| 1 | #parser_extra.py |
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| 2 | # DL 12 april 2006 |
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| 3 | # 'extra' functions to enable parsing. |
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| 4 | #contains: |
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| 5 | #. Namespace fix |
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| 6 | # Function to resolve references in CSML doc. |
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| 7 | |
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| 8 | import Parser |
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| 9 | import sys |
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| 10 | import pickle |
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| 11 | |
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| 12 | #string manipulation function. may as well go in this file for now. |
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| 13 | def removeInlineNS(csmlstring): |
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| 14 | # removeInlineNS: function removes "inline" namespaces and declares them as part of the Dataset element. |
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| 15 | |
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| 16 | |
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| 17 | #remove all |
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| 18 | csmlstring=csmlstring.replace(' xmlns:csml="http://ndg.nerc.ac.uk/csml"','') |
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| 19 | csmlstring=csmlstring.replace(' xmlns:xlink="http://www.w3.org/1999/xlink"','') |
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| 20 | csmlstring=csmlstring.replace('xmlns:om="http://www.opengis.net/om"','') |
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| 21 | csmlstring=csmlstring.replace('xsi:schemaLocation="http://ndg.nerc.ac.uk/csml/XMLSchemas/CSMLAppSchema.xsd"','') |
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| 22 | csmlstring=csmlstring.replace('xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"','') |
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| 23 | |
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| 24 | |
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| 25 | #remove cmsl: prefixes |
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| 26 | csmlstring=csmlstring.replace('<csml:','<') |
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| 27 | csmlstring=csmlstring.replace('</csml:','</') |
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| 28 | #add namespace declarations at top of document, after gml namespace declaration |
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| 29 | csmlstring=csmlstring.replace('xmlns:gml="http://www.opengis.net/gml">', 'xmlns:gml="http://www.opengis.net/gml" xmlns:om="http://www.opengis.net/om" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://ndg.nerc.ac.uk/csml/XMLSchemas/CSMLAppSchema.xsd">') |
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| 30 | |
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| 31 | return csmlstring |
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| 32 | |
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| 33 | |
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| 34 | class ParserPostProcessor: |
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| 35 | def __init__(self,dataset): |
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| 36 | if isinstance(dataset,Parser.Dataset): |
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| 37 | self.dataset=dataset |
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| 38 | else: |
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| 39 | print 'Error: Could not post-process CSML document' |
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| 40 | sys.exit() |
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| 41 | |
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| 42 | def resolveReferences(self): |
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| 43 | #if there are any phenomenon defintions then |
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| 44 | #for every <parameter> element, need to resolve any hrefs. |
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| 45 | if hasattr(self.dataset, 'phenomenonDefinitions'): |
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| 46 | for feature in self.dataset.featureCollection.members: |
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| 47 | if hasattr(feature, 'parameter'): |
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| 48 | if hasattr(feature.parameter,'href'): |
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| 49 | #search phenomenon definitions for a match. |
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| 50 | for definition in self.dataset.phenomenonDefinitions.definitionMembers: |
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| 51 | if definition.id == feature.parameter.href[1:]: #remove '#' |
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| 52 | #remove href and replace with object |
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| 53 | print dir(definition) |
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| 54 | feature.parameter.href =None |
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| 55 | feature.parameter=definition |
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| 56 | |
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| 57 | #if there are embedded reference system definitions then |
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| 58 | #for every DomainReference and DomainComplement need to resolve any srsNames |
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| 59 | if hasattr(self.dataset, 'referenceSystemDefinitions'): |
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| 60 | for feature in self.dataset.featureCollection.members: |
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| 61 | if hasattr(feature, 'domain'): #Trajectory features don't have domains.. |
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| 62 | if hasattr(feature.domain.domainReference, 'srsName'): |
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| 63 | #search reference definitions for a match. |
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| 64 | for definition in self.dataset.referenceSystemDefinitions.definitionMembers: |
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| 65 | if definition.id == feature.domain.domainReference.srsName[1:]: |
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| 66 | #remove srsName attribute and replace with Object. |
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| 67 | pass #Leave this for now. |
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| 68 | if hasattr(feature.domain, 'domainComplement'): |
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| 69 | if hasattr(feature.domain.domainComplement, 'srsName'): |
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| 70 | #search reference definitions for a match. |
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| 71 | for definition in self.dataset.referenceSystemDefinitions.definitionMembers: |
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| 72 | if definition.id == feature.domain.domainComplement.srsName[1:]: |
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| 73 | #remove srsName attribute and replace with Object. |
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| 74 | pass #Leave this for now. |
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| 75 | |
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| 76 | #NetCDFExtracts etc may be referenced e.g. as <axisvalues> element. Need to fix these too. |
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| 77 | if hasattr(self.dataset, 'arrayDescriptors'): |
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| 78 | for feature in self.dataset.featureCollection.members: |
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| 79 | if hasattr (feature, 'domain'): |
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| 80 | if hasattr(feature.domain, 'domainComplement'): |
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| 81 | if isinstance(feature.domain.domainComplement, Parser.Grid): |
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| 82 | for ordinate in feature.domain.domainComplement.ordinates: |
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| 83 | #search arrayDescriptors for a match. |
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| 84 | for arrayDescriptor in self.dataset.arrayDescriptors: |
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| 85 | print arrayDescriptor.id |
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| 86 | if arrayDescriptor.id == ordinate.axisValues[1:]: #remove '#' |
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| 87 | ordinate.axisValues = arrayDescriptor |
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| 88 | break |
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| 89 | |
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| 90 | |
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| 91 | return self.dataset |
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