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Subject: Re: How to detect text sofa?
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From: Richard Eckart de Castilho <eckartde@tk.informatik.tu-darmstadt.de>
In-Reply-To: <4D99A309.5080304@gmail.com>
Date: Mon, 4 Apr 2011 14:17:25 +0200
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 <EC2AECC9-BF2B-488C-8783-C5C6B4A7287D@tk.informatik.tu-darmstadt.de>
References: <4D99A309.5080304@gmail.com>
To: "user@uima.apache.org" <user@uima.apache.org>

Hi J=F6rn,

> what is the suggested way to detect a text sofa?
>=20
> As far as I know the suggested way of doing it is via the mime type, =
right?
>=20
> Which options remain when the mime type is not set? Is =
CAS.getDocumentText !=3D null appropriate ?

in my opinion, a non-text SofA has getDocumentText() =3D=3D null - it =
would acquire the data as a stream instead.
A text SofA might contain markup, which can be reflected by the mime =
type.

If data is acquired using a stream, the mime-type should probably be =
considered to decide if the content can be rendered as text. However, =
the mapping between begin and end offsets to the actual character =
offsets might not be discernable only from the mime-type.
For example if the stream returns HTML, but the offsets refer to a =
plain-text only "view".

Cheers,

Richard

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Richard Eckart de Castilho
Technical Lead
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