CPLString WFS_TurnSQLFilterToOGCFilter( const swq_expr_node* poExpr,
OGRDataSource* poDS,
OGRFeatureDefn* poFDefn,
int nVersion,
int bPropertyIsNotEqualToSupported,
int bUseFeatureId,
int bGmlObjectIdNeedsGMLPrefix,
const char* pszNSPrefix,
int* pbOutNeedsNullCheck )
{
CPLString osFilter;
/* If the filter is only made of querying one or several gml_id */
/* (with OR operator), we turn this to <GmlObjectId> list */
if (!WFS_ExprDumpGmlObjectIdFilter(osFilter, poExpr, bUseFeatureId,
bGmlObjectIdNeedsGMLPrefix, nVersion))
{
ExprDumpFilterOptions sOptions;
sOptions.nVersion = nVersion;
sOptions.bPropertyIsNotEqualToSupported = bPropertyIsNotEqualToSupported;
sOptions.bOutNeedsNullCheck = FALSE;
sOptions.poDS = poDS;
sOptions.poFDefn = poFDefn;
sOptions.nUniqueGeomGMLId = 1;
sOptions.poSRS = NULL;
sOptions.pszNSPrefix = pszNSPrefix;
osFilter = "";
if (!WFS_ExprDumpAsOGCFilter(osFilter, poExpr, TRUE, &sOptions))
osFilter = "";
/*else
CPLDebug("WFS", "Filter %s", osFilter.c_str());*/
*pbOutNeedsNullCheck = sOptions.bOutNeedsNullCheck;
}
return osFilter;
}
static int WFS_ExprDumpGmlObjectIdFilter(CPLString& osFilter,
const swq_expr_node* poExpr,
int bUseFeatureId,
int bGmlObjectIdNeedsGMLPrefix,
int nVersion)
{
if (poExpr->eNodeType == SNT_OPERATION &&
poExpr->nOperation == SWQ_EQ &&
poExpr->nSubExprCount == 2 &&
poExpr->papoSubExpr[0]->eNodeType == SNT_COLUMN &&
strcmp(poExpr->papoSubExpr[0]->string_value, "gml_id") == 0 &&
poExpr->papoSubExpr[1]->eNodeType == SNT_CONSTANT)
{
if (bUseFeatureId)
osFilter += "<FeatureId fid=\"";
else if (nVersion >= 200)
osFilter += "<ResourceId rid=\"";
else if (!bGmlObjectIdNeedsGMLPrefix)
osFilter += "<GmlObjectId id=\"";
else
osFilter += "<GmlObjectId gml:id=\"";
if( poExpr->papoSubExpr[1]->field_type == SWQ_INTEGER ||
poExpr->papoSubExpr[1]->field_type == SWQ_INTEGER64 )
osFilter += CPLSPrintf(CPL_FRMT_GIB, poExpr->papoSubExpr[1]->int_value);
else if( poExpr->papoSubExpr[1]->field_type == SWQ_STRING )
{
char* pszXML = CPLEscapeString(poExpr->papoSubExpr[1]->string_value, -1, CPLES_XML);
osFilter += pszXML;
CPLFree(pszXML);
}
else
return FALSE;
osFilter += "\"/>";
return TRUE;
}
else if (poExpr->eNodeType == SNT_OPERATION &&
poExpr->nOperation == SWQ_OR &&
poExpr->nSubExprCount == 2 )
{
return WFS_ExprDumpGmlObjectIdFilter(osFilter, poExpr->papoSubExpr[0],
bUseFeatureId, bGmlObjectIdNeedsGMLPrefix, nVersion) &&
WFS_ExprDumpGmlObjectIdFilter(osFilter, poExpr->papoSubExpr[1],
bUseFeatureId, bGmlObjectIdNeedsGMLPrefix, nVersion);
}
return FALSE;
}
static int WFS_ExprDumpGmlObjectIdFilter(CPLString& osFilter,
const Expr* expr,
int bUseFeatureId,
int bGmlObjectIdNeedsGMLPrefix,
int nVersion)
{
if (expr->eType == TOKEN_EQUAL &&
expr->expr1->eType == TOKEN_VAR_NAME &&
EQUAL(expr->expr1->pszVal, "gml_id") &&
expr->expr2->eType == TOKEN_LITERAL)
{
if (bUseFeatureId)
osFilter += "<FeatureId fid=\"";
else if (nVersion >= 200)
osFilter += "<ResourceId rid=\"";
else if (!bGmlObjectIdNeedsGMLPrefix)
osFilter += "<GmlObjectId id=\"";
else
osFilter += "<GmlObjectId gml:id=\"";
if (expr->expr2->pszVal[0] == '\'' || expr->expr2->pszVal[0] == '"')
{
CPLString osVal(expr->expr2->pszVal + 1);
osVal.resize(osVal.size() - 1);
osFilter += osVal;
}
else
osFilter += expr->expr2->pszVal;
osFilter += "\"/>";
return TRUE;
}
else if (expr->eType == TOKEN_OR)
{
return WFS_ExprDumpGmlObjectIdFilter(osFilter, expr->expr1,
bUseFeatureId, bGmlObjectIdNeedsGMLPrefix, nVersion) &&
WFS_ExprDumpGmlObjectIdFilter(osFilter, expr->expr2,
bUseFeatureId, bGmlObjectIdNeedsGMLPrefix, nVersion);
}
return FALSE;
}
CPLString WFS_TurnSQLFilterToOGCFilter( const char * pszFilter,
OGRFeatureDefn* poFDefn,
int nVersion,
int bPropertyIsNotEqualToSupported,
int bUseFeatureId,
int bGmlObjectIdNeedsGMLPrefix,
int* pbOutNeedsNullCheck )
{
char** papszTokens = WFS_ExprTokenize(pszFilter);
if (papszTokens == NULL)
return "";
char** papszTokens2 = papszTokens;
ExprBuildContext sBuildContext;
sBuildContext.bExpectVarName = TRUE;
sBuildContext.bExpectComparisonOperator = FALSE;
sBuildContext.bExpectLogicalOperator = FALSE;
sBuildContext.bExpectValue = FALSE;
sBuildContext.nParenthesisLevel = 0;
Expr* expr = WFS_ExprBuildInternal(&papszTokens2, &sBuildContext);
CSLDestroy(papszTokens);
if (expr == NULL)
return "";
CPLString osFilter;
/* If the filter is only made of querying one or several gml_id */
/* (with OR operator), we turn this to <GmlObjectId> list */
if (!WFS_ExprDumpGmlObjectIdFilter(osFilter, expr, bUseFeatureId,
bGmlObjectIdNeedsGMLPrefix, nVersion))
{
ExprDumpFilterOptions sOptions;
sOptions.nVersion = nVersion;
sOptions.bPropertyIsNotEqualToSupported = bPropertyIsNotEqualToSupported;
sOptions.bOutNeedsNullCheck = FALSE;
sOptions.poFDefn = poFDefn;
osFilter = "";
if (!WFS_ExprDumpAsOGCFilter(osFilter, expr, TRUE, &sOptions))
osFilter = "";
*pbOutNeedsNullCheck = sOptions.bOutNeedsNullCheck;
}
WFS_ExprFree(expr);
return osFilter;
}
