Examples of org.apache.lucene.queryparser.flexible.core.processors.QueryNodeProcessorPipeline

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

Examples of org.apache.lucene.queryparser.flexible.core.processors.QueryNodeProcessorPipeline

org.apache.lucene.queryparser.flexible.core.processors.QueryNodeProcessorPipeline
A {@link QueryNodeProcessorPipeline} class should be used to build a querynode processor pipeline. When a query node tree is processed using this class, it passes the query node tree to each processor on the pipeline and the result from each processor is passed to the next one, always following the order the processors were on the pipeline. When a {@link QueryConfigHandler} object is set on a{@link QueryNodeProcessorPipeline}, it also takes care of setting this {@link QueryConfigHandler} on all processor on pipeline.


  @Test(expected=IllegalArgumentException.class)
  public void testTwigQueryNodeWithMoreThan2Children()
  throws Exception {
    final KeywordQueryParser parser = new KeywordQueryParser();
    final QueryNodeProcessorPipeline pipeline = new QueryNodeProcessorPipeline();
    pipeline.add(new QueryNodeProcessorImpl() {
      @Override
      protected List<QueryNode> setChildrenOrder(final List<QueryNode> children)
      throws QueryNodeException {
        return children;
      }

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    QueryConfigHandler spanQueryConfigHandler = new SpansQueryConfigHandler();
    spanQueryConfigHandler.set(SpansQueryConfigHandler.UNIQUE_FIELD, "index");


    // set up the processor pipeline with the ConfigHandler
    // and create the pipeline for this simple demo
    QueryNodeProcessorPipeline spanProcessorPipeline = new QueryNodeProcessorPipeline(
        spanQueryConfigHandler);
    // @see SpansValidatorQueryNodeProcessor
    spanProcessorPipeline.add(new SpansValidatorQueryNodeProcessor());
    // @see UniqueFieldQueryNodeProcessor
    spanProcessorPipeline.add(new UniqueFieldQueryNodeProcessor());


    // print to show out the QueryNode tree before being processed
    if (VERBOSE) System.out.println(queryTree);


    // Process the QueryTree using our new Processors
    queryTree = spanProcessorPipeline.process(queryTree);


    // print to show out the QueryNode tree after being processed
    if (VERBOSE) System.out.println(queryTree);


    // create a instance off the Builder

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  @Override
  public void setUp() throws Exception {
    super.setUp();


    this.spanProcessorPipeline = new QueryNodeProcessorPipeline();
    this.spanQueryConfigHandler = new SpansQueryConfigHandler();
    this.spansQueryTreeBuilder = new SpansQueryTreeBuilder();


    // set up the processor pipeline
    this.spanProcessorPipeline

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