1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.statementservice.retriever; 18 19 import org.json.JSONException; 20 import org.json.JSONObject; 21 22 /** 23 * Factory to create asset matcher from JSON string. 24 */ 25 /* package private */ final class AssetMatcherFactory { 26 27 private static final String FIELD_NOT_STRING_FORMAT_STRING = "Expected %s to be string."; 28 private static final String NAMESPACE_NOT_SUPPORTED_STRING = "Namespace %s is not supported."; 29 30 public static AbstractAssetMatcher create(String query) throws AssociationServiceException, 31 JSONException { 32 JSONObject queryObject = new JSONObject(query); 33 34 String namespace = queryObject.optString(Utils.NAMESPACE_FIELD, null); 35 if (namespace == null) { 36 throw new AssociationServiceException(String.format( 37 FIELD_NOT_STRING_FORMAT_STRING, Utils.NAMESPACE_FIELD)); 38 } 39 40 if (namespace.equals(Utils.NAMESPACE_WEB)) { 41 return new WebAssetMatcher(WebAsset.create(queryObject)); 42 } else if (namespace.equals(Utils.NAMESPACE_ANDROID_APP)) { 43 return new AndroidAppAssetMatcher(AndroidAppAsset.create(queryObject)); 44 } else { 45 throw new AssociationServiceException( 46 String.format(NAMESPACE_NOT_SUPPORTED_STRING, namespace)); 47 } 48 } 49 } 50
