| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| package com.android.statementservice.retriever; |
| |
| import org.json.JSONObject; |
| |
| /** |
| * Factory to create asset from JSON string. |
| */ |
| /* package private */ final class AssetFactory { |
| |
| private static final String FIELD_NOT_STRING_FORMAT_STRING = "Expected %s to be string."; |
| |
| private AssetFactory() {} |
| |
| /** |
| * Checks that the input is a valid asset with purposes. |
| * |
| * @throws AssociationServiceException if the asset is not well formatted. |
| */ |
| public static AbstractAsset create(JSONObject asset) |
| throws AssociationServiceException { |
| String namespace = asset.optString(Utils.NAMESPACE_FIELD, null); |
| if (namespace == null) { |
| throw new AssociationServiceException(String.format( |
| FIELD_NOT_STRING_FORMAT_STRING, Utils.NAMESPACE_FIELD)); |
| } |
| |
| if (namespace.equals(Utils.NAMESPACE_WEB)) { |
| return WebAsset.create(asset); |
| } else if (namespace.equals(Utils.NAMESPACE_ANDROID_APP)) { |
| return AndroidAppAsset.create(asset); |
| } else { |
| throw new AssociationServiceException("Namespace " + namespace + " is not supported."); |
| } |
| } |
| } |