out,a.length);
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for(char s:a) out.writeChar(s);
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return;
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} else if (obj instanceof byte[]) {
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byte[] b = (byte[]) obj;
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out.write(ARRAY_BYTE_INT);
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serializeByteArrayInt(out, b);
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return;
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} else if (clazz == Date.class) {
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out.write(DATE);
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out.writeLong(((Date) obj).getTime());
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return;
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} else if (clazz == UUID.class) {
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out.write(UUID);
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serializeUUID(out,(UUID) obj);
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return;
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} else if (clazz == BTree.class) {
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out.write(BTREE);
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((BTree) obj).writeExternal(out);
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return;
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} else if (clazz == HTree.class) {
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out.write(HTREE);
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((HTree) obj).serialize(out);
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return;
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} else if (clazz == LinkedList2.class) {
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out.write(JDBMLINKEDLIST);
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((LinkedList2) obj).serialize(out);
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return;
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}
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/** classes bellow need object stack, so initialize it if not alredy initialized*/
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if (objectStack == null) {
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objectStack = new FastArrayList();
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objectStack.add(obj);
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}
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if (obj instanceof Object[]) {
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Object[] b = (Object[]) obj;
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boolean packableLongs = b.length <= 255;
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if (packableLongs) {
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//check if it contains packable longs
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for (Object o : b) {
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if (o != null && (o.getClass() != Long.class || (((Long) o).longValue() < 0 && ((Long) o).longValue() != Long.MAX_VALUE))) {
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packableLongs = false;
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break;
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}
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}
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}
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if (packableLongs) {
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//packable Longs is special case, it is often used in JDBM to reference fields
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out.write(ARRAY_OBJECT_PACKED_LONG);
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out.write(b.length);
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for (Object o : b) {
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if (o == null)
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LongPacker.packLong(out, 0);
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else
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LongPacker.packLong(out, ((Long) o).longValue() + 1);
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}
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} else {
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out.write(ARRAY_OBJECT);
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LongPacker.packInt(out, b.length);
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// Write class id for components
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Class<?> componentType = obj.getClass().getComponentType();
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registerClass(componentType);
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//write class header
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int classId = getClassId(componentType);
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LongPacker.packInt(out, classId);
