[pylucene-dev] Document.getFields() doesn't return objects of type Field

[TJ Ninneman]

Wow, I really apologize for posting here before reading through the  
docs....it was there, plain as day.

Thanks again,

TJ


On May 21, 2008, at 4:45 PM, Andi Vajda wrote:

>
> On Wed, 21 May 2008, TJ Ninneman wrote:
>
>> For some reason it seems the Document.getFields() method returns a  
>> List of fields that are not of the type Field.  As you'll see  
>> below, they don't have the same type or attributes:
>>
>>>>> doc = lucene.Document()
>>>>> field = lucene.Field("myfield", lucene.StringReader("mystring"))
>>
>>>>> field
>> <Field: indexed,tokenized<myfield:java.io.StringReader at d59d3c>>
>>>>> field.name()
>> u'myfield'
>>
>>>>> doc.add(field)
>>>>> fields = doc.getFields()
>>
>>>>> fields.get(0)
>> <Object: indexed,tokenized<myfield:java.io.StringReader at d59d3c>>
>
> Java declares a List to contain instances of Object. Until Lucene  
> makes use of Java 1.5 feature, such as generics, and declares this  
> list a List<Field>, there is nothing JCC can do, automatically, to  
> determine what the intended wrapper class should be.
>
> For this, there is a cast_() Class method defined on all classes  
> exported by JCC to cast anything permitted to an instance of the  
> class it is called from. See line 119 of [1]. See sample code for  
> many examples of use.
>
> Andi..
>
> [1] http://svn.osafoundation.org/pylucene/trunk/jcc/README
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