Hi,
I'm trying to upgrade to neo4j 3.1.1 from 2.3.1 and I'm getting an error
when trying to open a index on a read only embedded database. Here is some
sample code:
GraphDatabaseService graphDb = new
GraphDatabaseFactory().newEmbeddedDatabaseBuilder(new
File("/path/to/neo4j/graph/db"))
.setConfig(GraphDatabaseSettings.read_only, "true").newGraphDatabase();
try (Transaction tx = graphDb.beginTx()) {
IndexManager indexManager = graphDb.index();
Index<Node> nodeIndex = indexManager.forNodes("atlas");
indexHits = nodeIndex.get("atlasId", "13009140");
assertEquals(1, indexHits.size());
}
This used to work fine in 2.3.1, but now it throws the following exception:
org.neo4j.graphdb.security.WriteOperationsNotAllowedException: No write
operations are allowed on this database. This is a read only Neo4j instance.
at org.neo4j.kernel.impl.factory.ReadOnly.assertCanWrite(ReadOnly.java:30)
at
org.neo4j.kernel.impl.api.KernelStatement.dataWriteOperations(KernelStatement.java:115)
at
org.neo4j.kernel.impl.coreapi.IndexProviderImpl.getOrCreateNodeIndex(IndexProviderImpl.java:52)
at
org.neo4j.kernel.impl.coreapi.IndexManagerImpl.forNodes(IndexManagerImpl.java:81)
at
org.neo4j.kernel.impl.coreapi.IndexManagerImpl.forNodes(IndexManagerImpl.java:75)
...
I don't understand why IndexManagerImpl.forNodes is calling
IndexProviderImpl.getOrCreateNodeIndex.
I'm not trying to create any nodes, I just want to search the existing node
index. How do I search an index in a read only embedded graph database
with neo4j 3.1.1? Thanks in advance for any help.
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