Enhance JSONWebService Invoker: allow usage of inner properties

• Type: Story
• Status: Closed
• Priority: Major
• Resolution: Completed
• Affects Version/s: 6.2.0 CE M5
• Fix Version/s: 6.2.0 CE M5
• Component/s: Portal Services, Portal Services > Legacy
• Labels: None
• Story Points: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/9370

Due to demand from the UI team, JSON WebService Invoker syntax will be enhanced to support manipulation of inner properties. The following requirements have to be implemented:

add variable to inner object

{"$p = /foo/get-foo-page" : {
    "$XXX1 = /foo/hello-world" : {
        "@userId" : "$p.page",
        "worldName" : "galaxy"
    },
    "data.$XXX2 = /foo/hello-world" : {
        "@userId" : "$p.page",
        "worldName" : "star"}
    }
}}

In this snippet we added variable XXX1 to the root variable p - this feature already existed. The new functionality is that now we can also add a variable to an inner property: data.XXX2, in the very same way how it is added to the root.

This snippet should work with and without variable XXX1. Also, JSONWS Invoker should respect the @JSON serialization hints of the inner object (here: 'data').

add variable to inner list, with constant value

{"$p = /foo/get-foo-page" : {
    "$XXX1 = /foo/hello-world" : {
        "@userId" : "$p.page",
        "worldName" : "galaxy"
    },
    "data.$XXX2 = /foo/hello-world" : {
        "@userId" : "$p.page",
        "worldName" : "star"
    },
    "list.$XXX3 = /foo/hello-world" : {
        "@userId" : "$p.page",
        "worldName" : "pulsar"
    }
}}

Variable XXX3 is added to the each element of the inner list. Assigned value is however a constant and equal for each element of the list.

add variable to inner list, referencing list element value

{"$p = /foo/get-foo-page" : {
    "$XXX1 = /foo/hello-world" : {
        "@userId" : "$p.page",
        "worldName" : "galaxy"
    },
    "data.$XXX2 = /foo/hello-world" : {
        "@userId" : "$p.page",
        "worldName" : "star"
    },
    "list.$XXX3 = /foo/hello-world" : {
        "@userId" : "$p.list.id",
        "worldName" : "pulsar"
    }
}}

Everything is the same as above, except the value for userId - this time we populate it with id value of current list element.