Unmodifiable and Synchronized collections/maps now use injected class bytes

master
Robinson 2023-06-26 00:31:22 +02:00
parent cba890c623
commit fa707e9fda
No known key found for this signature in database
GPG Key ID: 8E7DB78588BD6F5C
4 changed files with 390 additions and 69 deletions

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@ -0,0 +1,36 @@
/*
* Copyright 2023 dorkbox, llc
*
* 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 dorkbox.serializers;
import java.lang.reflect.Field;
public
class SynchronizedCollectionJavaAccessor {
public static final Field SOURCE_MAP_FIELD = null;
// the class methods here are rewritten using javassist.
public static Object SynchronizedCollection_Field(Object nativeSynchronizedCollection) {
return null;
}
public static void initSynchronizedMap_Field() {
}
public static Object SynchronizedMap_Field(Object nativeSynchronizedMap) {
return null;
}
}

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@ -1,3 +1,19 @@
/*
* Copyright 2023 dorkbox, llc
*
* 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.
*/
/*
* Copyright 2010 Martin Grotzke
*
@ -37,29 +53,112 @@ import com.esotericsoftware.kryo.Serializer;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;
import dorkbox.jna.ClassUtils;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtMethod;
import javassist.CtNewMethod;
import javassist.Modifier;
/**
* A kryo {@link Serializer} for synchronized {@link Collection}s and {@link Map}s
* created via {@link Collections}.
*
* @author <a href="mailto:martin.grotzke@javakaffee.de">Martin Grotzke</a>
* @author <a href="mailto:email@dorkbox.com">Dorkbox llc</a>
*/
public class SynchronizedCollectionsSerializer extends Serializer<Object> {
private static final Field SOURCE_COLLECTION_FIELD;
private static final Field SOURCE_MAP_FIELD;
static {
try {
SOURCE_COLLECTION_FIELD = Class.forName("java.util.Collections$SynchronizedCollection" )
.getDeclaredField( "c" );
SOURCE_COLLECTION_FIELD.setAccessible( true );
SOURCE_MAP_FIELD = Class.forName("java.util.Collections$SynchronizedMap" )
.getDeclaredField( "m" );
SOURCE_MAP_FIELD.setAccessible( true );
/**
* Gets the version number.
*/
public static
String getVersion() {
return "3.0";
}
static {
dorkbox.updates.Updates.INSTANCE.add(SynchronizedCollectionsSerializer.class, "9e3f0fdbd0ac4e4ba887964733fe110a", getVersion());
try {
ClassPool pool = ClassPool.getDefault();
// allow non-reflection access to java.util.Collections...()
{
CtClass dynamicClass = pool.makeClass("java.util.SynchronizedCollectionsAccessory");
CtMethod method = CtNewMethod.make(
"public static Object getSynchronizedCollectionField(Object nativeComp) { " +
// "java.lang.System.err.println(\"Getting sync collection field!\" + ((java.util.Collections$SynchronizedCollection)nativeComp).c);" +
"return ((java.util.Collections$SynchronizedCollection)nativeComp).c;" +
"}", dynamicClass);
dynamicClass.addMethod(method);
method = CtNewMethod.make(
"public static java.lang.reflect.Field initSynchronizedMapField() { " +
"java.lang.reflect.Field field = Class.forName(\"java.util.Collections$SynchronizedMap\").getDeclaredField( \"m\" );" +
"field.setAccessible( true );" +
// "java.lang.System.err.println(\"updating sync map field!\");" +
"return field;" +
"}", dynamicClass);
dynamicClass.addMethod(method);
method = CtNewMethod.make(
"public static Object getSynchronizedMapField(java.lang.reflect.Field field, Object nativeComp) { " +
// "java.lang.System.err.println(\"Getting sync map field!\" + field.get(nativeComp));" +
"return field.get(nativeComp);" +
"}", dynamicClass);
dynamicClass.addMethod(method);
dynamicClass.setModifiers(dynamicClass.getModifiers() & ~Modifier.STATIC);
dynamicClass.getDeclaredMethods();
final byte[] dynamicClassBytes = dynamicClass.toBytecode();
ClassUtils.defineClass(null, dynamicClassBytes);
}
