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mapogcsos.c
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mapogcsos.c
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/**********************************************************************
* $Id$
*
* Project: MapServer
* Purpose: OGC SOS implementation
* Author: Y. Assefa, DM Solutions Group (assefa@dmsolutions.ca)
*
**********************************************************************
* Copyright (c) 2006, Y. Assefa, DM Solutions Group Inc
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies of this Software or works derived from this Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
**********************************************************************/
#define _GNU_SOURCE
#include "mapserver.h"
#if defined(USE_SOS_SVR) && defined(USE_LIBXML2)
#include "maperror.h"
#include "mapthread.h"
#include "mapows.h"
#include "maptime.h"
#include "mapgml.h"
#include "mapogcfilter.h"
#include "mapowscommon.h"
#include "maplibxml2.h"
#include "libxml/parser.h"
#include "libxml/tree.h"
#include "libxml/xpath.h"
#include "libxml/xpathInternals.h"
const char *pszSOSVersion = "1.0.0";
const char *pszSOSNamespaceUri = "http://www.opengis.net/sos/1.0";
const char *pszSOSNamespacePrefix = "sos";
const char *pszOMNamespaceUri = "http://www.opengis.net/om/1.0";
const char *pszOMNamespacePrefix = "om";
const char *pszSOSDescribeSensorMimeType = "text/xml; subtype=\"sensorML/1.0.0\"";
const char *pszSOSGetObservationMimeType = "text/xml; subtype=\"om/1.0.0\"";
typedef struct {
char *pszProcedure;
xmlNodePtr psResultNode;
} SOSProcedureNode;
int msSOSParseRequest(mapObj *map, cgiRequestObj *request, sosParamsObj *sosparams);
void msSOSFreeParamsObj(sosParamsObj *sosparams);
/*
** msSOSException()
**
** Report current MapServer error in XML exception format.
** Wrapper function around msOWSCommonExceptionReport. Merely
** passes SOS specific info.
**
*/
static int msSOSException(mapObj *map, char *locator, char *exceptionCode) {
int size = 0;
char *errorString = NULL;
char *errorMessage = NULL;
char *schemasLocation = NULL;
const char *encoding;
xmlDocPtr psDoc = NULL;
xmlNodePtr psRootNode = NULL;
xmlNsPtr psNsOws = NULL;
xmlChar *buffer = NULL;
psNsOws = xmlNewNs(NULL, BAD_CAST "http://www.opengis.net/ows/1.1", BAD_CAST "ows");
encoding = msOWSLookupMetadata(&(map->web.metadata), "SO", "encoding");
errorString = msGetErrorString("\n");
errorMessage = msEncodeHTMLEntities(errorString);
schemasLocation = msEncodeHTMLEntities(msOWSGetSchemasLocation(map));
psDoc = xmlNewDoc(BAD_CAST "1.0");
psRootNode = msOWSCommonExceptionReport(psNsOws, OWS_1_1_0, schemasLocation, pszSOSVersion, msOWSGetLanguage(map, "exception"), exceptionCode, locator, errorMessage);
xmlDocSetRootElement(psDoc, psRootNode);
psNsOws = xmlNewNs(psRootNode, BAD_CAST "http://www.opengis.net/ows/1.1", BAD_CAST "ows");
if (encoding)
msIO_setHeader("Content-type","text/xml; charset=%s", encoding);
else
msIO_setHeader("Content-type","text/xml");
msIO_sendHeaders();
xmlDocDumpFormatMemoryEnc(psDoc, &buffer, &size, (encoding ? encoding : "ISO-8859-1"), 1);
msIO_printf("%s", buffer);
/*free buffer and the document */
free(errorString);
free(errorMessage);
free(schemasLocation);
xmlFree(buffer);
xmlFreeDoc(psDoc);
/*
** The typical pattern is to call msSOSException() right after
** msSetError(). In order to prevent mapserv.c from re-reporting this
** error at a higher level, we mark it as reported here. #3571
*/
{
errorObj *err = msGetErrorObj();
if( err != NULL && err->code != MS_NOERR )
