[HWORKS-987] model version id should be monotonically increasing (#1706)

hopsworks-api/src/main/java/io/hops/hopsworks/api/modelregistry/models/ModelsBuilder.java

@@ -86,7 +86,7 @@ public ModelDTO uri(ModelDTO dto, UriInfo uriInfo, Project userProject, Project
       .path(ResourceRequest.Name.MODELREGISTRIES.toString().toLowerCase())
       .path(Integer.toString(modelRegistryProject.getId()))
       .path(ResourceRequest.Name.MODELS.toString().toLowerCase())
-      .path(modelVersion.getModel().getName() + "_" + modelVersion.getModelVersionPK().getVersion())
+      .path(modelVersion.getModel().getName() + "_" + modelVersion.getVersion())
       .build());
     return dto;
   }
@@ -145,9 +145,9 @@ public ModelDTO build(UriInfo uriInfo,
     ModelDTO modelDTO = new ModelDTO();
     uri(modelDTO, uriInfo, userProject, modelRegistryProject, modelVersion);
     if (expand(modelDTO, resourceRequest).isExpand()) {
-      modelDTO.setId(modelVersion.getModel().getName() + "_" + modelVersion.getModelVersionPK().getVersion());
+      modelDTO.setId(modelVersion.getModel().getName() + "_" + modelVersion.getVersion());
       modelDTO.setName(modelVersion.getModel().getName());
-      modelDTO.setVersion(modelVersion.getModelVersionPK().getVersion());
+      modelDTO.setVersion(modelVersion.getVersion());
       modelDTO.setUserFullName(modelVersion.getUserFullName());
       modelDTO.setCreated(modelVersion.getCreated().getTime());
       modelDTO.setMetrics(modelVersion.getMetrics().getAttributes());
@@ -162,8 +162,7 @@ public ModelDTO build(UriInfo uriInfo,
       modelDTO.setCreator(usersBuilder.build(uriInfo, resourceRequest, modelVersion.getCreator()));
 
       DatasetPath modelDsPath = datasetHelper.getDatasetPath(userProject,
-        modelUtils.getModelFullPath(modelRegistryProject, modelVersion.getModel().getName(),
-          modelVersion.getModelVersionPK().getVersion()),
+        modelUtils.getModelFullPath(modelRegistryProject, modelVersion.getModel().getName(), modelVersion.getVersion()),
         DatasetType.DATASET);
       ModelRegistryTagUri tagUri = new ModelRegistryTagUri(uriInfo, modelRegistryProject,
         ResourceRequest.Name.MODELS, modelDTO.getId());

hopsworks-api/src/main/java/io/hops/hopsworks/api/modelregistry/models/ModelsController.java

@@ -51,7 +51,6 @@
 import io.hops.hopsworks.persistence.entity.models.Model;
 import io.hops.hopsworks.persistence.entity.models.version.Metrics;
 import io.hops.hopsworks.persistence.entity.models.version.ModelVersion;
-import io.hops.hopsworks.persistence.entity.models.version.ModelVersionPK;
 import io.hops.hopsworks.persistence.entity.project.Project;
 import io.hops.hopsworks.persistence.entity.user.Users;
 import io.hops.hopsworks.restutils.RESTCodes;
@@ -123,10 +122,8 @@ public ModelVersion createModelVersion(ModelsController.Accessor accessor, Model
     modelVersion.setExperimentProjectName(modelDTO.getExperimentProjectName());
     modelVersion.setCreator(accessor.user);
 
-    ModelVersionPK modelVersionPK = new ModelVersionPK();
-    modelVersionPK.setVersion(modelDTO.getVersion());
-    modelVersionPK.setModelId(model.getId());
-    modelVersion.setModelVersionPK(modelVersionPK);
+    modelVersion.setVersion(modelDTO.getVersion());
+    modelVersion.setModel(model);
 
