/*
* Copyright 1999-2010 Luca Garulli (l.garulli--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.
*/
package com.orientechnologies.orient.core.serialization.serializer.stream;
import java.io.IOException;
import java.lang.reflect.Constructor;
import com.orientechnologies.common.log.OLogManager;
import com.orientechnologies.orient.core.db.record.ODatabaseRecord;
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;
/**
* 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(final ODatabaseRecord iDatabase, 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();
cls = OStreamSerializerHelper.readRecordType(stream, content);
// TRY WITH THE DATABASE CONSTRUCTOR
for (Constructor<?> c : cls.getDeclaredConstructors()) {
Class<?>[] params = c.getParameterTypes();
if (params.length == 2 && params[0].isAssignableFrom(iDatabase.getClass()) && params[1].equals(ORID.class)) {
ORecord<?> rec = (ORecord<?>) c.newInstance(iDatabase, new ORecordId(content.toString()));
// rec.load();
return rec;
}
}
} catch (Exception e) {
OLogManager.instance().exception("Error on unmarshalling content. Class %s", e, OSerializationException.class, cls.getName());
}
OLogManager
.instance()
.exception(
"Can'r unmarshall the record since the serialized object of class %s has no a constructor with right parameters: %s(%s, ORID)",
null, OSerializationException.class, cls.getSimpleName(), cls.getSimpleName(), iDatabase.getClass().getSimpleName());
return null;
}
public byte[] toStream(final ODatabaseRecord iDatabase, Object iObject) throws IOException {
if (iObject == null)
return null;
if (((ORecord<?>) iObject).getIdentity() == null)
throw new OSerializationException("Can't serialize record without identity. Store it before to serialize.");
final StringBuilder buffer = OStreamSerializerHelper.writeRecordType(iObject.getClass(), new StringBuilder());
buffer.append(((ORecord<?>) iObject).getIdentity().toString());
return OBinaryProtocol.string2bytes(buffer.toString());
}
public String getName() {
return NAME;
}
}