// fix the accessor class to point to the generated proxy/accessory class
{
CtClass classFixer = pool.get("dorkbox.serializers.SynchronizedCollectionJavaAccessor");
CtMethod ctMethod = classFixer.getDeclaredMethod("SynchronizedCollection_Field");
ctMethod.setBody("{" +
"return java.util.SynchronizedCollectionsAccessory.getSynchronizedCollectionField($1);" +
"}");
// perform pre-verification for the modified method
ctMethod.getMethodInfo().rebuildStackMapForME(pool);
ctMethod = classFixer.getDeclaredMethod("initSynchronizedMap_Field");
ctMethod.setBody("{" +
"dorkbox.serializers.SynchronizedCollectionJavaAccessor.SOURCE_MAP_FIELD = java.util.SynchronizedCollectionsAccessory.initSynchronizedMapField();" +
"}");
// perform pre-verification for the modified method
ctMethod.getMethodInfo().rebuildStackMapForME(pool);
ctMethod = classFixer.getDeclaredMethod("SynchronizedMap_Field");
ctMethod.setBody("{" +
"return java.util.SynchronizedCollectionsAccessory.getSynchronizedMapField(dorkbox.serializers.SynchronizedCollectionJavaAccessor.SOURCE_MAP_FIELD, $1);" +
"}");
// perform pre-verification for the modified method
ctMethod.getMethodInfo().rebuildStackMapForME(pool);
// perform pre-verification for the modified method
ctMethod.getMethodInfo().rebuildStackMapForME(pool);
final byte[] classFixerBytes = classFixer.toBytecode();
ClassUtils.defineClass(ClassLoader.getSystemClassLoader(), classFixerBytes);
}
// setup reflection, but it's done from INSIDE THE SAME PACKAGE (so no warnings/etc)
SynchronizedCollectionJavaAccessor.initSynchronizedMap_Field();
} catch ( final Exception e ) {
throw new RuntimeException( "Could not access source collection" +
" field in java.util.Collections$SynchronizedCollection.", e );
throw new RuntimeException( "Could not modify SynchronizedCollection", e );
}
}
@ -78,7 +177,7 @@ public class SynchronizedCollectionsSerializer extends Serializer<Object> {
// the ordinal could be replaced by something else (e.g. a explicitly managed "id")
output.writeInt( collection.ordinal(), true );
synchronized (object) {
kryo.writeClassAndObject( output, collection.sourceCollectionField.get( object ) );
kryo.writeClassAndObject( output, collection.getValue( object ) );
}
} catch ( final RuntimeException e ) {
// Don't eat and wrap RuntimeExceptions because the ObjectBuffer.write...
@ -93,7 +192,7 @@ public class SynchronizedCollectionsSerializer extends Serializer<Object> {
public Object copy(Kryo kryo, Object original) {
try {
final SynchronizedCollection collection = SynchronizedCollection.valueOfType( original.getClass() );
Object sourceCollectionCopy = kryo.copy(collection.sourceCollectionField.get(original));
Object sourceCollectionCopy = kryo.copy(collection.getValue(original));
return collection.create( sourceCollectionCopy );
} catch ( final RuntimeException e ) {
// Don't eat and wrap RuntimeExceptions
@ -104,63 +203,89 @@ public class SynchronizedCollectionsSerializer extends Serializer<Object> {
}
private static enum SynchronizedCollection {
COLLECTION( Collections.synchronizedCollection( Arrays.asList( "" ) ).getClass(), SOURCE_COLLECTION_FIELD ){
COLLECTION( Collections.synchronizedCollection( Arrays.asList( "" ) ).getClass() ){
@Override
public Object create( final Object sourceCollection ) {
return Collections.synchronizedCollection( (Collection<?>) sourceCollection );
}
@Override
public Object getValue( final Object sourceCollection ) {
return SynchronizedCollectionJavaAccessor.SynchronizedCollection_Field(sourceCollection );
}
},
RANDOM_ACCESS_LIST( Collections.synchronizedList( new ArrayList<Void>() ).getClass(), SOURCE_COLLECTION_FIELD ){
RANDOM_ACCESS_LIST( Collections.synchronizedList( new ArrayList<Void>() ).getClass() ){
@Override
public Object create( final Object sourceCollection ) {
return Collections.synchronizedList( (List<?>) sourceCollection );
}
@Override
public Object getValue( final Object sourceCollection ) {
