public static function exactMatch2()
{
if (self::$exactMatch2 === null) {
self::$exactMatch2 = self::infix('===', 'IS');
}
return self::$exactMatch2;
}
public static function fieldValueFilter($scheme, $pattern, EarthIT_Schema_Field $field, EarthIT_Schema_ResourceClass $rc)
{
switch ($scheme) {
case 'not':
// Oh look this is kind of a silly way to do it:
$toBeNegated = self::parsePattern($field->getName(), $pattern, $rc);
return new EarthIT_Storage_Filter_NegatedItemFilter($toBeNegated);
case 'is':
if ($pattern === 'null') {
$comparisonOp = EarthIT_Storage_Filter_ComparisonOps::exactMatch2();
$vExp = EarthIT_Storage_Filter_NullValueExpression::getInstance();
} else {
throw new Exception("'is:' operator only supports 'null' pattern; given: " . var_export($pattern, true));
}
break;
case 'eq':
$value = EarthIT_Storage_Util::cast($pattern, $field->getType()->getPhpTypeName());
return new EarthIT_Storage_Filter_ExactMatchFieldValueFilter($field, $rc, $value);
case 'in':
$values = array();
if ($pattern === '') {
$pattern = array();
}
$patternValues = is_array($pattern) ? $pattern : explode(',', $pattern);
foreach ($patternValues as $p) {
$values[] = EarthIT_Storage_Util::cast($p, $field->getType()->getPhpTypeName());
}
if (count($values) == 0) {
return new EarthIT_Storage_Filter_OredItemFilter(array());
}
$comparisonOp = EarthIT_Storage_Filter_InListComparisonOp::getInstance();
$vExp = new EarthIT_Storage_Filter_ListValueExpression($values);
break;
case 'lt':
case 'le':
case 'ge':
case 'gt':
$comparisonOp = EarthIT_Storage_Filter_ComparisonOps::get($scheme);
$value = EarthIT_Storage_Util::cast($pattern, $field->getType()->getPhpTypeName());
$vExp = new EarthIT_Storage_Filter_ScalarValueExpression($value);
break;
case 'like':
return new EarthIT_Storage_Filter_PatternFieldValueFilter($field, $rc, $pattern, true);
default:
throw new Exception("Unrecognized pattern scheme: '{$scheme}'");
}
return new EarthIT_Storage_Filter_FieldValueComparisonFilter($field, $rc, $comparisonOp, $vExp);
}
