Collection attributes represented as string in schema [DATAREST-580]

Etki opened DATAREST-580 and commented

Hi.
First of all, i want to say that is highly possible that i misunderstood something. I'm new to Java and sometimes i get lost inside source code and specs.
I'm building new application using Spring REST data and @RestResource annotations, and i develop an automatic entity admin dashboard for that application. The point is, whenever i dump entity schema, both *-to-one and *-to-many relationship attribute appear the same - as "string" type of "uri" format. As far as i understand, *-to-many relationships should be represented as "array" type; i haven't fiddled a lot with curl, but it seems that SDR simply rejects passed entity if it contains string representation of link instead of array. As you can see in related URL, passed type doesn't have a chance to be specified as array, because if it receives "uri" format, it is represented as string only. So, to sum up, i believe that following attribute

@ManyToMany
List<X> exes;

Should be represented in schema as

"exes": {
    "type": "array",
    "format": "uri"
}

While it appears as

"exes": {
    "type": "string",
    "format": "uri"
}

Affects: 2.3 GA (Fowler)

Reference URL: https://github.com/spring-projects/spring-data-rest/blob/018fa22593989291d392115c43af5406145e979e/spring-data-rest-webmvc/src/main/java/org/springframework/data/rest/webmvc/json/JsonSchema.java#L355-L358