On Sun, Dec 14, 2008 at 8:43 PM, Erik Hatcher <e...@ehatchersolutions.com> wrote: > On Dec 14, 2008, at 6:15 AM, Noble Paul നോബിള് नोब्ळ् wrote: >> >> one xpath can be mapped to only one name. > > That's a bizarre restriction. A shame.
hmmm.... Understandale . XPathRecordReader is a custom minimal implementation for streaming XPath. My aim was to implement something which handles XPath fast and that does the job. XPathEntityprocessor relies on that. XPathRecordReader is far from feature complete. > >> If you want to copy one to another use something like a >> TemplateTransformer > > Thanks!, I got it to work like this: > > <entity name="blog" pk="id" url="http://server/rss/"; > processor="XPathEntityProcessor" forEach="/rss/channel/item" > transformer="TemplateTransformer"> > <field column="id" xpath="/rss/channel/item/link"/> > <field column="url" template="${blog.id}"/> > <field column="title" xpath="/rss/channel/item/title"/> > <field column="description" > xpath="/rss/channel/item/description"/> > <!-- No pubDate either <field column="date" > xpath="/rss/channel/item/pubDate" dateTimeFormat="EEE, d MMM yyyy HH:mm:ss > Z"/> --> > </entity> > > A couple of questions... how would I add a static valued field in? > Something like: > > <field column="source" value="blog"/> use TemplateTransformer again <field column="source" template="blog"/> > > where all documents from this entity come in with a source="blog" literally. > > Also, I want to add in date transformation like in the example above > commented out. How would I use both the TemplateTransformer and the > DateFormatTransformer, Transformers are chained. transformer="a,b,c" (comma separated) first a is applied then b and then c. >since I'm specifying the transformer on the entity > rather than the field it is used on? I don't yet understand why the > transformer is entity-based rather than per-field. A row is emitted by an entity and a field is one of the values in that row. A field declaration is optional because it can be implicit if it is present in the schema. (But , for XPathEntityProcessor it is not ) ..Moreover there is no component in DIH which corresponds to a Field where this can be attached Hence , the transformers are declared on an entity > > Thanks for your help, Noble. > > Erik > > >> >> >> >> >> >> >> On Sun, Dec 14, 2008 at 7:18 AM, Erik Hatcher >> <e...@ehatchersolutions.com> wrote: >>> >>> I'm trying to index a blog with DIH, and have this: >>> >>> <field column="id" xpath="/rss/channel/item/link"/> >>> <field column="url" xpath="/rss/channel/item/link"/> >>> >>> If I comment out the url <field> line it all works fine, but if I put it >>> in, >>> no documents get indexed. Is there an issue with using the same xpath >>> twice? Or something else I'm missing? >>> >>> This is using Solr trunk. >>> >>> Thanks, >>> Erik >>> >>> >> >> >> >> -- >> --Noble Paul > > -- --Noble Paul