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for (Object o : b)
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serialize(out, o, objectStack);
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}
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} else if (clazz == ArrayList.class) {
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ArrayList l = (ArrayList) obj;
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boolean packableLongs = l.size() < 255;
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if (packableLongs) {
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//packable Longs is special case, it is often used in JDBM to reference fields
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for (Object o : l) {
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if (o != null && (o.getClass() != Long.class || (((Long) o).longValue() < 0 && ((Long) o).longValue() != Long.MAX_VALUE))) {
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packableLongs = false;
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break;
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}
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}
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}
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if (packableLongs) {
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out.write(ARRAYLIST_PACKED_LONG);
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out.write(l.size());
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for (Object o : l) {
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if (o == null)
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LongPacker.packLong(out, 0);
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else
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LongPacker.packLong(out, ((Long) o).longValue() + 1);
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}
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} else {
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serializeCollection(ARRAYLIST, out, obj, objectStack);
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}
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} else if (clazz == java.util.LinkedList.class) {
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serializeCollection(LINKEDLIST, out, obj, objectStack);
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} else if (clazz == Vector.class) {
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serializeCollection(VECTOR, out, obj, objectStack);
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} else if (clazz == TreeSet.class) {
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TreeSet l = (TreeSet) obj;
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out.write(TREESET);
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LongPacker.packInt(out, l.size());
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serialize(out, l.comparator(), objectStack);
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for (Object o : l)
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serialize(out, o, objectStack);
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} else if (clazz == HashSet.class) {
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serializeCollection(HASHSET, out, obj, objectStack);
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} else if (clazz == LinkedHashSet.class) {
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serializeCollection(LINKEDHASHSET, out, obj, objectStack);
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} else if (clazz == TreeMap.class) {
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TreeMap l = (TreeMap) obj;
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out.write(TREEMAP);
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LongPacker.packInt(out, l.size());
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serialize(out, l.comparator(), objectStack);
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for (Object o : l.keySet()) {
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serialize(out, o, objectStack);
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serialize(out, l.get(o), objectStack);
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}
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} else if (clazz == HashMap.class) {
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serializeMap(HASHMAP, out, obj, objectStack);
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} else if (clazz == IdentityHashMap.class) {
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serializeMap(IDENTITYHASHMAP, out, obj, objectStack);
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} else if (clazz == LinkedHashMap.class) {
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serializeMap(LINKEDHASHMAP, out, obj, objectStack);
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} else if (clazz == Hashtable.class) {
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serializeMap(HASHTABLE, out, obj, objectStack);
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} else if (clazz == Properties.class) {