     //Only attach program and environment if exporting inside Hopsworks
     if (!Strings.isNullOrEmpty(jobName) || !Strings.isNullOrEmpty(kernelId)) {
@@ -164,7 +161,7 @@ public void delete(Users user, Project userProject, Project parentProject, Model
 
       String modelPath = Utils.getProjectPath(userProject.getName())
         + parentProject.getName() + "::" + Settings.HOPS_MODELS_DATASET + "/" + modelVersion.getModel().getName()
-        + "/" + modelVersion.getModelVersionPK().getVersion();
+        + "/" + modelVersion.getVersion();
       deleteInternal(user, userProject, modelPath, modelVersion);
     }
   }
@@ -174,8 +171,7 @@ public void delete(Users user, Project project, ModelVersion modelVersion) throw
     verifyNoModelDeployments(project, modelVersion);
 
     String modelPath = Utils.getProjectPath(project.getName())
-      + Settings.HOPS_MODELS_DATASET + "/" + modelVersion.getModel().getName() + "/"
-      + modelVersion.getModelVersionPK().getVersion();
+      + Settings.HOPS_MODELS_DATASET + "/" + modelVersion.getModel().getName() + "/" + modelVersion.getVersion();
     deleteInternal(user, project, modelPath, modelVersion);
   }
 

hopsworks-api/src/main/java/io/hops/hopsworks/api/modelregistry/models/ModelsResource.java

@@ -231,7 +231,7 @@ public Response put(@PathParam("id") String id,
       ModelVersion modelVersion = modelsController.createModelVersion(accessor, modelDTO, jobName, kernelId);
       ModelDTO dto = modelsBuilder.build(uriInfo, new ResourceRequest(ResourceRequest.Name.MODELS), user, userProject,
         modelRegistryProject, modelVersion, modelUtils.getModelFullPath(modelProject, modelVersion.getModel().getName(),
-          modelVersion.getModelVersionPK().getVersion()));
+          modelVersion.getVersion()));
       UriBuilder builder = uriInfo.getAbsolutePathBuilder().path(id);
       return Response.created(builder.build()).entity(dto).build();
     } finally {

hopsworks-api/src/main/java/io/hops/hopsworks/api/modelregistry/models/tags/ModelTagResource.java

@@ -52,7 +52,7 @@ public void setModel(ModelVersion modelVersion) {
   @Override
   protected DatasetPath getDatasetPath() throws DatasetException {
     return datasetHelper.getDatasetPath(project, modelUtils.getModelFullPath(modelRegistry,
-      modelVersion.getModel().getName(), modelVersion.getModelVersionPK().getVersion()), DatasetType.DATASET);
+      modelVersion.getModel().getName(), modelVersion.getVersion()), DatasetType.DATASET);
   }
 
   @Override

hopsworks-common/src/main/java/io/hops/hopsworks/common/featurestore/featuregroup/EmbeddingFeatureDTO.java

@@ -46,7 +46,7 @@ public EmbeddingFeatureDTO(EmbeddingFeature feature) {
           // model registry id is same as project id
           feature.getModelVersion().getModel().getProject().getId(),
           feature.getModelVersion().getModel().getName(),
-          feature.getModelVersion().getModelVersionPK().getVersion());
+          feature.getModelVersion().getVersion());
     }
   }
 }

hopsworks-persistence/src/main/java/io/hops/hopsworks/persistence/entity/featurestore/featuregroup/EmbeddingFeature.java

@@ -25,7 +25,6 @@
 import javax.persistence.GenerationType;
 import javax.persistence.Id;
 import javax.persistence.JoinColumn;
-import javax.persistence.JoinColumns;
 import javax.persistence.OneToOne;
 import javax.persistence.Table;
 import javax.xml.bind.annotation.XmlRootElement;
@@ -47,9 +46,7 @@ public class EmbeddingFeature {
   private Integer dimension;
   @Column(name = "similarity_function_type")
   private String similarityFunctionType;
-  @JoinColumns({
-      @JoinColumn(name = "hsml_model_version", referencedColumnName = "version"),
-      @JoinColumn(name = "hsml_model_id", referencedColumnName = "model_id")})
+  @JoinColumn(name = "model_version_id", referencedColumnName = "id")
   @OneToOne
   private ModelVersion modelVersion;
 

hopsworks-persistence/src/main/java/io/hops/hopsworks/persistence/entity/models/version/ModelVersion.java

