Fix returning properties for new recommendation endpoints (#3)

Author: OndraFiedler

README.md

@@ -13,7 +13,7 @@ The client is available in the [Maven Central Repository](https://mvnrepository.
     <dependency>
         <groupId>com.recombee</groupId>
         <artifactId>api-client</artifactId>
-        <version>2.0.0</version>
+        <version>2.0.1</version>
     </dependency>
 ```
 

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.recombee</groupId>
     <artifactId>api-client</artifactId>
-    <version>2.0.0</version>
+    <version>2.0.1</version>
     <name>Recombee API Client</name>
     <description>A client library for easy use of the Recombee recommendation API</description>
     <url>http://recombee.com</url>

src/main/java/com/recombee/api_client/RecombeeClient.java

@@ -85,7 +85,7 @@ public class RecombeeClient {
 
     final int BATCH_MAX_SIZE = 10000; //Maximal number of requests within one batch request
 
-    final String USER_AGENT = "recombee-java-api-client/2.0.0";
+    final String USER_AGENT = "recombee-java-api-client/2.0.1";
 
     private final OkHttpClient httpClient = new OkHttpClient();
 

src/main/java/com/recombee/api_client/bindings/Recommendation.java

@@ -12,7 +12,6 @@ public class Recommendation extends RecombeeBinding {
     * Property values of the recommended item (only if the recommendation requested was set to return property values)
     */
     protected Map<String, Object> values;
-    protected boolean valuesAreSet;
 
     public Recommendation() {}
 
@@ -25,7 +24,6 @@ public Recommendation(String id, Map<String, Object> values)
     {
         this.id = id;
         this.values = values;
-        this.valuesAreSet = true;
     }
 
     public String getId() {
@@ -34,7 +32,7 @@ public String getId() {
 
     public Map<String, Object> getValues() {
 
-        if(!this.valuesAreSet)
+        if(values == null)
             throw new IllegalStateException("getValues() is possible only if the recommendation requested was set to return property values (invoke setReturnProperties(true))");
 
         return this.values;