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serializeMap(PROPERTIES, out, obj, objectStack);
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} else if (clazz == Locale.class){
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out.write(LOCALE);
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Locale l = (Locale) obj;
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out.writeUTF(l.getLanguage());
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out.writeUTF(l.getCountry());
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out.writeUTF(l.getVariant());
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} else {
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out.write(NORMAL);
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writeObject(out, obj, objectStack);
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}
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}
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static void serializeString(DataOutput out, String obj) throws IOException {
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final int len = obj.length();
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LongPacker.packInt(out, len);
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for (int i = 0; i < len; i++) {
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int c = (int) obj.charAt(i); //TODO investigate if c could be negative here
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LongPacker.packInt(out, c);
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}
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}
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private void serializeUUID(DataOutput out, UUID uuid) throws IOException
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{
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out.writeLong(uuid.getMostSignificantBits());
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out.writeLong(uuid.getLeastSignificantBits());
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}
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private void serializeMap(int header, DataOutput out, Object obj, FastArrayList objectStack) throws IOException {
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Map l = (Map) obj;
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out.write(header);
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LongPacker.packInt(out, l.size());
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for (Object o : l.keySet()) {
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serialize(out, o, objectStack);
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serialize(out, l.get(o), objectStack);
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}
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}
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private void serializeCollection(int header, DataOutput out, Object obj, FastArrayList objectStack) throws IOException {
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Collection l = (Collection) obj;
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out.write(header);
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LongPacker.packInt(out, l.size());
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for (Object o : l)
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serialize(out, o, objectStack);
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}
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private void serializeByteArrayInt(DataOutput out, byte[] b) throws IOException {
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LongPacker.packInt(out, b.length);
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out.write(b);
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}
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private void writeLongArray(DataOutput da, long[] obj) throws IOException {
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long max = Long.MIN_VALUE;
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long min = Long.MAX_VALUE;
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for (long i : obj) {
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max = Math.max(max, i);
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min = Math.min(min, i);
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}
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if (0 <= min && max <= 255) {
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da.write(ARRAY_LONG_B);
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LongPacker.packInt(da, obj.length);
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for (long l : obj)
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da.write((int) l);
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} else if (0 <= min && max <= Long.MAX_VALUE) {
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da.write(ARRAY_LONG_PACKED);
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LongPacker.packInt(da, obj.length);
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for (long l : obj)
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LongPacker.packLong(da, l);
