I am using Java 1.6.0_02. Is this a problem?
On Fri, Oct 3, 2008 at 5:35 PM, Michael McCandless <
[EMAIL PROTECTED]> wrote:
>
> Which Java environment are you running?
>
> super.clone() from SegmentInfos should produce a new SegmentInfos object.
>
> It seems like in your case it's somehow producing a Vector instead?
>
> Mike
>
>
> Paul Chan wrote:
>
> Hi Mike,
>>
>> I am actually using the Compass Search Engine which in turn makes use of
>> Lucene. They are doing the following in their code:
>>
>> IndexWriter indexWriter = new IndexWriter(dir, autoCommit, analyzer,
>> create, deletionPolicy);
>>
>> where autoCommit = false.
>>
>> In turn, Lucene will do the following:
>>
>> public class IndexWriter {
>>
>> public IndexWriter(Directory d, boolean autoCommit, Analyzer a,
>> boolean create, IndexDeletionPolicy deletionPolicy)
>> throws CorruptIndexException, LockObtainFailedException, IOException
>> {
>> init(d, a, create, false, deletionPolicy, autoCommit);
>> }
>>
>> private void init(Directory d, Analyzer a, final boolean create,
>> boolean closeDir, IndexDeletionPolicy deletionPolicy,
>> boolean autoCommit)
>> {
>> ...
>> ..
>> if (!autoCommit) {
>> rollbackSegmentInfos = (SegmentInfos) segmentInfos.clone();
>> }
>> }
>> }
>>
>> which calls the clone() method that causes the exception because
>> autoCommit
>> = false.
>>
>> On Fri, Oct 3, 2008 at 4:54 PM, Michael McCandless <
>> [EMAIL PROTECTED]> wrote:
>>
>>
>>> Can you describe what led up to this exception? Ie, what calls you made
>>> to
>>> Lucene before this.
>>>
>>> Mike
>>>
>>>
>>> Paul Chan wrote:
>>>
>>> I think I know what the problem is looking at the code:
>>>
>>>>
>>>> In SegmentInfos.java (line 321):
>>>>
>>>> class SegmentInfos extends Vector
>>>> {
>>>> public Object clone() {
>>>> SegmentInfos sis = (SegmentInfos) super.clone();
>>>> for(int i=0;i<sis.size();i++) {
>>>> sis.setElementAt(((SegmentInfo) sis.elementAt(i)).clone(), i);
>>>> }
>>>> return sis;
>>>> }
>>>> }
>>>>
>>>> We see that it is trying to cast a Vector into SegmentInfos which
>>>> explains
>>>> the ClassCastException. This is definitely a bug.
>>>>
>>>>
>>>> On Fri, Oct 3, 2008 at 3:40 PM, Paul Chan <[EMAIL PROTECTED]>
>>>> wrote:
>>>>
>>>> Hi,
>>>>
>>>>>
>>>>> I am using lucene 2.3.2 and I encounter the following exception when I
>>>>> try
>>>>> to insert a object into the index.
>>>>>
>>>>> Caused by: java.lang.ClassCastException: java.util.Vector cannot be
>>>>> cast
>>>>> to
>>>>> org.apache.lucene.index.SegmentInfos
>>>>> at org.apache.lucene.index.SegmentInfos.clone(SegmentInfos.java:321)
>>>>> at org.apache.lucene.index.IndexWriter.init(IndexWriter.java:715)
>>>>> at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:666)
>>>>>
>>>>> Has Anyone seen this problem before? What seems to be the problem?
>>>>>
>>>>> Thanks!
>>>>>
>>>>>
>>>>>
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>>>
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