| 1 | # python class to support methods on a DIF ... to conform with |
|---|
| 2 | # renderEntity etc ... |
|---|
| 3 | # |
|---|
| 4 | import ElementTree as ET |
|---|
| 5 | from Utilities import * |
|---|
| 6 | from geoUtilities import * |
|---|
| 7 | from People import * |
|---|
| 8 | from ServiceBinding import Service |
|---|
| 9 | from renderEntity import renderEntity |
|---|
| 10 | |
|---|
| 11 | class DIF: |
|---|
| 12 | ''' Supports the NASA GCMD DIF format for python operations, |
|---|
| 13 | note ... not a complete implementation, currently minimum to |
|---|
| 14 | show a reasonable piece of content ''' |
|---|
| 15 | def __init__(self,xml,renderMethod=renderEntity): |
|---|
| 16 | '''Initialise a python dif instance based on an xml document ''' |
|---|
| 17 | self.metadataType='DIF' |
|---|
| 18 | self.xml=xml |
|---|
| 19 | self.elem=ET.fromstring(xml) |
|---|
| 20 | self.renderMethod=renderMethod |
|---|
| 21 | self.type='DIF' |
|---|
| 22 | |
|---|
| 23 | self.abstract=wrapGetText(self.elem,'Summary') |
|---|
| 24 | self.name=wrapGetText(self.elem,'Entry_Title') |
|---|
| 25 | |
|---|
| 26 | #Note that entity.constraints.html is about access control on the metadata, |
|---|
| 27 | #and so we don't populate this here ... |
|---|
| 28 | |
|---|
| 29 | #need entity.parameters, entity.bbox, entity.timeCoverage, entity.curator, entity.creators ... |
|---|
| 30 | |
|---|
| 31 | #load up all the information about parameters |
|---|
| 32 | self.categories=[] |
|---|
| 33 | self.topics=[] |
|---|
| 34 | self.terms=[] |
|---|
| 35 | self.variables=[] |
|---|
| 36 | self.parameters=[] |
|---|
| 37 | match={'Category':self.categories,'Topic':self.topics,'Term':self.terms, |
|---|
| 38 | 'Variable':self.variables,'Detailed_Variable':self.parameters} |
|---|
| 39 | for level in ['Category','Topic','Term','Variable','Detailed_Variable']: |
|---|
| 40 | for item in self.elem.findall('Parameters/'+level): |
|---|
| 41 | value=item.text |
|---|
| 42 | if value not in match[level]: match[level].append(value) |
|---|
| 43 | print self.parameters |
|---|
| 44 | |
|---|
| 45 | #load up information about spatial bounding box |
|---|
| 46 | self.bbox=Bounding(self.elem,entity='DIF') |
|---|
| 47 | |
|---|
| 48 | #load up information about temporal extent |
|---|
| 49 | self.timeCoverage=( |
|---|
| 50 | wrapGetText(self.elem,'Temporal_Coverage/Start_Date'), |
|---|
| 51 | wrapGetText(self.elem,'Temporal_Coverage/Stop_Date'), |
|---|
| 52 | wrapGetText(self.elem,'Data_Set_Progress') ) |
|---|
| 53 | |
|---|
| 54 | #Data curator information |
|---|
| 55 | self.centre=DIFcontact(self.elem.find('Data_Center'),ctype='centre') |
|---|
| 56 | self.curator=DIFcontact(self.elem) |
|---|
| 57 | |
|---|
| 58 | #Data Creators |
|---|
| 59 | self.creators=[] |
|---|
| 60 | |
|---|
| 61 | #should create a class for the service links (i.e. similar to data granules for stubB) |
|---|
| 62 | #that would include any security info ... |
|---|
| 63 | |
|---|
| 64 | self.services=[] |
|---|
| 65 | for item in self.elem.find('Related_URL'): |
|---|
| 66 | s=Service() |
|---|
| 67 | s.name=item.find('URL_Content_Type') |
|---|
| 68 | s.description=item.find('Description') |
|---|
| 69 | s.url=item.find('URL') |
|---|
| 70 | self.services.append(s) |
|---|
| 71 | |
|---|
| 72 | def toHTML(self): |
|---|
| 73 | ''' Use the render method (optionally passed at initialisation, or the |
|---|
| 74 | default - renderEntity - to get an HTML version of the DIF ''' |
|---|
| 75 | return self.renderMethod(self) |
|---|
| 76 | |
|---|
| 77 | |
|---|
| 78 | if __name__=="__main__": |
|---|
| 79 | |
|---|
| 80 | f=file('../../exampleD/spade.xml') |
|---|
| 81 | g=file('../../exampleD/ucar.xml') |
|---|
| 82 | dif1xml=f.read() |
|---|
| 83 | dif2xml=g.read() |
|---|
| 84 | D=DIF(cleanup(dif1xml)) |
|---|
| 85 | G=DIF(cleanup(dif2xml)) |
|---|
| 86 | y='''<?xml version="1.0" encoding="UTF-8"?> |
|---|
| 87 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> |
|---|
| 88 | <html xmlsns="http://www.w3.org/1999/xhtml" xml:lang="en"> |
|---|
| 89 | <head> |
|---|
| 90 | <META http-equiv="Content-Type" content="text/xhtml; charset=iso-8859-1"/> |
|---|
| 91 | <title>%s</title> |
|---|
| 92 | <LINK media="all, screen" href="../layout/style.css" type="text/css" rel="stylesheet"/> |
|---|
| 93 | </head> '''%D.name+D.toHTML()+G.toHTML() |
|---|
| 94 | f.close() |
|---|
| 95 | f=file('output.html','wb') |
|---|
| 96 | f.write(y) |
|---|
| 97 | |
|---|
| 98 | |
|---|
| 99 | |
|---|
| 100 | |
|---|
| 101 | |
|---|
| 102 | |
|---|
| 103 | |
|---|
