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org.jboss.marshalling.cloner.SerializingCloner Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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 org.jboss.marshalling.cloner;
import static java.lang.System.getSecurityManager;
import static java.security.AccessController.doPrivileged;
import java.io.ByteArrayOutputStream;
import java.io.EOFException;
import java.io.Externalizable;
import java.io.File;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.io.InvalidObjectException;
import java.io.NotActiveException;
import java.io.NotSerializableException;
import java.io.ObjectInputValidation;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.io.ObjectStreamClass;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Proxy;
import java.lang.reflect.UndeclaredThrowableException;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.ArrayDeque;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.IdentityHashMap;
import java.util.Map;
import java.util.Queue;
import java.util.Set;
import java.util.regex.Pattern;
import org.jboss.marshalling.AbstractObjectInput;
import org.jboss.marshalling.AbstractObjectOutput;
import org.jboss.marshalling.ByteInput;
import org.jboss.marshalling.ByteOutput;
import org.jboss.marshalling.Marshaller;
import org.jboss.marshalling.MarshallerObjectInputStream;
import org.jboss.marshalling.MarshallerObjectOutputStream;
import org.jboss.marshalling.Marshalling;
import org.jboss.marshalling.ObjectResolver;
import org.jboss.marshalling.SerializabilityChecker;
import org.jboss.marshalling.Unmarshaller;
import org.jboss.marshalling._private.GetDeclaredFieldAction;
import org.jboss.marshalling._private.GetUnsafeAction;
import org.jboss.marshalling.reflect.SerializableClass;
import org.jboss.marshalling.reflect.SerializableClassRegistry;
import org.jboss.marshalling.reflect.SerializableField;
import org.jboss.marshalling.util.BooleanReadField;
import org.jboss.marshalling.util.ByteReadField;
import org.jboss.marshalling.util.CharReadField;
import org.jboss.marshalling.util.DoubleReadField;
import org.jboss.marshalling.util.FloatReadField;
import org.jboss.marshalling.util.IdentityIntMap;
import org.jboss.marshalling.util.IntReadField;
import org.jboss.marshalling.util.Kind;
import org.jboss.marshalling.util.LongReadField;
import org.jboss.marshalling.util.ObjectReadField;
import org.jboss.marshalling.util.ReadField;
import org.jboss.marshalling.util.ShortReadField;
import sun.misc.Unsafe;
/**
* An object cloner which uses serialization methods to clone objects.
*/
class SerializingCloner implements ObjectCloner {
private final CloneTable delegate;
private final ObjectResolver objectResolver;
private final ObjectResolver objectPreResolver;
private final ClassCloner classCloner;
private final SerializabilityChecker serializabilityChecker;
private final int bufferSize;
private final SerializableClassRegistry registry;
/**
* Create a new instance.
*
* @param configuration the configuration to use
*/
SerializingCloner(final ClonerConfiguration configuration) {
final CloneTable delegate = configuration.getCloneTable();
this.delegate = delegate == null ? CloneTable.NULL : delegate;
final ObjectResolver objectResolver = configuration.getObjectResolver();
this.objectResolver = objectResolver == null ? Marshalling.nullObjectResolver() : objectResolver;
final ObjectResolver objectPreResolver = configuration.getObjectPreResolver();
this.objectPreResolver = objectPreResolver == null ? Marshalling.nullObjectResolver() : objectPreResolver;
final ClassCloner classCloner = configuration.getClassCloner();
this.classCloner = classCloner == null ? ClassCloner.IDENTITY : classCloner;
final SerializabilityChecker serializabilityChecker = configuration.getSerializabilityChecker();
this.serializabilityChecker = serializabilityChecker == null ? SerializabilityChecker.DEFAULT : serializabilityChecker;
final int bufferSize = configuration.getBufferSize();
this.bufferSize = bufferSize < 1 ? 8192 : bufferSize;
registry = SerializableClassRegistry.getInstance();
}
private final IdentityHashMap clones = new IdentityHashMap();
