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/*
* This file is part of rasdaman community.
*
* Rasdaman community 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, either version 3 of the License, or
* (at your option) any later version.
*
* Rasdaman community 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 rasdaman community. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003 - 2010 Peter Baumann / rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
*/
package petascope.wcps.server.core;
import petascope.exceptions.WCPSException;
import java.util.Vector;
import org.w3c.dom.*;
public class CondenseScalarExpr implements IRasNode {
private CondenseOperation op;
private Vector<AxisIterator> iterators;
private IRasNode using;
private IRasNode where;
private String axisIteratorString;
private String newIteratorName;
public CondenseScalarExpr(Node node, XmlQuery xq) throws WCPSException {
if (node.getNodeName().equals("condense")) {
node = node.getFirstChild();
}
while ((node != null) && node.getNodeName().equals("#text")) {
node = node.getNextSibling();
}
iterators = new Vector();
newIteratorName = xq.registerNewExpressionWithVariables();
System.err.println("Parsing Condense Scalar Expression: " + node.getNodeName());
while (node != null) {
String name = node.getNodeName();
if (op == null) {
op = new CondenseOperation(node, xq);
} else if (name.equals("iterator")) {
AxisIterator it = new AxisIterator(node.getFirstChild(), xq, newIteratorName);
iterators.add(it);
} else if (name.equals("where")) {
where = new BooleanScalarExpr(node.getFirstChild(), xq);
} else {
using = new CoverageExpr(node, xq);
}
node = node.getNextSibling();
while ((node != null) && node.getNodeName().equals("#text")) {
node = node.getNextSibling();
}
}
buildAxisIteratorDomain();
}
public String toRasQL() {
String result = "condense " + op.toRasQL() + " over ";
result += axisIteratorString;
if (where != null) {
result += where.toRasQL();
}
result += " using " + using.toRasQL();
return result;
}
/* Concatenates all the AxisIterators into one large multi-dimensional object,
* that will be used to build to RasQL query */
private void buildAxisIteratorDomain() {
axisIteratorString = "";
axisIteratorString += newIteratorName + " in [";
for (int i = 0; i < iterators.size(); i++) {
if (i > 0) {
axisIteratorString += ", ";
}
AxisIterator ai = iterators.elementAt(i);
axisIteratorString += ai.getInterval();
}
axisIteratorString += "]";
}
}
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