always get back empty feature collection from RectangularClip

[bartvde]

@dwins am I doing something obvious wrong here with the request:

<p0:Execute xmlns:p0="http://www.opengis.net/wps/1.0.0" service="WPS" version="1.0.0">
    <p1:Identifier xmlns:p1="http://www.opengis.net/ows/1.1">vec:RectangularClip</p1:Identifier>
    <p0:DataInputs>
        <p0:Input>
            <p1:Identifier xmlns:p1="http://www.opengis.net/ows/1.1">features</p1:Identifier>
            <p0:Reference p3:href="http://geoserver/wfs" xmlns:p3="http://www.w3.org/1999/xlink"
                method="POST" mimeType="text/xml">
                <p0:Body><p2:GetFeature xmlns:p2="http://www.opengis.net/wfs" service="WFS"
                        version="1.1.0" outputFormat="GML2"><p2:Query typeName="opengeo:streams"
                            srsName="EPSG:3857"/></p2:GetFeature></p0:Body>
            </p0:Reference>
        </p0:Input>
        <p0:Input>
            <p1:Identifier xmlns:p1="http://www.opengis.net/ows/1.1">clip</p1:Identifier>
            <p0:Data>
                <p0:BoundingBoxData crs="EPSG:4326">
                    <p1:LowerCorner xmlns:p1="http://www.opengis.net/ows/1.1">-120.23437499999999
                        25.165173368663957</p1:LowerCorner>
                    <p1:UpperCorner xmlns:p1="http://www.opengis.net/ows/1.1">-70.3125
                        54.1624339680678</p1:UpperCorner>
                </p0:BoundingBoxData>
            </p0:Data>
        </p0:Input>
    </p0:DataInputs>
    <p0:ResponseForm>
        <p0:RawDataOutput mimeType="text/xml; subtype=wfs-collection/1.1">
            <p1:Identifier xmlns:p1="http://www.opengis.net/ows/1.1">result</p1:Identifier>
        </p0:RawDataOutput>
    </p0:ResponseForm>
</p0:Execute>

I always get this response:

<?xml version="1.0" encoding="UTF-8"?><wfs:FeatureCollection xmlns:wfs="http://www.opengis.net/wfs" xmlns:feature="http://opengeo.org" xmlns:ogc="http://www.opengis.net/ogc" xmlns:ows="http://www.opengis.net/ows" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml"><gml:boundedBy><gml:Null>unknown</gml:Null></gml:boundedBy></wfs:FeatureCollection>

I also can't get a working request with GeoServer's WPS builder

cc @sbalasub

[dwins]

Seems that the clip rectangle and the input features must use the same projection. I'll look into fixing it.