/*
* 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.remote;
import ucar.nc2.ft.point.PointDatasetImpl;
import ucar.nc2.stream.CdmrFeatureDataset;
import ucar.nc2.time.CalendarDateRange;
import ucar.nc2.constants.FeatureType;
import ucar.nc2.VariableSimpleIF;
import ucar.nc2.units.DateUnit;
import ucar.unidata.geoloc.LatLonRect;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* Client view of a CdmRemote Point Dataset.
*
* @author caron
* @since Feb 16, 2009
*/
public class PointDatasetRemote extends PointDatasetImpl {
public PointDatasetRemote(FeatureType wantFeatureType, String uri, DateUnit timeUnit, String altUnits, List<VariableSimpleIF> vars, LatLonRect bb, CalendarDateRange dr) throws IOException {
super(wantFeatureType);
setBoundingBox(bb);
setDateRange(dr);
setLocationURI(CdmrFeatureDataset.SCHEME + uri);
dataVariables = new ArrayList<>( vars);
collectionList = new ArrayList<>(1);
switch (wantFeatureType) {
case POINT:
collectionList.add(new RemotePointCollection(uri, timeUnit, altUnits, null));
break;
case STATION:
collectionList.add(new RemoteStationCollection(uri, timeUnit, altUnits));
break;
default:
throw new UnsupportedOperationException("No implementation for " + wantFeatureType);
}
}
static String makeQuery(String station, LatLonRect boundingBox, CalendarDateRange dateRange) {
StringBuilder query = new StringBuilder();
boolean needamp = false;
if (station != null) {
query.append(station);
needamp = true;
}
if (boundingBox != null) {
if (needamp) query.append("&");
query.append("west=");
query.append(boundingBox.getLonMin());
query.append("&east=");
query.append(boundingBox.getLonMax());
query.append("&south=");
query.append(boundingBox.getLatMin());
query.append("&north=");
query.append(boundingBox.getLatMax());
needamp = true;
}
if (dateRange != null) {
if (needamp) query.append("&");
query.append("time_start=");
query.append(dateRange.getStart());
query.append("&time_end=");
query.append(dateRange.getEnd());
}
if (!needamp) query.append("all");
return query.toString();
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/* private class RemotePointCollection extends PointCollectionImpl {
RemotePointCollection() {
super(getLocation());
}
public PointFeatureIterator getPointFeatureIterator(int bufferSize) throws IOException {
HTTPMethod method = null;
try {
method = ncremote.sendQuery(makeRequest());
InputStream in = method.getResponseBodyAsStream();
int len = NcStream.readVInt(in);
byte[] b = new byte[len];
NcStream.readFully(in, b);
PointStreamProto.PointFeatureCollection pfc = PointStreamProto.PointFeatureCollection.parseFrom(b);
PointFeatureIterator iter = new RemotePointFeatureIterator(pfc, method, in);
iter.setCalculateBounds(this);
return iter;
} catch (Throwable t) {
// log.error(t);
if (method != null) method.releaseConnection();
throw new RuntimeException(t);
}
}
private class RemotePointFeatureIterator extends PointIteratorAbstract {
PointStreamProto.PointFeatureCollection pfc;
HttpMethod method;
InputStream in;
int count = 0;
PointFeature pf;
DateUnit timeUnit;
StructureMembers sm;
RemotePointFeatureIterator(PointStreamProto.PointFeatureCollection pfc, HttpMethod method, InputStream in) throws IOException {
this.pfc = pfc;
this.method = method;
this.in = in;
try {
timeUnit = new DateUnit(pfc.getTimeUnit());
} catch (Exception e) {
e.printStackTrace();
}
int offset = 0;
sm = new StructureMembers(pfc.getName());
for (PointStreamProto.Member m : pfc.getMembersList()) {
StructureMembers.Member member = sm.addMember(m.getName(), m.getDesc(), m.getUnits(), NcStream.decodeDataType(m.getDataType()),
NcStream.decodeSection(m.getSection()).getShape());
member.setDataParam( offset);
offset += member.getSizeBytes();
}
sm.setStructureSize( offset);
}
public boolean hasNext() throws IOException {
int len = NcStream.readVInt(in);
if (len <= 0) {
System.out.println(" total read= " + count);
finish();
pf = null;
return false;
}
byte[] b = new byte[len];
NcStream.readFully(in, b);
PointStreamProto.PointFeature pfp = PointStreamProto.PointFeature.parseFrom(b);
PointStreamProto.Location locp = pfp.getLoc();
EarthLocationImpl location = new EarthLocationImpl(locp.getLat(), locp.getLon(), locp.getAlt());
pf = new MyPointFeature(location, locp.getTime(), locp.getNomTime(), timeUnit, pfp);
//System.out.println(" count= " + count + " pf=" + pf);
count++;
return true;
}
public PointFeature next() throws IOException {
if (pf != null)
calcBounds(pf);
return pf;
}
public void finish() {
if (method != null)
method.releaseConnection();
method = null;
finishCalcBounds();
}
public void setBufferSize(int bytes) {
}
private class MyPointFeature extends PointFeatureImpl {
PointStreamProto.PointFeature pfp;
MyPointFeature(EarthLocation location, double obsTime, double nomTime, DateUnit timeUnit, PointStreamProto.PointFeature pfp) {
super(location, obsTime, nomTime, timeUnit);
this.pfp = pfp;
}
public StructureData getData() throws IOException {
ByteBuffer bb = ByteBuffer.wrap(pfp.getData().toByteArray());
ArrayStructureBB asbb = new ArrayStructureBB(sm, new int[]{1}, bb, 0);
for (String s : pfp.getSdataList())
asbb.addObjectToHeap(s); // not quite right
return asbb.getStructureData(0);
}
public String toString() {
return location + " obs=" + obsTime + " nom=" + nomTime;
}
}
}
@Override
public PointFeatureCollection subset(LatLonRect boundingBox, DateRange dateRange) throws IOException {
return new PointFeatureCollectionSubset(this, boundingBox, dateRange);
}
private class PointFeatureCollectionSubset extends RemotePointCollection {
PointCollectionImpl from;
PointFeatureCollectionSubset(PointCollectionImpl from, LatLonRect filter_bb, DateRange filter_date) throws IOException {
this.from = from;
if (filter_bb == null)
this.boundingBox = from.getBoundingBox();
else
this.boundingBox = (from.getBoundingBox() == null) ? filter_bb : from.getBoundingBox().intersect(filter_bb);
if (filter_date == null) {
this.dateRange = from.getDateRange();
} else {
this.dateRange = (from.getDateRange() == null) ? filter_date : from.getDateRange().intersect(filter_date);
}
}
}
private String makeRequest() {
boolean needamp = false;
StringBuilder sb = new StringBuilder();
if (boundingBox != null) {
sb.append("east=");
sb.append(boundingBox.getLonMin());
sb.append("&west=");
sb.append(boundingBox.getLonMax());
sb.append("&south=");
sb.append(boundingBox.getLatMin());
sb.append("&north=");
sb.append(boundingBox.getLatMax());
needamp = true;
}
if (dateRange != null) {
if (needamp) sb.append("&");
sb.append("time_min=");
sb.append(dateRange.getStart().toDateTimeStringISO());
sb.append("&time_max=");
sb.append(dateRange.getStart().toDateTimeStringISO());
needamp = true;
}
if (!needamp) sb.append("all");
return sb.toString();
}
} */
}