gitlab4j#1023 Add Field Iteration to Issue.

src/main/java/org/gitlab4j/api/GroupApi.java

@@ -10,6 +10,7 @@
 
 import javax.ws.rs.core.Form;
 import javax.ws.rs.core.GenericType;
+import javax.ws.rs.core.MultivaluedMap;
 import javax.ws.rs.core.Response;
 
 import org.gitlab4j.api.GitLabApi.ApiVersion;
@@ -22,6 +23,8 @@
 import org.gitlab4j.api.models.GroupFilter;
 import org.gitlab4j.api.models.GroupParams;
 import org.gitlab4j.api.models.GroupProjectsFilter;
+import org.gitlab4j.api.models.Iteration;
+import org.gitlab4j.api.models.IterationFilter;
 import org.gitlab4j.api.models.LdapGroupLink;
 import org.gitlab4j.api.models.Member;
 import org.gitlab4j.api.models.Project;
@@ -1958,4 +1961,20 @@ public void deleteCustomAttribute(final Object groupIdOrPath, final String key)
 
         delete(Response.Status.OK, null, "groups", getGroupIdOrPath(groupIdOrPath), "custom_attributes", key);
     }
+
+    /**
+     * Lists group iterations.
+     *
+     * <pre><code>GitLab Endpoint: GET /groups/:id/iterations</code></pre>
+     *
+     * @param groupIdOrPath the group in the form of an Long(ID), String(path), or Group instance
+     * @param filter the iteration filter
+     * @return the list of group iterations
+     * @throws GitLabApiException if any exception occurs
+     */
+    public List<Iteration> listGroupIterations(Object groupIdOrPath, IterationFilter filter) throws GitLabApiException {
+        MultivaluedMap<String,String> queryParams = (filter == null) ? null : filter.getQueryParams().asMap();
+        Response response = get(Response.Status.OK, queryParams, "groups", getGroupIdOrPath(groupIdOrPath), "iterations");
+        return (response.readEntity(new GenericType<List<Iteration>>() { }));
+    }
 }

src/main/java/org/gitlab4j/api/ProjectApi.java

@@ -48,6 +48,8 @@
 import org.gitlab4j.api.models.Event;
 import org.gitlab4j.api.models.FileUpload;
 import org.gitlab4j.api.models.Issue;
+import org.gitlab4j.api.models.Iteration;
+import org.gitlab4j.api.models.IterationFilter;
 import org.gitlab4j.api.models.Member;
 import org.gitlab4j.api.models.Namespace;
 import org.gitlab4j.api.models.Project;
@@ -3999,4 +4001,19 @@ public void revokeProjectAccessToken(Object projectIdOrPath, Long tokenId) throw
         delete(Response.Status.NO_CONTENT, null, "projects", getProjectIdOrPath(projectIdOrPath), "access_tokens", tokenId);
     }
 
+    /**
+     * Lists project iterations.
+     *
+     * <pre><code>GitLab Endpoint: GET /projects/:id/iterations</code></pre>
+     *
+     * @param projectIdOrPath the project in the form of a Long(ID), String(path), or Project instance
+     * @param filter the iteration filter
+     * @return the list of project iterations
+     * @throws GitLabApiException if any exception occurs
+     */
+    public List<Iteration> listProjectIterations(Object projectIdOrPath, IterationFilter filter) throws GitLabApiException {
+        MultivaluedMap<String,String> queryParams = (filter == null) ? null : filter.getQueryParams().asMap();
+        Response response = get(Response.Status.OK, queryParams, "projects", getProjectIdOrPath(projectIdOrPath), "iterations");
+        return (response.readEntity(new GenericType<List<Iteration>>() { }));
+    }
 }

src/main/java/org/gitlab4j/api/models/AbstractIssue.java

@@ -78,6 +78,7 @@ public String toString() {
     private Integer mergeRequestsCount;
     private Boolean hasTasks;
     private String taskStatus;
+    private Iteration iteration;
     private TaskCompletionStatus taskCompletionStatus;
 
     public Assignee getAssignee() {
@@ -325,7 +326,15 @@ public void setTaskStatus(String taskStatus) {
         this.taskStatus = taskStatus;
     }
 
-    public TaskCompletionStatus getTaskCompletionStatus() {
+    public Iteration getIteration() {
+		return iteration;
+	}
+
+	public void setIteration(Iteration iteration) {
+		this.iteration = iteration;
+	}
+
+	public TaskCompletionStatus getTaskCompletionStatus() {
         return taskCompletionStatus;
     }
 

src/main/java/org/gitlab4j/api/models/Iteration.java

@@ -0,0 +1,129 @@
+package org.gitlab4j.api.models;
+
+import java.util.Date;
+
+import org.gitlab4j.api.utils.JacksonJson;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+
+public class Iteration {
+    public enum IterationState {
+        UPCOMMING(1), CURRENT(2), CLOSED(3);
+
+       private int value;
+
+        IterationState(int value) {
+            this.value = value;
+        }
+
+       @JsonCreator
+       public static IterationState fromIntValue(int value) {
+            for (IterationState it : values()) {
+                if(it.value == value) {
+                    return it;
+                }
+            }
+          throw new IllegalArgumentException("No enum found for value: " + value);
+       }
+
+       @JsonValue
+       public int toIntValue() {
+          return this.value;
+       }
+
+       @Override
+       public String toString() {
+          return name();
+       }
+    }
+
+    private Long id;
+    private Long iid;
+    private Long sequence;
+    private Long groupId;
+    private String title;
+    private String description;
+    private IterationState state;
+    private Date createdAt;
+    private Date updatedAt;
+    private Date startDate;
+    private Date dueDate;
+    private String webUrl;
+    public Long getId() {
+        return id;
+    }
+    public void setId(Long id) {
+        this.id = id;
+    }
+    public Long getIid() {
+        return iid;
+    }
+    public void setIid(Long iid) {
+        this.iid = iid;
+    }
+    public Long getSequence() {
+        return sequence;
+    }
+    public void setSequence(Long sequence) {
+        this.sequence = sequence;
+    }
+    public Long getGroupId() {
+        return groupId;
+    }
+    public void setGroupId(Long groupId) {
+        this.groupId = groupId;
+    }
+    public String getTitle() {
+        return title;
+    }
+    public void setTitle(String title) {
+        this.title = title;
+    }
+    public String getDescription() {
+        return description;
+    }
+    public void setDescription(String description) {
+        this.description = description;
+    }
+    public IterationState getState() {
+        return state;
+    }
+    public void setState(IterationState state) {
+        this.state = state;
+    }
+    public Date getCreatedAt() {
+        return createdAt;
+    }
+    public void setCreatedAt(Date createdAt) {
+        this.createdAt = createdAt;
+    }
+    public Date getUpdatedAt() {
+        return updatedAt;
+    }
+    public void setUpdatedAt(Date updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+    public Date getStartDate() {
+        return startDate;
+    }
+    public void setStartDate(Date startDate) {
+        this.startDate = startDate;
+    }
+    public Date getDueDate() {
+        return dueDate;
+    }
+    public void setDueDate(Date dueDate) {
+        this.dueDate = dueDate;
+    }
+    public String getWebUrl() {
+        return webUrl;
+    }
+    public void setWebUrl(String webUrl) {
+        this.webUrl = webUrl;
+    }
+    @Override
+    public String toString() {
+        return (JacksonJson.toJsonString(this));
+    }
+}