/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jbpm.pvm.internal.type.variable;
import org.jbpm.pvm.internal.env.EnvironmentImpl;
import org.jbpm.pvm.internal.lob.Lob;
import org.jbpm.pvm.internal.model.ScopeInstanceImpl;
import org.jbpm.pvm.internal.session.DbSession;
import org.jbpm.pvm.internal.type.Variable;
public class BlobVariable extends Variable {
private static final long serialVersionUID = 1L;
protected Lob lob = null;
protected Object cachedValue = null;
public boolean isStorable(Object value) {
if (value==null) return true;
return (byte[].class.isAssignableFrom(value.getClass()));
}
public Object getObject() {
if (lob==null) return null;
return lob.extractBytes();
}
public void setObject(Object value) {
if (this.lob!=null) {
DbSession dbSession = EnvironmentImpl.getFromCurrent(DbSession.class, false);
if (dbSession!=null) {
dbSession.delete(this.lob);
}
}
this.lob = new Lob((byte[])value, true);
}
public Object getValue(ScopeInstanceImpl scopeInstance) {
if (cachedValue!=null) {
return cachedValue;
}
cachedValue = super.getValue(scopeInstance);
return cachedValue;
}
public void setValue(Object value, ScopeInstanceImpl scopeInstance) {
super.setValue(value, scopeInstance);
cachedValue = value;
}
public Lob getLob() {
return lob;
}
}