err->isreported = MS_TRUE;
}
return MS_FAILURE;
}
static int _IsInList(char **papsProcedures, int nDistinctProcedures, char *pszProcedure) {
int i = 0;
if (papsProcedures && nDistinctProcedures > 0 && pszProcedure) {
for (i=0; i<nDistinctProcedures; i++) {
if (papsProcedures[i] && strcmp(papsProcedures[i], pszProcedure) == 0)
return 1;
}
}
return 0;
}
/************************************************************************/
/* msSOSValidateFilter */
/* */
/* Look if the filter's property names have an equivalent */
/* layre's attribute. */
/************************************************************************/
static int msSOSValidateFilter(FilterEncodingNode *psFilterNode,
layerObj *lp)
{
int i=0, bFound =0;
/* assuming here that the layer is opened*/
if (psFilterNode && lp)
{
if (psFilterNode->eType == FILTER_NODE_TYPE_PROPERTYNAME)
{
for (i=0; i<lp->numitems; i++)
{
if (strcasecmp(lp->items[i], psFilterNode->pszValue) == 0)
{
bFound = 1;
break;
}
}
if (!bFound)
return MS_FALSE;
}
if (psFilterNode->psLeftNode && psFilterNode->eType != FILTER_NODE_TYPE_SPATIAL)
{
if (msSOSValidateFilter(psFilterNode->psLeftNode, lp) == MS_FALSE)
return MS_FALSE;
}
if (psFilterNode->psRightNode && psFilterNode->eType != FILTER_NODE_TYPE_SPATIAL)
{
if (msSOSValidateFilter(psFilterNode->psRightNode, lp) == MS_FALSE)
return MS_FALSE;
}
}
return MS_TRUE;
}
/************************************************************************/
/* msSOSAddMetadataChildNode */
/* */
/* Utility function to add a metadata node. */
/************************************************************************/
void msSOSAddMetadataChildNode(xmlNodePtr psParent, const char *psNodeName,
xmlNsPtr psNs, hashTableObj *metadata,
const char *psNamespaces,
const char *psMetadataName,
const char *psDefaultValue)
{
xmlNodePtr psNode = NULL;
char *psValue = NULL;
if (psParent && psNodeName)
{
psValue = msOWSGetEncodeMetadata(metadata, psNamespaces, psMetadataName,
psDefaultValue);
if (psValue)
{
psNode = xmlNewChild(psParent, NULL, BAD_CAST psNodeName, BAD_CAST psValue);
if (psNs)
xmlSetNs(psNode, psNs);
free(psValue);
}
}
}
/************************************************************************/
/* msSOSGetFirstLayerForOffering */
/* */
/* return the first layer for the offering. */
/************************************************************************/
layerObj *msSOSGetFirstLayerForOffering(mapObj *map, const char *pszOffering,
const char *pszProperty)
{
layerObj *lp = NULL;
const char *pszTmp = NULL;
int i = 0;
if (pszOffering && map)
{
for (i=0; i<map->numlayers; i++)
{
pszTmp =
msOWSLookupMetadata(&(GET_LAYER(map, i)->metadata), "S", "offering_id");
if (pszTmp && (strcasecmp(pszTmp, pszOffering) == 0))
{
if (pszProperty)
{
pszTmp =
msOWSLookupMetadata(&(GET_LAYER(map, i)->metadata), "S",
"observedproperty_id");
if (pszTmp && (strcasecmp(pszTmp, pszProperty) == 0))
{
lp = (GET_LAYER(map, i));
break;
}
}
else
{
lp = (GET_LAYER(map, i));
break;
}
}
}
}
return lp;
}
xmlNodePtr msSOSAddTimeNode(xmlNsPtr psNs, xmlNsPtr psNsGml, char *pszStart, char *pszEnd) {
xmlNodePtr psNode=NULL,psTimeNode=NULL;
char *timeel= NULL;
if (strcmp((char *)psNs->prefix,"sos") == 0)
timeel = "time";
if (strcmp((char *)psNs->prefix,"om") == 0)
timeel = "samplingTime";
else
timeel = "time";
psNode = xmlNewNode(psNs, BAD_CAST timeel);
psTimeNode = xmlAddChild(psNode, msGML3TimePeriod(psNsGml, pszStart, pszEnd));
return psNode;
}
void msSOSAddPropertyNode(xmlNsPtr psNsSwe, xmlNsPtr psNsXLink, xmlNodePtr psParent, layerObj *lp, xmlNsPtr psNsGml, char *pszCompositePhenomenonId)
{
