[LUCENE-3939] ClassCastException thrown in the map(String,int,TermVectorOffsetInfo[],int[]) method in org.apache.lucene.index.SortedTermVectorMapper

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.0.2, 3.1, 3.4, 3.5
• Component/s: core/index
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: SHIN HWEI TAN
• Created: 30/Mar/12 21:31
• Updated: 28/Aug/22 13:13

Description

The method "map" in the "SortedTermVectorMapper" class does not check the parameter "term" for the valid values. It throws ClassCastException when called with a invalid string for the parameter "term" (i.e., "var3.map("*", (-1), null, null)"). The exception thrown is due to an explict cast(i.e., casting the return value of termToTVE.get(term) to type "TermVectorEntry").

Suggested Fixes: Replace the beginning of the method body for the class "SortedTermVectorMapper" by changing it like this:

public void map(String term, int frequency, TermVectorOffsetInfo[] offsets, int[] positions) {
if(termToTVE.get(term) instanceof TermVectorEntry)

{ TermVectorEntry entry = (TermVectorEntry) termToTVE.get(term); ... }

}