Im found cipher query in StudyBuddyRepository.java but it fully unused in app.
Can you show me how to use cipher query in SDN4 with Angular? I tried do custom cipher query myself but without success.

Without a license, this project isn't open source and no one can use the code.

Please use something like http://choosealicense.com/ to decide what license to use. I recommend MIT or GPL.

Realizing that Spring Data Neo4j 4 is currently only at a milestone release, is there an incompatibility between Spring Data Neo4j 4.0.0.M1 and Spring Data Rest?

We are exploring making use of Spring Data Neo4j 4 combined with Spring Data Rest for an upcoming project. As part of migrating our proof of concept from Spring Data Neo4j 3.2.2 to Spring Data Neo4j 4.0.0.M1, we’ve hit a snag in that any restful request received by Spring Data Rest that return data result in an exception.

Removing our project as contributing to the issue, we have been able to reproduce the problem by adding Spring Data Rest to the sdn4-univesrity example project. Our steps to produce the issue are:

1. Checkout sdn4-university from github
2. Add the following dependency to sdn4-university’s pom.xml:
   
   org.springframework.boot
   spring-boot-starter-data-rest
   

3)Start a local instance of Neo4j with an empty database
4) Start sdn4-university by executing a “mvn clean spring-boot:run” from within the proejct
5) Use a browser to execute "http://localhost:8080/schools”. With no data populated, the request succeeds and returns empty results of “{}"
6) Use a browser to execute “http://localhost:8080/api/reload” to load sample data
7) Use a browser to execute "http://localhost:8080/schools” now returns:

{"cause":null,"message":"Cannot create self link for class school.domain.School! No persistent entity found!"}

The behavior has been reproduced against sending query requests for each entity (schools, teachers, departments, etc) and when running against both neo4j-community-2.1.8 and neo4j-enterprise-2.2.1running locally in server mode. No exceptions are logged in either of Neo4j's data/log/console.log or data/log/neo4j.0.0.log files.

After modifying sdn4-university's pom.xml to make use of:

The following exception are logged on the console for each request (in this case for a department):

