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## org.modeshape.jcr.query.lucene.basic
Class BasicTupleCollector

    java.lang.Object
      org.apache.lucene.search.Collector
          org.modeshape.jcr.query.lucene.LuceneQueryEngine.TupleCollector
              org.modeshape.jcr.query.lucene.basic.BasicTupleCollector

    @NotThreadSafe
    public class BasicTupleCollector

extends LuceneQueryEngine.TupleCollector

The `BasicLuceneSchema` does not store any fields in the indexes, with the exception of the document identifier in which we're storing the key of the node that the document represents. Thus, in order to provide for each document the column values for each tuple, this collector looks up the `CachedNode` for each tuple using the `QueryContext`'s `RepositoryCache` and then finds the property value for each required column.

In all cases, only the persisted workspace content appears in the indexes, so every Lucene `Query` only operates against this persisted content. However, the query results might reflect either only the persisted workspace content or the session's view of the content (which includes both its transient state as well as the persisted workspace content), depending upon whether the QueryContext's NodeCache is actually a `WorkspaceCache` or a `SessionCache`.

This class's constructor prepares the information that's ncessary to access the tuple values as fast as possible.

Nested Class Summary
`protected static class` | `BasicTupleCollector.LocalNameColumnAssignment`
`protected static class` | `BasicTupleCollector.NameColumnAssignment`
`protected static class` | `BasicTupleCollector.NodeDepthColumnAssignment`
`protected static class` | `BasicTupleCollector.PathColumnAssignment`
`protected static class` | `BasicTupleCollector.PseudoColumnAssignment`
`protected static class` | `BasicTupleCollector.ScoreColumnAssignment`

Constructor Summary
`BasicTupleCollector(QueryContext queryContext, QueryResults.Columns columns)`

Method Summary
`boolean` | `acceptsDocsOutOfOrder()`
`float` | `doCollect(int doc)`
`List<Object[]>` | `getTuples()` Get the tuples.
`void` | `setNextReader(org.apache.lucene.index.IndexReader reader, int docBase)`
`void` | `setScorer(org.apache.lucene.search.Scorer scorer)`

Methods inherited from class org.modeshape.jcr.query.lucene.LuceneQueryEngine.TupleCollector
`collect`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### BasicTupleCollector

    public BasicTupleCollector(QueryContext queryContext,
                               QueryResults.Columns columns)

Method Detail

### setScorer

    public void setScorer(org.apache.lucene.search.Scorer scorer)

  Specified by:
    `setScorer` in class `org.apache.lucene.search.Collector`

### setNextReader

    public void setNextReader(org.apache.lucene.index.IndexReader reader,
                              int docBase)

  Specified by:
    `setNextReader` in class `org.apache.lucene.search.Collector`

### acceptsDocsOutOfOrder

    public boolean acceptsDocsOutOfOrder()

  Specified by:
    `acceptsDocsOutOfOrder` in class `org.apache.lucene.search.Collector`

### doCollect

    public float doCollect(int doc)
                    throws IOException

  Specified by:
    `doCollect` in class `LuceneQueryEngine.TupleCollector`
  Throws:
    `IOException`

### getTuples

    public List<Object[]> getTuples()

  Description copied from class: `LuceneQueryEngine.TupleCollector`
  Get the tuples.

  Specified by:
    `getTuples` in class `LuceneQueryEngine.TupleCollector`
  Returns:
    the tuples; never null

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