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} else if (Short.MIN_VALUE <= min && max <= Short.MAX_VALUE) {
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da.write(ARRAY_LONG_S);
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LongPacker.packInt(da, obj.length);
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for (long l : obj)
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da.writeShort((short) l);
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} else if (Integer.MIN_VALUE <= min && max <= Integer.MAX_VALUE) {
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da.write(ARRAY_LONG_I);
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|
LongPacker.packInt(da, obj.length);
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for (long l : obj)
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da.writeInt((int) l);
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} else {
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da.write(ARRAY_LONG_L);
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LongPacker.packInt(da, obj.length);
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for (long l : obj)
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da.writeLong(l);
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}
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}
|
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|
|
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private void writeIntArray(DataOutput da, int[] obj) throws IOException {
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|
int max = Integer.MIN_VALUE;
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|
int min = Integer.MAX_VALUE;
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for (int i : obj) {
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max = Math.max(max, i);
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min = Math.min(min, i);
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}
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|
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boolean fitsInByte = 0 <= min && max <= 255;
|
|
boolean fitsInShort = Short.MIN_VALUE >= min && max <= Short.MAX_VALUE;
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|
|
|
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if (obj.length <= 255 && fitsInByte) {
|
|
da.write(ARRAY_INT_B_255);
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|
da.write(obj.length);
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|
for (int i : obj)
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da.write(i);
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|
} else if (fitsInByte) {
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|
da.write(ARRAY_INT_B_INT);
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|
LongPacker.packInt(da, obj.length);
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|
for (int i : obj)
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da.write(i);
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} else if (0 <= min && max <= Integer.MAX_VALUE) {
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|
da.write(ARRAY_INT_PACKED);
|
|
LongPacker.packInt(da, obj.length);
|
|
for (int l : obj)
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|
LongPacker.packInt(da, l);
|
|
} else if (fitsInShort) {
|
|
da.write(ARRAY_INT_S);
|
|
LongPacker.packInt(da, obj.length);
|
|
for (int i : obj)
|
|
da.writeShort(i);
|
|
} else {
|
|
da.write(ARRAY_INT_I);
|
|
LongPacker.packInt(da, obj.length);
|
|
for (int i : obj)
|
|
da.writeInt(i);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
private void writeInteger(DataOutput da, final int val) throws IOException {
|
|
if (val == -1)
|
|
da.write(INTEGER_MINUS_1);
|
|
else if (val == 0)
|
|
da.write(INTEGER_0);
|
|
else if (val == 1)
|
|
da.write(INTEGER_1);
|
|
else if (val == 2)
|
|
da.write(INTEGER_2);
|
|
else if (val == 3)
|
|
da.write(INTEGER_3);
|
|
else if (val == 4)
|
|
da.write(INTEGER_4);
|
|
else if (val == 5)
|
|
da.write(INTEGER_5);
|
|
else if (val == 6)
|
|
da.write(INTEGER_6);
|
|
else if (val == 7)
|
|
da.write(INTEGER_7);
|
|
else if (val == 8)
|
|
da.write(INTEGER_8);
|
|
else if (val == Integer.MIN_VALUE)
|
|
da.write(INTEGER_MINUS_MAX);
|
|
else if (val > 0 && val < 255) {
|
|
da.write(INTEGER_255);
|
|
da.write(val);
|
|
} else if (val < 0) {
|
|
da.write(INTEGER_PACK_NEG);
|
|
LongPacker.packInt(da, -val);
|
|
} else {
|
|
da.write(INTEGER_PACK);
|
|
LongPacker.packInt(da, val);
|
|
}
|
|
}
|
|
|
|
private void writeLong(DataOutput da, final long val) throws IOException {
|
|
if (val == -1)
|
|
da.write(LONG_MINUS_1);
|
|
else if (val == 0)
|
|
da.write(LONG_0);
|
|
else if (val == 1)
|
|
da.write(LONG_1);
|
|
else if (val == 2)
|
|
da.write(LONG_2);
|
|
else if (val == 3)
|
|
da.write(LONG_3);
|
|
else if (val == 4)
|
|
da.write(LONG_4);
|
|
else if (val == 5)
|
|
da.write(LONG_5);
|
|
else if (val == 6)
|
|
da.write(LONG_6);
|
|
else if (val == 7)
|
|
da.write(LONG_7);
|
|
else if (val == 8)
|
|
da.write(LONG_8);
|
|
else if (val == Long.MIN_VALUE)
|
|
da.write(LONG_MINUS_MAX);
|
|
else if (val > 0 && val < 255) {
|
|
da.write(LONG_255);
|
|
