Support multiple dsoType values in discovery

[benbosman]

References

• Related to REST Contract

Description

This is a minor change to support e.g. /server/api/discover/search/objects?dsoType=Collection&dsoType=Community to return communities and collections

We discovered this was relevant to create the Angular UI to import or export a CSV, where a collection or community should be selected (and both should be selectable)

Instructions for Reviewers

There's no need to reindex data. You can test it using:

• no dsoType parameter
• /server/api/discover/search/objects?dsoType=Collection&dsoType=Community
• /server/api/discover/search/objects?dsoType=Item
• /server/api/discover/search/objects?dsoType=Item&dsoType=Collection
• …

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[tdonohue]

👍 Looks good to me overall, @benbosman ! I've tested it manually and it works.

A few very minor requests before we merge...I'd just like us to add JavaDocs to the new methods. Beyond that, this will be ready to merge once JavaDocs are added.

[benbosman]

@tdonohue Samuel has added the JavaDocs

[tdonohue]

Thanks @benbosman and @samuelcambien ! Merging now