kml.R

In sckott/XMLSchema: R facilities to read XML schema

library(XMLSchema)
#sch = readSchema("~/GitWorkingArea/XMLSchema/inst/samples/kml21.xsd")
sch = readSchema("~/GitWorkingArea/XMLSchema/inst/samples/ogckml22.xsd")
invisible(defineClasses(sch))


library(XML)
getClass("angle180")

a = newXMLNode("angle180", 45)
as(a, "angle180")

v = fromXML(a, type = "angle180")

v = fromXML(a, type = sch[[1]]$angle180)

sch[[1]]$angle180@toConverter(v)
# Fixed (up)
# used to return a string, not a number. Now fails with infinite recursion.
#  Appears the method for XMLAbstractNode, RestrictedDouble is not being used.
# Works now if we add the root = "missing".


#XMLSchema:::defClass(sch[[1]][[5]])
a = newXMLNode("altitudeModeEnum", "clampToGround")
v = as(a, "altitudeModeEnum")

 # use a wrong value
b = newXMLNode("altitudeModeEnum", "clampToGroundXXX")
try(as(b, "altitudeModeEnum")) # fails

sch[[1]][[5]]@toConverter(v)


v = new("color", "ff00ffaa")
try(new("color", "ff00ffaax"))
sch[[1]]$color@toConverter(v)


sch[[1]][["CoordinatesType"]]@fromConverter
#XMLSchema:::defClass(sch[[1]][["CoordinatesType"]])
 # check validity
getValidity(getClass("CoordinatesType"))
new("CoordinatesType", c("abc", "def"))

ct = newXMLNode("CoordinatesType", newXMLNode("string", "foo"), newXMLNode("string", "bar"))
as(ct, "CoordinatesType")


########
#XMLSchema:::defClass(sch[[1]]$itemIconStateType, types = sch)
as(newXMLNode("itemIconStateEnum", "open"), "itemIconStateEnum")
new("itemIconStateEnum", "open")
try(new("itemIconStateEnum", "openx"))

nd = newXMLNode("itemIconStateType",
                 newXMLNode("string", "open"),
                 newXMLNode("string", "closed"))

as(nd, "itemIconStateType")



nd = newXMLNode("itemIconStateType",
                 newXMLNode("string", "openx"),
                 newXMLNode("string", "closed"))
try(as(nd, "itemIconStateType"))


###############

createSOAPConverter(sch[[1]]$ObjectType, , sch)
createSOAPConverter(sch[[1]]$LatLonBoxType, , sch)


####################

#XMLSchema:::defClass(sch[[1]]$SnippetType, types = sch)
f = createSOAPConverter(sch[[1]]$SnippetType)

nn = newXMLNode("Snippet", attrs = c(maxLines = 3),
                 "This is some text as part of a snippet. Note the attribute value")
f(nn)
as(nn, "SnippetType")



##############
kdoc = xmlParse("inst/samples/KML_sample_21.kml")
ov = getNodeSet(kdoc, "//x:GroundOverlay", "x")

as(ov[[1]], "GroundOverlay")
#XMLSchema:::defineElementClasses(sch)

fromXML(ov[[1]], type = "http://earth.google.com/kml/2.1")
fromXML(ov[[1]], type = `http://earth.google.com/kml/2.1`)