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Posted to java-user@lucene.apache.org by Paul Taylor <pa...@fastmail.fm> on 2011/05/03 18:03:09 UTC

Why has PerFieldAnalyzerWrapper been made final in Lucene 3.1 ?

We subclassed  PerFieldAnalyzerWrapper as follows:

public class PerFieldEntityAnalyzer extends PerFieldAnalyzerWrapper {

     public PerFieldEntityAnalyzer(Class indexFieldClass) {
         super(new StandardUnaccentAnalyzer());

         for(Object o : EnumSet.allOf(indexFieldClass)) {
             IndexField indexField = (IndexField) o;
             Analyzer analyzer = indexField.getAnalyzer();
             if (analyzer != null) {
                 this.addAnalyzer(indexField.getName(), analyzer);
             }
         }
     }
}

but now we cant do this.

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Re: Why has PerFieldAnalyzerWrapper been made final in Lucene 3.1 ?

Posted by Israel Tsadok <it...@gmail.com>.
On Tue, May 3, 2011 at 7:03 PM, Paul Taylor <pa...@fastmail.fm> wrote:

> We subclassed  PerFieldAnalyzerWrapper as follows:
>
> public class PerFieldEntityAnalyzer extends PerFieldAnalyzerWrapper {
>
>    public PerFieldEntityAnalyzer(Class indexFieldClass) {
>        super(new StandardUnaccentAnalyzer());
>
>        for(Object o : EnumSet.allOf(indexFieldClass)) {
>            IndexField indexField = (IndexField) o;
>            Analyzer analyzer = indexField.getAnalyzer();
>            if (analyzer != null) {
>                this.addAnalyzer(indexField.getName(), analyzer);
>            }
>        }
>    }
> }
>
> but now we cant do this.
>
> How about:

public static Analyzer createPerFieldEntityAnalyzer(Class indexFieldClass) {
    PerFieldAnalyzerWrapper wrapper = new PerFieldAnalyzerWrapper(new
StandardUnaccentAnalyzer());

    for(Object o : EnumSet.allOf(indexFieldClass)) {
        IndexField indexField = (IndexField) o;
        Analyzer analyzer = indexField.getAnalyzer();
        if (analyzer != null) {
            wrapper.addAnalyzer(indexField.getName(), analyzer);
        }
    }

    return wrapper;
}

I'm pretty sure that's how you're supposed to use it anyway.