feat: support nested relationships in where criteria expressions

[igdianov]

Given the following query:

  Authors(where: {
    books: {
      author: {
        name: {LIKE: "Leo"}
      }
    }
  }) {
    select {
      id
      name
      books {
        id
        title
        genre
      }
    }
  }

Expected result:

{
  "data": {
    "Authors": {
      "select": [
        {
          "id": 1,
          "name": "Leo Tolstoy",
          "books": [
            {
              "id": 2,
              "title": "War and Peace",
              "genre": "NOVEL",
            },
            {
              "id": 3,
              "title": "Anna Karenina",
              "genre": "NOVEL",
            }
          ]
        }
      ]
    }
  }
}

And collection filtering in nested relationships :

  Books(where: {
    title:{LIKE: "War"}
    author: {
      name:{LIKE: "Leo"}
      books: {title: {LIKE: "Anna"}}
    }
  }) {
    select {
      id
      title
      genre
      author {
        id
        name
        books {
          id
          title
          genre
        }
      }
    }
  }

Will return:

{
  "data": {
    "Books": {
      "select": [
        {
          "id": 2,
          "title": "War and Peace",
          "genre": "NOVEL",
          "author": {
            "id": 1,
            "name": "Leo Tolstoy",
            "books": [
              {
                "id": 3,
                "title": "Anna Karenina",
                "genre": "NOVEL"
              }
            ]
          }
        }
      ]
    }
  }
}

Fixes #97

Fixes #77

[codecov]

Codecov Report

Merging #108 into master will decrease coverage by 0.16%.
The diff coverage is 63.63%.

@@             Coverage Diff              @@
##             master     #108      +/-   ##
============================================
- Coverage     65.75%   65.59%   -0.17%     
- Complexity      366      369       +3     
============================================
  Files            37       39       +2     
  Lines          2015     2046      +31     
  Branches        297      300       +3     
============================================
+ Hits           1325     1342      +17     
- Misses          562      576      +14     
  Partials        128      128

Impacted Files	Coverage Δ	Complexity Δ
...ventures/graphql/jpa/query/example/books/Book.java	0% <ø> (ø)	0 <0> (ø)	⬇️
...phql/jpa/query/example/starwars/DroidFunction.java	0% <0%> (ø)	0 <0> (?)
...phql/jpa/query/example/starwars/DroidFunction.java	0% <0%> (ø)	0 <0> (?)
...ures/graphql/jpa/query/example/starwars/Droid.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ures/graphql/jpa/query/example/starwars/Droid.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...jpa/query/schema/impl/GraphQLJpaSchemaBuilder.java	86.84% <100%> (+0.39%)	106 <4> (+3)	⬆️
...a/query/schema/impl/QraphQLJpaBaseDataFetcher.java	70.89% <40%> (-1.17%)	111 <0> (ø)

---

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[codecov]

Codecov Report

Merging #108 into master will increase coverage by 0.08%.
The diff coverage is 70%.

@@             Coverage Diff              @@
##             master     #108      +/-   ##
============================================
+ Coverage     66.37%   66.45%   +0.08%     
- Complexity      372      382      +10     
============================================
  Files            37       39       +2     
  Lines          2034     2054      +20     
  Branches        302      302              
============================================
+ Hits           1350     1365      +15     
- Misses          552      558       +6     
+ Partials        132      131       -1

Impacted Files	Coverage Δ	Complexity Δ
...a/query/schema/impl/QraphQLJpaBaseDataFetcher.java	72.77% <ø> (+0.85%)	115 <0> (+2)	⬆️
...ntures/graphql/jpa/query/example/books/Author.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...phql/jpa/query/example/starwars/DroidFunction.java	0% <0%> (ø)	0 <0> (?)
...phql/jpa/query/example/starwars/DroidFunction.java	0% <0%> (ø)	0 <0> (?)
...ventures/graphql/jpa/query/example/books/Book.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ures/graphql/jpa/query/example/starwars/Droid.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ures/graphql/jpa/query/example/starwars/Droid.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ry/schema/impl/GraphQLJpaOneToManyDataFetcher.java	73.68% <100%> (ø)	13 <0> (ø)	⬇️
...jpa/query/schema/impl/GraphQLJpaSchemaBuilder.java	87.27% <100%> (+0.43%)	113 <7> (+8)	⬆️
... and 3 more

---

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[molexx]

Great thanks, will try the branch on our project!