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;
}
static int WFS_ExprDumpAsOGCFilter(CPLString& osFilter,
const Expr* expr,
int bExpectBinary,
ExprDumpFilterOptions* psOptions)
{
switch(expr->eType)
{
case TOKEN_VAR_NAME:
if (bExpectBinary)
return FALSE;
/* Special fields not understood by server */
if (EQUAL(expr->pszVal, "gml_id") ||
EQUAL(expr->pszVal, "FID") ||
EQUAL(expr->pszVal, "OGR_GEOMETRY") ||
EQUAL(expr->pszVal, "OGR_GEOM_WKT") ||
EQUAL(expr->pszVal, "OGR_GEOM_AREA") ||
EQUAL(expr->pszVal, "OGR_STYLE"))
return FALSE;
if (psOptions->nVersion >= 200)
osFilter += "<ValueReference>";
else
osFilter += "<PropertyName>";
if (expr->pszVal[0] == '\'' || expr->pszVal[0] == '"')
{
CPLString osVal(expr->pszVal + 1);
osVal.resize(osVal.size() - 1);
osFilter += osVal;
}
else
osFilter += expr->pszVal;
if (psOptions->nVersion >= 200)
osFilter += "</ValueReference>";
else
osFilter += "</PropertyName>";
break;
case TOKEN_LITERAL:
if (bExpectBinary)
return FALSE;
osFilter += "<Literal>";
if (expr->pszVal[0] == '\'' || expr->pszVal[0] == '"')
{
CPLString osVal(expr->pszVal + 1);
osVal.resize(osVal.size() - 1);
osFilter += osVal;
}
else
osFilter += expr->pszVal;
osFilter += "</Literal>";
break;
case TOKEN_NOT:
osFilter += "<Not>";
if (!WFS_ExprDumpAsOGCFilter(osFilter, expr->expr1, TRUE, psOptions))
return FALSE;
osFilter += "</Not>";
break;
case TOKEN_LIKE:
{
CPLString osVal;
char ch;
char firstCh = 0;
int i;
if (psOptions->nVersion == 100)
osFilter += "<PropertyIsLike wildCard='*' singleChar='_' escape='!'>";
else
osFilter += "<PropertyIsLike wildCard='*' singleChar='_' escapeChar='!'>";
if (!WFS_ExprDumpAsOGCFilter(osFilter, expr->expr1, FALSE, psOptions))
return FALSE;
if (expr->expr2->eType != TOKEN_LITERAL)
return FALSE;
osFilter += "<Literal>";
/* Escape value according to above special characters */
/* For URL compatibility reason, we remap the OGR SQL '%' wildchard into '*' */
i = 0;
ch = expr->expr2->pszVal[i];
if (ch == '\'' || ch == '"')
{
firstCh = ch;
i ++;
}
for(;(ch = expr->expr2->pszVal[i]) != '\0';i++)
{
if (ch == '%')
osVal += "*";
else if (ch == '!')
osVal += "!!";
else if (ch == '*')
osVal += "!*";
else if (ch == firstCh && expr->expr2->pszVal[i + 1] == 0)
break;
else
{
char ach[2];
ach[0] = ch;
ach[1] = 0;
osVal += ach;
}
}
osFilter += osVal;
osFilter += "</Literal>";
osFilter += "</PropertyIsLike>";
break;
}
case TOKEN_EQUAL:
case TOKEN_NOT_EQUAL:
case TOKEN_LESSER_OR_EQUAL:
case TOKEN_LESSER:
case TOKEN_GREATER_OR_EQUAL:
case TOKEN_GREATER:
{
if (expr->eType == TOKEN_EQUAL && expr->expr2->eType == TOKEN_LITERAL &&
EQUAL(expr->expr2->pszVal, "NULL"))
{
osFilter += "<PropertyIsNull>";
if (!WFS_ExprDumpAsOGCFilter(osFilter, expr->expr1, FALSE, psOptions))
return FALSE;
osFilter += "</PropertyIsNull>";
psOptions->bOutNeedsNullCheck = TRUE;
break;
}
if (expr->eType == TOKEN_NOT_EQUAL && expr->expr2->eType == TOKEN_LITERAL &&
EQUAL(expr->expr2->pszVal, "NULL"))
{
osFilter += "<Not><PropertyIsNull>";
if (!WFS_ExprDumpAsOGCFilter(osFilter, expr->expr1, FALSE, psOptions))
return FALSE;
osFilter += "</PropertyIsNull></Not>";
psOptions->bOutNeedsNullCheck = TRUE;
break;
}
TokenType eType = expr->eType;
int bAddClosingNot = FALSE;
if (!psOptions->bPropertyIsNotEqualToSupported && eType == TOKEN_NOT_EQUAL)
{
osFilter += "<Not>";
eType = TOKEN_EQUAL;
bAddClosingNot = TRUE;
}
const char* pszName = NULL;
switch(eType)
{
case TOKEN_EQUAL: pszName = "PropertyIsEqualTo"; break;
case TOKEN_NOT_EQUAL: pszName = "PropertyIsNotEqualTo"; break;
case TOKEN_LESSER_OR_EQUAL: pszName = "PropertyIsLessThanOrEqualTo"; break;
case TOKEN_LESSER: pszName = "PropertyIsLessThan"; break;
case TOKEN_GREATER_OR_EQUAL:pszName = "PropertyIsGreaterThanOrEqualTo"; break;
case TOKEN_GREATER: pszName = "PropertyIsGreaterThan"; break;
default: break;
}
osFilter += "<";
osFilter += pszName;
osFilter += ">";
if (!WFS_ExprDumpAsOGCFilter(osFilter, expr->expr1, FALSE, psOptions))
return FALSE;
if (!WFS_ExprDumpAsOGCFilter(osFilter, expr->expr2, FALSE, psOptions))
return FALSE;
osFilter += "</";
osFilter += pszName;
osFilter += ">";
if (bAddClosingNot)
osFilter += "</Not>";
break;
}
case TOKEN_AND:
case TOKEN_OR:
{
const char* pszName = (expr->eType == TOKEN_AND) ? "And" : "Or";
osFilter += "<";
osFilter += pszName;
osFilter += ">";
if (!WFS_ExprDumpAsOGCFilter(osFilter, expr->expr1, TRUE, psOptions))
return FALSE;
if (!WFS_ExprDumpAsOGCFilter(osFilter, expr->expr2, TRUE, psOptions))
return FALSE;
osFilter += "</";
osFilter += pszName;
osFilter += ">";
break;
}
default:
return FALSE;
}
return TRUE;
}