com.atlassian.greenhopper.web.rapid.chart

Class ChangeHistoryCollector<T>

java.lang.Object

org.apache.lucene.search.SimpleCollector

com.atlassian.greenhopper.web.rapid.chart.ChangeHistoryCollector<T>

All Implemented Interfaces:

org.apache.lucene.search.Collector, org.apache.lucene.search.LeafCollector

public class ChangeHistoryCollector<T>
extends org.apache.lucene.search.SimpleCollector

Constructor Summary

Constructors

Constructor and Description
ChangeHistoryCollector(org.apache.lucene.search.IndexSearcher searcher, ChangeHistoryCallback callback, BitSet filter, Boolean changedFrom, T changeValue, Set<String> fieldsToLoad)

Method Summary

Modifier and Type	Method and Description
void	collect(int doc)
protected void	doSetNextReader(org.apache.lucene.index.LeafReaderContext context)
static org.joda.time.DateTime	epochStringToDateTime(String epochString) Translates a string-ified long from lucene into a DateTime.
boolean	needsScores()
void	setScorer(org.apache.lucene.search.Scorer scorer)

Methods inherited from class org.apache.lucene.search.SimpleCollector

getLeafCollector

Methods inherited from class java.lang.Object

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

Constructor Detail

ChangeHistoryCollector

public ChangeHistoryCollector(org.apache.lucene.search.IndexSearcher searcher,
                              ChangeHistoryCallback callback,
                              BitSet filter,
                              Boolean changedFrom,
                              T changeValue,
                              Set<String> fieldsToLoad)

Method Detail

collect

public void collect(int doc)
             throws IOException

Specified by:

collect in interface org.apache.lucene.search.LeafCollector

Specified by:

collect in class org.apache.lucene.search.SimpleCollector

Throws:

IOException

doSetNextReader

protected void doSetNextReader(org.apache.lucene.index.LeafReaderContext context)
                        throws IOException

Overrides:

doSetNextReader in class org.apache.lucene.search.SimpleCollector

Throws:

IOException

needsScores

public boolean needsScores()

setScorer

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

Specified by:

setScorer in interface org.apache.lucene.search.LeafCollector

Overrides:

setScorer in class org.apache.lucene.search.SimpleCollector

Throws:

IOException

epochStringToDateTime

public static org.joda.time.DateTime epochStringToDateTime(String epochString)

Translates a string-ified long from lucene into a DateTime. As of 8.0, Jira uses long epoch-offsets to represent dates in the index. Here, we're parsing Strings rather than longs directly because Document.get(String) (currently used by callers of this method) automatically converts numeric values to Strings.

Parameters:

epochString - String representation of a long value, which in turn represents the number of milliseconds from the java epoch

Returns:

DateTime represented by the dateString