/*
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on Jul 6, 2008
*/
package com.bigdata.sparse;
import java.util.LinkedList;
import java.util.List;
import org.apache.log4j.Logger;
/**
* Base class may be used for combining {@link IPrecondition}. The base class
* by itself always succeeds, but you can add additional preconditions to be
* tested.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public class Precondition implements IPrecondition {
protected static final transient Logger log = Logger.getLogger(Precondition.class);
/**
*
*/
private static final long serialVersionUID = -5628116520592503669L;
private final List<IPrecondition> conditions = new LinkedList<IPrecondition>();
/**
* De-serializator ctor.
*/
public Precondition() {
}
public Precondition(IPrecondition c) {
add(c);
}
public void add(IPrecondition c) {
if (c == null)
throw new IllegalArgumentException();
conditions.add( c );
}
public boolean accept(ITPS logicalRow) {
for(IPrecondition c : conditions) {
if(!c.accept(logicalRow)) {
if(log.isInfoEnabled()) {
log.info("Failed: condition="+c+", logicalRow="+logicalRow);
}
return false;
}
}
return true;
}
}