da.write((int) val);
|
|
} else if (val < 0) {
|
|
da.write(LONG_PACK_NEG);
|
|
LongPacker.packLong(da, -val);
|
|
} else {
|
|
da.write(LONG_PACK);
|
|
LongPacker.packLong(da, val);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Deserialize an object from a byte array
|
|
*
|
|
* @throws IOException
|
|
* @throws ClassNotFoundException
|
|
*/
|
|
public Object deserialize(byte[] buf) throws ClassNotFoundException, IOException {
|
|
DataInputOutput bs = new DataInputOutput(buf);
|
|
Object ret = deserialize(bs);
|
|
if (bs.available() != 0)
|
|
throw new InternalError("bytes left: " + bs.available());
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
static String deserializeString(DataInput buf) throws IOException {
|
|
int len = LongPacker.unpackInt(buf);
|
|
char[] b = new char[len];
|
|
for (int i = 0; i < len; i++)
|
|
b[i] = (char) LongPacker.unpackInt(buf);
|
|
|
|
return new String(b);
|
|
}
|
|
|
|
|
|
public Object deserialize(DataInput is) throws IOException, ClassNotFoundException {
|
|
return deserialize(is, null);
|
|
}
|
|
|
|
public Object deserialize(DataInput is, FastArrayList objectStack) throws IOException, ClassNotFoundException {
|
|
|
|
Object ret = null;
|
|
|
|
final int head = is.readUnsignedByte();
|
|
|
|
/** first try to deserialize object without allocating object stack*/
|
|
switch (head) {
|
|
case NULL:
|
|
break;
|
|
case BOOLEAN_TRUE:
|
|
ret = Boolean.TRUE;
|
|
break;
|
|
case BOOLEAN_FALSE:
|
|
ret = Boolean.FALSE;
|
|
break;
|
|
case INTEGER_MINUS_1:
|
|
ret = Integer.valueOf(-1);
|
|
break;
|
|
case INTEGER_0:
|
|
ret = Integer.valueOf(0);
|
|
break;
|
|
case INTEGER_1:
|
|
ret = Integer.valueOf(1);
|
|
break;
|
|
case INTEGER_2:
|
|
ret = Integer.valueOf(2);
|
|
break;
|
|
case INTEGER_3:
|
|
ret = Integer.valueOf(3);
|
|
break;
|
|
case INTEGER_4:
|
|
ret = Integer.valueOf(4);
|
|
break;
|
|
case INTEGER_5:
|
|
ret = Integer.valueOf(5);
|
|
break;
|
|
case INTEGER_6:
|
|
ret = Integer.valueOf(6);
|
|
break;
|
|
case INTEGER_7:
|
|
ret = Integer.valueOf(7);
|
|
break;
|
|
case INTEGER_8:
|
|
ret = Integer.valueOf(8);
|
|
break;
|
|
case INTEGER_MINUS_MAX:
|
|
ret = Integer.valueOf(Integer.MIN_VALUE);
|
|
break;
|
|
case INTEGER_255:
|
|
ret = Integer.valueOf(is.readUnsignedByte());
|
|
break;
|
|
case INTEGER_PACK_NEG:
|
|
ret = Integer.valueOf(-LongPacker.unpackInt(is));
|
|
break;
|
|
case INTEGER_PACK:
|
|
ret = Integer.valueOf(LongPacker.unpackInt(is));
|
|
break;
|
|
case LONG_MINUS_1:
|
|
ret = Long.valueOf(-1);
|
|
break;
|
|
case LONG_0:
|
|
ret = Long.valueOf(0);
|
|
break;
|
|
case LONG_1:
|
|
ret = Long.valueOf(1);
|
|
break;
|
|
case LONG_2:
|
|
ret = Long.valueOf(2);
|
|
break;
|
|
case LONG_3:
|
|
ret = Long.valueOf(3);
|
|
break;
|
|
case LONG_4:
|
|
ret = Long.valueOf(4);
|
|
break;
|
|
case LONG_5:
|
|
ret = Long.valueOf(5);
|
|
break;
|
|
case LONG_6:
|
|
ret = Long.valueOf(6);
|
|
break;
|
|
case LONG_7:
|
|
ret = Long.valueOf(7);
|
|
break;
|
|
case LONG_8:
|
|
ret = Long.valueOf(8);
|
|
break;
|
|
case LONG_255:
|
|
ret = Long.valueOf(is.readUnsignedByte());
|
|
break;
|
|
case LONG_PACK_NEG:
|
|
ret = Long.valueOf(-LongPacker.unpackLong(is));
|
|
break;
|
|
case LONG_PACK:
|
|
ret = Long.valueOf(LongPacker.unpackLong(is));
|
|
break;
|
|
case LONG_MINUS_MAX:
|
|
ret = Long.valueOf(Long.MIN_VALUE);
|
|
break;
|
|
case SHORT_MINUS_1:
|
|
ret = Short.valueOf((short) -1);
|
|
break;
|
|
case SHORT_0:
|
|
ret = Short.valueOf((short) 0);
|
|
break;
|
|
case SHORT_1:
|
|
ret = Short.valueOf((short) 1);
|
|
break;
|
|
case SHORT_255:
|
|
ret = Short.valueOf((short) is.readUnsignedByte());
|
|
break;
|
|
case SHORT_FULL:
|
|
ret = Short.valueOf(is.readShort());
|
|
break;
|
|
case BYTE_MINUS_1:
|
|
ret = Byte.valueOf((byte) -1);
|
|
break;
|
|
case BYTE_0:
|
|
ret = Byte.valueOf((byte) 0);
|
|
break;
|
|
case BYTE_1:
|
|
ret = Byte.valueOf((byte) 1);
|
|
break;
|
|
case BYTE_FULL:
|
|
ret = Byte.valueOf(is.readByte());
|
|
break;
|
|
case SHORT_ARRAY:
|
|
int size = LongPacker.unpackInt(is);
|
|
ret = new short[size];
|
|
for(int i=0;i<size;i++) ((short[])ret)[i] = is.readShort();
|
|
break;
|
|
case BOOLEAN_ARRAY:
|
|
size = LongPacker.unpackInt(is);
|
|
ret = new boolean[size];
|
|
for(int i=0;i<size;i++) ((boolean[])ret)[i] = is.readBoolean();
|
|
break;
|
|
case DOUBLE_ARRAY:
|
|
size = LongPacker.unpackInt(is);
|
|
ret = new double[size];
|
|
for(int i=0;i<size;i++) ((double[])ret)[i] = is.readDouble();
|
|
break;
|
|
case FLOAT_ARRAY:
|
|
size = LongPacker.unpackInt(is);
|
|
ret = new float[size];
|
|
for(int i=0;i<size;i++) ((float[])ret)[i] = is.readFloat();
|
|
break;
|
|
case CHAR_ARRAY:
|
|
size = LongPacker.unpackInt(is);
|
|
ret = new char[size];
|
|
for(int i=0;i<size;i++) ((char[])ret)[i] = is.readChar();
|
|
break;
|
|
case CHAR:
|
|
ret = Character.valueOf(is.readChar());
|
|
break;
|
|
case FLOAT_MINUS_1:
|
|
ret = Float.valueOf(-1);
|
|
break;
|
|
case FLOAT_0:
|
|
ret = Float.valueOf(0);
|
|
break;
|
|
case FLOAT_1:
|
|
ret = Float.valueOf(1);
|
|
break;
|
|
case FLOAT_255:
|
|
ret = Float.valueOf(is.readUnsignedByte());
|
|
break;
|
|
case FLOAT_SHORT:
|
|
ret = Float.valueOf(is.readShort());
|
|
break;
