[ADF-2150] improved queryBody mechanism (#2852)

* [ADF-2150] changed query body parameter to a function

* [ADF-2150] added an example page where to try change query body

* [ADF-2150] improved queryBody mechanism

* [ADF-2150] fixed content node test

* [ADF-2150] extended docs added another way to use the query node

* [ADF-2150] fixed test for search on content node

* [ADF-2150] added some improvements to service config

* [ADF-2150] changed the documentation accordingly

* [ADF-2150] added PR changes

* [ADF-2150] fixed jdoc

* [ADF-2150] added checkbox to switch from service approach to input object approach

* [ADF-2150] fixed build error on demo shell

lib/core/services/search-configuration.service.ts

@@ -0,0 +1,45 @@
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { Injectable } from '@angular/core';
+import { QueryBody } from 'alfresco-js-api';
+import { SearchConfigurationInterface } from '../interface/search-configuration.interface';
+
+@Injectable()
+export class SearchConfigurationService implements SearchConfigurationInterface {
+
+    constructor() {
+    }
+
+    public generateQueryBody(searchTerm: string, maxResults: string, skipCount: string): QueryBody {
+        let defaultQueryBody: QueryBody = {
+            query: {
+                query: searchTerm ? `${searchTerm}* OR name:${searchTerm}*` : searchTerm
+            },
+            include: ['path', 'allowableOperations'],
+            paging: {
+                maxItems: maxResults,
+                skipCount: skipCount
+            },
+            filterQueries: [
+                { query: "TYPE:'cm:folder' OR TYPE:'cm:content'" },
+                { query: 'NOT cm:creator:System' }]
+        };
+
+        return defaultQueryBody;
+    }
+}