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""" |
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2
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Module that contains all the resolvers. |
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A resolver is a class that is able to retrieve a dependency to inject. |
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""" |
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1 |
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from pyjection.reference import Reference |
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1 |
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class BaseResolver(object): |
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""" |
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Base class for the resolvers |
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""" |
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1 |
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def __init__(self, injector): |
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1 |
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self._injector = injector |
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1 |
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def resolve(self, method_parameter, service): |
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pass |
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1 |
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class ServiceResolver(BaseResolver): |
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""" |
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Try to resolve the dependency based on |
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the service that has been provided to the injector. |
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""" |
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1 |
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def resolve(self, method_parameter, service): |
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1 |
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if method_parameter.name not in service.arguments: |
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return None |
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value = service.arguments[method_parameter.name] |
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1 |
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if not isinstance(value, Reference): |
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return value |
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# The value references an other dependency service |
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1 |
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if value.return_class: |
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return self._injector.get_uninstantiated(value.name) |
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1 |
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return self._injector.get(value.name) |
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40
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1 |
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class NameResolver(BaseResolver): |
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""" |
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Try to resolve the dependency based on the parameter name. |
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If the latter is declared in the dependency injector then we retrieve it |
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as the instance to inject. |
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""" |
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48
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1 |
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def resolve(self, method_parameter, service): |
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49
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1 |
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if self._injector.has_service(method_parameter.name): |
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50
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return self._injector.get(method_parameter.name) |
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Darkheir /
pyjection