return SynchronizedCollectionJavaAccessor.SynchronizedCollection_Field(sourceCollection );
}
},
LIST( Collections.synchronizedList( new LinkedList<Void>() ).getClass(), SOURCE_COLLECTION_FIELD ){
LIST( Collections.synchronizedList( new LinkedList<Void>() ).getClass() ){
@Override
public Object create( final Object sourceCollection ) {
return Collections.synchronizedList( (List<?>) sourceCollection );
}
@Override
public Object getValue( final Object sourceCollection ) {
return SynchronizedCollectionJavaAccessor.SynchronizedCollection_Field(sourceCollection );
}
},
SET( Collections.synchronizedSet( new HashSet<Void>() ).getClass(), SOURCE_COLLECTION_FIELD ){
SET( Collections.synchronizedSet( new HashSet<Void>() ).getClass() ){
@Override
public Object create( final Object sourceCollection ) {
return Collections.synchronizedSet( (Set<?>) sourceCollection );
}
@Override
public Object getValue( final Object sourceCollection ) {
return SynchronizedCollectionJavaAccessor.SynchronizedCollection_Field(sourceCollection );
}
},
SORTED_SET( Collections.synchronizedSortedSet( new TreeSet<Void>() ).getClass(), SOURCE_COLLECTION_FIELD ){
SORTED_SET( Collections.synchronizedSortedSet( new TreeSet<Void>() ).getClass() ){
@Override
public Object create( final Object sourceCollection ) {
return Collections.synchronizedSortedSet( (SortedSet<?>) sourceCollection );
}
@Override
public Object getValue( final Object sourceCollection ) {
return SynchronizedCollectionJavaAccessor.SynchronizedCollection_Field(sourceCollection );
}
},
MAP( Collections.synchronizedMap( new HashMap<Void, Void>() ).getClass(), SOURCE_MAP_FIELD ) {
MAP( Collections.synchronizedMap( new HashMap<Void, Void>() ).getClass() ) {
@Override
public Object create( final Object sourceCollection ) {
return Collections.synchronizedMap( (Map<?, ?>) sourceCollection );
}
@Override
public Object getValue( final Object sourceCollection ) {
return SynchronizedCollectionJavaAccessor.SynchronizedMap_Field(sourceCollection );
}
},
SORTED_MAP( Collections.synchronizedSortedMap( new TreeMap<Void, Void>() ).getClass(), SOURCE_MAP_FIELD ) {
SORTED_MAP( Collections.synchronizedSortedMap( new TreeMap<Void, Void>() ).getClass() ) {
@Override
public Object create( final Object sourceCollection ) {
return Collections.synchronizedSortedMap( (SortedMap<?, ?>) sourceCollection );
}
@Override
public Object getValue( final Object sourceCollection ) {
return SynchronizedCollectionJavaAccessor.SynchronizedMap_Field(sourceCollection );
}
};
private final Class<?> type;
private final Field sourceCollectionField;
private SynchronizedCollection( final Class<?> type, final Field sourceCollectionField ) {
private SynchronizedCollection( final Class<?> type ) {
this.type = type;
this.sourceCollectionField = sourceCollectionField;
}
/**
* @param sourceCollection
*/
public abstract Object create( Object sourceCollection );
public abstract Object getValue( Object sourceCollection );
static SynchronizedCollection valueOfType( final Class<?> type ) {
for( final SynchronizedCollection item : values() ) {

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@ -0,0 +1,36 @@
/*
* Copyright 2023 dorkbox, llc
*
* 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 dorkbox.serializers;
import java.lang.reflect.Field;
public
class UnmodifiableCollectionJavaAccessor {
public static final Field SOURCE_MAP_FIELD = null;
// the class methods here are rewritten using javassist.
public static Object UnmodifiableCollection_Field(Object nativeUnmodifiableCollection) {
return null;
}
public static void initUnmodifiableMap_Field() {
}
public static Object UnmodifiableMap_Field(Object nativeUnmodifiableMap) {
return null;
}
}

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@ -1,3 +1,19 @@
/*
* Copyright 2023 dorkbox, llc
*
* 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.