public void reset() {
synchronized (this) {
clones.clear();
}
}
public Object clone(final Object orig) throws IOException, ClassNotFoundException {
synchronized (this) {
boolean ok = false;
try {
final Object clone = clone(orig, true);
ok = true;
return clone;
} finally {
if (! ok) {
reset();
}
}
}
}
private Object clone(final Object orig, final boolean replace) throws IOException, ClassNotFoundException {
if (orig == null) {
return null;
}
if (Thread.currentThread().isInterrupted()) {
throw new InterruptedIOException("Thread interrupted during cloning process");
}
final IdentityHashMap clones = this.clones;
Object cached = clones.get(orig);
if (cached != null) {
return cached;
}
Object replaced = orig;
replaced = objectPreResolver.writeReplace(replaced);
final ClassCloner classCloner = this.classCloner;
if (replaced instanceof Class) {
final Class classObj = (Class) replaced;
final Class clonedClass = Proxy.isProxyClass(classObj) ? classCloner.cloneProxy(classObj) : classCloner.clone(classObj);
clones.put(replaced, clonedClass);
return clonedClass;
}
if ((cached = delegate.clone(replaced, this, classCloner)) != null) {
clones.put(replaced, cached);
return cached;
}
final Class objClass = replaced.getClass();
final SerializableClass info = registry.lookup(objClass);
if (replace) {
if (info.hasWriteReplace()) {
replaced = info.callWriteReplace(replaced);
}
replaced = objectResolver.writeReplace(replaced);
if (replaced != orig) {
Object clone = clone(replaced, false);
clones.put(orig, clone);
return clone;
}
}
final Class clonedClass = (Class) clone(objClass);
final boolean sameClass = objClass == clonedClass;
if (orig instanceof Enum) {
if (sameClass) {
// same class means same enum constants
return orig;
} else {
final Class cloneEnumClass;
//the actual object class may be a sub class of the enum class
final Class enumClass = ((Enum) orig).getDeclaringClass();
if(enumClass == objClass) {
cloneEnumClass = clonedClass.asSubclass(Enum.class);
} else{
cloneEnumClass = ((Class)clone(enumClass)).asSubclass(Enum.class);
}
return Enum.valueOf(cloneEnumClass, ((Enum) orig).name());
}
}
if (Proxy.isProxyClass(objClass)) {
return Proxy.newProxyInstance(clonedClass.getClassLoader(), clonedClass.getInterfaces(), (InvocationHandler) clone(getInvocationHandler(orig)));
}
if (UNCLONED.contains(objClass)) {
return orig;
}
if (objClass.isArray()) {
Object simpleClone = simpleClone(orig, objClass);
if (simpleClone != null) return simpleClone;
// must be an object array
final Object[] origArray = (Object[]) orig;
final int len = origArray.length;
if (sameClass && len == 0) {
clones.put(orig, orig);
return orig;
}
if (UNCLONED.contains(objClass.getComponentType())) {
final Object[] clone = origArray.clone();
clones.put(orig, clone);
return clone;
}
final Object[] clone;
if (sameClass) {
clone = origArray.clone();
} else {
clone = (Object[])Array.newInstance(clonedClass.getComponentType(), len);
}
// deep clone
clones.put(orig, clone);
for (int i = 0; i < len; i++) {
clone[i] = clone(origArray[i]);
}
return clone;
}
final SerializableClass cloneInfo = sameClass ? info : registry.lookup(clonedClass);
// Now check the serializable types
final Object clone;
if (orig instanceof Externalizable) {
final Externalizable externalizable = (Externalizable) orig;
clone = cloneInfo.callNoArgConstructor();
clones.put(orig, clone);
final Queue steps = new ArrayDeque();
final StepObjectOutput soo = new StepObjectOutput(steps);
externalizable.writeExternal(soo);
soo.doFinish();
((Externalizable) clone).readExternal(new StepObjectInput(steps));
} else if (serializabilityChecker.isSerializable(clonedClass)) {
Class nonSerializable;
for (nonSerializable = clonedClass.getSuperclass(); serializabilityChecker.isSerializable(nonSerializable); nonSerializable = nonSerializable.getSuperclass()) {
if (nonSerializable == Object.class) break;
}
clone = cloneInfo.callNonInitConstructor(nonSerializable);
final Class cloneClass = clone.getClass();
if (! (serializabilityChecker.isSerializable(cloneClass))) {
throw new NotSerializableException(cloneClass.getName());
}
clones.put(orig, clone);
initSerializableClone(orig, info, clone, cloneInfo);
