How do you map a query for fieldx to fieldy

[Paul Taylor <pa...@fastmail.fm>]

For backwards compatabiity I have to change queries for the track field 
to the recording field. I did this by overriding  QueryParser.newQuery() 
as follows

protected Query newTermQuery(Term term) {
        if ( term.field() == "track" ) {
            return super.newTermQuery(new Term("recording"term.text()));
        }
        else {
            return super.newTermQuery(term);
        }
    }

this seemed to work, but then I realised it didnt work for phrasequeries 
so I have to override QueryParser.newPhraseQuery() but now thinking will 
fail for wilcard queries ectera. Is there just one method I can override 
to deal with this.


Paul

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Re: How do you map a query for fieldx to fieldy

[Paul Taylor <pa...@fastmail.fm>]

Paul Taylor wrote:
> For backwards compatabiity I have to change queries for the track 
> field to the recording field. I did this by overriding  
> QueryParser.newQuery() as follows
>
> protected Query newTermQuery(Term term) {
>        if ( term.field() == "track" ) {
>            return super.newTermQuery(new Term("recording"term.text()));
>        }
>        else {
>            return super.newTermQuery(term);
>        }
>    }
>
> this seemed to work, but then I realised it didnt work for 
> phrasequeries so I have to override QueryParser.newPhraseQuery() but 
> now thinking will fail for wilcard queries ectera. Is there just one 
> method I can override to deal with this.

FYI, did this instead and seems to work

protected Query getFieldQuery(String field, String queryText)  throws 
ParseException {
        if( field.equals("track") {
            field=RecordingIndexField.RECORDING.getName();
        }
        return super.getFieldQuery(field,queryText);
}

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