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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, 2004, 2005, 2006, 2007, 2008, 2009 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.wcps.server.exceptions.InvalidCrsException;
import petascope.wcps.server.exceptions.WCPSException;
import java.math.BigInteger;
import org.w3c.dom.*;
public class AxisIterator implements IRasNode {
private String var, varTranslation;
private AxisName axis;
private NumericScalarExpr hi, lo;
public AxisIterator(Node node, XmlQuery xq, String newIteratorName) throws WCPSException, InvalidCrsException {
while ((node != null) && node.getNodeName().equals("#text")) {
node = node.getNextSibling();
}
System.err.println("Trying to parse AxisIterator ");
while (node != null) {
String nodeName = node.getNodeName();
if (nodeName.equals("iteratorVar")) {
var = node.getTextContent();
// This variable will be referenced later on. Translate it.
xq.addReferenceVariable(var, newIteratorName);
varTranslation = xq.getReferenceVariableName(var);
} else if (nodeName.equals("axis")) {
axis = new AxisName(node, xq);
} else {
// Should contain the limits
// TODO: Implement ImageCrsDomainMetadataType class
if (lo == null) {
lo = new NumericScalarExpr(node, xq);
} else if (hi == null) {
hi = new NumericScalarExpr(node, xq);
} else {
throw new WCPSException("Unknown node in AxisIterator: " + nodeName);
}
}
node = node.getNextSibling();
while ((node != null) && node.getNodeName().equals("#text")) {
node = node.getNextSibling();
}
}
}
public String toRasQL() {
String result = varTranslation + " in [" + lo.toRasQL() + ":" + hi.toRasQL() + "]";
return result;
}
/** Sets a new name for the iterator variable, to be used in the rasql query**/
public void setVariableTranslation(String newName) {
varTranslation = newName;
}
/** Return the Higher bound for the axis iterator.
* This only works for constant expressions.
* TODO: implement arbitrary expressions.
* @return BigInteger
*/
public BigInteger getHigh() {
return SDU.str2integer(hi.toRasQL()).get(0);
}
/** Return the Lower bound for the axis iterator.
* This only works for constant expressions.
* TODO: implement arbitrary expressions.
* @return BIgInteger
*/
public BigInteger getLow() {
return SDU.str2integer(lo.toRasQL()).get(0);
}
/* Return the variable name used in this axis */
public String getVar() {
return var;
}
public String getAxisType() {
return axis.toRasQL();
}
/* Returns the m-interval that this axis iterates over in a string form */
public String getInterval() {
return lo.toRasQL() + ":" + hi.toRasQL();
}
}
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