} else {
throw new NotSerializableException(objClass.getName());
}
replaced = clone;
if (cloneInfo.hasReadResolve()) {
replaced = cloneInfo.callReadResolve(replaced);
}
replaced = objectPreResolver.readResolve(objectResolver.readResolve(replaced));
if (replaced != clone) clones.put(orig, replaced);
return replaced;
}
private void initSerializableClone(final Object orig, final SerializableClass origInfo, final Object clone, final SerializableClass cloneInfo) throws IOException, ClassNotFoundException {
final Class cloneClass = cloneInfo.getSubjectClass();
if (! serializabilityChecker.isSerializable(cloneClass)) {
throw new NotSerializableException(cloneClass.getName());
}
final Class cloneSuperClass = cloneClass.getSuperclass();
final Class origClass = origInfo.getSubjectClass();
// first, init the serializable superclass, if any
final Class origSuperClass = origClass.getSuperclass();
if (serializabilityChecker.isSerializable(origSuperClass) || serializabilityChecker.isSerializable(cloneSuperClass)) {
initSerializableClone(orig, registry.lookup(origSuperClass), clone, registry.lookup(cloneSuperClass));
}
if (cloneClass != origClass && cloneClass != clone(origClass)) {
if (cloneInfo.hasReadObjectNoData()) {
cloneInfo.callReadObjectNoData(clone);
}
return;
}
if (! serializabilityChecker.isSerializable(origClass)) {
if (cloneInfo.hasReadObjectNoData()) {
cloneInfo.callReadObjectNoData(clone);
}
return;
}
final ClonerPutField fields = new ClonerPutField();
fields.defineFields(origInfo);
if (origInfo.hasWriteObject()) {
final Queue steps = new ArrayDeque();
final StepObjectOutputStream stepObjectOutputStream = createStepObjectOutputStream(orig, fields, steps);
origInfo.callWriteObject(orig, stepObjectOutputStream);
stepObjectOutputStream.flush();
stepObjectOutputStream.doFinish();
cloneFields(fields);
if (cloneInfo.hasReadObject()) {
cloneInfo.callReadObject(clone, createStepObjectInputStream(clone, cloneInfo, fields, steps));
} else {
storeFields(cloneInfo, clone, fields);
}
} else {
prepareFields(orig, fields);
cloneFields(fields);
if (cloneInfo.hasReadObject()) {
cloneInfo.callReadObject(clone, createStepObjectInputStream(clone, cloneInfo, fields, new ArrayDeque()));
} else {
storeFields(cloneInfo, clone, fields);
}
}
}
private StepObjectInputStream createStepObjectInputStream(final Object clone, final SerializableClass cloneInfo, final ClonerPutField fields, final Queue steps) throws IOException {
try {
return getSecurityManager() == null ? new StepObjectInputStream(steps, fields, clone, cloneInfo) : doPrivileged(new PrivilegedExceptionAction() {
public StepObjectInputStream run() throws Exception {
return new StepObjectInputStream(steps, fields, clone, cloneInfo);
}
});
} catch (PrivilegedActionException e) {
try {
throw e.getCause();
} catch (IOException ioe) {
throw ioe;
} catch (RuntimeException re) {
throw re;
} catch (Error er) {
throw er;
} catch (Throwable throwable) {
throw new UndeclaredThrowableException(throwable);
}
}
}
private StepObjectOutputStream createStepObjectOutputStream(final Object orig, final ClonerPutField fields, final Queue steps) throws IOException {
try {
return getSecurityManager() == null ? new StepObjectOutputStream(steps, fields, orig) : doPrivileged(new PrivilegedExceptionAction() {
public StepObjectOutputStream run() throws IOException {
return new StepObjectOutputStream(steps, fields, orig);
}
});
} catch (PrivilegedActionException e) {
try {
throw e.getCause();
} catch (IOException ioe) {
throw ioe;
} catch (RuntimeException re) {
throw re;
} catch (Error er) {
throw er;
} catch (Throwable throwable) {
throw new UndeclaredThrowableException(throwable);
}
}
}
private void prepareFields(final Object subject, final ClonerPutField fields) throws InvalidObjectException {
final Map defMap = fields.fieldDefMap;
final Map map = fields.fieldMap;
for (String name : defMap.keySet()) {
final SerializableField serializableField = defMap.get(name);
if (serializableField.isAccessible()) switch (serializableField.getKind()) {
case BOOLEAN: map.put(name, new BooleanReadField(serializableField, serializableField.getBoolean(subject))); continue;
