Issue #90: Add class Query

Foi criado a classe Query para susbstituir a interface que possuia o mesmo nome. A interface agora renomeada para queryOpts sera utilizada no construtor da classe, src/common/query.ts.

Testes foram modificados para a nova definição da classe query em:src/util/graph.spec.ts, src/util/viewHandler.ts, test/scenario.ts.

Removido as validações em:src/core/engine.ts, src/util/graph.ts, src/util/viewHandler.ts.

Signed-off-by: rafaelatc3sl rpd17@c3sl

src/common/query.ts

@@ -38,21 +38,21 @@ export interface QueryOpts {
 
 export class Query {
     /** Set of metrics of the query. */
-    public metrics: Metric[];
+    public readonly metrics: Metric[];
     /** Set of dimensions of the query. */
-    public dimensions: Dimension[];
+    public readonly dimensions: Dimension[];
     /** Set of clauses of the query. */
-    public clauses: Clause[];
+    public readonly clauses: Clause[];
     /** List of metrics and dimensions to sort the query. */
-    public sort: (Metric|Dimension)[];
+    public readonly sort: (Metric|Dimension)[];
     /**
      * Create Query
      * @param opts - Parameters required to create a query.
      */
     constructor(opts: QueryOpts){
-        this.metrics = opts.metrics;
-        this.dimensions = opts.dimensions;
-        this.clauses = (opts.clauses) ? opts.clauses : [];
-        this.sort = (opts.sort) ? opts.sort : [];
+        this.metrics = opts.metrics.map((i) => i);
+        this.dimensions = opts.dimensions.map((i) => i);
+        this.clauses = (opts.clauses) ? opts.clauses.map((i) => i) : [];
+        this.sort = (opts.sort) ? opts.sort.map((i) => i) : [];
     }
 }