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/******************************************************************************
* $Id: ogrcouchdbrowslayer.cpp 22252 2011-04-28 20:59:51Z rouault $
*
* Project: CouchDB Translator
* Purpose: Implements OGRCouchDBRowsLayer class.
* Author: Even Rouault, <even dot rouault at mines dash paris dot org>
*
******************************************************************************
* Copyright (c) 2011, Even Rouault <even dot rouault at mines dash paris dot org>
*
* 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 or substantial portions of the 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.
****************************************************************************/
#include "ogr_couchdb.h"
CPL_CVSID("$Id: ogrcouchdbrowslayer.cpp 22252 2011-04-28 20:59:51Z rouault $");
/************************************************************************/
/* OGRCouchDBRowsLayer() */
/************************************************************************/
OGRCouchDBRowsLayer::OGRCouchDBRowsLayer(OGRCouchDBDataSource* poDS) :
OGRCouchDBLayer(poDS)
{
poFeatureDefn = new OGRFeatureDefn( "rows" );
poFeatureDefn->Reference();
OGRFieldDefn oFieldId("_id", OFTString);
poFeatureDefn->AddFieldDefn(&oFieldId);
OGRFieldDefn oFieldRev("_rev", OFTString);
poFeatureDefn->AddFieldDefn(&oFieldRev);
bAllInOne = FALSE;
}
/************************************************************************/
/* ~OGRCouchDBRowsLayer() */
/************************************************************************/
OGRCouchDBRowsLayer::~OGRCouchDBRowsLayer()
{
}
/************************************************************************/
/* ResetReading() */
/************************************************************************/
void OGRCouchDBRowsLayer::ResetReading()
{
OGRCouchDBLayer::ResetReading();
if (!bAllInOne)
{
json_object_put(poFeatures);
poFeatures = NULL;
aoFeatures.resize(0);
}
}
/************************************************************************/
/* FetchNextRows() */
/************************************************************************/
int OGRCouchDBRowsLayer::FetchNextRows()
{
if (bAllInOne)
return FALSE;
json_object_put(poFeatures);
poFeatures = NULL;
aoFeatures.resize(0);
int bHasEsperluet = (strstr(poDS->GetURL(), "?") != NULL);
CPLString osURI;
if (strstr(poDS->GetURL(), "limit=") == NULL &&
strstr(poDS->GetURL(), "skip=") == NULL)
{
if (!bHasEsperluet)
{
bHasEsperluet = TRUE;
osURI += "?";
}
osURI += CPLSPrintf("&limit=%d&skip=%d",
GetFeaturesToFetch(), nOffset);
}
if (strstr(poDS->GetURL(), "reduce=") == NULL)
{
if (!bHasEsperluet)
{
bHasEsperluet = TRUE;
osURI += "?";
}
osURI += "&reduce=false";
}
json_object* poAnswerObj = poDS->GET(osURI);
return FetchNextRowsAnalyseDocs(poAnswerObj);
}
/************************************************************************/
/* BuildFeatureDefn() */
/************************************************************************/
int OGRCouchDBRowsLayer::BuildFeatureDefn()
{
int bRet = FetchNextRows();
if (!bRet)
return FALSE;
bRet = BuildFeatureDefnFromRows(poFeatures);
if (!bRet)
return FALSE;
if ( bEOF )
bAllInOne = TRUE;
return TRUE;
}
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