How Do I retrieve all work items for a project through a web call?
2 answers
As far as I can tell, both approaches are possible.
For the HTTP interface check https://github.com/OSLC/lyo-samples/blob/master/oslc4j-client-samples/src/main/java/org/eclipse/lyo/oslc4j/client/samples/EWMSample.java
For the Java approach see https://rsjazz.wordpress.com/2012/10/29/using-work-item-queris-for-automation/ and https://rsjazz.wordpress.com/2012/11/19/using-expressions-for-automation/ AND THE LINKS in the section Getting Started.
Although I have tried with plain Java API numerous times, lately using RPT has resulted in very quick data extraction. Please consider it as well (https://jazz.net/forum/questions/199036/using-the-reportable-rest-api-how-do-i-filter-workitems-by-type)