Hi everybody,
I want to query the Index with the Method query(String). Therefore, I build my
query and execute the method:
StringBuffer query = new StringBuffer();
...
query.append(" AND ");
query.append("UUID:");
query.append("MUST_NOT ");
query.append("\"" + uuid + "\"");
IndexHits<Node> hits = nodeIndex.query(query.toString());
This leads to the following Exception:
Exception in thread "main" java.lang.NullPointerException
at
org.apache.lucene.util.SimpleStringInterner.intern(SimpleStringInterner.java:54)
at org.apache.lucene.util.StringHelper.intern(StringHelper.java:36)
at org.apache.lucene.index.Term.<init>(Term.java:38)
at
org.apache.lucene.queryParser.QueryParser.getFieldQuery(QueryParser.java:643)
at
org.apache.lucene.queryParser.QueryParser.getFieldQuery(QueryParser.java:752)
at org.apache.lucene.queryParser.QueryParser.Term(QueryParser.java:1556)
at
org.apache.lucene.queryParser.QueryParser.Clause(QueryParser.java:1309)
at
org.apache.lucene.queryParser.QueryParser.Query(QueryParser.java:1266)
at
org.apache.lucene.queryParser.QueryParser.TopLevelQuery(QueryParser.java:1226)
at org.apache.lucene.queryParser.QueryParser.parse(QueryParser.java:206)
at org.neo4j.index.impl.lucene.IndexType.query(IndexType.java:281)
at org.neo4j.index.impl.lucene.LuceneIndex.query(LuceneIndex.java:207)
at org.neo4j.index.impl.lucene.LuceneIndex.query(LuceneIndex.java:218)
at testdata.ReadTestData.listInformation(ReadTestData.java:112)
at testdata.ReadTestData.main(ReadTestData.java:153)
The syntax of the build query is correct - at least it executes in Luke
(https://code.google.com/p/luke/) without complaining.
Am I doing something wrong or did I miss something?
Cheers,
Didi
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