|
|
case FLOAT_FULL:
|
|
ret = Float.valueOf(is.readFloat());
|
|
break;
|
|
case DOUBLE_MINUS_1:
|
|
ret = Double.valueOf(-1);
|
|
break;
|
|
case DOUBLE_0:
|
|
ret = Double.valueOf(0);
|
|
break;
|
|
case DOUBLE_1:
|
|
ret = Double.valueOf(1);
|
|
break;
|
|
case DOUBLE_255:
|
|
ret = Double.valueOf(is.readUnsignedByte());
|
|
break;
|
|
case DOUBLE_SHORT:
|
|
ret = Double.valueOf(is.readShort());
|
|
break;
|
|
case DOUBLE_FULL:
|
|
ret = Double.valueOf(is.readDouble());
|
|
break;
|
|
case BIGINTEGER:
|
|
ret = new BigInteger(deserializeArrayByteInt(is));
|
|
break;
|
|
case BIGDECIMAL:
|
|
ret = new BigDecimal(new BigInteger(deserializeArrayByteInt(is)), LongPacker.unpackInt(is));
|
|
break;
|
|
case STRING:
|
|
ret = deserializeString(is);
|
|
break;
|
|
case STRING_EMPTY:
|
|
ret = Utils.EMPTY_STRING;
|
|
break;
|
|
|
|
case CLASS:
|
|
ret = deserializeClass(is);
|
|
break;
|
|
case DATE:
|
|
ret = new Date(is.readLong());
|
|
break;
|
|
case UUID:
|
|
ret = deserializeUUID(is);
|
|
break;
|
|
case ARRAY_INT_B_255:
|
|
ret = deserializeArrayIntB255(is);
|
|
break;
|
|
case ARRAY_INT_B_INT:
|
|
ret = deserializeArrayIntBInt(is);
|
|
break;
|
|
case ARRAY_INT_S:
|
|
ret = deserializeArrayIntSInt(is);
|
|
break;
|
|
case ARRAY_INT_I:
|
|
ret = deserializeArrayIntIInt(is);
|
|
break;
|
|
case ARRAY_INT_PACKED:
|
|
ret = deserializeArrayIntPack(is);
|
|
break;
|
|
case ARRAY_LONG_B:
|
|
ret = deserializeArrayLongB(is);
|
|
break;
|
|
case ARRAY_LONG_S:
|
|
ret = deserializeArrayLongS(is);
|
|
break;
|
|
case ARRAY_LONG_I:
|
|
ret = deserializeArrayLongI(is);
|
|
break;
|
|
case ARRAY_LONG_L:
|
|
ret = deserializeArrayLongL(is);
|
|
break;
|
|
case ARRAY_LONG_PACKED:
|
|
ret = deserializeArrayLongPack(is);
|
|
break;
|
|
case ARRAYLIST_PACKED_LONG:
|
|
ret = deserializeArrayListPackedLong(is);
|
|
break;
|
|
case ARRAY_BYTE_INT:
|
|
ret = deserializeArrayByteInt(is);
|
|
break;
|
|
case LOCALE :
|
|
ret = new Locale(is.readUTF(),is.readUTF(),is.readUTF());
|
|
break;
|
|
case JDBMLINKEDLIST:
|
|
ret = LinkedList2.deserialize(is, this);
|
|
break;
|
|
case HTREE:
|
|
ret = HTree.deserialize(is,this);
|
|
break;
|
|
case BTREE:
|
|
ret = BTree.readExternal(is,this);
|
|
break;
|
|
case BTREE_NODE_LEAF:
|
|
throw new InternalError("BPage header, wrong serializer used");
|
|
case BTREE_NODE_NONLEAF:
|
|
throw new InternalError("BPage header, wrong serializer used");
|
|
case JAVA_SERIALIZATION:
|
|
throw new InternalError("Wrong header, data were probably serialized with OutputStream, not with JDBM serialization");
|
|
|
|
case -1:
|
|
throw new EOFException();
|
|
|
|
}
|
|
|
|
if (ret != null || head == NULL) {
|
|
if (objectStack != null)
|
|
objectStack.add(ret);
|
|
return ret;
|
|
}
|
|
|
|
/** something else which needs object stack initialized*/
|
|
|
|
if (objectStack == null)
|
|
objectStack = new FastArrayList();
|
|
int oldObjectStackSize = objectStack.size();
|
|
|
|
switch (head) {
|
|
case NORMAL:
|
|
ret = readObject(is, objectStack);
|
|
break;
|
|
case OBJECT_STACK:
|
|
ret = objectStack.get(LongPacker.unpackInt(is));
|
|
break;
|
|
case ARRAYLIST:
|
|
ret = deserializeArrayList(is, objectStack);
|
|
break;
|
|
case ARRAY_OBJECT:
|
|
ret = deserializeArrayObject(is, objectStack);
|
|
break;
|
|
case ARRAY_OBJECT_PACKED_LONG:
|
|
ret = deserializeArrayObjectPackedLong(is);
|
|
break;
|
|
case LINKEDLIST:
|
|
ret = deserializeLinkedList(is, objectStack);
|
|
break;
|
|
case TREESET:
|
|
ret = deserializeTreeSet(is, objectStack);
|
|
break;
|
|
case HASHSET:
|
|
ret = deserializeHashSet(is, objectStack);
|
|
break;
|
|
case LINKEDHASHSET:
|
|
ret = deserializeLinkedHashSet(is, objectStack);
|
|
break;
|
|
case VECTOR:
|
|
ret = deserializeVector(is, objectStack);
|
|
break;
|
|
case TREEMAP:
|
|
ret = deserializeTreeMap(is, objectStack);
|
|
break;
|
|
case HASHMAP:
|
|
ret = deserializeHashMap(is, objectStack);
|
|
break;
|
|
case IDENTITYHASHMAP:
|
|
ret = deserializeIdentityHashMap(is, objectStack);
|
|
break;
|
|
case LINKEDHASHMAP:
|
|
ret = deserializeLinkedHashMap(is, objectStack);
|
|
break;
|
|
case HASHTABLE:
|
|
ret = deserializeHashtable(is, objectStack);
|
|
break;
|
|
case PROPERTIES:
|
|
ret = deserializeProperties(is, objectStack);
|
|
break;
|
|
|
|
default:
|
|
throw new InternalError("Unknown serialization header: " + head);
|
|
}
|
|
|
|
if (head != OBJECT_STACK && objectStack.size() == oldObjectStackSize) {
|
|
//check if object was not already added to stack as part of collection
|
|
objectStack.add(ret);
|
|
}
|
|
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
private Class deserializeClass(DataInput is) throws IOException, ClassNotFoundException {
|
|
String className = (String) deserialize(is);
|
|
Class cls = Class.forName(className);
|
|
return cls;
|
|
}
|
|
|
|
|
|
private byte[] deserializeArrayByteInt(DataInput is) throws IOException {
|
|
int size = LongPacker.unpackInt(is);
|
|
byte[] b = new byte[size];
|
|
is.readFully(b);
|
|
return b;
|
|
}
|
|
|
|
|
|
private long[] deserializeArrayLongL(DataInput is) throws IOException {
|
|
int size = LongPacker.unpackInt(is);
|
|
long[] ret = new long[size];
|
|
for (int i = 0; i < size; i++)
