| 1 | # python class to support methods on a DIF ... to conform with |
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| 2 | # renderEntity etc ... |
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| 3 | # |
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| 4 | import ElementTree as ET |
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| 5 | from Utilities import * |
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| 6 | from geoUtilities import * |
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| 7 | from People import * |
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| 8 | from ServiceBinding import Service |
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| 9 | from renderEntity import renderEntity |
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| 10 | |
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| 11 | class DIF: |
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| 12 | ''' Supports the NASA GCMD DIF format for python operations, |
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| 13 | note ... not a complete implementation, currently minimum to |
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| 14 | show a reasonable piece of content ''' |
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| 15 | def __init__(self,xml,renderMethod=renderEntity): |
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| 16 | '''Initialise a python dif instance based on an xml document ''' |
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| 17 | self.metadataType='DIF' |
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| 18 | self.elem=ET.fromstring(xml) |
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| 19 | self.renderMethod=renderMethod |
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| 20 | self.type='DIF' |
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| 21 | |
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| 22 | self.abstract=wrapGetText(self.elem,'Summary') |
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| 23 | self.name=wrapGetText(self.elem,'Entry_Title') |
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| 24 | |
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| 25 | #Note that entity.constraints.html is about access control on the metadata, |
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| 26 | #and so we don't populate this here ... |
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| 27 | |
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| 28 | #need entity.parameters, entity.bbox, entity.timeCoverage, entity.curator, entity.creators ... |
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| 29 | |
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| 30 | #load up all the information about parameters |
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| 31 | self.categories=[] |
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| 32 | self.topics=[] |
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| 33 | self.terms=[] |
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| 34 | self.variables=[] |
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| 35 | self.parameters=[] |
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| 36 | match={'Category':self.categories,'Topic':self.topics,'Term':self.terms, |
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| 37 | 'Variable':self.variables,'Detailed_Variable':self.parameters} |
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| 38 | for level in ['Category','Topic','Term','Variable','Detailed_Variable']: |
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| 39 | for item in self.elem.findall('Parameters/'+level): |
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| 40 | value=item.text |
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| 41 | if value not in match[level]: match[level].append(value) |
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| 42 | print self.parameters |
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| 43 | |
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| 44 | #load up information about spatial bounding box |
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| 45 | self.bbox=Bounding(self.elem,entity='DIF') |
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| 46 | |
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| 47 | #load up information about temporal extent |
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| 48 | self.timeCoverage='Start Date:%s Stop Date:%s (%s)'%( |
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| 49 | wrapGetText(self.elem,'Temporal_Coverage/Start_Date'), |
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| 50 | wrapGetText(self.elem,'Temporal_Coverage/Stop_Date'), |
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| 51 | wrapGetText(self.elem,'Data_Set_Progress') ) |
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| 52 | |
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| 53 | #Data curator information |
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| 54 | self.centre=DIFcontact(self.elem.find('Data_Center'),ctype='centre') |
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| 55 | self.curator=DIFcontact(self.elem) |
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| 56 | |
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| 57 | #Data Creators |
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| 58 | self.creators=[] |
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| 59 | |
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| 60 | #should create a class for the service links (i.e. similar to data granules for stubB) |
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| 61 | #that would include any security info ... |
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| 62 | |
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| 63 | self.services=[] |
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| 64 | for item in self.elem.find('Related_URL'): |
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| 65 | s=Service() |
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| 66 | s.name=item.find('URL_Content_Type') |
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| 67 | s.description=item.find('Description') |
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| 68 | s.url=item.find('URL') |
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| 69 | self.services.append(s) |
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| 70 | |
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| 71 | def toHTML(self): |
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| 72 | ''' Use the render method (optionally passed at initialisation, or the |
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| 73 | default - renderEntity - to get an HTML version of the DIF ''' |
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| 74 | return self.renderMethod(self) |
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| 75 | |
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| 76 | |
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| 77 | if __name__=="__main__": |
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| 78 | |
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| 79 | f=file('../../exampleD/spade.xml') |
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| 80 | difxml=f.read() |
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| 81 | D=DIF(cleanup(difxml)) |
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| 82 | y='''<?xml version="1.0" encoding="UTF-8"?> |
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| 83 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> |
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| 84 | <html xmlsns="http://www.w3.org/1999/xhtml" xml:lang="en"> |
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| 85 | <head> |
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| 86 | <META http-equiv="Content-Type" content="text/xhtml; charset=iso-8859-1"/> |
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| 87 | <title>%s</title> |
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| 88 | <LINK media="all, screen" href="../layout/style.css" type="text/css" rel="stylesheet"/> |
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| 89 | </head> '''%D.name+D.toHTML() |
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| 90 | f.close() |
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| 91 | f=file('output.html','wb') |
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| 92 | f.write(y) |
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| 93 | |
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| 94 | |
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| 95 | |
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| 96 | |
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| 99 | |
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