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