GraphQL Queries for property comparison between different nodes

[Palak-K9]

I am trying to convert some Cypher Queries to GraphQL queries using neo4j-graphql-java

I have the following nodes - Application, Customer, PremCustomer, Channel

I am using the below Schema

type Application
 Id: Int!
 author: String!
 code: Int!
 name: String!
 hasCustomers: [Customer!]! @relation(name: "HAS_CUSTOMER", direction: OUT)
}

type Customer{
 custId: Int!
 premId: Int!
 name: String!
 value: Int!
}

type PremCustomer{
 Id: Int!
 name: String!
}

type Channel{
 Id: Int
 name: String!
 rating: Int!
}

I have the following Cypher queries -

MATCH (app: Application)
OPTIONAL MATCH (app)-[:HAS_CUSTOMER]->(cust: Customer {premId: 5}) 
OPTIONAL MATCH (premCust:PremCustomer) WHERE premCust.Id=cust.premId 
OPTIONAL MATCH (ch: Channel) WHERE ch.Id=cust.value
RETURN DISTINCT app{a: premCust.Id, b: premCust.name, c: cust.value, d: ch.rating}

How can I create Graphql query/ies for the above Cypher Query?

I tried to do Id comparisons for different nodes but the syntax doesnt allow this.
I also tried the below syntax -

{
  firstPart: applications(where: {hasCustomers_some: {premId: 5}}){
       hasCustomers{
           premId
           name
       }
 }

And then tried to utilise the alias firstPart to use its results for further comparison like below-

premCustomers(where: {Id=firstPart.hasCustomers.premId}){
...
}

But it isn't working.

So, Is there any other syntax for GraphQL to achieve the results I am getting using the Cypher Queries?

[Andy2003]

With a singe request it is not possible to achieve with your schema.
Your schema does not have any relation between Customer and PremCustomer.
For me it looks like you are trying to use the ids as foreign key as in an RDBMS. Have you tried to model your schema with relations?

[Palak-K9]

Yes, my schema does not have any relation between Customer and PremCustomer, actually, the requirement is like this.

With a single request it is not possible to achieve with your schema. - Can we achieve the desired result using multiple queries? (Condition: no relation between Customer and PremCustomer)