Builder used to construct an object for types defined in the schema
| 27 | |
| 28 | |
| 29 | class Builder: |
| 30 | """ Builder used to construct an object for types defined in the schema """ |
| 31 | |
| 32 | def __init__(self, resolver): |
| 33 | """ |
| 34 | @param resolver: A schema object name resolver. |
| 35 | @type resolver: L{resolver.Resolver} |
| 36 | """ |
| 37 | self.resolver = resolver |
| 38 | |
| 39 | def build(self, name): |
| 40 | "build an object for the specified typename as defined in the schema" |
| 41 | if isinstance(name, basestring): |
| 42 | type = self.resolver.find(name) |
| 43 | if type is None: |
| 44 | raise TypeNotFound(name) |
| 45 | else: |
| 46 | type = name |
| 47 | cls = type.name |
| 48 | if type.mixed(): |
| 49 | data = Factory.property(cls) |
| 50 | else: |
| 51 | data = Factory.object(cls) |
| 52 | resolved = type.resolve() |
| 53 | md = data.__metadata__ |
| 54 | md.sxtype = resolved |
| 55 | md.ordering = self.ordering(resolved) |
| 56 | history = [] |
| 57 | self.add_attributes(data, resolved) |
| 58 | for child, ancestry in type.children(): |
| 59 | if self.skip_child(child, ancestry): |
| 60 | continue |
| 61 | self.process(data, child, history[:]) |
| 62 | return data |
| 63 | |
| 64 | def process(self, data, type, history): |
| 65 | """ process the specified type then process its children """ |
| 66 | if type in history: |
| 67 | return |
| 68 | if type.enum(): |
| 69 | return |
| 70 | history.append(type) |
| 71 | resolved = type.resolve() |
| 72 | value = None |
| 73 | if type.unbounded(): |
| 74 | value = [] |
| 75 | else: |
| 76 | if len(resolved) > 0: |
| 77 | if resolved.mixed(): |
| 78 | value = Factory.property(resolved.name) |
| 79 | md = value.__metadata__ |
| 80 | md.sxtype = resolved |
| 81 | else: |
| 82 | value = Factory.object(resolved.name) |
| 83 | md = value.__metadata__ |
| 84 | md.sxtype = resolved |
| 85 | md.ordering = self.ordering(resolved) |
| 86 | setattr(data, type.name, value) |