const char *pszValue = NULL;
char *pszTmpVal = NULL, *pszFullName = NULL;
xmlNodePtr psCompNode, psNode;
int i, j=0;
char szTmp[256];
const char *pszComponentBase = "urn:ogc:def:property:";
if (psParent && lp)
{
psNode = xmlNewChild(psParent, NULL, BAD_CAST "observedProperty", NULL);
psCompNode = xmlNewChild(psNode, psNsSwe, BAD_CAST "CompositePhenomenon", NULL);
pszValue = msOWSLookupMetadata(&(lp->metadata), "S",
"observedproperty_id");
pszTmpVal = msStrdup(pszValue);
if (pszCompositePhenomenonId != NULL) { /* unique value needs to be constructed */
pszTmpVal = msStringConcatenate(pszTmpVal, "_");
pszTmpVal = msStringConcatenate(pszTmpVal, pszCompositePhenomenonId);
}
if (pszTmpVal)/*should always be true */ {
xmlNewNsProp(psCompNode, psNsGml, BAD_CAST "id", BAD_CAST pszTmpVal);
msFree(pszTmpVal);
}
pszValue = msOWSLookupMetadata(&(lp->metadata), "S",
"observedproperty_name");
if (pszValue)
psNode = xmlNewChild(psCompNode, psNsGml,
BAD_CAST "name", BAD_CAST pszValue);
/* add components */
/*assuming that the layer is opened and msLayerGetItems called*/
for(i=0; i<lp->numitems; i++)
{
pszValue = msOWSLookupMetadata(&(lp->metadata), "S", "observedproperty_authority");
if (pszValue)
pszTmpVal = msStrdup(pszValue);
else
pszTmpVal = msStrdup("OGC-SWE");
pszFullName = msStrdup(pszComponentBase);
pszFullName = msStringConcatenate(pszFullName, pszTmpVal);
free(pszTmpVal);
pszFullName = msStringConcatenate(pszFullName, ":");
pszValue = msOWSLookupMetadata(&(lp->metadata), "S", "observedproperty_version");
if (pszValue)
pszTmpVal = msStrdup(pszValue);
else
pszTmpVal = msStrdup("1");
pszFullName = msStringConcatenate(pszFullName, pszTmpVal);
free(pszTmpVal);
pszFullName = msStringConcatenate(pszFullName, ":");
snprintf(szTmp, sizeof(szTmp), "%s_alias", lp->items[i]);
pszValue = msOWSLookupMetadata(&(lp->metadata), "S", szTmp);
if (pszValue)
pszTmpVal = msStrdup(pszValue);
else
pszTmpVal = msStrdup(lp->items[i]);
pszFullName = msStringConcatenate(pszFullName, pszTmpVal);
psNode = xmlNewChild(psCompNode, psNsSwe, BAD_CAST "component", NULL);
xmlNewNsProp(psNode, psNsXLink, BAD_CAST "href", BAD_CAST pszFullName);
free(pszFullName);
free(pszTmpVal);
j++;
}
pszTmpVal = msIntToString(j);
xmlNewNsProp(psCompNode, NULL, BAD_CAST "dimension", BAD_CAST pszTmpVal);
free(pszTmpVal);
}
}
/************************************************************************/
/* msSOSAddGeometryNode */
/* */
/* Outout gml 2 gemptry nodes based on a shape. All logic comes */
/* from gmlWriteGeometry_GML2. Should be merged at one point if */
/* possible. */
/************************************************************************/
void msSOSAddGeometryNode(xmlNsPtr psNsGml, xmlNsPtr psNsMs, xmlNodePtr psParent, mapObj *map, layerObj *lp, shapeObj *psShape,
const char *pszEpsg)
{
char *pszTmp = NULL;
int i,j = 0;
xmlNodePtr psPointNode, psNode, psLineNode, psPolygonNode;
int *panOuterList = NULL, *panInnerList = NULL;
if (psParent && psShape)
{
if (msProjectionsDiffer(&map->projection, &lp->projection) == MS_TRUE)
{
msProjectShape(&lp->projection, &map->projection, psShape);
pszEpsg = msOWSGetEPSGProj(&(map->projection), &(lp->metadata), "SO", MS_TRUE);
}
switch(psShape->type)
{
case(MS_SHAPE_POINT):
psNode = xmlNewChild(psParent, NULL, BAD_CAST "msGeometry", NULL);
xmlSetNs(psNode, psNsMs);
if (psShape->line[0].numpoints > 1)
{
psPointNode = xmlNewChild(psNode, NULL, BAD_CAST "MultiPoint", NULL);
xmlSetNs(psPointNode, psNsGml);
if (pszEpsg)
xmlNewProp(psPointNode, BAD_CAST "srsName", BAD_CAST pszEpsg);
}
else
psPointNode= psNode;
/*add all points */