|
|
ret[i] = is.readLong();
|
|
return ret;
|
|
}
|
|
|
|
|
|
private long[] deserializeArrayLongI(DataInput is) throws IOException {
|
|
int size = LongPacker.unpackInt(is);
|
|
long[] ret = new long[size];
|
|
for (int i = 0; i < size; i++)
|
|
ret[i] = is.readInt();
|
|
return ret;
|
|
}
|
|
|
|
|
|
private long[] deserializeArrayLongS(DataInput is) throws IOException {
|
|
int size = LongPacker.unpackInt(is);
|
|
long[] ret = new long[size];
|
|
for (int i = 0; i < size; i++)
|
|
ret[i] = is.readShort();
|
|
return ret;
|
|
}
|
|
|
|
|
|
private long[] deserializeArrayLongB(DataInput is) throws IOException {
|
|
int size = LongPacker.unpackInt(is);
|
|
long[] ret = new long[size];
|
|
for (int i = 0; i < size; i++) {
|
|
ret[i] = is.readUnsignedByte();
|
|
if (ret[i] < 0)
|
|
throw new EOFException();
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
private int[] deserializeArrayIntIInt(DataInput is) throws IOException {
|
|
int size = LongPacker.unpackInt(is);
|
|
int[] ret = new int[size];
|
|
for (int i = 0; i < size; i++)
|
|
ret[i] = is.readInt();
|
|
return ret;
|
|
}
|
|
|
|
|
|
private int[] deserializeArrayIntSInt(DataInput is) throws IOException {
|
|
int size = LongPacker.unpackInt(is);
|
|
int[] ret = new int[size];
|
|
for (int i = 0; i < size; i++)
|
|
ret[i] = is.readShort();
|
|
return ret;
|
|
}
|
|
|
|
|
|
private int[] deserializeArrayIntBInt(DataInput is) throws IOException {
|
|
int size = LongPacker.unpackInt(is);
|
|
int[] ret = new int[size];
|
|
for (int i = 0; i < size; i++) {
|
|
ret[i] = is.readUnsignedByte();
|
|
if (ret[i] < 0)
|
|
throw new EOFException();
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
private int[] deserializeArrayIntPack(DataInput is) throws IOException {
|
|
int size = LongPacker.unpackInt(is);
|
|
if (size < 0)
|
|
throw new EOFException();
|
|
|
|
int[] ret = new int[size];
|
|
for (int i = 0; i < size; i++) {
|
|
ret[i] = LongPacker.unpackInt(is);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
private long[] deserializeArrayLongPack(DataInput is) throws IOException {
|
|
int size = LongPacker.unpackInt(is);
|
|
if (size < 0)
|
|
throw new EOFException();
|
|
|
|
long[] ret = new long[size];
|
|
for (int i = 0; i < size; i++) {
|
|
ret[i] = LongPacker.unpackLong(is);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
private UUID deserializeUUID(DataInput is) throws IOException
|
|
{
|
|
return new UUID(is.readLong(), is.readLong());
|
|
}
|
|
|
|
private int[] deserializeArrayIntB255(DataInput is) throws IOException {
|
|
int size = is.readUnsignedByte();
|
|
if (size < 0)
|
|
throw new EOFException();
|
|
|
|
int[] ret = new int[size];
|
|
for (int i = 0; i < size; i++) {
|
|
ret[i] = is.readUnsignedByte();
|
|
if (ret[i] < 0)
|
|
throw new EOFException();
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
private Object[] deserializeArrayObject(DataInput is, FastArrayList objectStack) throws IOException, ClassNotFoundException {
|
|
int size = LongPacker.unpackInt(is);
|
|
// Read class id for components
|
|
int classId = LongPacker.unpackInt(is);
|
|
Class clazz = classId2class.get(classId);
|
|
if (clazz == null) clazz = Object.class;
|
|
|
|
Object[] s = (Object[])Array.newInstance(clazz, size);
|
|
objectStack.add(s);
|
|
for (int i = 0; i < size; i++)
|
|
s[i] = deserialize(is, objectStack);
|
|
return s;
|
|
}
|
|
|
|
private Object[] deserializeArrayObjectPackedLong(DataInput is) throws IOException, ClassNotFoundException {
|
|
int size = is.readUnsignedByte();
|
|
Object[] s = new Object[size];
|
|
for (int i = 0; i < size; i++) {
|
|
long l = LongPacker.unpackLong(is);
|
|
if (l == 0)
|
|
s[i] = null;
|
|
else
|
|
s[i] = Long.valueOf(l - 1);
|
|
}
|
|
return s;
|
|
}
|
|
|
|
|
|
private ArrayList<Object> deserializeArrayList(DataInput is, FastArrayList objectStack) throws IOException, ClassNotFoundException {
|
|
int size = LongPacker.unpackInt(is);
|
|
ArrayList<Object> s = new ArrayList<Object>(size);
|
|
objectStack.add(s);
|
|
for (int i = 0; i < size; i++) {
|
|
s.add(deserialize(is, objectStack));
|
|
}
|
|
return s;
|
|
}
|
|
|
|
private ArrayList<Object> deserializeArrayListPackedLong(DataInput is) throws IOException, ClassNotFoundException {
|
|
int size = is.readUnsignedByte();
|
|
if (size < 0)
|
|
throw new EOFException();
|
|
|
|
ArrayList<Object> s = new ArrayList<Object>(size);
|
|
for (int i = 0; i < size; i++) {
|
|
long l = LongPacker.unpackLong(is);
|
|
if (l == 0)
|
|
s.add(null);
|
|
else
|
|
s.add(Long.valueOf(l - 1));
|
|
}
|
|
return s;
|
|
}
|
|
|
|
|
|
private java.util.LinkedList deserializeLinkedList(DataInput is, FastArrayList objectStack) throws IOException, ClassNotFoundException {
|
|
int size = LongPacker.unpackInt(is);
|
|
java.util.LinkedList s = new java.util.LinkedList();
|
|
objectStack.add(s);
|
|
for (int i = 0; i < size; i++)
|
|
s.add(deserialize(is, objectStack));
|
|
return s;
|
|
}
|
|
|
|
|
|
private Vector<Object> deserializeVector(DataInput is, FastArrayList objectStack) throws IOException, ClassNotFoundException {
|
|
int size = LongPacker.unpackInt(is);
|
|
Vector<Object> s = new Vector<Object>(size);
|
|
objectStack.add(s);
|
|
