install rpath module
pip install https://github.com/brianmckenna/rpath/archive/master.zip
NOTE: the package is currently called xpath despite the repo name, will handle this shortly so import rpath works, for now, must import xpath
import xpath
exprs = [
"/foobar('Deployment')/child::asset_attrs[child::s_name='foo']", # fails
"/child::resource('Deployment')/child::asset_attrs[child::s_name='foo']",
"/resource('Deployment')/asset_attrs[s_name='foo']",
"/child::resource()[child::name='myMooring']/target::association('hasDevice')", # note 'target' instead of object (object is reserved word in Python)
"/resource()[name='myMooring']/target::association('hasDevice')",
"self::resource()[child::name='CTD_Simulator']/child::asset_attrs/child::s_name/child::value[fn:position=1]",
"/CTD_Simulator/asset_attrs/s_name/value[1]", # caution, what is intended with /CTD_Simulator/ I think in ION "name=" is synonymous with child node
"/name='CTD_Simulator'/asset_attrs/s_name/value[fn:position=1]",
"self::node()/child::resource/child::asset_attrs/child::s_name/child::value[fn:position=1]",
"resource/asset_attrs/s_name/value[1]",
"/subject::resource('Deployment')/asset_attrs[s_name='foo']",
]
for expr in exprs:
xpath.validate(expr)