Package com.norconex.importer.handler.condition.impl

Class BlankCondition

  • All Implemented Interfaces:
    IXMLConfigurable, IImporterCondition
    public class BlankCondition
extends Object
implements IImporterCondition, IXMLConfigurable

    A condition based on whether the document content (default) or any of the specified metadata fields are blank or inexistent. For metadata fields, control characters (char <= 32) are removed before evaluating whether their values are empty. Dealing with the document content will rather check if it is null or empty (no bytes returned when read).

    Multiple fields and values:

    By default, ALL values for all fields matched by your field matcher expression must be blank for this condition to be true. You can change the logic to have ANY values to be blank for the condition to be true with setMatchAnyBlank(boolean).

    If no fields are matched, the conditions is also considered empty (true).

    XML configuration usage:

    
<condition
    class="com.norconex.importer.handler.condition.impl.BlankCondition"
    matchAnyBlank="[false|true]">
  <fieldMatcher>
    (Optional expression matching fields we want to test if blank,
     instead of using the document content.)
  </fieldMatcher>
</handler>

    XML usage example:

    
<condition
    class="BlankCondition">
  <fieldMatcher
      method="regex">
    (title|dc:title)
  </fieldMatcher>
</condition>

    The above example condition will return true if both "title" or "dc:title" are blank.

    Since:
    3.0.0
    Author:
    Pascal Essiembre