Question

I am working with AppEngine for Java, and I have a JDO entity defined as follows:

Quote
| id(Long) | quote(String) | author(String) |

I realized my quote could be from multiple authors in case I wanna capture a short discussion, so I need to change author from a simple String to a List<String>.

I seem to understand I can now query by single (or multiple) author by using the IN operator instead of the standard ==, like this:

Query q = _pm.newQuery(Quote.class);
//q.setFilter("author == authorParam");
q.setFilter("author IN [authorParam]");
q.declareParameters("String authorParam");

Will this work with the Java SDK?

Answer 1

Since when has “IN” been a JDOQL keyword? JDOQL shares syntax with Java, so use of {collectionObj}.contains(Object) is what all docs on the subject say, where collectionObj could be an input collection parameter