@@ -22,8 +22,10 @@
 import javax.persistence.Basic;
 import javax.persistence.Column;
 import javax.persistence.Convert;
-import javax.persistence.EmbeddedId;
 import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
 import javax.persistence.JoinColumn;
 import javax.persistence.ManyToOne;
 import javax.persistence.NamedQueries;
@@ -36,6 +38,7 @@
 import javax.xml.bind.annotation.XmlRootElement;
 import java.io.Serializable;
 import java.util.Date;
+import java.util.Objects;
 
 /**
  * A ModelVersion is an instance of a Model.
@@ -48,22 +51,27 @@
     query = "SELECT mv FROM ModelVersion mv"),
   @NamedQuery(name = "ModelVersion.findByProjectAndMlId",
     query
-      = "SELECT mv FROM ModelVersion mv WHERE mv.modelVersionPK.version = :version" +
-      " AND mv.modelVersionPK.modelId = :modelId")
+      = "SELECT mv FROM ModelVersion mv WHERE mv.version = :version" +
+      " AND mv.model.id = :modelId")
   }
 )
 public class ModelVersion implements Serializable {
 
   private static final long serialVersionUID = 1L;
 
-  @EmbeddedId
-  private ModelVersionPK modelVersionPK;
+  @Id
+  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  @Basic(optional = false)
+  @Column(name = "id")
+  private Integer id;
+
+  @Basic(optional = false)
+  @Column(name = "version")
+  private Integer version;
 
   @ManyToOne(optional = false)
   @JoinColumn(name = "model_id",
-              referencedColumnName = "id",
-              insertable = false,
-              updatable = false)
+              referencedColumnName = "id")
   private Model model;
 
   @JoinColumn(name = "user_id",
@@ -108,6 +116,14 @@ public class ModelVersion implements Serializable {
   public ModelVersion() {
   }
 
+  public Integer getVersion() {
+    return version;
+  }
+
+  public void setVersion(Integer version) {
+    this.version = version;
+  }
+
   public Metrics getMetrics() {
     return metrics;
   }
@@ -176,14 +192,6 @@ public void setExperimentProjectName(String experimentProjectName) {
     this.experimentProjectName = experimentProjectName;
   }
 
-  public ModelVersionPK getModelVersionPK() {
-    return modelVersionPK;
-  }
-
-  public void setModelVersionPK(ModelVersionPK modelVersionPK) {
-    this.modelVersionPK = modelVersionPK;
-  }
-
   public Model getModel() {
     return model;
   }
@@ -193,7 +201,7 @@ public void setModel(Model model) {
   }
 
   public String getMlId() {
-    return model.getName() + "_" + modelVersionPK.getVersion();
+    return model.getName() + "_" + version;
   }
 
   public Users getCreator() {
@@ -206,9 +214,7 @@ public void setCreator(Users creator) {
 
   @Override
   public int hashCode() {
-    int hash = 0;
-    hash += (getModelVersionPK() != null ? getModelVersionPK().hashCode() : 0);
-    return hash;
+    return Objects.hash(id);
   }
 
   @Override
@@ -218,8 +224,7 @@ public boolean equals(Object object) {
       return false;
     }
     ModelVersion other = (ModelVersion) object;
-    if ((this.getModelVersionPK() == null && other.getModelVersionPK() != null) ||
-      (this.getModelVersionPK() != null && !this.getModelVersionPK().equals(other.getModelVersionPK()))) {
+    if ((this.id == null && other.id != null) || (this.id != null && !Objects.equals(id, other.id))) {
       return false;
     }
     return true;