12:34:31.165 [http-nio-8080-exec-10] INFO org.neo4j.ogm.session.Neo4jSession - --------- new request ----------
12:34:31.165 [http-nio-8080-exec-10] INFO org.neo4j.ogm.session.Neo4jSession - getOrCreateTransaction() being called on thread: 29
12:34:31.165 [http-nio-8080-exec-10] INFO org.neo4j.ogm.session.Neo4jSession - Session identity: org.neo4j.ogm.session.Neo4jSession@7c5276ab
12:34:31.165 [http-nio-8080-exec-10] INFO org.neo4j.ogm.session.Neo4jSession - There is no existing transaction, creating a transient one
12:34:31.165 [http-nio-8080-exec-10] INFO o.n.o.session.request.DefaultRequest - POST http://localhost:7474/db/data/transaction/commit, request: {"statements":[{"statement":"MATCH p=(n:Department)-[*0..1]-(m) RETURN collect(distinct p)","parameters":{},"resultDataContents":["graph"]}]}
12:34:31.186 [http-nio-8080-exec-10] INFO o.n.o.session.request.DefaultRequest - response is OK, creating response handler
12:34:31.197 [http-nio-8080-exec-10] WARN o.neo4j.ogm.mapper.GraphEntityMapper - Unable to map iterable of type: class school.domain.Department onto property of school.domain.Subject
12:34:31.198 [http-nio-8080-exec-10] WARN o.neo4j.ogm.mapper.GraphEntityMapper - Unable to map iterable of type: class school.domain.Department onto property of school.domain.Subject
12:34:31.198 [http-nio-8080-exec-10] WARN o.neo4j.ogm.mapper.GraphEntityMapper - Unable to map iterable of type: class school.domain.Department onto property of school.domain.Subject
12:34:31.198 [http-nio-8080-exec-10] WARN o.neo4j.ogm.mapper.GraphEntityMapper - Unable to map iterable of type: class school.domain.Department onto property of school.domain.Subject
12:34:31.198 [http-nio-8080-exec-10] WARN o.neo4j.ogm.mapper.GraphEntityMapper - Unable to map iterable of type: class school.domain.Department onto property of school.domain.Subject
12:34:31.198 [http-nio-8080-exec-10] WARN o.neo4j.ogm.mapper.GraphEntityMapper - Unable to map iterable of type: class school.domain.Department onto property of school.domain.Subject
12:34:31.198 [http-nio-8080-exec-10] WARN o.neo4j.ogm.mapper.GraphEntityMapper - Unable to map iterable of type: class school.domain.School onto property of school.domain.Department
12:34:31.198 [http-nio-8080-exec-10] WARN o.neo4j.ogm.mapper.GraphEntityMapper - Unable to map iterable of type: class school.domain.School onto property of school.domain.Department
12:34:31.199 [http-nio-8080-exec-10] WARN o.neo4j.ogm.mapper.GraphEntityMapper - Unable to map iterable of type: class school.domain.School onto property of school.domain.Department
12:34:31.199 [http-nio-8080-exec-10] WARN o.neo4j.ogm.mapper.GraphEntityMapper - Unable to map iterable of type: class school.domain.Department onto property of school.domain.Subject
12:34:31.199 [http-nio-8080-exec-10] WARN o.neo4j.ogm.mapper.GraphEntityMapper - Unable to map iterable of type: class school.domain.Department onto property of school.domain.Subject
12:34:31.199 [http-nio-8080-exec-10] WARN o.neo4j.ogm.mapper.GraphEntityMapper - Unable to map iterable of type: class school.domain.Department onto property of school.domain.Subject
12:34:31.199 [http-nio-8080-exec-10] WARN o.neo4j.ogm.mapper.GraphEntityMapper - Unable to map iterable of type: class school.domain.Department onto property of school.domain.Subject
12:34:31.203 [http-nio-8080-exec-10] WARN o.neo4j.ogm.mapper.GraphEntityMapper - Unable to map iterable of type: class school.domain.Department onto property of school.domain.Subject
12:34:31.207 [http-nio-8080-exec-10] ERROR o.s.d.r.w.AbstractRepositoryRestController - Cannot create self link for class school.domain.Department! No persistent entity found!
java.lang.IllegalArgumentException: Cannot create self link for class school.domain.Department! No persistent entity found!
at org.springframework.data.rest.webmvc.PersistentEntityResourceAssembler.getSelfLinkFor(PersistentEntityResourceAssembler.java:81) ~[spring-data-rest-webmvc-2.1.4.RELEASE.jar:na]
...
...

As can be seen in the output above, it appears the generated cypher query may be in correct:

MATCH p=(n:Department)-[*0..1]-(m) RETURN collect(distinct p)

Executing this in the Neo4j console returns a graph including departments, schools, and subjects.

Is this a sdn4-university, Spring Data Neo4j 4, or Spring Data Rest issue?

This variable not used anywhere:

<properties>
    <neo4j.version>2.1.7</neo4j.version>
</properties>

There are school-related javascript files, but no equivalent SchoolController.java or School.java domain files. Also getting messages like these in the logs:

looking for concrete class to resolve label: School
...
This label is not known in the mapping context. Moving on...
...
No resolving class found!!

Are Spring Data Neo4j Rest’s pagination and sorting capabilities compatible with custom repository queries?

Based on what I am seeing I am unsure if A) the functionality is simply not supported or B) there is an issue with either C) Spring Data Rest or D) Spring Data Rest Neo4j.

