/* Copyright (c) 2001-2016, The HSQL Development Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HSQL Development Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.hsqldb.types;
import java.io.
Serializable;
import org.hsqldb.error.
Error;
import org.hsqldb.error.
ErrorCode;
import org.hsqldb.lib.
InOutUtil;
/**
* Represents of an instance of an OTHER field value for direct storage.<p>
*
* Objects need not implement Serializable to be stored in the mem: database.
* They are stored as-is and reflect any changes to the stored Objects by the
* application program.
*
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @version 2.3.4
* @since 1.9.0
*/
public class
JavaObjectDataInternal extends
JavaObjectData {
Object object;
/**
* Constructor used inside the engine when an already serialized
* Object is read from a file.
*
* If the Object is not serializable, this method throws an exception.
*/
public
JavaObjectDataInternal(byte[]
data) {
try {
object =
InOutUtil.
deserialize(
data);
} catch (
Exception e) {
throw
Error.
error(
ErrorCode.
X_22521,
e.
toString());
}
}
/**
* Constructor used inside the engine.
*/
public
JavaObjectDataInternal(
Object o) {
object =
o;
}
public byte[]
getBytes() {
try {
if (
object instanceof
Serializable) {
return
InOutUtil.
serialize((
Serializable)
object);
}
} catch (
Exception e) {}
return new byte[]{};
}
public int
getBytesLength() {
try {
if (
object instanceof
Serializable) {
byte[]
data =
InOutUtil.
serialize((
Serializable)
object);
return
data.length;
}
} catch (
Exception e) {}
return 0;
}
/**
* This method is called from classes implementing the JDBC
* interfaces. Inside the engine it is used for conversion from a value of
* type OTHER to another type. It will throw if the OTHER is an instance
* of a class that is not available.
*/
public
Object getObject() {
return
object;
}
/**
* Returns String representation of this object.
*
* @return a String representation of this object.
*/
public
String toString() {
return super.toString();
}
}