for(i=0; i<psShape->line[0].numpoints; i++)
{
psNode = xmlAddChild(psPointNode, msGML3Point(psNsGml, pszEpsg, NULL, psShape->line[0].point[i].x, psShape->line[0].point[i].y));
}
break;
case(MS_SHAPE_LINE):
psNode = xmlNewChild(psParent, NULL, BAD_CAST "msGeometry", NULL);
xmlSetNs(psNode,xmlNewNs(psNode, NULL, NULL));
if (psShape->numlines > 1)
{
psLineNode = xmlNewChild(psNode, NULL, BAD_CAST "MultiLineString", NULL);
xmlSetNs(psLineNode,xmlNewNs(psLineNode,
BAD_CAST "http://www.opengis.net/gml",
BAD_CAST "gml"));
if (pszEpsg)
xmlNewProp(psLineNode, BAD_CAST "srsName", BAD_CAST pszEpsg);
}
else
psLineNode= psNode;
for(i=0; i<psShape->numlines; i++)
{
if (psShape->numlines > 1)
{
psNode = xmlNewChild(psLineNode, NULL, BAD_CAST "lineStringMember", NULL);
xmlSetNs(psNode,xmlNewNs(psNode,
BAD_CAST "http://www.opengis.net/gml",
BAD_CAST "gml"));
psNode = xmlNewChild(psNode, NULL, BAD_CAST "LineString", NULL);
xmlSetNs(psNode,xmlNewNs(psNode,
BAD_CAST "http://www.opengis.net/gml",
BAD_CAST "gml"));
}
else
{
psNode = xmlNewChild(psLineNode, NULL, BAD_CAST "LineString", NULL);
xmlSetNs(psNode,xmlNewNs(psNode,
BAD_CAST "http://www.opengis.net/gml",
BAD_CAST "gml"));
}
if (pszEpsg)
xmlNewProp(psNode, BAD_CAST "srsName", BAD_CAST pszEpsg);
pszTmp = NULL;
for(j=0; j<psShape->line[i].numpoints; j++)
{
pszTmp = msStringConcatenate(pszTmp,
msDoubleToString(psShape->line[i].point[j].x, MS_TRUE));
pszTmp = msStringConcatenate(pszTmp, ",");
pszTmp = msStringConcatenate(pszTmp,
msDoubleToString(psShape->line[i].point[j].y, MS_TRUE));
pszTmp = msStringConcatenate(pszTmp, " ");
}
psNode = xmlNewChild(psNode, NULL, BAD_CAST "coordinates", BAD_CAST pszTmp);
xmlSetNs(psNode,xmlNewNs(psNode, BAD_CAST "http://www.opengis.net/gml", BAD_CAST "gml"));
free(pszTmp);
}
break;
case(MS_SHAPE_POLYGON):
psNode = xmlNewChild(psParent, NULL, BAD_CAST "msGeometry", NULL);
xmlSetNs(psNode,xmlNewNs(psNode, NULL, NULL));
if (psShape->numlines > 1)
{
psPolygonNode = xmlNewChild(psNode, NULL, BAD_CAST "MultiPolygon", NULL);
xmlSetNs(psPolygonNode,
xmlNewNs(psPolygonNode, BAD_CAST "http://www.opengis.net/gml",
BAD_CAST "gml"));
if (pszEpsg)
xmlNewProp(psPolygonNode, BAD_CAST "srsName", BAD_CAST pszEpsg);
}
else
psPolygonNode= psNode;
panOuterList = msGetOuterList(psShape);
for(i=0; i<psShape->numlines; i++)
{
if(panOuterList[i] != MS_TRUE)
continue;
panInnerList = msGetInnerList(psShape, i, panOuterList);
if (psShape->numlines > 1)
{
psNode = xmlNewChild(psPolygonNode, NULL, BAD_CAST "polygonMember", NULL);
xmlSetNs(psNode,xmlNewNs(psNode, BAD_CAST "http://www.opengis.net/gml",
BAD_CAST "gml"));
psNode = xmlNewChild(psNode, NULL, BAD_CAST "Polygon", NULL);
xmlSetNs(psNode,xmlNewNs(psNode, BAD_CAST "http://www.opengis.net/gml",
BAD_CAST "gml"));
}
else
{
psNode = xmlNewChild(psPolygonNode, NULL, BAD_CAST "Polygon", NULL);
xmlSetNs(psNode,xmlNewNs(psNode, BAD_CAST "http://www.opengis.net/gml",
BAD_CAST "gml"));
}
if (pszEpsg)
xmlNewProp(psNode, BAD_CAST "srsName", BAD_CAST pszEpsg);
psNode = xmlNewChild(psNode, NULL, BAD_CAST "outerBoundaryIs", NULL);
xmlSetNs(psNode,xmlNewNs(psNode, BAD_CAST "http://www.opengis.net/gml",
BAD_CAST "gml"));
psNode = xmlNewChild(psNode, NULL, BAD_CAST "LinearRing", NULL);
xmlSetNs(psNode,xmlNewNs(psNode, BAD_CAST "http://www.opengis.net/gml",
BAD_CAST "gml"));
pszTmp = NULL;
for(j=0; j<psShape->line[i].numpoints; j++)
{
pszTmp =
msStringConcatenate(pszTmp,
msDoubleToString(psShape->line[i].point[j].x, MS_TRUE));
pszTmp = msStringConcatenate(pszTmp, ",");
pszTmp =
msStringConcatenate(pszTmp,
