2 * Copyright (c) 2015 Samsung Electronics Co., Ltd All Rights Reserved
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #include "content/content_filter.h"
21 #include "common/converter.h"
22 #include "common/logger.h"
24 using common::AttributeMatchFlag;
25 using common::CompositeFilterType;
26 using common::ErrorCode;
27 using common::JsonCast;
28 using common::PlatformResult;
35 std::map<std::string, std::string> const attributeNameMap = {
37 {"type", "MEDIA_TYPE"},
38 {"mimeType", "MEDIA_MIME_TYPE"},
39 {"name", "MEDIA_DISPLAY_NAME"},
40 {"title", "MEDIA_TITLE"},
41 {"contentURI", "MEDIA_PATH"},
42 {"thumbnailURIs", "MEDIA_THUMBNAIL_PATH"},
43 {"description", "MEDIA_DESCRIPTION"},
44 {"rating", "MEDIA_RATING"},
45 {"createdDate", "MEDIA_ADDED_TIME"},
46 {"releaseDate", "MEDIA_DATETAKEN"},
47 {"modifiedDate", "MEDIA_MODIFIED_TIME"},
48 {"geolocation.latitude", "MEDIA_LATITUDE"},
49 {"geolocation.longitude", "MEDIA_LONGITUDE"},
50 {"duration", "MEDIA_DURATION"},
51 {"album", "MEDIA_ALBUM"},
52 {"artists", "MEDIA_ARTIST"},
53 {"width", "MEDIA_WIDTH"},
54 {"height", "MEDIA_HEIGHT"},
55 {"genres", "MEDIA_GENRE"},
56 {"size", "MEDIA_SIZE"},
59 std::string escapeValueString(const std::string& data) {
62 // If string won't be resized, then it will be faster
63 out.reserve(data.size());
83 PlatformResult ContentFilter::MapField(const std::string& name,
84 std::string* result) {
86 auto it = attributeNameMap.find(name);
87 if (it != attributeNameMap.end())
91 LoggerE("INVALID_VALUES_ERR");
92 return PlatformResult(ErrorCode::INVALID_VALUES_ERR);
94 return PlatformResult(ErrorCode::NO_ERROR);
97 PlatformResult ContentFilter::BuildQuery(const picojson::object& jsFilter,
98 std::string* queryToCall) {
100 std::vector<std::vector<std::string> > partialqueries;
101 partialqueries.push_back(std::vector<std::string>());
103 visitor.SetOnAttributeFilter([&](const std::string& name,
104 AttributeMatchFlag match_flag,
105 const picojson::value& match_value) {
106 LoggerD("entered OnAttributeFilter");
108 PlatformResult result = PlatformResult(ErrorCode::NO_ERROR);
111 std::string matchValue;
113 result = MapField(name, &query);
117 if (AttributeMatchFlag::kExactly == match_flag ||
118 AttributeMatchFlag::kFullString == match_flag) {
120 } else if (AttributeMatchFlag::kContains == match_flag ||
121 AttributeMatchFlag::kStartsWith == match_flag ||
122 AttributeMatchFlag::kEndsWith == match_flag) {
124 } else if (AttributeMatchFlag::kExists == match_flag) {
125 query += " IS NOT NULL ";
127 LoggerE("INVALID_VALUES_ERR");
128 return PlatformResult(ErrorCode::INVALID_VALUES_ERR);
130 if (AttributeMatchFlag::kExists != match_flag) {
132 matchValue = escapeValueString(JsonCast<std::string>(match_value));
133 if (name == "type") {
134 if (matchValue == "IMAGE") {
136 } else if (matchValue == "VIDEO") {
138 } else if (matchValue == "AUDIO") {
143 } else if (name == "contentURI") {
144 const char* uri_prefix = "file://";
145 size_t found = matchValue.find(uri_prefix);
146 if (found != std::string::npos) {
147 //simple convertion of URI to globalpath
148 matchValue = matchValue.substr(found + strlen(uri_prefix));
151 switch (match_flag) {
152 case AttributeMatchFlag::kStartsWith :
153 query += matchValue + "%";
155 case AttributeMatchFlag::kEndsWith :
156 query += "%" + matchValue;
158 case AttributeMatchFlag::kContains :
159 query += "%" + matchValue + "%";
167 partialqueries.back().push_back(query);
172 visitor.SetOnCompositeFilterBegin([&](CompositeFilterType type) {
173 LoggerD("entered OnCompositeFilterBegin");
174 partialqueries.push_back(std::vector<std::string>());
175 return PlatformResult(ErrorCode::NO_ERROR);
178 visitor.SetOnCompositeFilterEnd([&](CompositeFilterType calType) {
179 LoggerD("entered OnCompositeFilterEnd");
180 std::string finalQuery;
181 std::string separator;
183 if (CompositeFilterType::kUnion == calType)
188 if (partialqueries.back().empty()) {
189 partialqueries.pop_back();
190 return PlatformResult(ErrorCode::NO_ERROR);
192 if (partialqueries.back().size() != 1)
193 finalQuery.append("(");
195 for (unsigned long i = 0; i < partialqueries.back().size(); i++) {
196 finalQuery += partialqueries.back().at(i);
197 if (i != partialqueries.back().size() - 1) {
198 finalQuery += separator;
202 if (partialqueries.back().size() != 1)
203 finalQuery.append(")");
204 partialqueries.pop_back();
205 partialqueries.back().push_back(finalQuery);
207 return PlatformResult(ErrorCode::NO_ERROR);
210 visitor.SetOnAttributeRangeFilter([&](const std::string& name,
211 const picojson::value& initial_value,
212 const picojson::value& end_value) {
213 LoggerD("entered OnAttributeFilter");
215 PlatformResult result = PlatformResult(ErrorCode::NO_ERROR);
216 std::string query = "";
217 std::string paramName;
218 result = MapField(name, ¶mName);
222 std::string initialValue = escapeValueString(JsonCast<std::string>(initial_value));
223 std::string endValue = escapeValueString(JsonCast<std::string>(end_value));
226 query += initialValue;
232 partialqueries.back().push_back(query);
237 if (!visitor.Visit(jsFilter)) {
238 LoggerE("INVALID_VALUES_ERR");
239 return PlatformResult(ErrorCode::INVALID_VALUES_ERR);
242 if (partialqueries.empty()) {
243 LoggerE("Filter parsing error!");
244 return PlatformResult(ErrorCode::SYNTAX_ERR);
246 if (partialqueries.back().empty()) {
247 LoggerD("Resolved to empty string!");
249 return PlatformResult(ErrorCode::NO_ERROR);
252 *queryToCall = partialqueries.back().front();
253 return PlatformResult(ErrorCode::NO_ERROR);
256 } // namespace content
257 } // namespace extension