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/**
* Copyright 2018 Nikita Koksharov
*
* 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.redisson.misc;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.redisson.RedissonReference;
import org.redisson.api.RLiveObject;
import org.redisson.api.RLiveObjectService;
import org.redisson.api.RObject;
import org.redisson.api.RObjectReactive;
import org.redisson.api.RedissonClient;
import org.redisson.api.RedissonReactiveClient;
import org.redisson.api.annotation.REntity;
import org.redisson.api.annotation.RId;
import org.redisson.client.codec.Codec;
import org.redisson.codec.ReferenceCodecProvider;
import org.redisson.config.Config;
import org.redisson.liveobject.misc.ClassUtils;
import org.redisson.liveobject.misc.Introspectior;
import org.redisson.liveobject.resolver.NamingScheme;
/**
*
* @author Rui Gu (https://github.com/jackygurui)
*/
public class RedissonObjectFactory {
public static class RedissonObjectBuilder {
Method defaultCodecMethod;
Method customCodecMethod;
Method get(boolean value) {
if (value) {
return defaultCodecMethod;
}
return customCodecMethod;
}
}
private static final Map, RedissonObjectBuilder> builders;
static {
HashMap, RedissonObjectBuilder> b = new HashMap, RedissonObjectBuilder>();
for (Method method : RedissonClient.class.getDeclaredMethods()) {
if (!method.getReturnType().equals(Void.TYPE)
&& RObject.class.isAssignableFrom(method.getReturnType())
&& method.getName().startsWith("get")) {
Class cls = method.getReturnType();
if (!b.containsKey(cls)) {
b.put(cls, new RedissonObjectBuilder());
}
RedissonObjectBuilder builder = b.get(cls);
if (method.getParameterTypes().length == 2 //first param is name, second param is codec.
&& Codec.class.isAssignableFrom(method.getParameterTypes()[1])) {
builder.customCodecMethod = method;
} else if (method.getParameterTypes().length == 1) {
builder.defaultCodecMethod = method;
}
}
}
for (Method method : RedissonReactiveClient.class.getDeclaredMethods()) {
if (!method.getReturnType().equals(Void.TYPE)
&& RObjectReactive.class.isAssignableFrom(method.getReturnType())
&& method.getName().startsWith("get")) {
Class cls = method.getReturnType();
if (!b.containsKey(cls)) {
b.put(cls, new RedissonObjectBuilder());
}
RedissonObjectBuilder builder = b.get(cls);
if (method.getParameterTypes().length == 2 //first param is name, second param is codec.
&& Codec.class.isAssignableFrom(method.getParameterTypes()[1])) {
builder.customCodecMethod = method;
} else if (method.getParameterTypes().length == 1) {
builder.defaultCodecMethod = method;
}
}
}
builders = Collections.unmodifiableMap(b);
}
public static T fromReference(RedissonClient redisson, RedissonReference rr) throws Exception {
Class type = rr.getType();
ReferenceCodecProvider codecProvider = redisson.getConfig().getReferenceCodecProvider();
if (type != null) {
if (ClassUtils.isAnnotationPresent(type, REntity.class)) {
RLiveObjectService liveObjectService = redisson.getLiveObjectService();
REntity anno = ClassUtils.getAnnotation(type, REntity.class);
NamingScheme ns = anno.namingScheme()
.getDeclaredConstructor(Codec.class)
.newInstance(codecProvider.getCodec(anno, type));
return (T) liveObjectService.get(type, ns.resolveId(rr.getKeyName()));
}
List> interfaces = Arrays.asList(type.getInterfaces());
for (Class iType : interfaces) {
if (builders.containsKey(iType)) {// user cache to speed up things a little.
Method builder = builders.get(iType).get(isDefaultCodec(rr));
return (T) (isDefaultCodec(rr)
? builder.invoke(redisson, rr.getKeyName())
: builder.invoke(redisson, rr.getKeyName(), codecProvider.getCodec(rr.getCodecType())));
}
}
}
throw new ClassNotFoundException("No RObject is found to match class type of " + rr.getTypeName() + " with codec type of " + rr.getCodecName());
}
private static boolean isDefaultCodec(RedissonReference rr) {
return rr.getCodec() == null;
}
public static T fromReference(RedissonReactiveClient redisson, RedissonReference rr) throws Exception {
Class type = rr.getReactiveType();
ReferenceCodecProvider codecProvider = redisson.getConfig().getReferenceCodecProvider();
/**
* Live Object from reference in reactive client is not supported yet.
*/
if (type != null) {
List> interfaces = Arrays.asList(type.getInterfaces());
for (Class iType : interfaces) {
if (builders.containsKey(iType)) {// user cache to speed up things a little.
Method builder = builders.get(iType).get(isDefaultCodec(rr));
return (T) (isDefaultCodec(rr)
? builder.invoke(redisson, rr.getKeyName())
: builder.invoke(redisson, rr.getKeyName(), codecProvider.getCodec(rr.getCodecType())));
}
}
}
throw new ClassNotFoundException("No RObjectReactive is found to match class type of " + rr.getReactiveTypeName()+ " with codec type of " + rr.getCodecName());
}
public static RedissonReference toReference(Config config, Object object) {
if (object != null && ClassUtils.isAnnotationPresent(object.getClass(), REntity.class)) {
throw new IllegalArgumentException("REntity should be attached to Redisson before save");
}
if (object instanceof RObject && !(object instanceof RLiveObject)) {
RObject rObject = ((RObject) object);
config.getReferenceCodecProvider().registerCodec((Class) rObject.getCodec().getClass(), (Class) rObject.getClass(), rObject.getName(), rObject.getCodec());
return new RedissonReference(object.getClass(), ((RObject) object).getName(), ((RObject) object).getCodec());
}
if (object instanceof RObjectReactive && !(object instanceof RLiveObject)) {
RObjectReactive rObject = ((RObjectReactive) object);
config.getReferenceCodecProvider().registerCodec((Class) rObject.getCodec().getClass(), (Class) rObject.getClass(), rObject.getName(), rObject.getCodec());
return new RedissonReference(object.getClass(), ((RObjectReactive) object).getName(), ((RObjectReactive) object).getCodec());
}
try {
if (object instanceof RLiveObject) {
Class rEntity = object.getClass().getSuperclass();
REntity anno = ClassUtils.getAnnotation(rEntity, REntity.class);
NamingScheme ns = anno.namingScheme()
.getDeclaredConstructor(Codec.class)
.newInstance(config.getReferenceCodecProvider().getCodec(anno, (Class) rEntity));
String name = Introspectior
.getFieldsWithAnnotation(rEntity, RId.class)
.getOnly().getName();
Class type = ClassUtils.getDeclaredField(rEntity, name).getType();
return new RedissonReference(rEntity,
ns.getName(rEntity, type, name, ((RLiveObject) object).getLiveObjectId()));
}
} catch (Exception e) {
throw new IllegalArgumentException(e);
}
return null;
}
public static T createRObject(RedissonClient redisson, Class expectedType, String name, K codec) throws Exception {
List> interfaces = Arrays.asList(expectedType.getInterfaces());
for (Class iType : interfaces) {
if (builders.containsKey(iType)) {// user cache to speed up things a little.
Method builder = builders.get(iType).get(codec != null);
return (T) (codec != null
? builder.invoke(redisson, name)
: builder.invoke(redisson, name, codec));
}
}
throw new ClassNotFoundException("No RObject is found to match class type of " + (expectedType != null ? expectedType.getName() : "null") + " with codec type of " + (codec != null ? codec.getClass().getName() : "null"));
}
public static void warmUp() {}
}
