upgrade to jackson 2.8.0 and use DateTime for zendesk start times

There was a BUG in jackson FasterXML/jackson-databind#1124 fixed in 2.7.2.
In addition spring 4.3.0 officially claims compatibility with jackson 2.8.0

README.md

@@ -29,7 +29,7 @@ The *GoodData Java SDK* uses:
 * the [GoodData HTTP client](https://github.com/gooddata/gooddata-http-client) version 0.9.3 or later
 * the *Apache HTTP Client* version 4.3 or later (for white-labeled domains at least version 4.3.2 is required)
 * the *Spring Framework* version 4.3.*
-* the *Jackson JSON Processor* version 2.7.0 (*GoodData Java SDK* version 0.x requires version 1.9)
+* the *Jackson JSON Processor* version 2.8.*
 * the *Java Development Kit (JDK)* version 7 or later
 
 ## License

pom.xml

@@ -43,7 +43,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <httpclient.version>4.3.3</httpclient.version>
-        <jackson.version>2.7.0</jackson.version>
+        <jackson.version>2.8.0</jackson.version>
         <spring.version>4.3.1.RELEASE</spring.version>
         <jadler.version>1.1.1</jadler.version>
         <json-unit.version>1.5.3</json-unit.version>

src/main/java/com/gooddata/connector/Zendesk4ProcessExecution.java

@@ -8,10 +8,9 @@
 import static com.gooddata.util.Validate.notNull;
 
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import com.gooddata.util.ISODateTimeSerializer;
 import org.joda.time.DateTime;
-import org.joda.time.DateTimeZone;
-import org.joda.time.format.DateTimeFormatter;
-import org.joda.time.format.ISODateTimeFormat;
 
 import java.util.Map;
 import java.util.TreeMap;
@@ -21,11 +20,9 @@
  */
 public class Zendesk4ProcessExecution implements ProcessExecution {
 
-    private static final DateTimeFormatter FORMATTER = ISODateTimeFormat.dateTime().withZone(DateTimeZone.UTC);
-
     private Boolean incremental;
 
-    private Map<String, String> startTimes;
+    private Map<String, DateTime> startTimes;
 
     @Override
     public ConnectorType getConnectorType() {
@@ -41,7 +38,8 @@ public void setIncremental(final Boolean incremental) {
     }
 
     @JsonAnyGetter
-    public Map<String, String> getStartTimes() {
+    @JsonSerialize(contentUsing = ISODateTimeSerializer.class)
+    public Map<String, DateTime> getStartTimes() {
         return startTimes;
     }
 
@@ -50,8 +48,8 @@ public void setStartTime(final String resource, final DateTime startTime) {
         notEmpty(resource, "resource can't be empty");
         notNull(startTime, "startTime can't be null");
 
-        startTimes = startTimes == null ? new TreeMap<String, String>() : startTimes;
+        startTimes = startTimes == null ? new TreeMap<String, DateTime>() : startTimes;
 
-        startTimes.put(resource + "StartDate", FORMATTER.print(startTime));
+        startTimes.put(resource + "StartDate", startTime);
     }
 }