msDoubleToString(psShape->line[i].point[j].y, MS_TRUE));
pszTmp = msStringConcatenate(pszTmp, " ");
}
psNode = xmlNewChild(psNode, NULL, BAD_CAST "coordinates", BAD_CAST pszTmp);
xmlSetNs(psNode,xmlNewNs(psNode,
BAD_CAST "http://www.opengis.net/gml",
BAD_CAST "gml"));
free(pszTmp);
if (panInnerList)
free(panInnerList);
}
if (panOuterList)
free(panOuterList);
break;
default:
break;
}
}
}
/************************************************************************/
/* void msSOSAddDataBlockDefinition(xmlNodePtr psParent, */
/* layerObj *lp) */
/* */
/* Add a databalock used for GetObservation request. */
/************************************************************************/
void msSOSAddDataBlockDefinition(xmlNsPtr psNsSwe, xmlNodePtr psParent, layerObj *lp)
{
xmlNodePtr psNode, psRecordNode, psCompNode, psSubNode, psEncNode;
const char *pszDefinition = NULL, *pszUom=NULL, *pszValue=NULL, *pszName=NULL;
char szTmp[100];
int i=0;
char *pszTokenValue = NULL;
char *pszBlockValue = NULL;
const char *pszBlockSep=NULL, *pszTokenSep=NULL;
if (psParent)
{
psNode = xmlNewChild(psParent, NULL, BAD_CAST "DataBlockDefinition", NULL);
xmlSetNs(psNode, psNsSwe);
/* -------------------------------------------------------------------- */
/* Add components. */
/* -------------------------------------------------------------------- */
psCompNode = xmlNewChild(psNode, NULL, BAD_CAST "components", NULL);
psEncNode = xmlNewChild(psNode, NULL, BAD_CAST "encoding", NULL);
psRecordNode = xmlNewChild(psCompNode, NULL, BAD_CAST "DataRecord", NULL);
/*always add a time field if timeitem is defined*/
if (msOWSLookupMetadata(&(lp->metadata), "SO", "timeitem"))
{
psNode = xmlNewChild(psRecordNode, NULL, BAD_CAST "field", NULL);
xmlNewNsProp(psNode, NULL, BAD_CAST "name", BAD_CAST "time");
psNode = xmlNewChild(psNode, NULL, BAD_CAST "Time", NULL);
xmlNewNsProp(psNode, NULL, BAD_CAST "definition", BAD_CAST "urn:ogc:phenomenon:time:iso8601");
}
/*add all other fields*/
/*assuming that the layer is open */
for(i=0; i<lp->numitems; i++)
{
snprintf(szTmp, sizeof(szTmp), "%s_alias", lp->items[i]);
pszValue = msOWSLookupMetadata(&(lp->metadata), "S", szTmp);
if (pszValue)
{
psNode = xmlNewChild(psRecordNode, NULL, BAD_CAST "field", NULL);
/* check if there is an alias/full name used */
snprintf(szTmp, sizeof(szTmp), "%s_alias", lp->items[i]);
pszName = msOWSLookupMetadata(&(lp->metadata), "S", szTmp);
if (!pszName)
pszName = lp->items[i];
xmlNewNsProp(psNode, NULL, BAD_CAST "name", BAD_CAST pszName);
psNode = xmlNewChild(psNode, NULL, BAD_CAST "Quantity", NULL);
/* get definition and uom */
snprintf(szTmp, sizeof(szTmp), "%s_definition", lp->items[i]);
pszDefinition = msOWSLookupMetadata(&(lp->metadata), "S", szTmp);
if (pszDefinition == NULL)
pszDefinition = "urn:ogc:object:definition";
xmlNewNsProp(psNode, NULL, BAD_CAST "definition", BAD_CAST pszDefinition);
snprintf(szTmp, sizeof(szTmp), "%s_uom", lp->items[i]);
pszUom = msOWSLookupMetadata(&(lp->metadata), "S", szTmp);
if (pszUom == NULL)
pszUom = "urn:ogc:object:uom";
psNode = xmlNewChild(psNode, NULL, BAD_CAST "uom", NULL);
xmlNewNsProp(psNode, NULL, BAD_CAST "code", BAD_CAST pszUom);
}
}
/* -------------------------------------------------------------------- */
/* Add encoding block. */
/* -------------------------------------------------------------------- */
pszBlockSep = msOWSLookupMetadata(&(lp->map->web.metadata), "S",
"encoding_blockSeparator");
pszTokenSep = msOWSLookupMetadata(&(lp->map->web.metadata), "S",
"encoding_tokenSeparator");
psSubNode = xmlNewChild(psEncNode, NULL, BAD_CAST "TextBlock", NULL);
