Logical combination of filters

[FuePi]

We need to filter documents without the header Content-Length and with the header Transfer-Encoding set to chunked. This is the importer configuration I came up with:

<importer>
    <preParseHandlers>
        <!--    Exclude pages with header Transfer-Encoding: chunked 
            and header Content-Length missing from being saved to the cache -->
        <filter class="com.norconex.importer.handler.filter.impl.RegexMetadataFilter"
            onMatch="exclude" field="transfer-encoding">
          .*chunked$
        </filter>
        <filter class="com.norconex.importer.handler.filter.impl.EmptyMetadataFilter"
              onMatch="exclude" fields="content-length" />
    </preParseHandlers>
</importer>

But this seems to exclude documents matching either one of the filters. Is there a way to logically combine these filters?

[essiembre]

Good question. Not sure you can do it the way you have it, but here is a workaround I suggest you try (untested):

<filter class="com.norconex.importer.handler.filter.impl.EmptyMetadataFilter"
        onMatch="exclude" fields="content-length">
    <restrictTo field="transfer-encoding">.*chunked$</restrictTo>
</filter>

The restrictTo makes sure EmptyMetadataFilter is only applicable to documents with "chunked" transfer encoding.

For more control, you can also have a look at the ScriptFilter.

Does that work for you?

[FuePi]

That works perfectly! Thank you very much for the fast response.