Removing our project as contributing to the issue, we have been able to reproduce the problem by adding Spring Data Rest to the sdn4-univesrity example project. Our steps to produce the issue are:

1. Checkout sdn4-university from github
2. Add the following dependency to sdn4-university’s pom.xml:

org.springframework.data
spring-data-neo4j-rest
3.4.0.RELEASE

3. Replace the project's StudentRepository with the version attached to this issue
   4)Start a local instance of Neo4j with an empty database
4. Start sdn4-university by executing a “mvn clean spring-boot:run -Drun.jvmArguments="-Dusername=[username] -Dpassword=[password]” from within the proejct
5. Populate the database by using a browser to http://localhost:8080/api/reload
6. Use a browser to hit "http://localhost:8080/students/search/findStudyBuddyStudents_with_paginiation?studentId=24"

You will encounter the following stacktrace:

...
14:14:54.217 [main] INFO school.Application - Started Application in 6.456 seconds (JVM running for 7.116)
14:15:01.209 [qtp865744496-15] INFO school.Application - Initialising session-scoped Session Bean
14:15:01.209 [qtp865744496-15] INFO o.s.d.n.config.Neo4jConfiguration - Initialising Neo4jSession
14:15:01.630 [qtp865744496-15] INFO o.s.d.n.config.Neo4jConfiguration - Intercepted exception
14:15:01.641 [qtp865744496-15] WARN o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver - Handler execution resulted in exception: Failed to convert from type java.util.LinkedHashSet to type org.springframework.data.domain.Page for value '[Student{id=81, name='Ciara Odom', courses=0, studyBuddies=0}, Student{id=89, name='Graiden Haynes', courses=0, studyBuddies=0}, Student{id=162, name='Vaughan Haynes', courses=0, studyBuddies=0}, Student{id=147, name='Michael Daniels', courses=0, studyBuddies=0}, Student{id=146, name='Darryl Rosario', courses=0, studyBuddies=0}]'; nested exception is org.springframework.core.convert.ConverterNotFoundException: No converter found capable of converting from type java.util.LinkedHashSet to type org.springframework.data.domain.Page

...

The error message indicates the Cypher query is correctly executed (you can see the correct results in the log) but that LinkedHashSet can not be converted to Spring Data's Page object.

A few questions:

1. Are pagination and sorting such as this supported when using a custom @query? If so, can you please provide a working sample? (I am unable to find one in the documentation).
2. Assuming this functionality is supported, what can we do to help resolve the issue? Does it lie within Spring Data Rest or Spring Data Neo4j Rest?

Currently the project won't build currently, right now it returns:

Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.neo4j.ogm.session.SessionFactory]: Factory method 'getSessionFactory' threw exception; nested exception is java.lang.StringIndexOutOfBoundsException: String index out of range: 1
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599)

Dear,
I was tying to build this project but maven kept reporting an error " package org.springframework.boot.neo4j does not exist" as you can see from the attachment. I didn't change any pom.xml configuration. May I know how to solve this problem? Thank you very much.

Hello,

Sorry for bothering you, but is the embedded instance of neo4j start automatically by spring boot because when I follow the same steps of this project I get connection refused. Which I think it mean the instance didn't start.

I am using old versions I have check you old commit and it should be fine I think.
I have only one difference

<dependency>
            <groupId>org.neo4j</groupId>
            <artifactId>neo4j</artifactId>
            <version>3.1.0</version>
            <scope>runtime</scope>
        </dependency>  

this dependency is declared as a dependency of another dependency of the spring boot module. Can this be a problem?

https://stackoverflow.com/questions/51331870/embedded-neo4j-with-spring-boot

Thank you.

Hello,

I have tried this app locally and found it is working correctly. But after deploying this app to the Heroku environment I am getting NullPointerException. I have tried api/reload end point to load neo4j school data which has loaded the data into my Graphenedb instance on Heroku correctly. But I am getting the following exception (attached). Any help is appreciated.

Thanks,
Durga

npe-neo4j-ogm.txt

I have problems with writing integrations tests based on sdn4-university.

Would it be possible to enhance the project with basic tests to show how to access neo4j?

After the SF 5.0 SDN5.0 SD2.0 release in Oct 2017, should we update this project too?

I can't seem to be able to enroll students in courses from either the student detail view or the course detail view. Upon making selections and saving, the selections are never preserved. I've never seen a checkbox load as checked on these pages, they're always unchecked. (teacher specialties never seem to save either)

Sometimes other fields go missing too when I revisit the course detail view, such as the course teacher or subject.