Class SimpleBoolFunction


  • public abstract class SimpleBoolFunction
    extends BoolFunction
    BoolFunction implementation which applies an extendible boolean function to the values of a single wrapped ValueSource. Functions this can be used for include whether a field has a value or not, or inverting the boolean value of the wrapped ValueSource.
    • Constructor Detail

      • SimpleBoolFunction

        public SimpleBoolFunction​(ValueSource source)
    • Method Detail

      • name

        protected abstract java.lang.String name()
      • func

        protected abstract boolean func​(int doc,
                                        FunctionValues vals)
                                 throws java.io.IOException
        Throws:
        java.io.IOException
      • getValues

        public BoolDocValues getValues​(java.util.Map context,
                                       LeafReaderContext readerContext)
                                throws java.io.IOException
        Description copied from class: ValueSource
        Gets the values for this reader and the context that was previously passed to createWeight(). The values must be consumed in a forward docID manner, and you must call this method again to iterate through the values again.
        Specified by:
        getValues in class ValueSource
        Throws:
        java.io.IOException
      • description

        public java.lang.String description()
        Description copied from class: ValueSource
        description of field, used in explain()
        Specified by:
        description in class ValueSource
      • equals

        public boolean equals​(java.lang.Object o)
        Specified by:
        equals in class ValueSource
      • createWeight

        public void createWeight​(java.util.Map context,
                                 IndexSearcher searcher)
                          throws java.io.IOException
        Description copied from class: ValueSource
        Implementations should propagate createWeight to sub-ValueSources which can optionally store weight info in the context. The context object will be passed to getValues() where this info can be retrieved.
        Overrides:
        createWeight in class ValueSource
        Throws:
        java.io.IOException