*/
/*
* Copyright 2010 Martin Grotzke
*
@ -16,9 +32,7 @@
*/
package dorkbox.serializers;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
@ -37,31 +51,114 @@ import com.esotericsoftware.kryo.Serializer;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;
import dorkbox.jna.ClassUtils;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtMethod;
import javassist.CtNewMethod;
import javassist.Modifier;
/**
* A kryo {@link Serializer} for unmodifiable {@link Collection}s and {@link Map}s
* created via {@link Collections}.
*
* @author <a href="mailto:martin.grotzke@javakaffee.de">Martin Grotzke</a>
* @author <a href="mailto:email@dorkbox.com">Dorkbox llc</a>
*/
public class UnmodifiableCollectionsSerializer extends Serializer<Object> {
private static final Field SOURCE_COLLECTION_FIELD;
private static final Field SOURCE_MAP_FIELD;
static {
try {
SOURCE_COLLECTION_FIELD = Class.forName("java.util.Collections$UnmodifiableCollection" )
.getDeclaredField( "c" );
SOURCE_COLLECTION_FIELD.setAccessible( true );
SOURCE_MAP_FIELD = Class.forName("java.util.Collections$UnmodifiableMap" )
.getDeclaredField( "m" );
SOURCE_MAP_FIELD.setAccessible( true );
/**
* Gets the version number.
*/
public static
String getVersion() {
return "3.0";
}
static {
// Add this project to the updates system, which verifies this class + UUID + version information
dorkbox.updates.Updates.INSTANCE.add(UnmodifiableCollectionsSerializer.class, "316353f5338341a8a3edc01d702703f8", getVersion());
try {
ClassPool pool = ClassPool.getDefault();
// allow non-reflection access to java.util.Collections...()
{
CtClass dynamicClass = pool.makeClass("java.util.UnmodifiableCollectionsAccessory");
CtMethod method = CtNewMethod.make(
"public static Object getUnmodifiableCollectionField(Object nativeComp) { " +
// "java.lang.System.err.println(\"Getting collection field!\" + ((java.util.Collections$UnmodifiableCollection)nativeComp).c);" +
"return ((java.util.Collections$UnmodifiableCollection)nativeComp).c;" +
"}", dynamicClass);
dynamicClass.addMethod(method);
method = CtNewMethod.make(
"public static java.lang.reflect.Field initUnmodifiableMapField() { " +
"java.lang.reflect.Field field = Class.forName(\"java.util.Collections$UnmodifiableMap\").getDeclaredField( \"m\" );" +
"field.setAccessible( true );" +
// "java.lang.System.err.println(\"updating map field!\");" +
"return field;" +
"}", dynamicClass);
dynamicClass.addMethod(method);
method = CtNewMethod.make(
"public static Object getUnmodifiableMapField(java.lang.reflect.Field field, Object nativeComp) { " +
// "java.lang.System.err.println(\"Getting map field!\" + field.get(nativeComp));" +
"return field.get(nativeComp);" +
"}", dynamicClass);
dynamicClass.addMethod(method);
dynamicClass.setModifiers(dynamicClass.getModifiers() & ~Modifier.STATIC);
dynamicClass.getDeclaredMethods();
final byte[] dynamicClassBytes = dynamicClass.toBytecode();
ClassUtils.defineClass(null, dynamicClassBytes);
}
// fix the accessor class to point to the generated proxy/accessory class
{
CtClass classFixer = pool.get("dorkbox.serializers.UnmodifiableCollectionJavaAccessor");
CtMethod ctMethod = classFixer.getDeclaredMethod("UnmodifiableCollection_Field");
ctMethod.setBody("{" +
"return java.util.UnmodifiableCollectionsAccessory.getUnmodifiableCollectionField($1);" +
"}");
// perform pre-verification for the modified method
ctMethod.getMethodInfo().rebuildStackMapForME(pool);
ctMethod = classFixer.getDeclaredMethod("initUnmodifiableMap_Field");
ctMethod.setBody("{" +
