package org.jacorb.notification.filter.etcl;
/*
* JacORB - a free Java ORB
*
* Copyright (C) 1999-2004 Gerald Brose
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
import org.jacorb.notification.filter.EvaluationContext;
import org.jacorb.notification.filter.EvaluationException;
import org.jacorb.notification.filter.EvaluationResult;
import org.jacorb.notification.filter.FilterConstraint;
import org.jacorb.notification.filter.ParseException;
import org.jacorb.notification.interfaces.Message;
import org.omg.CosNotifyFilter.ConstraintExp;
import org.omg.CosNotifyFilter.InvalidConstraint;
/**
* Representation of a ETCL Filter Constraint.
*
* @author Alphonse Bendt
* @version $Id: ETCLFilterConstraint.java,v 1.5 2006-05-17 13:07:40 alphonse.bendt Exp $
*/
public class ETCLFilterConstraint implements FilterConstraint
{
/**
* AST for the Constraint
*/
private final AbstractTCLNode rootNode_;
////////////////////////////////////////
public ETCLFilterConstraint( AbstractTCLNode root )
{
rootNode_ = root;
}
public ETCLFilterConstraint( ConstraintExp constraintExp )
throws InvalidConstraint
{
try
{
rootNode_ = TCLParser.parse( constraintExp.constraint_expr );
if (rootNode_ != null) {
TCLCleanUp _cleanUp = new TCLCleanUp();
_cleanUp.fix( rootNode_ );
StaticTypeChecker _checker = new StaticTypeChecker();
_checker.check( rootNode_ );
}
return;
}
catch ( StaticTypeException e )
{
throw new InvalidConstraint( e.toString(), constraintExp );
}
catch ( ParseException e )
{
throw new InvalidConstraint( e.toString(), constraintExp );
}
}
////////////////////////////////////////
public EvaluationResult evaluate( EvaluationContext evaluationContext,
Message event )
throws EvaluationException
{
if (rootNode_ == null) {
return EvaluationResult.BOOL_TRUE;
}
evaluationContext.setCurrentMessage( event );
EvaluationResult _res = rootNode_.evaluate( evaluationContext );
return _res;
}
public String toString()
{
StringBuffer _buffer = new StringBuffer("<FilterConstraint: ");
rootNode_.printToStringBuffer(_buffer);
_buffer.append(" >");
return _buffer.toString();
}
}