/*
* Copyright 1998-2009 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
*
* Access and use of this software shall impose the following obligations
* and understandings on the user. The user is granted the right, without
* any fee or cost, to use, copy, modify, alter, enhance and distribute
* this software, and any derivative works thereof, and its supporting
* documentation for any purpose whatsoever, provided that this entire
* notice appears in all copies of the software, derivative works and
* supporting documentation. Further, UCAR requests that the user credit
* UCAR/Unidata in any publications that result from the use of this
* software or in any product that includes this software. The names UCAR
* and/or Unidata, however, may not be used in any advertising or publicity
* to endorse or promote any products or commercial entity unless specific
* written permission is obtained from UCAR/Unidata. The user also
* understands that UCAR/Unidata is not obligated to provide the user with
* any support, consulting, training or assistance of any kind with regard
* to the use, operation and performance of this software nor to provide
* the user with any updates, revisions, new versions or "bug fixes."
*
* THIS SOFTWARE IS PROVIDED BY UCAR/UNIDATA "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL UCAR/UNIDATA BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package ucar.nc2.ft.point;
import ucar.nc2.ft.PointFeatureIterator;
import ucar.nc2.ft.PointFeature;
import ucar.nc2.Variable;
import ucar.ma2.*;
import java.io.IOException;
import java.util.List;
/**
* A PointFeatureIterator using the "multidimensional representation".
* Not currently used.
*
* @author caron
* @since Mar 26, 2008
*/
public abstract class PointIteratorMultidim implements PointFeatureIterator {
static private org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger(PointIteratorMultidim.class);
protected abstract PointFeature makeFeature(int recnum, StructureData sdata) throws IOException;
private List<Variable> vars;
private StructureMembers members;
private int outerIndex;
private Filter filter;
private int count, npts;
private PointFeature feature;
public PointIteratorMultidim(String name, List<Variable> vars, int outerIndex, Filter filter) {
this.vars = vars;
this.outerIndex = outerIndex;
this.filter = filter;
Variable v = vars.get(0);
npts = v.getDimension(1).getLength();
members = new StructureMembers(name);
for (Variable var : vars) {
int[] shape = var.getShape();
int[] newShape = new int[shape.length - 2];
System.arraycopy(shape, 2, newShape, 0, shape.length - 2);
members.addMember(var.getShortName(), var.getDescription(), var.getUnitsString(), var.getDataType(), newShape);
}
}
public boolean hasNext() throws IOException {
while (count < npts) {
StructureData sdata = nextStructureData();
feature = makeFeature(count, sdata);
count++;
if (filter != null && !filter.filter(feature)) continue;
return true;
}
feature = null;
return false;
}
public PointFeature next() throws IOException {
return feature;
}
private StructureData nextStructureData() throws IOException {
StructureDataW sdata = new StructureDataW(members);
for (Variable var : vars) {
Section s = new Section();
try {
s.appendRange(outerIndex, outerIndex);
s.appendRange(count, count);
for (int i = 2; i < var.getRank(); i++)
s.appendRange(null);
Array data = var.read(s);
sdata.setMemberData(var.getShortName(), data);
} catch (InvalidRangeException e) {
e.printStackTrace();
}
}
return sdata;
}
public void setBufferSize(int bytes) {
// no op
}
}