Using Neo4j driver for java, i want to send a search query to the database such as:
MATCH(a:`Label`{Property:"NODE_PROPERTY"})
RETURN *
First i create a session and the i use the run methods of the driver to run a query:
Result run = session.run(query);
run variable contains a list of Records. My question is how can i consume the records so that i can convert them to java objects? I tried to get the values of the results but since they're not iterable, it's not possible to get them one by one.
Result
implements Iterator<Record>
, so there is a bunch of ways of consuming it, eg:
While loop (Java 6 style):
Result result = session.run(query);
List<MyPojo> myList = new ArrayList<>();
while(result.hasNext()) {
Record r = result.next();
myList.add(mapToMyPojo(r));
}
Stream (Java 8+ style):
Result result = session.run(query);
List<MyPojo> myList = result.stream()
.map(record -> mapToMyPojo(record))
.collect(Collectors.toList());
Using Result.list(Function<Record,T> mapFunction) :
Result result = session.run(query);
List<MyPojo> myList = result.list(r -> mapToMyPojo(r));
Mapping to a Java object is pretty stright-forward:
public MyPojo mapToMyPojo(Record record) {
MyPojo pojo = new MyPojo();
pojo.setProperty(record.get("Property").asString());
// ...
return pojo;
}
Although instead of mapping results manually, you might want to use neo4j-ogm
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