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/*
* This file is part of PetaScope.
*
* PetaScope 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 3 of
* the License, or (at your option) any later version.
*
* PetaScope 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 PetaScope. If not, see <http://www.gnu.org/licenses/>.
*
* For more information please see <http://www.PetaScope.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
*
* Copyright 2009 Jacobs University Bremen, Peter Baumann.
*/
package petascope.wcps.server.core;
import petascope.wcps.server.exceptions.InvalidCrsException;
import petascope.wcps.server.exceptions.WCPSException;
import org.w3c.dom.*;
public class ReduceScalarExpr implements IRasNode {
CoverageExpr expr;
String op;
public ReduceScalarExpr(Node node, XmlQuery xq) throws WCPSException, InvalidCrsException {
if (node.getNodeName().equals("reduce")) {
node = node.getFirstChild();
}
while ((node != null) && node.getNodeName().equals("#text")) {
node = node.getNextSibling();
}
System.err.println("Trying to parse ReduceScalarExpr ");
String nodeName = node.getNodeName();
if (nodeName.equals("all") || nodeName.equals("some") || nodeName.equals("count")
|| nodeName.equals("add") || nodeName.equals("avg") || nodeName.equals("min")
|| nodeName.equals("max")) {
op = nodeName;
if (!op.equals("all") && !op.equals("some")) {
op = op + "_cells";
}
node = node.getFirstChild();
while ((node != null) && (node.getNodeName().equals("#text"))) {
node = node.getNextSibling();
}
expr = new CoverageExpr(node, xq);
} else {
throw new WCPSException("invalid ReduceScalarExprType node : " + nodeName);
}
}
public String toRasQL() {
return op + "(" + expr.toRasQL() + ")";
}
}
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