Hey,
im trying to save some objects to the database, i have a unique constraint
defined on my class product. The code looks like this:
graphDbFactory = new OrientGraphFactory("plocal:" +
server.getDatabaseDirectory() + File.separator + graphDatabase, userName,
userPassword);
graphInstance = graphDbFactory.getTx();
graphInstance.createKeyIndex("name", Vertex.class, new Parameter("type",
"UNIQUE"), new Parameter("class", "Product"));
...
// save: this is called twice
try {
// Graph
OrientVertex v = graphInstance.addVertex("class:" +
getGenericClass().getSimpleName()); // 1st operation: implicitly begin a
transaction
// String evaluates to class:Product
v = createVertexFromEntity(entity, v);
graphInstance.commit(); // commit the transaction
entity.setId(v.getIdentity().toString());
return entity;
} catch (OTransactionException e) {
graphInstance.rollback();
throw new RuntimeException(e);
}
...
Iterable<Vertex> vertices = graphInstance.getVertices("Product.name",
name);
...
// help method
protected OrientVertex createVertexFromEntity(T entity, OrientVertex v) {
Map<String, Object> properties = new HashMap<>();
properties.put("name", entity.getName());
// set properties
v.setProperties(properties);
return v;
}
the code in the try/catch block is called twice with two seprated product
objects having the same name (e.g. "product1").
both products are saved in the database, the constraint won't trigger. if i
call the graphInstance.getVertices("Product.name", name) i get a emty
iterator back.
if i rebuild the index later (in studio) i get an error on the duplicate
key.
Any ideas why this happens? any mistakes in the code above?
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