Remove target type to target reference (#1771)

it is not used and could lead to extensive memory usage if JPA provider load targets while loading types

Signed-off-by: Marinov Avgustin <Avgustin.Marinov@bosch.com>

hawkbit-repository/hawkbit-repository-jpa/src/main/java/org/eclipse/hawkbit/repository/jpa/management/JpaTargetTypeManagement.java

@@ -166,30 +166,6 @@ public class JpaTargetTypeManagement implements TargetTypeManagement {
         return targetTypeRepository.findById(id).map(TargetType.class::cast);
     }
 
-    @Override
-    public Optional<TargetType> findByTargetId(final long targetId) {
-        return targetTypeRepository.findOne(TargetTypeSpecification.hasTarget(targetId)).map(TargetType.class::cast);
-    }
-
-    @Override
-    public List<TargetType> findByTargetIds(final Collection<Long> targetIds) {
-        return targetTypeRepository
-                .findAll(TargetTypeSpecification.hasTarget(targetIds)).stream().map(TargetType.class::cast).toList();
-    }
-
-    @Override
-    public Optional<TargetType> findByTargetControllerId(final String controllerId) {
-        return targetTypeRepository
-                .findOne(TargetTypeSpecification.hasTargetControllerId(controllerId)).map(TargetType.class::cast);
-    }
-
-    @Override
-    public List<TargetType> findByTargetControllerIds(final Collection<String> controllerIds) {
-        return targetTypeRepository
-                .findAll(TargetTypeSpecification.hasTargetControllerIdIn(controllerIds))
-                .stream().map(TargetType.class::cast).toList();
-    }
-
     @Override
     public List<TargetType> get(final Collection<Long> ids) {
         return Collections.unmodifiableList(targetTypeRepository.findAllById(ids));

hawkbit-repository/hawkbit-repository-jpa/src/main/java/org/eclipse/hawkbit/repository/jpa/model/JpaTargetType.java

@@ -9,6 +9,8 @@
  */
 package org.eclipse.hawkbit.repository.jpa.model;
 
+import lombok.NoArgsConstructor;
+import lombok.ToString;
 import org.eclipse.hawkbit.repository.event.remote.TargetTypeDeletedEvent;
 import org.eclipse.hawkbit.repository.event.remote.entity.TargetTypeCreatedEvent;
 import org.eclipse.hawkbit.repository.event.remote.entity.TargetTypeUpdatedEvent;
@@ -38,8 +40,9 @@ import java.util.Set;
 /**
  * A target type defines which distribution set types can or have to be
  * {@link Target}.
- *
  */
+@NoArgsConstructor // default public constructor for JPA
+@ToString(callSuper = true)
 @Entity
 @Table(name = "sp_target_type", indexes = {
         @Index(name = "sp_idx_target_type_prim", columnList = "tenant,id") }, uniqueConstraints = {
@@ -56,79 +59,46 @@ public class JpaTargetType extends AbstractJpaTypeEntity implements TargetType,
             @JoinColumn(name = "distribution_set_type", nullable = false, updatable = false, foreignKey = @ForeignKey(value = ConstraintMode.CONSTRAINT, name = "fk_target_type_relation_ds_type"))})
     private Set<DistributionSetType> distributionSetTypes;
 
-    @OneToMany(targetEntity = JpaTarget.class, mappedBy = "targetType", fetch = FetchType.LAZY)
-    private Set<Target> targets;
-
-    /**
-     * Constructor
-     */
-    public JpaTargetType() {
-        // default public constructor for JPA
-    }
-
-    /**
-     * Constructor, legacy support where <code>key</code> is set to passed <code>name</code>.
-     *
-     * @deprecated will be removed
-     *
-     * @param name
-     *            of the type
-     * @param description
-     *            of the type
-     * @param colour
-     *            of the type
-     */
-    @Deprecated(forRemoval = true)
-    public JpaTargetType(final String name, final String description, final String colour) {
-        this(name, name, description, colour);
-    }
-
-    /**
-     * Constructor.
-     *
-     * @param key
-     *            of the type
-     * @param name
-     *            of the type
-     * @param description
-     *            of the type
-     * @param colour
-     *            of the type. It will be null by default
-     */
     public JpaTargetType(final String key, final String name, final String description, final String colour) {
         super(name, description, key, colour);
     }
 
     /**
-     * @param dsSetType
-     *          Distribution set type
+     * Adds a compatible distribution set type to this target type.
+     *
+     * @param dsSetType Distribution set type to add
      * @return Target type
      */
-    public void addCompatibleDistributionSetType(final DistributionSetType dsSetType) {
+    public JpaTargetType addCompatibleDistributionSetType(final DistributionSetType dsSetType) {
         if (distributionSetTypes == null) {
             distributionSetTypes = new HashSet<>();
         }
 
         distributionSetTypes.add(dsSetType);
+
+        return this;
     }
 
     /**
-     * @param dsTypeId
-     *          Distribution set type ID
+     * Remove a compatible distribution set type from this target type.
+     * @param dsTypeId Distribution set type ID
      * @return Target type
      */
     public JpaTargetType removeDistributionSetType(final Long dsTypeId) {
         if (distributionSetTypes == null) {
             return this;
         }
-        distributionSetTypes.stream().filter(element -> element.getId().equals(dsTypeId)).findAny()
+
+        distributionSetTypes.stream()
+                .filter(element -> element.getId().equals(dsTypeId))
+                .findAny()
                 .ifPresent(distributionSetTypes::remove);
+
         return this;
     }
 
