org.apache.lucene.search.vectorhighlight
Interface FragmentsBuilder

All Known Implementing Classes:

BaseFragmentsBuilder, ScoreOrderFragmentsBuilder, SimpleFragmentsBuilder

public interface FragmentsBuilder

FragmentsBuilder is an interface for fragments (snippets) builder classes. A FragmentsBuilder class can be plugged in to Highlighter.

Method Summary

String	createFragment(IndexReader reader, int docId, String fieldName, FieldFragList fieldFragList) create a fragment.
String[]	createFragments(IndexReader reader, int docId, String fieldName, FieldFragList fieldFragList, int maxNumFragments) create multiple fragments.

Method Detail

createFragment

String createFragment(IndexReader reader,
                      int docId,
                      String fieldName,
                      FieldFragList fieldFragList)
                      throws IOException

create a fragment.

Parameters:

reader - IndexReader of the index

docId - document id to be highlighted

fieldName - field of the document to be highlighted

fieldFragList - FieldFragList object

Returns:

a created fragment or null when no fragment created

Throws:

IOException

createFragments

String[] createFragments(IndexReader reader,
                         int docId,
                         String fieldName,
                         FieldFragList fieldFragList,
                         int maxNumFragments)
                         throws IOException

create multiple fragments.

Parameters:

reader - IndexReader of the index

docId - document id to be highlighter

fieldName - field of the document to be highlighted

fieldFragList - FieldFragList object

maxNumFragments - maximum number of fragments

Returns:

created fragments or null when no fragments created. size of the array can be less than maxNumFragments

Throws:

IOException