org.apache.lucene.index
Class CompositeReaderContext

java.lang.Object
  org.apache.lucene.index.IndexReaderContext
      org.apache.lucene.index.CompositeReaderContext

public final class CompositeReaderContext
extends IndexReaderContext

IndexReaderContext for CompositeReader instance.

Field Summary

Fields inherited from class org.apache.lucene.index.IndexReaderContext

docBaseInParent, isTopLevel, ordInParent, parent

Method Summary

List<IndexReaderContext>	children() Returns the context's children iff this context is a composite context otherwise null.
List<AtomicReaderContext>	leaves() Returns the context's leaves if this context is a top-level context.
CompositeReader	reader() Returns the IndexReader, this context represents.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

leaves

public List<AtomicReaderContext> leaves()
                                 throws UnsupportedOperationException

Description copied from class: IndexReaderContext

Returns the context's leaves if this context is a top-level context. For convenience, if this is an AtomicReaderContext this returns itself as the only leaf.

Note: this is convenience method since leaves can always be obtained by walking the context tree using IndexReaderContext.children().

Specified by:

leaves in class IndexReaderContext

Throws:

UnsupportedOperationException - if this is not a top-level context.

See Also:

IndexReaderContext.children()

children

public List<IndexReaderContext> children()

Description copied from class: IndexReaderContext

Returns the context's children iff this context is a composite context otherwise null.

Specified by:

children in class IndexReaderContext

reader

public CompositeReader reader()

Description copied from class: IndexReaderContext

Returns the IndexReader, this context represents.

Specified by:

reader in class IndexReaderContext