"dorkbox.serializers.UnmodifiableCollectionJavaAccessor.SOURCE_MAP_FIELD = java.util.UnmodifiableCollectionsAccessory.initUnmodifiableMapField();" +
"}");
// perform pre-verification for the modified method
ctMethod.getMethodInfo().rebuildStackMapForME(pool);
ctMethod = classFixer.getDeclaredMethod("UnmodifiableMap_Field");
ctMethod.setBody("{" +
"return java.util.UnmodifiableCollectionsAccessory.getUnmodifiableMapField(dorkbox.serializers.UnmodifiableCollectionJavaAccessor.SOURCE_MAP_FIELD, $1);" +
"}");
// perform pre-verification for the modified method
ctMethod.getMethodInfo().rebuildStackMapForME(pool);
// perform pre-verification for the modified method
ctMethod.getMethodInfo().rebuildStackMapForME(pool);
final byte[] classFixerBytes = classFixer.toBytecode();
ClassUtils.defineClass(ClassLoader.getSystemClassLoader(), classFixerBytes);
}
// setup reflection, but it's done from INSIDE THE SAME PACKAGE (so no warnings/etc)
UnmodifiableCollectionJavaAccessor.initUnmodifiableMap_Field();
} catch ( final Exception e ) {
throw new RuntimeException( "Could not access source collection" +
" field in java.util.Collections$UnmodifiableCollection.", e );
throw new RuntimeException( "Could not modify UnmodifiableCollection", e );
}
}
@ -78,9 +175,9 @@ public class UnmodifiableCollectionsSerializer extends Serializer<Object> {
try {
final UnmodifiableCollection unmodifiableCollection = UnmodifiableCollection.valueOfType( object.getClass() );
// the ordinal could be replaced by something else (e.g. a explicitly managed "id")
// the ordinal could be replaced by something else (e.g. an explicitly managed "id")
output.writeInt( unmodifiableCollection.ordinal(), true );
kryo.writeClassAndObject( output, unmodifiableCollection.sourceCollectionField.get( object ) );
kryo.writeClassAndObject( output, unmodifiableCollection.getValue(object) );
} catch ( final RuntimeException e ) {
// Don't eat and wrap RuntimeExceptions because the ObjectBuffer.write...
// handles SerializationException specifically (resizing the buffer)...
@ -92,76 +189,103 @@ public class UnmodifiableCollectionsSerializer extends Serializer<Object> {
@Override
public Object copy(Kryo kryo, Object original) {
try {
final UnmodifiableCollection unmodifiableCollection = UnmodifiableCollection.valueOfType( original.getClass() );
Object sourceCollectionCopy = kryo.copy(unmodifiableCollection.sourceCollectionField.get(original));
return unmodifiableCollection.create( sourceCollectionCopy );
} catch ( final RuntimeException e ) {
// Don't eat and wrap RuntimeExceptions
throw e;
} catch ( final Exception e ) {
throw new RuntimeException( e );
}
try {
final UnmodifiableCollection unmodifiableCollection = UnmodifiableCollection.valueOfType( original.getClass() );
Object sourceCollectionCopy = kryo.copy(unmodifiableCollection.getValue(original));
return unmodifiableCollection.create( sourceCollectionCopy );
} catch ( final RuntimeException e ) {
// Don't eat and wrap RuntimeExceptions
throw e;
} catch ( final Exception e ) {
throw new RuntimeException( e );
}
}
private enum UnmodifiableCollection {
COLLECTION( Collections.unmodifiableCollection( Arrays.asList( "" ) ).getClass(), SOURCE_COLLECTION_FIELD ){
COLLECTION( Collections.unmodifiableCollection(Collections.singletonList("")).getClass() ){
@Override
public Object create( final Object sourceCollection ) {
return Collections.unmodifiableCollection( (Collection<?>) sourceCollection );
}
@Override
public Object getValue( final Object sourceCollection ) {