if (pszTokenSep)
pszTokenValue = msStringConcatenate(pszTokenValue, (char *)pszTokenSep);
else
pszTokenValue = msStringConcatenate(pszTokenValue, ",");
xmlNewNsProp(psSubNode, NULL, BAD_CAST "tokenSeparator", BAD_CAST pszTokenValue);
if (pszBlockSep)
pszBlockValue = msStringConcatenate(pszBlockValue, (char *)pszBlockSep);
else
pszBlockValue = msStringConcatenate(pszBlockValue, "\n");
xmlNewNsProp(psSubNode, NULL, BAD_CAST "blockSeparator", BAD_CAST pszBlockValue);
xmlNewNsProp(psSubNode, NULL, BAD_CAST "decimalSeparator", BAD_CAST ".");
msFree(pszTokenValue);
msFree(pszBlockValue);
}
}
/************************************************************************/
/* msSOSAddMemberNode */
/* */
/* Add a memeber node corresponding to a feature. */
/* Assuming that the layer is opened and msLayerGetItems is */
/* called on it. */
/************************************************************************/
void msSOSAddMemberNode(xmlNsPtr psNsGml, xmlNsPtr psNsOm, xmlNsPtr psNsSwe, xmlNsPtr psNsXLink, xmlNsPtr psNsMs, xmlNodePtr psParent, mapObj *map, layerObj *lp,
int iFeatureId, const char *script_url, const char *opLayerName)
{
xmlNodePtr psObsNode, psNode, psSubNode, psLayerNode = NULL;
const char *pszEpsg = NULL, *pszValue = NULL;
int status,i,j;
shapeObj sShape;
char szTmp[256];
layerObj *lpfirst = NULL;
const char *pszTimeField = NULL;
char *pszTmp = NULL;
char *pszOid = NULL;
char *pszTime = NULL;
char *pszValueShape = NULL;
const char *pszFeatureId = NULL;
if (psParent)
{
msInitShape(&sShape);
status = msLayerGetShape(lp, &sShape, &(lp->resultcache->results[iFeatureId]));
if(status != MS_SUCCESS) {
xmlFreeNs(psNsOm);
return;
}
psNode = xmlNewChild(psParent, NULL, BAD_CAST "member", NULL);
psObsNode = xmlNewChild(psNode, NULL, BAD_CAST "Observation", BAD_CAST pszValue);
pszFeatureId = msOWSLookupMetadata(&(lp->metadata), "OSG", "featureid");
if(pszFeatureId && msLayerGetItems(lp) == MS_SUCCESS)
{ /* find the featureid amongst the items for this layer */
for(j=0; j<lp->numitems; j++) {
if(strcasecmp(lp->items[j], pszFeatureId) == 0) { /* found it */
break;
}
}
if (j<lp->numitems) {
pszOid = msStringConcatenate(pszOid, "o_");
pszOid = msStringConcatenate(pszOid, sShape.values[j]);
xmlNewNsProp(psObsNode, psNsGml, BAD_CAST "id", BAD_CAST pszOid);
}
}
/* order of elements is time, location, procedure, observedproperty
featureofinterest, result */
/* time*/
pszTimeField = msOWSLookupMetadata(&(lp->metadata), "SO",
"timeitem");
if (pszTimeField && sShape.values)
{
for(i=0; i<lp->numitems; i++)
{
if (strcasecmp(lp->items[i], pszTimeField) == 0)
{
if (sShape.values[i] && strlen(sShape.values[i]) > 0)
{
pszTime = msStringConcatenate(pszTime, sShape.values[i]);
psNode = xmlNewChild(psObsNode, psNsOm, BAD_CAST "samplingTime", NULL);
psSubNode = xmlAddChild(psNode, msGML3TimeInstant(psNsGml, pszTime));
msFree(pszTime);
}
break;
}
}
}
/*TODO add location*/
/*procedure*/
/* if a procedure_item is defined, we should extract the value for the
attributes. If not dump what is found in the procedure metadata bug 2054*/
if ((pszValue = msOWSLookupMetadata(&(lp->metadata), "S", "procedure_item")))
{
lpfirst = msSOSGetFirstLayerForOffering(map,
msOWSLookupMetadata(&(lp->metadata), "S",
"offering_id"),
msOWSLookupMetadata(&(lp->metadata), "S",
"observedproperty_id"));
if (lp != lpfirst)
status = msLayerOpen(lpfirst);
if (status == MS_SUCCESS && msLayerGetItems(lpfirst) == MS_SUCCESS)
{
for(i=0; i<lpfirst->numitems; i++)
{
if (strcasecmp(lpfirst->items[i], pszValue) == 0)
{
break;
}
}
if (i < lpfirst->numitems)
{
