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authorAnton Tananaev <anton.tananaev@gmail.com>2019-03-31 22:35:39 -0700
committerAnton Tananaev <anton.tananaev@gmail.com>2019-03-31 22:35:39 -0700
commit59416923dcb3a756eaf532cc4259f2f6625c0762 (patch)
tree9082dae6616deac8fda432b7bfd80e4a52b6d9dc /src/main/java/org/traccar/geocoder/JsonGeocoder.java
parent79a129dd6327d932133d6b9a50190d3f4927bff9 (diff)
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Convert project to gradle
Diffstat (limited to 'src/main/java/org/traccar/geocoder/JsonGeocoder.java')
-rw-r--r--src/main/java/org/traccar/geocoder/JsonGeocoder.java121
1 files changed, 121 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/geocoder/JsonGeocoder.java b/src/main/java/org/traccar/geocoder/JsonGeocoder.java
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+/*
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
+ *
+ * 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 org.traccar.geocoder;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.traccar.Context;
+
+import javax.json.JsonObject;
+import javax.ws.rs.ClientErrorException;
+import javax.ws.rs.client.Invocation;
+import javax.ws.rs.client.InvocationCallback;
+import java.util.AbstractMap;
+import java.util.Collections;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+public abstract class JsonGeocoder implements Geocoder {
+
+ private static final Logger LOGGER = LoggerFactory.getLogger(JsonGeocoder.class);
+
+ private final String url;
+ private final AddressFormat addressFormat;
+
+ private Map<Map.Entry<Double, Double>, String> cache;
+
+ public JsonGeocoder(String url, final int cacheSize, AddressFormat addressFormat) {
+ this.url = url;
+ this.addressFormat = addressFormat;
+ if (cacheSize > 0) {
+ this.cache = Collections.synchronizedMap(new LinkedHashMap<Map.Entry<Double, Double>, String>() {
+ @Override
+ protected boolean removeEldestEntry(Map.Entry eldest) {
+ return size() > cacheSize;
+ }
+ });
+ }
+ }
+
+ private String handleResponse(
+ double latitude, double longitude, JsonObject json, ReverseGeocoderCallback callback) {
+
+ Address address = parseAddress(json);
+ if (address != null) {
+ String formattedAddress = addressFormat.format(address);
+ if (cache != null) {
+ cache.put(new AbstractMap.SimpleImmutableEntry<>(latitude, longitude), formattedAddress);
+ }
+ if (callback != null) {
+ callback.onSuccess(formattedAddress);
+ }
+ return formattedAddress;
+ } else {
+ String msg = "Empty address. Error: " + parseError(json);
+ if (callback != null) {
+ callback.onFailure(new GeocoderException(msg));
+ } else {
+ LOGGER.warn(msg);
+ }
+ }
+ return null;
+ }
+
+ @Override
+ public String getAddress(
+ final double latitude, final double longitude, final ReverseGeocoderCallback callback) {
+
+ if (cache != null) {
+ String cachedAddress = cache.get(new AbstractMap.SimpleImmutableEntry<>(latitude, longitude));
+ if (cachedAddress != null) {
+ if (callback != null) {
+ callback.onSuccess(cachedAddress);
+ }
+ return cachedAddress;
+ }
+ }
+
+ Invocation.Builder request = Context.getClient().target(String.format(url, latitude, longitude)).request();
+
+ if (callback != null) {
+ request.async().get(new InvocationCallback<JsonObject>() {
+ @Override
+ public void completed(JsonObject json) {
+ handleResponse(latitude, longitude, json, callback);
+ }
+
+ @Override
+ public void failed(Throwable throwable) {
+ callback.onFailure(throwable);
+ }
+ });
+ } else {
+ try {
+ return handleResponse(latitude, longitude, request.get(JsonObject.class), null);
+ } catch (ClientErrorException e) {
+ LOGGER.warn("Geocoder network error", e);
+ }
+ }
+ return null;
+ }
+
+ public abstract Address parseAddress(JsonObject json);
+
+ protected String parseError(JsonObject json) {
+ return null;
+ }
+
+}