/*
*
* * Copyright 2014 Orient Technologies LTD (info(at)orientechnologies.com)
* *
* * 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.
* *
* * For more information: http://www.orientechnologies.com
*
*/
package com.orientechnologies.orient.core.serialization.serializer.stream;
import com.orientechnologies.orient.core.exception.OSerializationException;
import com.orientechnologies.orient.core.id.ORID;
import com.orientechnologies.orient.core.id.ORecordId;
import com.orientechnologies.orient.core.record.ORecord;
import com.orientechnologies.orient.core.serialization.OBinaryProtocol;
import java.io.IOException;
import java.lang.reflect.Constructor;
/**
* Allow short and long form. Examples: <br>
* Short form: @[type][RID] where type = 1 byte<br>
* Long form: org.myapp.Myrecord|[RID]<br>
*
* @author Luca Garulli
*
*/
public class OStreamSerializerAnyRecord implements OStreamSerializer {
public static final String NAME = "ar";
public static final OStreamSerializerAnyRecord INSTANCE = new OStreamSerializerAnyRecord();
/**
* Re-Create any object if the class has a public constructor that accepts a String as unique parameter.
*/
public Object fromStream(byte[] iStream) throws IOException {
if (iStream == null || iStream.length == 0)
// NULL VALUE
return null;
final String stream = OBinaryProtocol.bytes2string(iStream);
Class<?> cls = null;
try {
final StringBuilder content = new StringBuilder(1024);
cls = OStreamSerializerHelper.readRecordType(stream, content);
// TRY WITH THE DATABASE CONSTRUCTOR
for (Constructor<?> c : cls.getDeclaredConstructors()) {
Class<?>[] params = c.getParameterTypes();
if (params.length == 2 && params[1].equals(ORID.class)) {
ORecord rec = (ORecord) c.newInstance(new ORecordId(content.toString()));
// rec.load();
return rec;
}
}
} catch (Exception e) {
throw new OSerializationException("Error on unmarshalling content. Class " + (cls != null ? cls.getName() : "?"), e);
}
throw new OSerializationException("Cannot unmarshall the record since the serialized object of class "
+ (cls != null ? cls.getSimpleName() : "?") + " has no constructor with suitable parameters: (ORID)");
}
public byte[] toStream(Object iObject) throws IOException {
if (iObject == null)
return null;
if (((ORecord) iObject).getIdentity() == null)
throw new OSerializationException("Cannot serialize record without identity. Store it before serialization.");
final StringBuilder buffer = OStreamSerializerHelper.writeRecordType(iObject.getClass(), new StringBuilder(1024));
buffer.append(((ORecord) iObject).getIdentity().toString());
return OBinaryProtocol.string2bytes(buffer.toString());
}
public String getName() {
return NAME;
}
}