case BYTE: map.put(name, new ByteReadField(serializableField, serializableField.getByte(subject))); continue;
case CHAR: map.put(name, new CharReadField(serializableField, serializableField.getChar(subject))); continue;
case DOUBLE: map.put(name, new DoubleReadField(serializableField, serializableField.getDouble(subject))); continue;
case FLOAT: map.put(name, new FloatReadField(serializableField, serializableField.getFloat(subject))); continue;
case INT: map.put(name, new IntReadField(serializableField, serializableField.getInt(subject))); continue;
case LONG: map.put(name, new LongReadField(serializableField, serializableField.getLong(subject))); continue;
case OBJECT: map.put(name, new ObjectReadField(serializableField, serializableField.getObject(subject))); continue;
case SHORT: map.put(name, new ShortReadField(serializableField, serializableField.getShort(subject))); continue;
default: throw new IllegalStateException();
}
}
}
private void cloneFields(final ClonerPutField fields) throws IOException, ClassNotFoundException {
final Map defMap = fields.fieldDefMap;
final Map map = fields.fieldMap;
for (String name : defMap.keySet()) {
final SerializableField field = defMap.get(name);
// only clone object field if it has been serialized
if (field.getKind() == Kind.OBJECT && map.get(name) != null) {
map.put(name, new ObjectReadField(field, clone(map.get(name).getObject())));
continue;
}
}
}
private void storeFields(final SerializableClass cloneInfo, final Object clone, final ClonerPutField fields) throws IOException {
final Map map = fields.fieldMap;
for (SerializableField cloneField : cloneInfo.getFields()) {
final String name = cloneField.getName();
final ReadField field = map.get(name);
if (cloneField.isAccessible()) switch (cloneField.getKind()) {
case BOOLEAN: cloneField.setBoolean(clone, field == null ? false : field.getBoolean()); continue;
case BYTE: cloneField.setByte(clone, field == null ? 0 : field.getByte()); continue;
case CHAR: cloneField.setChar(clone, field == null ? 0 : field.getChar()); continue;
case DOUBLE: cloneField.setDouble(clone, field == null ? 0 : field.getDouble()); continue;
case FLOAT: cloneField.setFloat(clone, field == null ? 0 : field.getFloat()); continue;
case INT: cloneField.setInt(clone, field == null ? 0 : field.getInt()); continue;
case LONG: cloneField.setLong(clone, field == null ? 0 : field.getLong()); continue;
case OBJECT: cloneField.setObject(clone, field == null ? null : field.getObject()); continue;
case SHORT: cloneField.setShort(clone, field == null ? 0 : field.getShort()); continue;
default: throw new IllegalStateException();
}
}
}
private static Object simpleClone(final Object orig, final Class objClass) {
final int idx = PRIMITIVE_ARRAYS.get(objClass, -1);
switch (idx) {
case 0: {
final boolean[] booleans = (boolean[]) orig;
return booleans.length == 0 ? orig : booleans.clone();
}
case 1: {
final byte[] bytes = (byte[]) orig;
return bytes.length == 0 ? orig : bytes.clone();
}
case 2: {
final short[] shorts = (short[]) orig;
return shorts.length == 0 ? orig : shorts.clone();
}
case 3: {
final int[] ints = (int[]) orig;
return ints.length == 0 ? orig : ints.clone();
}
case 4: {
final long[] longs = (long[]) orig;
return longs.length == 0 ? orig : longs.clone();
}
case 5: {
final float[] floats = (float[]) orig;
return floats.length == 0 ? orig : floats.clone();
}
case 6: {
final double[] doubles = (double[]) orig;
return doubles.length == 0 ? orig : doubles.clone();
}
case 7: {
final char[] chars = (char[]) orig;
return chars.length == 0 ? orig : chars.clone();
}
default: return null; // fall out
}
}
private static InvocationHandler getInvocationHandler(final Object orig) {
return (InvocationHandler) unsafe.getObjectVolatile(orig, proxyInvocationHandlerOffset);
}
private abstract static class Step {
}
private static final Set> UNCLONED;
private static final IdentityIntMap> PRIMITIVE_ARRAYS;
private static final Unsafe unsafe;
private static final Field proxyInvocationHandler;
private static final long proxyInvocationHandlerOffset;
static {
final Set> set = new HashSet>();
