$start = -1;
$count = -1;
}
}
/* if invalid return all elements*/
if ($start < 0 || $count < 0) {
$start = 0;
$count = $properties->{$layerName}->numelements;
}
//print_r($properties->$layerName);
$result->{$layerName}->numelements = $count;
$result->{$layerName}->values = array();
$result->{$layerName}->metadata = array();
$iIndice = 0;
for ($j = $start; $j < $start + $count; $j++) {
$szLayerProjection = getLayerProjection($oMap, $layerName);
$oLayerExtents = $result->{$layerName}->bbox;
if ($szLayerProjection) {
if ($szLayerProjection != $oMapProjection) {
$minx = $oLayerExtents->minx;
$miny = $oLayerExtents->miny;
$maxx = $oLayerExtents->maxx;
$maxy = $oLayerExtents->maxy;
reprojectPoint(&$minx, &$miny, $szLayerProjection, $oMapProjection);
reprojectPoint(&$maxx, &$maxy, $szLayerProjection, $oMapProjection);
$result->extents->minx = $minx;
$result->extents->miny = $miny;
$result->extents->maxx = $maxx;
$result->extents->maxy = $maxy;
}
}
function get_layer_details($layer_tablename, $fids) {
$query='select layer_type,layer_id,color_by,size_by,participation_type, nid, p_nid,access,layer_name,max_scale, is_timebased from "Meta_Layer" where layer_tablename= \'%s\'';
$result=db_query($query, $layer_tablename);
while($row=db_fetch_object($result)) {
$layertype;
$arr_str=array();
$arr_str['layer_tablename']=$layer_tablename;
switch($row->layer_type) {
case "POINT":
case "MULTIPOINT":
$layertype='POINT';
break;
case "MULTIPOLYGON":
case "POLYGON":
$layertype='POLYGON';
break;
case "MULTILINESTRING":
case "LINE":
$layertype='LINE';
break;
default:
$layertype=$row->layer_type;
break;
}
// switch
$arr_str['layer_type']=$layertype;
$arr_str['layer_id']=$row->layer_id;
if($layertype == 'POLYGON' || $layertype == 'LINE') {
if($row->color_by == '') {
$arr_str['variation_by_column']='(No color-by column specified)';
}
else {
$col_info=getDBColDesc($layer_tablename, $row->color_by);
$color_by=str_replace("'", "", $row->color_by);
$arr_str['variation_by_column']='(' . ($col_info[$color_by] == "" ? $color_by : $col_info[$color_by]) . ')';
}
}
elseif($layertype == 'POINT') {
if($row->size_by == '') {
$arr_str['variation_by_column']='(No size-by column specified)';
}
else {
$col_info=getDBColDesc($layer_tablename, $row->size_by);
$size_by=str_replace("'", "", $row->size_by);
$arr_str['variation_by_column']='(' . ($col_info[$size_by] == "" ? $size_by : $col_info[$size_by]) . ')';
}
}
$hasAddPerm=(userHasAddFeaturePerm($layer_tablename) ? 1 : 0);
$arr_str['participation_type']=$row->participation_type;
$arr_str['nid']=$row->nid;
$arr_str['p_nid']=$row->p_nid;
$arr_str['addFeaturePerm']=$hasAddPerm;
$arr_str['projection']=getLayerProjection($layer_tablename);
$arr_str['access']=$row->access;
$arr_str['layer_name']=$row->layer_name;
$max_zoom=$row->max_scale;
if($max_zoom == NULL || $max_zoom == "" || $max_zoom < 5) {
$max_zoom=19;
}
$arr_str['max_zoom']=$max_zoom;
/*
* feature count cant be determined for raster layer,so value one
* is assigned so that the map will be zoomed to the layer extent
* when the layer is added.
*/
if('RASTER' == $layertype)
$f_count=1;
else
$f_count=getFeatureCount($layer_tablename);
$arr_str['feature_count']=$f_count;
$extent='';
if($fids != NULL) {
$extent=getLayerExtent($layer_tablename, $layertype, $fids);
}
else {
$extent=getLayerExtent($layer_tablename, $layertype);
}
$arr_str['extent']=$extent;
$arr_str['is_timebased']=$row->is_timebased;
}
print json_encode($arr_str);
}