return UnmodifiableCollectionJavaAccessor.UnmodifiableCollection_Field(sourceCollection);
}
},
RANDOM_ACCESS_LIST( Collections.unmodifiableList( new ArrayList<Void>() ).getClass(), SOURCE_COLLECTION_FIELD ){
RANDOM_ACCESS_LIST( Collections.unmodifiableList( new ArrayList<Void>() ).getClass() ){
@Override
public Object create( final Object sourceCollection ) {
return Collections.unmodifiableList( (List<?>) sourceCollection );
}
@Override
public Object getValue( final Object sourceCollection ) {
return UnmodifiableCollectionJavaAccessor.UnmodifiableCollection_Field(sourceCollection);
}
},
LIST( Collections.unmodifiableList( new LinkedList<Void>() ).getClass(), SOURCE_COLLECTION_FIELD ){
LIST( Collections.unmodifiableList( new LinkedList<Void>() ).getClass() ){
@Override
public Object create( final Object sourceCollection ) {
return Collections.unmodifiableList( (List<?>) sourceCollection );
}
@Override
public Object getValue( final Object sourceCollection ) {
return UnmodifiableCollectionJavaAccessor.UnmodifiableCollection_Field(sourceCollection);
}
},
SET( Collections.unmodifiableSet( new HashSet<Void>() ).getClass(), SOURCE_COLLECTION_FIELD ){
SET( Collections.unmodifiableSet( new HashSet<Void>() ).getClass() ){
@Override
public Object create( final Object sourceCollection ) {
return Collections.unmodifiableSet( (Set<?>) sourceCollection );
}
@Override
public Object getValue( final Object sourceCollection ) {
return UnmodifiableCollectionJavaAccessor.UnmodifiableCollection_Field(sourceCollection);
}
},
SORTED_SET( Collections.unmodifiableSortedSet( new TreeSet<Void>() ).getClass(), SOURCE_COLLECTION_FIELD ){
SORTED_SET( Collections.unmodifiableSortedSet( new TreeSet<Void>() ).getClass() ){
@Override
public Object create( final Object sourceCollection ) {
return Collections.unmodifiableSortedSet( (SortedSet<?>) sourceCollection );
}
@Override
public Object getValue( final Object sourceCollection ) {
return UnmodifiableCollectionJavaAccessor.UnmodifiableCollection_Field(sourceCollection);
}
},
MAP( Collections.unmodifiableMap( new HashMap<Void, Void>() ).getClass(), SOURCE_MAP_FIELD ) {
MAP( Collections.unmodifiableMap( new HashMap<Void, Void>() ).getClass() ) {
@Override
public Object create( final Object sourceCollection ) {
return Collections.unmodifiableMap( (Map<?, ?>) sourceCollection );
}
@Override
public Object getValue( final Object sourceCollection ) {
return UnmodifiableCollectionJavaAccessor.UnmodifiableMap_Field(sourceCollection);
}
},
SORTED_MAP( Collections.unmodifiableSortedMap( new TreeMap<Void, Void>() ).getClass(), SOURCE_MAP_FIELD ) {
SORTED_MAP( Collections.unmodifiableSortedMap( new TreeMap<Void, Void>() ).getClass() ) {
@Override
public Object create( final Object sourceCollection ) {
return Collections.unmodifiableSortedMap( (SortedMap<?, ?>) sourceCollection );
}
@Override
public Object getValue( final Object sourceCollection ) {
return UnmodifiableCollectionJavaAccessor.UnmodifiableMap_Field(sourceCollection);
}
};
private final Class<?> type;
private final Field sourceCollectionField;
UnmodifiableCollection( final Class<?> type, final Field sourceCollectionField ) {
UnmodifiableCollection( final Class<?> type) {
this.type = type;
this.sourceCollectionField = sourceCollectionField;
}
/**
* @param sourceCollection
*/
public abstract Object create( Object sourceCollection );
public abstract Object getValue( Object sourceCollection );
static UnmodifiableCollection valueOfType( final Class<?> type ) {
for( final UnmodifiableCollection item : values() ) {