...
Note: the MetadataFilters only work with the /rmeta endpoint. Further, they do not shortcut metadata extraction within Parsers. They only delete the unwanted fields after the parse. This still can save resources in storage and network bandwidth.
A user can map Tika field names to names they prefer. If excludeUnmapped is set to true, only those fields that are included in the mapping are passed back to the client.
| Code Block | ||||
|---|---|---|---|---|
| ||||
<properties>
<metadataFilters>
<metadataFilter class="org.apache.tika.metadata.filter.FieldNameMappingFilter">
<params>
<excludeUnmapped>true</excludeUnmapped>
<mappings>
<mapping from="X-TIKA:content" to="content"/>
<mapping from="a" to="b"/>
</mappings>
</params>
</metadataFilter>
</metadataFilters>
</properties> |
A user can set the following in a tika-config.xml file to have the /rmeta end point only return three fields:
| Code Block | ||||
|---|---|---|---|---|
| ||||
<properties>
<metadataFilters>
<metadataFilter class="org.apache.tika.metadata.filter.IncludeFieldMetadataFilter">
<params>
<param name="include" type="list"><include>
<string>X<field>X-TIKA:content</string>include>
<string>extended<field>extended-properties:Application</string>include>
<string>Content<field>Content-Type</string>include>
</param>
</params>
</metadataFilter>
</metadataFilters>
</properties> |
...
| No Format |
|---|
<properties>
<metadataFilters>
<metadataFilter class="org.apache.tika.metadata.filter.ExcludeFieldMetadataFilter">
<params>
<param name="exclude" type="list"><exclude>
<string>X<field>X-TIKA:content</string>field>
<string>extended<field>extended-properties:Application</string>field>
<string>Content<field>Content-Type</string>field>
</param>
</params>
</metadataFilter>
</metadataFilters>
</properties> |
...
| No Format |
|---|
<properties>
<metadataFilters>
<metadataFilter class="org.apache.tika.metadata.filter.ClearByMimeMetadataFilter">
<params>
<param name="mimes" type="list"><mimes>
<string>image<mime>image/emf</string>mime>
</param>mimes>
</params>
</metadataFilter>
</metadataFilters>
</properties> |
...