[jbosstools-issues] [JBoss JIRA] (ERT-213) Support for JSON Schema Catalog [EBZ#494110]

[Friendly Jira Robot (JIRA)]

Friendly Jira Robot created ERT-213:
---------------------------------------

             Summary: Support for JSON Schema Catalog [EBZ#494110]
                 Key: ERT-213
                 URL: https://issues.jboss.org/browse/ERT-213
             Project: Eclipse Release Train
          Issue Type: Task
          Components: WTP Source Editing
            Reporter: Friendly Jira Robot
            Priority: Trivial


JSON Schema store provides a JSON Schema catalog at https://github.com/SchemaStore/schemastore/blob/master/src/api/json/catalog.json

My idea is to have the same thing than XML Catalog : 

 * System catalog where WTP JSON plugin host https://github.com/SchemaStore/schemastore/blob/master/src/api/json/catalog.json
 * User Catalog to defines your own catalog

When a JSON file is opened, it checks:

 * if a JSON Schema exists coming from the existing plugin extension point org.eclipse.wst.json.core.schemaCatalogContributions
 * if not, it uses System and User JSON catalog and download the well JSON Schema declared inside JSON Schema Catalog.

Takes samples:

1) User create a JSON file with name "package.json", the JSON Schema which is used comes from org.eclipse.wst.json.core.schemaCatalogContributions (because it exists)
2) User create a JSON file with name "babelrc.json". In this case, org.eclipse.wst.json.core.schemaCatalogContributions doesn't define it and http://json.schemastore.org/babelrc is downloaded, because it is declared like this:

-----------------------------------
"schemas": [
    {
      "name": "babelrc.json",
      "description": "Babel configuration file",
      "fileMatch": [ ".babelrc" ],
      "url": "http://json.schemastore.org/babelrc"
    },
-----------------------------------

inside the system JSON Schema catalog (see at 
https://github.com/SchemaStore/schemastore/blob/master/src/api/json/catalog.json#L7)

It should be good too to give the capability to link a JSON Schema to an image to know which icon should be displayed for the JSON file in the "Project Explorer".

Please note that today it exists JSON Catalog (which is a copy/paste from XML Catalog) in the core. An UI JSON Catalog must be implemented to show system catalog and user catalog (like XML Catalog).



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