Package org.apache.lucene.queryparser.flexible.core.config

Class QueryConfigHandler

java.lang.Object
org.apache.lucene.queryparser.flexible.core.config.AbstractQueryConfig
org.apache.lucene.queryparser.flexible.core.config.QueryConfigHandler
Direct Known Subclasses:
StandardQueryConfigHandler
public abstract class QueryConfigHandler extends AbstractQueryConfig
This class can be used to hold any query configuration and no field configuration. For field configuration, it creates an empty FieldConfig object and delegate it to field config listeners, these are responsible for setting up all the field configuration.

QueryConfigHandler should be extended by classes that intend to provide configuration to QueryNodeProcessor objects.

The class that extends QueryConfigHandler should also provide FieldConfig objects for each collection field.

See Also:

  • Constructor Details

    • QueryConfigHandler

      public QueryConfigHandler()

  • Method Details

    • getFieldConfig

      public FieldConfig getFieldConfig(String fieldName)
      Returns an implementation of FieldConfig for a specific field name. If the implemented QueryConfigHandler does not know a specific field name, it may return null , indicating there is no configuration for that field.
      Parameters:
      fieldName - the field name
      Returns:
      a FieldConfig object containing the field name configuration or null , if the implemented QueryConfigHandler has no configuration for that field

    • addFieldConfigListener

      public void addFieldConfigListener(FieldConfigListener listener)
      Adds a listener. The added listeners are called in the order they are added.
      Parameters:
      listener - the listener to be added