added squashOption to Project

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

@@ -850,6 +850,29 @@ public String toString() {
         }
     }
 
+    /** Enum for the build_git_strategy of the project instance. */
+    enum SquashOption {
+
+        NEVER, ALWAYS, DEFAULT_ON, DEFAULT_OFF;
+
+        private static JacksonJsonEnumHelper<SquashOption> enumHelper = new JacksonJsonEnumHelper<>(SquashOption.class);
+
+        @JsonCreator
+        public static SquashOption forValue(String value) {
+            return enumHelper.forValue(value);
+        }
+
+        @JsonValue
+        public String toValue() {
+            return (enumHelper.toString(this));
+        }
+
+        @Override
+        public String toString() {
+            return (enumHelper.toString(this));
+        }
+    }
+
     /** Enum for the build_git_strategy of the project instance. */
     enum BuildGitStrategy {
 

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

@@ -238,7 +238,8 @@ public ImportStatus startImport(Object namespaceIdOrPath, File exportFile, Strin
                 .withParam("initialize_with_readme", overrideParams.getInitializeWithReadme())
                 .withParam("packages_enabled", overrideParams.getPackagesEnabled())
                 .withParam("build_git_strategy", overrideParams.getBuildGitStrategy())
-                .withParam("build_coverage_regex", overrideParams.getBuildCoverageRegex());
+                .withParam("build_coverage_regex", overrideParams.getBuildCoverageRegex())
+                .withParam("squash_option", overrideParams.getSquashOption());
         }
 
         Response response = upload(Response.Status.CREATED, "file", exportFile, null, formData, url);

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

@@ -924,7 +924,7 @@ public Project createProject(String projectName) throws GitLabApiException {
      * @throws GitLabApiException if any exception occurs
      */
     public Project createProject(String name, String path) throws GitLabApiException {
-	
+
 	if ((name == null || name.trim().isEmpty()) && (path == null || path.trim().isEmpty())) {
 	    throw new RuntimeException("Either name or path must be specified.");
 	}
@@ -976,6 +976,7 @@ public Project createProject(Project project) throws GitLabApiException {
      * packagesEnabled (optional) - Enable or disable mvn packages repository feature
      * buildGitStrategy (optional) - set the build git strategy
      * buildCoverageRegex (optional) - set build coverage regex
+     * squashOption (optional) - set squash option for merge requests
      *
      * @param project the Project instance with the configuration for the new project
      * @param importUrl the URL to import the repository from
@@ -1024,7 +1025,8 @@ public Project createProject(Project project, String importUrl) throws GitLabApi
             .withParam("build_git_strategy", project.getBuildGitStrategy())
             .withParam("build_coverage_regex", project.getBuildCoverageRegex())
             .withParam("suggestion_commit_message", project.getSuggestionCommitMessage())
-            .withParam("remove_source_branch_after_merge", project.getRemoveSourceBranchAfterMerge());
+            .withParam("remove_source_branch_after_merge", project.getRemoveSourceBranchAfterMerge())
+            .withParam("squash_option", project.getSquashOption());
 
         Namespace namespace = project.getNamespace();
         if (namespace != null && namespace.getId() != null) {
@@ -1222,6 +1224,7 @@ public Project createProject(String name, Integer namespaceId, String descriptio
      * packagesEnabled (optional) - Enable or disable mvn packages repository feature
      * buildGitStrategy (optional) - set the build git strategy
      * buildCoverageRegex (optional) - set build coverage regex
+     * squashOption (optional) - set squash option for merge requests
      *
      * NOTE: The following parameters specified by the GitLab API edit project are not supported:
      *     import_url
@@ -1270,7 +1273,8 @@ public Project updateProject(Project project) throws GitLabApiException {
             .withParam("build_coverage_regex", project.getBuildCoverageRegex())
             .withParam("merge_method", project.getMergeMethod())
             .withParam("suggestion_commit_message", project.getSuggestionCommitMessage())
-            .withParam("remove_source_branch_after_merge", project.getRemoveSourceBranchAfterMerge());
+            .withParam("remove_source_branch_after_merge", project.getRemoveSourceBranchAfterMerge())
+            .withParam("squash_option", project.getSquashOption());
 
         if (isApiVersion(ApiVersion.V3)) {
             formData.withParam("visibility_level", project.getVisibilityLevel());

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

@@ -6,6 +6,7 @@
 
 import org.gitlab4j.api.Constants.AutoDevopsDeployStrategy;
 import org.gitlab4j.api.Constants.BuildGitStrategy;
+import org.gitlab4j.api.Constants.SquashOption;
 import org.gitlab4j.api.ProjectLicense;
 import org.gitlab4j.api.models.ImportStatus.Status;
 import org.gitlab4j.api.utils.JacksonJson;
@@ -105,6 +106,7 @@ public String toString() {
     private Boolean autocloseReferencedIssues;
     private Boolean emailsDisabled;
     private String suggestionCommitMessage;
+    private SquashOption squashOption;
 
     @JsonSerialize(using = JacksonJson.DateOnlySerializer.class)
     private Date markedForDeletionOn;
@@ -842,4 +844,17 @@ public Project withSuggestionCommitMessage(String suggestionCommitMessage) {
     public void setSuggestionCommitMessage(String suggestionCommitMessage) {
         this.suggestionCommitMessage = suggestionCommitMessage;
     }
+
+    public SquashOption getSquashOption() {
+        return squashOption;
+    }
+
+    public void setSquashOption(SquashOption squashOption) {
+        this.squashOption = squashOption;
+    }
+
+    public Project withSquashOption(SquashOption squashOption) {
+        this.squashOption = squashOption;
+        return this;
+    }
 }