snprintf(szTmp, sizeof(szTmp), "%s", "urn:ogc:def:procedure:");
pszTmp = msStringConcatenate(pszTmp, szTmp);
pszValueShape = msEncodeHTMLEntities(sShape.values[i]);
pszTmp = msStringConcatenate(pszTmp, pszValueShape);
psNode = xmlNewChild(psObsNode, NULL, BAD_CAST "procedure", NULL);
xmlNewNsProp(psNode, psNsXLink, BAD_CAST "href", BAD_CAST pszTmp);
msFree(pszTmp);
pszTmp = NULL;
msFree(pszValueShape);
}
/*else should we generate a warning !*/
if (lp != lpfirst)
msLayerClose(lpfirst);
}
}
else if ((pszValue = msOWSLookupMetadata(&(lp->metadata), "S", "procedure")))
{
if (! msOWSLookupMetadata(&(lp->metadata), "S", "procedure_item"))
xmlAddSibling(psNode, xmlNewComment(BAD_CAST "WARNING: Optional metadata \"sos_procedure_item\" missing for sos:procedure. If you have more than 1 procedures, sos:procedure will output them incorrectly."));
snprintf(szTmp, sizeof(szTmp), "%s", "urn:ogc:def:procedure:");
pszTmp = msStringConcatenate(pszTmp, szTmp);
pszTmp = msStringConcatenate(pszTmp, (char *)pszValue);
psNode = xmlNewChild(psObsNode, NULL, BAD_CAST "procedure", NULL);
xmlNewNsProp(psNode, psNsXLink, BAD_CAST "href", BAD_CAST pszTmp);
msFree(pszTmp);
pszTmp = NULL;
}
/*observed property*/
pszValue = msOWSLookupMetadata(&(lp->metadata), "S",
"observedproperty_id");
if (pszValue)
msSOSAddPropertyNode(psNsSwe, psNsXLink, psObsNode, lp, psNsGml, pszOid);
msFree(pszOid);
pszOid = NULL;
/*TODO add featureofinterest*/
pszTmp = msStringConcatenate(pszTmp, (char *) script_url);
pszTmp = msStringConcatenate(pszTmp, "service=WFS&version=1.1.0&request=DescribeFeatureType&typename=");
pszTmp = msStringConcatenate(pszTmp, (char *) opLayerName);
psNode = xmlNewChild(psObsNode, psNsOm, BAD_CAST "featureOfInterest", NULL);
xmlNewNsProp(psNode, psNsXLink, BAD_CAST "href", BAD_CAST pszTmp);
msFree(pszTmp);
pszTmp=NULL;
/* add result : gml:featureMember of all selected elements */
psNode = xmlNewChild(psObsNode, NULL, BAD_CAST "result", NULL);
/*TODO should we add soemwhere the units of the value :
<om:result uom="units.xml#cm">29.00</om:result> */
#ifdef USE_PROJ
if(msProjectionsDiffer(&(lp->projection), &(map->projection)))
msProjectShape(&lp->projection, &lp->projection, &sShape);
#endif
psNode = xmlNewChild(psNode, psNsGml, BAD_CAST "featureMember", NULL);
/* xmlSetNs(psNode,xmlNewNs(psNode, BAD_CAST "http://www.opengis.net/gml", BAD_CAST "gml")); */
/*TODO : add namespaces like wfs " ms and a url to mapserve ? */
psLayerNode = xmlNewChild(psNode, psNsMs, BAD_CAST lp->name, NULL);
/* fetch gml:id */
pszFeatureId = msOWSLookupMetadata(&(lp->metadata), "OSG", "featureid");
if(pszFeatureId && msLayerOpen(lp) == MS_SUCCESS && msLayerGetItems(lp) == MS_SUCCESS)
xmlSetNs(psLayerNode,psNsMs);
/*bbox*/
#ifdef USE_PROJ
pszEpsg = msOWSGetEPSGProj(&(map->projection), &(lp->metadata), "SO", MS_TRUE);
if (!pszEpsg)
pszEpsg = msOWSGetEPSGProj(&(lp->projection), &(lp->metadata), "SO", MS_TRUE);
if (msProjectionsDiffer(&map->projection, &lp->projection) == MS_TRUE)
msProjectRect(&lp->projection, &map->projection, &sShape.bounds);
#endif
psNode = xmlAddChild(psLayerNode, msGML3BoundedBy(psNsGml, sShape.bounds.minx, sShape.bounds.miny, sShape.bounds.maxx, sShape.bounds.maxy, pszEpsg));
/*geometry*/
msSOSAddGeometryNode(psNsGml, psNsMs, psLayerNode, map, lp, &sShape, pszEpsg);
/*attributes */
/* TODO only output attributes where there is a sos_%s_alias (to be discussed)*/
/* the first layer is the one that has to have all the metadata defined */
lpfirst = msSOSGetFirstLayerForOffering(map,
msOWSLookupMetadata(&(lp->metadata), "S",
"offering_id"),