// List of final, immutable, serializable JDK classes with no external references to mutable items
// These items can be sent back by reference and the caller will never know
set.add(Boolean.class);
set.add(Byte.class);
set.add(Short.class);
set.add(Integer.class);
set.add(Long.class);
set.add(Float.class);
set.add(Double.class);
set.add(Character.class);
set.add(String.class);
set.add(StackTraceElement.class);
set.add(BigInteger.class);
set.add(BigDecimal.class);
set.add(Pattern.class);
set.add(File.class);
set.add(Collections.emptyList().getClass());
set.add(Collections.emptySet().getClass());
set.add(Collections.emptyMap().getClass());
UNCLONED = set;
final IdentityIntMap> map = new IdentityIntMap>();
// List of cloneable, non-extensible, serializable JDK classes with no external references to mutable items
// These items can be deeply cloned by a single method call, without worrying about the classloader
map.put(boolean[].class, 0);
map.put(byte[].class, 1);
map.put(short[].class, 2);
map.put(int[].class, 3);
map.put(long[].class, 4);
map.put(float[].class, 5);
map.put(double[].class, 6);
map.put(char[].class, 7);
PRIMITIVE_ARRAYS = map;
final Field field;
final SecurityManager sm = getSecurityManager();
field = sm == null ? new GetDeclaredFieldAction(Proxy.class, "h").run() : doPrivileged(new GetDeclaredFieldAction(Proxy.class, "h"));
unsafe = sm == null ? GetUnsafeAction.INSTANCE.run() : doPrivileged(GetUnsafeAction.INSTANCE);
proxyInvocationHandler = field;
proxyInvocationHandlerOffset = unsafe.objectFieldOffset(proxyInvocationHandler);
}
class StepObjectOutput extends AbstractObjectOutput implements Marshaller {
private final Queue steps;
private final ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
StepObjectOutput(final Queue steps) throws IOException {
super(SerializingCloner.this.bufferSize);
this.steps = steps;
super.start(Marshalling.createByteOutput(byteArrayOutputStream));
}
protected void doWriteObject(final Object obj, final boolean unshared) throws IOException {
super.flush();
final ByteArrayOutputStream baos = byteArrayOutputStream;
if (baos.size() > 0) {
steps.add(new ByteDataStep(baos.toByteArray()));
baos.reset();
}
steps.add(new CloneStep(obj));
}
public void clearInstanceCache() throws IOException {
throw new UnsupportedOperationException();
}
public void clearClassCache() throws IOException {
throw new UnsupportedOperationException();
}
public void start(final ByteOutput byteOutput) throws IOException {
throw new UnsupportedOperationException();
}
public void finish() throws IOException {
throw new UnsupportedOperationException();
}
void doFinish() throws IOException {
super.finish();
}
public void flush() throws IOException {
super.flush();
final ByteArrayOutputStream baos = byteArrayOutputStream;
if (baos.size() > 0) {
steps.add(new ByteDataStep(baos.toByteArray()));
baos.reset();
}
}
}
class StepObjectOutputStream extends MarshallerObjectOutputStream {
private final Queue steps;
private final ClonerPutField clonerPutField;
private final Object subject;
private final StepObjectOutput output;
private StepObjectOutputStream(StepObjectOutput output, final Queue steps, final ClonerPutField clonerPutField, final Object subject) throws IOException {
super(output);
this.output = output;
this.steps = steps;
this.clonerPutField = clonerPutField;
this.subject = subject;
}
StepObjectOutputStream(final Queue steps, final ClonerPutField clonerPutField, final Object subject) throws IOException {
this(new StepObjectOutput(steps), steps, clonerPutField, subject);
}
public void writeFields() throws IOException {
if (! steps.isEmpty()) {
throw new IllegalStateException("writeFields may not be called in this context");
}
}
public PutField putFields() throws IOException {
if (! steps.isEmpty()) {
throw new IllegalStateException("putFields may not be called in this context");
}
return clonerPutField;
}
public void defaultWriteObject() throws IOException {
if (! steps.isEmpty()) {
throw new IllegalStateException("defaultWriteObject may not be called in this context");
}
final Object subject = this.subject;
final SerializingCloner.ClonerPutField fields = clonerPutField;
prepareFields(subject, fields);
