Example usage for io.vertx.core.json JsonArray isEmpty

Introduction

In this page you can find the example usage for io.vertx.core.json JsonArray isEmpty.

Prototype

public boolean isEmpty() 

Source Link

Document

Are there zero items in this JSON array?

Usage

From source file:org.folio.auth.permissions_module.impl.MongoPermissionsStore.java

@Override
public Future<JsonArray> getExpandedPermissions(String permission, String tenant) {
    //System.out.println("Permissions> Expanding permission '"+ permission + "' on tenant '"+
    //        tenant + "'");
    JsonObject query = new JsonObject().put("permission_name", permission).put("tenant", tenant);
    JsonArray permList = new JsonArray();
    Future<JsonArray> future = Future.future();
    mongoClient.find("permissions", query, res -> {
        if (res.succeeded() && res.result().size() > 0) {
            //System.out.println("Permissions> Successfully queried mongo for '"+ permission + "' on tenant '"+
            //    tenant + "'");
            /*/* w ww .j  a  v  a2 s . c  o  m*/
            If there are no subpermissions, go ahead and complete the future with the
            given value of the JsonArray
                    
            If there are subpermissions, create a list of new futures, by calling
            walkPerms for each sub permission, then create a composite future from
            these new futures, with a handler that completes the original
            future when they return
            */
            JsonObject permObj = res.result().get(0);
            permList.add(permission);
            JsonArray subPerms = permObj.getJsonArray("sub_permissions");
            LinkedList<Future> futureList = new LinkedList<>();
            if (subPerms != null && !subPerms.isEmpty()) {
                logger.debug("Permissions> " + subPerms.size() + " subs to process for '" + permission + "'");
                for (Object o : subPerms) {
                    String sub = (String) o;
                    Future<JsonArray> newFuture = getExpandedPermissions(sub, tenant);
                    futureList.add(newFuture);
                }
                logger.debug("Permissions> Creating CompositeFuture to expand " + permission + " into "
                        + futureList.size() + " subs: " + subPerms.encode());
                CompositeFuture compositeFuture = CompositeFuture.all(futureList);
                compositeFuture.setHandler(res2 -> {
                    if (res2.succeeded()) {
                        //Get output of contained futures and complete the future here
                        for (Future f : futureList) {
                            JsonArray arr = (JsonArray) f.result();
                            for (Object o : arr) {
                                permList.add(o);
                            }
                        }
                        future.complete(permList);
                    } else {
                        future.fail("Unable to populate permissions: " + res2.cause().getMessage());
                    }
                });
            } else {
                //System.out.println("Permissions> No sub-permissions found for '" + permission + "'");
                future.complete(permList);
            }
        } else {
            future.fail("No permission '" + permission + "' found for tenant '" + tenant + "'");
        }
    });
    return future;
}

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