org.apache.solr.highlight

Class SolrHighlighter

java.lang.Object

org.apache.solr.highlight.SolrHighlighter

Direct Known Subclasses:

DefaultSolrHighlighter, PostingsSolrHighlighter

public abstract class SolrHighlighter
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_PHRASE_LIMIT

Constructor Summary

Constructors

Constructor and Description
SolrHighlighter()

Method Summary

Methods

Modifier and Type	Method and Description
abstract NamedList<Object>	doHighlighting(DocList docs, Query query, SolrQueryRequest req, String[] defaultFields) Generates a list of Highlighted query fragments for each item in a list of documents, or returns null if highlighting is disabled.
protected boolean	emptyArray(String[] arr)
String[]	getHighlightFields(Query query, SolrQueryRequest request, String[] defaultFields) Return a String array of the fields to be highlighted.
boolean	isHighlightingEnabled(SolrParams params) Check whether Highlighting is enabled for this request.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_PHRASE_LIMIT

public static int DEFAULT_PHRASE_LIMIT

Constructor Detail

SolrHighlighter

public SolrHighlighter()

Method Detail

isHighlightingEnabled

public boolean isHighlightingEnabled(SolrParams params)

Check whether Highlighting is enabled for this request.

Parameters:

params - The params controlling Highlighting

Returns:

true if highlighting enabled, false if not.

getHighlightFields

public String[] getHighlightFields(Query query,
                          SolrQueryRequest request,
                          String[] defaultFields)

Return a String array of the fields to be highlighted. Falls back to the programatic defaults, or the default search field if the list of fields is not specified in either the handler configuration or the request.

Parameters:

query - The current Query

request - The current SolrQueryRequest

defaultFields - Programmatic default highlight fields, used if nothing is specified in the handler config or the request.

emptyArray

protected boolean emptyArray(String[] arr)

doHighlighting

public abstract NamedList<Object> doHighlighting(DocList docs,
                               Query query,
                               SolrQueryRequest req,
                               String[] defaultFields)
                                          throws IOException

Generates a list of Highlighted query fragments for each item in a list of documents, or returns null if highlighting is disabled.

Parameters:

docs - query results

query - the query

req - the current request

defaultFields - default list of fields to summarize

Returns:

NamedList containing a NamedList for each document, which in turns contains sets (field, summary) pairs.

Throws:

IOException