msOWSLookupMetadata(&(lp->metadata), "S",
"observedproperty_id"));
if (lpfirst && msLayerOpen(lpfirst) == MS_SUCCESS &&
msLayerGetItems(lpfirst) == MS_SUCCESS)
{
for(i=0; i<lpfirst->numitems; i++)
{
snprintf(szTmp, sizeof(szTmp), "%s_alias", lpfirst->items[i]);
pszValue = msOWSLookupMetadata(&(lpfirst->metadata), "S", szTmp);
if (pszValue)
{
for (j=0; j<lp->numitems; j++)
{
if (strcasecmp(lpfirst->items[i], lpfirst->items[j]) == 0)
{
/*if there is an alias used, use it to output the
parameter name : eg "sos_AMMON_DIS_alias" "Amonia" */
snprintf(szTmp, sizeof(szTmp), "%s_alias", lpfirst->items[i]);
pszValue = msOWSLookupMetadata(&(lpfirst->metadata), "S", szTmp);
pszValueShape = msEncodeHTMLEntities(sShape.values[j]);
if (pszValue)
{
pszTmp = msEncodeHTMLEntities(pszValue);
psNode = xmlNewChild(psLayerNode, psNsMs, BAD_CAST pszValue,
BAD_CAST pszValueShape);
free(pszTmp);
}
else
{
pszTmp = msEncodeHTMLEntities(lpfirst->items[i]);
psNode = xmlNewChild(psLayerNode, psNsMs,
BAD_CAST lpfirst->items[i],
BAD_CAST pszValueShape);
free(pszTmp);
}
free(pszValueShape);
xmlSetNs(psNode,psNsMs);
break;
}
}
}
}
if (lp->index != lpfirst->index)
msLayerClose(lpfirst);
}
}
msFreeShape(&sShape);
}
/************************************************************************/
/* msSOSReturnMemberResult */
/* */
/* Add a result string to the result node (used for */
/* GetObservation using "observation" as the response output. */
/* Assuming here that the layer is already opened. */
/************************************************************************/
char* msSOSReturnMemberResult(layerObj *lp, int iFeatureId, char **ppszProcedure)
{
char *pszFinalValue = NULL;
shapeObj sShape;
int i, j, status;
layerObj *lpfirst;
const char *pszTimeField = NULL, *pszValue=NULL, *pszProcedureField=NULL;
char *pszValueShape = NULL;
char szTmp[100];
const char *pszSep=NULL;
msInitShape(&sShape);
status = msLayerGetShape(lp, &sShape, &(lp->resultcache->results[iFeatureId]));
if(status != MS_SUCCESS)
return NULL;
pszTimeField = msOWSLookupMetadata(&(lp->metadata), "SO", "timeitem");
if (pszTimeField && sShape.values)
{
for(i=0; i<lp->numitems; i++)
{
if (strcasecmp(lp->items[i], pszTimeField) == 0)
{
pszFinalValue = msStringConcatenate(pszFinalValue, sShape.values[i]);
break;
}
}
}
if (ppszProcedure)
{
pszProcedureField = msOWSLookupMetadata(&(lp->metadata), "S", "procedure_item");
for(i=0; i<lp->numitems; i++)
{
if (strcasecmp(lp->items[i], pszProcedureField) == 0)
{
(*ppszProcedure) = msStrdup( sShape.values[i]);
break;
}
}
}
/* the first layer is the one that has to have all the metadata defined */
lpfirst = msSOSGetFirstLayerForOffering(lp->map,
msOWSLookupMetadata(&(lp->metadata), "S",
"offering_id"),
msOWSLookupMetadata(&(lp->metadata), "S",
"observedproperty_id"));
if (lp == lpfirst || (lpfirst && msLayerOpen(lpfirst) == MS_SUCCESS &&
msLayerGetItems(lpfirst) == MS_SUCCESS))
{
pszSep = msOWSLookupMetadata(&(lp->map->web.metadata), "S",
"encoding_tokenSeparator");
for(i=0; i<lpfirst->numitems; i++)
{
snprintf(szTmp, sizeof(szTmp), "%s_alias", lpfirst->items[i]);
pszValue = msOWSLookupMetadata(&(lpfirst->metadata), "S", szTmp);
if (pszValue)
{
for (j=0; j<lp->numitems; j++)
{
if (strcasecmp(lpfirst->items[i], lpfirst->items[j]) == 0)
{
pszValueShape = msEncodeHTMLEntities(sShape.values[j]);
if (pszFinalValue)
{
if (pszSep)
pszFinalValue = msStringConcatenate(pszFinalValue, (char *)pszSep);
else
pszFinalValue = msStringConcatenate(pszFinalValue, ",");
}
pszFinalValue = msStringConcatenate(pszFinalValue, pszValueShape);
msFree(pszValueShape);
}