for (int i = 0; i < size; i++)
|
|
s.add(deserialize(is, objectStack));
|
|
return s;
|
|
}
|
|
|
|
|
|
private HashSet<Object> deserializeHashSet(DataInput is, FastArrayList objectStack) throws IOException, ClassNotFoundException {
|
|
int size = LongPacker.unpackInt(is);
|
|
HashSet<Object> s = new HashSet<Object>(size);
|
|
objectStack.add(s);
|
|
for (int i = 0; i < size; i++)
|
|
s.add(deserialize(is, objectStack));
|
|
return s;
|
|
}
|
|
|
|
|
|
private LinkedHashSet<Object> deserializeLinkedHashSet(DataInput is, FastArrayList objectStack) throws IOException, ClassNotFoundException {
|
|
int size = LongPacker.unpackInt(is);
|
|
LinkedHashSet<Object> s = new LinkedHashSet<Object>(size);
|
|
objectStack.add(s);
|
|
for (int i = 0; i < size; i++)
|
|
s.add(deserialize(is, objectStack));
|
|
return s;
|
|
}
|
|
|
|
|
|
private TreeSet<Object> deserializeTreeSet(DataInput is, FastArrayList objectStack) throws IOException, ClassNotFoundException {
|
|
int size = LongPacker.unpackInt(is);
|
|
TreeSet<Object> s = new TreeSet<Object>();
|
|
objectStack.add(s);
|
|
Comparator comparator = (Comparator) deserialize(is, objectStack);
|
|
if (comparator != null)
|
|
s = new TreeSet<Object>(comparator);
|
|
|
|
for (int i = 0; i < size; i++)
|
|
s.add(deserialize(is, objectStack));
|
|
return s;
|
|
}
|
|
|
|
|
|
private TreeMap<Object, Object> deserializeTreeMap(DataInput is, FastArrayList objectStack) throws IOException, ClassNotFoundException {
|
|
int size = LongPacker.unpackInt(is);
|
|
|
|
TreeMap<Object, Object> s = new TreeMap<Object, Object>();
|
|
objectStack.add(s);
|
|
Comparator comparator = (Comparator) deserialize(is, objectStack);
|
|
if (comparator != null)
|
|
s = new TreeMap<Object, Object>(comparator);
|
|
for (int i = 0; i < size; i++)
|
|
s.put(deserialize(is, objectStack), deserialize(is, objectStack));
|
|
return s;
|
|
}
|
|
|
|
|
|
private HashMap<Object, Object> deserializeHashMap(DataInput is, FastArrayList objectStack) throws IOException, ClassNotFoundException {
|
|
int size = LongPacker.unpackInt(is);
|
|
|
|
HashMap<Object, Object> s = new HashMap<Object, Object>(size);
|
|
objectStack.add(s);
|
|
for (int i = 0; i < size; i++)
|
|
s.put(deserialize(is, objectStack), deserialize(is, objectStack));
|
|
return s;
|
|
}
|
|
|
|
private IdentityHashMap<Object, Object> deserializeIdentityHashMap(DataInput is, FastArrayList objectStack) throws IOException, ClassNotFoundException {
|
|
int size = LongPacker.unpackInt(is);
|
|
|
|
IdentityHashMap<Object, Object> s = new IdentityHashMap<Object, Object>(size);
|
|
objectStack.add(s);
|
|
for (int i = 0; i < size; i++)
|
|
s.put(deserialize(is, objectStack), deserialize(is, objectStack));
|
|
return s;
|
|
}
|
|
|
|
private LinkedHashMap<Object, Object> deserializeLinkedHashMap(DataInput is, FastArrayList objectStack) throws IOException, ClassNotFoundException {
|
|
int size = LongPacker.unpackInt(is);
|
|
|
|
LinkedHashMap<Object, Object> s = new LinkedHashMap<Object, Object>(size);
|
|
objectStack.add(s);
|
|
for (int i = 0; i < size; i++)
|
|
s.put(deserialize(is, objectStack), deserialize(is, objectStack));
|
|
return s;
|
|
}
|
|
|
|
|
|
private Hashtable<Object, Object> deserializeHashtable(DataInput is, FastArrayList objectStack) throws IOException, ClassNotFoundException {
|
|
int size = LongPacker.unpackInt(is);
|
|
|
|
Hashtable<Object, Object> s = new Hashtable<Object, Object>(size);
|
|
objectStack.add(s);
|
|
for (int i = 0; i < size; i++)
|
|
s.put(deserialize(is, objectStack), deserialize(is, objectStack));
|
|
return s;
|
|
}
|
|
|
|
|
|
private Properties deserializeProperties(DataInput is, FastArrayList objectStack) throws IOException, ClassNotFoundException {
|
|
int size = LongPacker.unpackInt(is);
|
|
|
|
Properties s = new Properties();
|
|
objectStack.add(s);
|
|
for (int i = 0; i < size; i++)
|
|
s.put(deserialize(is, objectStack), deserialize(is, objectStack));
|
|
return s;
|
|
}
|
|
|
|
|
|
/**
|
|
* Utility class similar to ArrayList, but with fast identity search.
|
|
*/
|
|
static class FastArrayList<K> {
|
|
|
|
private int size = 0;
|
|
private K[] elementData = (K[]) new Object[8];
|
|
|
|
K get(int index) {
|
|
if (index >= size) throw new IndexOutOfBoundsException();
|
|
return elementData[index];
|
|
}
|
|
|
|
void add(K o) {
|
|
if (elementData.length == size) {
|
|
//grow array if necessary
|
|
elementData = Arrays.copyOf(elementData, elementData.length * 2);
|
|
}
|
|
|
|
elementData[size] = o;
|
|
size++;
|
|
}
|
|
|
|
int size() {
|
|
return size;
|
|
}
|
|
|
|
|
|
/**
|
|
* This method is reason why ArrayList is not used.
|
|
* Search an item in list and returns its index.
|
|
* It uses identity rather than 'equalsTo'
|
|
* One could argue that TreeMap should be used instead,
|
|
* but we do not expect large object trees.
|
|
* This search is VERY FAST compared to Maps, it does not allocate
|
|
* new instances or uses method calls.
|
|
*
|
|
* @param obj
|
|
* @return index of object in list or -1 if not found
|
|
*/
|
|
int identityIndexOf(Object obj) {
|
|
for (int i = 0; i < size; i++) {
|
|
if (obj == elementData[i])
|
|
return i;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
} |