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Joins with sub-queries: tests #151

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65 changes: 62 additions & 3 deletions src/test/java/ru/rt/restream/reindexer/connector/NestedJoinTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -68,6 +68,60 @@ public void testNestedInnerJoin() {
assertThat(booksById.containsKey(1004), is(false));
}

@Test
public void testInnerJoinWithSubQueryInJoin() {
openNamespaces();
insertFixture();

Query<Location> moscowLocationIds = db.query(LOCATIONS_NS, Location.class)
.select("id")
.where("city", EQ, "Moscow");

Query<Author> authors = db.query(AUTHORS_NS, Author.class)
.where("locationId", SET, moscowLocationIds)
.on("authorId", EQ, "id");

Map<Integer, Book> booksById = byId(db.query(BOOKS_NS, Book.class)
.innerJoin(authors, "authors")
.toList());

assertThat(booksById.size(), is(2));
assertBookAuthor(booksById.get(1000), 100, "Author1");
assertBookAuthor(booksById.get(1002), 100, "Author1");
assertThat(booksById.containsKey(1001), is(false));
assertThat(booksById.containsKey(1003), is(false));
assertThat(booksById.containsKey(1004), is(false));
}

@Test
public void testNestedInnerJoinWithSubQueryInNestedJoin() {
openNamespaces();
insertFixture();

Query<Country> northernCountryIds = db.query(COUNTRIES_NS, Country.class)
.select("id")
.where("name", EQ, "Northern");

Query<Location> locations = db.query(LOCATIONS_NS, Location.class)
.where("countryId", SET, northernCountryIds)
.on("locationId", EQ, "id");

Query<Author> authors = db.query(AUTHORS_NS, Author.class)
.innerJoin(locations, "locations")
.on("authorId", EQ, "id");

Map<Integer, Book> booksById = byId(db.query(BOOKS_NS, Book.class)
.innerJoin(authors, "authors")
.toList());

assertThat(booksById.size(), is(2));
assertAuthorLocation(booksById.get(1000), 100, "Author1", "Moscow");
assertAuthorLocation(booksById.get(1002), 100, "Author1", "Moscow");
assertThat(booksById.containsKey(1001), is(false));
assertThat(booksById.containsKey(1003), is(false));
assertThat(booksById.containsKey(1004), is(false));
}

@Test
public void testLeftJoinWithNestedInnerJoin() {
openNamespaces();
Expand Down Expand Up @@ -244,14 +298,19 @@ private void insertFixture() {

private static void assertAuthorLocation(Book book, int expectedAuthorId, String expectedAuthorName,
String expectedCity) {
assertBookAuthor(book, expectedAuthorId, expectedAuthorName);
Author author = book.authors.get(0);
assertThat(author.locations.size(), is(1));
assertThat(author.locations.get(0).id, is(author.locationId));
assertThat(author.locations.get(0).city, is(expectedCity));
}

private static void assertBookAuthor(Book book, int expectedAuthorId, String expectedAuthorName) {
assertThat(book.authors.size(), is(1));
Author author = book.authors.get(0);
assertThat(author.id, is(expectedAuthorId));
assertThat(author.id, is(book.authorId));
assertThat(author.name, is(expectedAuthorName));
assertThat(author.locations.size(), is(1));
assertThat(author.locations.get(0).id, is(author.locationId));
assertThat(author.locations.get(0).city, is(expectedCity));
}

private static Map<Integer, Book> byId(List<Book> books) {
Expand Down
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