}
void doFinish() throws IOException {
output.doFinish();
}
}
class StepObjectInputStream extends MarshallerObjectInputStream {
private final ClonerPutField clonerPutField;
private final Object clone;
private final SerializableClass cloneInfo;
StepObjectInputStream(final Queue steps, final ClonerPutField clonerPutField, final Object clone, final SerializableClass cloneInfo) throws IOException {
super(new StepObjectInput(steps));
this.clonerPutField = clonerPutField;
this.clone = clone;
this.cloneInfo = cloneInfo;
}
public void defaultReadObject() throws IOException, ClassNotFoundException {
storeFields(cloneInfo, clone, clonerPutField);
}
public GetField readFields() throws IOException, ClassNotFoundException {
return new GetField() {
public ObjectStreamClass getObjectStreamClass() {
throw new UnsupportedOperationException();
}
public boolean defaulted(final String name) throws IOException {
final ReadField field = clonerPutField.fieldMap.get(name);
return field == null || field.isDefaulted();
}
public boolean get(final String name, final boolean val) throws IOException {
final ReadField field = clonerPutField.fieldMap.get(name);
return field == null || field.isDefaulted() ? val : field.getBoolean();
}
public byte get(final String name, final byte val) throws IOException {
final ReadField field = clonerPutField.fieldMap.get(name);
return field == null || field.isDefaulted() ? val : field.getByte();
}
public char get(final String name, final char val) throws IOException {
final ReadField field = clonerPutField.fieldMap.get(name);
return field == null || field.isDefaulted() ? val : field.getChar();
}
public short get(final String name, final short val) throws IOException {
final ReadField field = clonerPutField.fieldMap.get(name);
return field == null || field.isDefaulted() ? val : field.getShort();
}
public int get(final String name, final int val) throws IOException {
final ReadField field = clonerPutField.fieldMap.get(name);
return field == null || field.isDefaulted() ? val : field.getInt();
}
public long get(final String name, final long val) throws IOException {
final ReadField field = clonerPutField.fieldMap.get(name);
return field == null || field.isDefaulted() ? val : field.getLong();
}
public float get(final String name, final float val) throws IOException {
final ReadField field = clonerPutField.fieldMap.get(name);
return field == null || field.isDefaulted() ? val : field.getFloat();
}
public double get(final String name, final double val) throws IOException {
final ReadField field = clonerPutField.fieldMap.get(name);
return field == null || field.isDefaulted() ? val : field.getDouble();
}
public Object get(final String name, final Object val) throws IOException {
final ReadField field = clonerPutField.fieldMap.get(name);
return field == null || field.isDefaulted() ? val : field.getObject();
}
};
}
public void registerValidation(final ObjectInputValidation obj, final int priority) throws NotActiveException, InvalidObjectException {
}
}
class ClonerPutField extends ObjectOutputStream.PutField {
private final Map fieldDefMap = new HashMap();
private final Map fieldMap = new HashMap();
private SerializableField getField(final String name, final Kind kind) {
final SerializableField field = fieldDefMap.get(name);
if (field == null) {
throw new IllegalArgumentException("No field named '" + name + "' could be found");
}
if (field.getKind() != kind) {
throw new IllegalArgumentException("Field '" + name + "' is the wrong type (expected " + kind + ", got " + field.getKind() + ")");
}
return field;
}
private void defineFields(final SerializableClass clazz) {
for (SerializableField field : clazz.getFields()) {
fieldDefMap.put(field.getName(), field);
}
}
public void put(final String name, final boolean val) {
fieldMap.put(name, new BooleanReadField(getField(name, Kind.BOOLEAN), val));
}
public void put(final String name, final byte val) {
fieldMap.put(name, new ByteReadField(getField(name, Kind.BYTE), val));
}
public void put(final String name, final char val) {
fieldMap.put(name, new CharReadField(getField(name, Kind.CHAR), val));
}
public void put(final String name, final short val) {
fieldMap.put(name, new ShortReadField(getField(name, Kind.SHORT), val));
}
public void put(final String name, final int val) {
fieldMap.put(name, new IntReadField(getField(name, Kind.INT), val));
}
public void put(final String name, final long val) {
fieldMap.put(name, new LongReadField(getField(name, Kind.LONG), val));
}
public void put(final String name, final float val) {
fieldMap.put(name, new FloatReadField(getField(name, Kind.FLOAT), val));
}
public void put(final String name, final double val) {
fieldMap.put(name, new DoubleReadField(getField(name, Kind.DOUBLE), val));
}
public void put(final String name, final Object val) {
fieldMap.put(name, new ObjectReadField(getField(name, Kind.OBJECT), val));
}
@Deprecated
public void write(final ObjectOutput out) throws IOException {
throw new UnsupportedOperationException();
}
}
class StepObjectInput extends AbstractObjectInput implements Unmarshaller {
private final Queue steps;
private Step current;
private int idx;
StepObjectInput(final Queue steps) throws IOException {
super(bufferSize);
this.steps = steps;
current = steps.poll();
super.start(new ByteInput() {
public int read() throws IOException {
while (current != null) {
if (current instanceof ByteDataStep) {
final ByteDataStep step = (ByteDataStep) current;
final byte[] bytes = step.getBytes();
if (idx == bytes.length) {
current = steps.poll();
idx = 0;
} else {
final byte b = bytes[idx++];
return b & 0xff;
}
} else {
// an object is pending
return -1;
}
}
return -1;
}
public int read(final byte[] b) throws IOException {
return read(b, 0, b.length);
}
public int read(final byte[] b, int off, int len) throws IOException {
if (len == 0) return 0;
int t = 0;
while (current != null && len > 0) {
if (current instanceof ByteDataStep) {
final ByteDataStep step = (ByteDataStep) current;
final byte[] bytes = step.getBytes();
final int blen = bytes.length;
if (idx == blen) {
current = steps.poll();
idx = 0;
} else {
final int c = Math.min(blen - idx, len);
System.arraycopy(bytes, idx, b, off, c);
idx += c;
off += c;
len -= c;
t += c;
if (idx == blen) {
current = steps.poll();
idx = 0;
}
}
} else {
// an object is pending
return t == 0 ? -1 : t;
}
}
return t == 0 ? -1 : t;
}
public int available() throws IOException {
return current instanceof ByteDataStep ? ((ByteDataStep) current).getBytes().length - idx : 0;
}
public long skip(long n) throws IOException {
long t = 0;
while (current != null && n > 0) {
if (current instanceof ByteDataStep) {
final ByteDataStep step = (ByteDataStep) current;
final byte[] bytes = step.getBytes();
final int blen = bytes.length;
if (idx == blen) {
current = steps.poll();
idx = 0;
} else {
final int c = (int) Math.min((long) blen - idx, n);
idx += c;
n -= c;
if (idx == blen) {
current = steps.poll();
idx = 0;
}
}
} else {
// an object is pending
return t;
}
}
return t;
}
public void close() throws IOException {
current = null;
}
});
}
protected Object doReadObject(final boolean unshared) throws ClassNotFoundException, IOException {
Step step = current;
while (step instanceof ByteDataStep) {
step = steps.poll();
}
if (step == null) {
current = null;
throw new EOFException();
}
current = steps.poll();
// not really true, just IDEA being silly again
@SuppressWarnings("UnnecessaryThis")
final Object clone = SerializingCloner.this.clone(((CloneStep) step).getOrig());
return clone;
}
public void finish() throws IOException {
throw new UnsupportedOperationException();
}
public void start(final ByteInput byteInput) throws IOException {
throw new UnsupportedOperationException();
}
public void clearInstanceCache() throws IOException {
throw new UnsupportedOperationException();
}
public void clearClassCache() throws IOException {
throw new UnsupportedOperationException();
}
}
private static final class ByteDataStep extends Step {
private final byte[] bytes;
private ByteDataStep(final byte[] bytes) {
this.bytes = bytes;
}
byte[] getBytes() {
return bytes;
}
}
private static final class CloneStep extends Step {
private final Object orig;
private CloneStep(final Object orig) {
this.orig = orig;
}
Object getOrig() {
return orig;
}
}
}