     @Override
     public Set<DistributionSetType> getCompatibleDistributionSetTypes() {
-
         if (distributionSetTypes == null) {
             return Collections.emptySet();
         }
@@ -136,16 +106,6 @@ public class JpaTargetType extends AbstractJpaTypeEntity implements TargetType,
         return Collections.unmodifiableSet(distributionSetTypes);
     }
 
-    @Override
-    public Set<Target> getTargets() {
-        return targets;
-    }
-
-    @Override
-    public String toString() {
-        return "TargetType [key=" + getKey() + ", isDeleted()=" + isDeleted() + ", getId()=" + getId() + "]";
-    }
-
     @Override
     public void fireCreateEvent(final DescriptorEvent descriptorEvent) {
         EventPublisherHolder.getInstance().getEventPublisher().publishEvent(
@@ -163,4 +123,4 @@ public class JpaTargetType extends AbstractJpaTypeEntity implements TargetType,
         EventPublisherHolder.getInstance().getEventPublisher().publishEvent(new TargetTypeDeletedEvent(
                 getTenant(), getId(), getClass(), EventPublisherHolder.getInstance().getApplicationId()));
     }
-}
+}

hawkbit-repository/hawkbit-repository-jpa/src/main/java/org/eclipse/hawkbit/repository/jpa/specifications/DistributionSetSpecification.java

@@ -16,15 +16,14 @@ import java.util.List;
 import jakarta.persistence.criteria.CriteriaBuilder;
 import jakarta.persistence.criteria.Expression;
 import jakarta.persistence.criteria.JoinType;
-import jakarta.persistence.criteria.ListJoin;
 import jakarta.persistence.criteria.Order;
 import jakarta.persistence.criteria.Path;
 import jakarta.persistence.criteria.Predicate;
 import jakarta.persistence.criteria.Root;
 import jakarta.persistence.criteria.SetJoin;
 
-import org.eclipse.hawkbit.repository.jpa.model.JpaAction;
-import org.eclipse.hawkbit.repository.jpa.model.JpaAction_;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
 import org.eclipse.hawkbit.repository.jpa.model.JpaDistributionSet;
 import org.eclipse.hawkbit.repository.jpa.model.JpaDistributionSetTag;
 import org.eclipse.hawkbit.repository.jpa.model.JpaDistributionSetTag_;
@@ -41,12 +40,9 @@ import org.springframework.util.CollectionUtils;
 /**
  * Specifications class for {@link DistributionSet}s. The class provides Spring
  * Data JPQL Specifications.
- *
  */
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
 public final class DistributionSetSpecification {
-    private DistributionSetSpecification() {
-        // utility class
-    }
 
     /**
      * {@link Specification} for retrieving {@link DistributionSet}s with
@@ -293,5 +289,4 @@ public final class DistributionSetSpecification {
             return cb.equal(targetRoot.get(JpaTarget_.controllerId), linkedControllerId);
         };
     }
-
-}
+}

hawkbit-repository/hawkbit-repository-jpa/src/main/java/org/eclipse/hawkbit/repository/jpa/specifications/TargetTypeSpecification.java

@@ -9,12 +9,12 @@
  */
 package org.eclipse.hawkbit.repository.jpa.specifications;
 
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
 import org.eclipse.hawkbit.repository.jpa.model.JpaDistributionSetType;
 import org.eclipse.hawkbit.repository.jpa.model.JpaDistributionSetType_;
-import org.eclipse.hawkbit.repository.jpa.model.JpaTarget;
 import org.eclipse.hawkbit.repository.jpa.model.JpaTargetType;
 import org.eclipse.hawkbit.repository.jpa.model.JpaTargetType_;
-import org.eclipse.hawkbit.repository.jpa.model.JpaTarget_;
 import org.eclipse.hawkbit.repository.model.DistributionSetType;
 import org.eclipse.hawkbit.repository.model.TargetType;
 import org.springframework.data.jpa.domain.Specification;
@@ -23,94 +23,15 @@ import jakarta.persistence.criteria.SetJoin;
 import java.util.Collection;
 
 /**
- * Specifications class for {@link TargetType}s. The class provides Spring Data JPQL
- * Specifications.
- *
+ * Specifications class for {@link TargetType}s. The class provides Spring Data JPQL Specifications.
  */
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
 public final class TargetTypeSpecification {
 
-    private TargetTypeSpecification() {
-        // utility class
-    }
-
     /**
      * {@link Specification} for retrieving {@link TargetType}s by controllerId
      *
-     * @param id
-     *            to search for
-     *
-     * @return the {@link TargetType} {@link Specification}
-     */
-    public static Specification<JpaTargetType> hasId(final Long id) {
-        return (targetRoot, query, cb) -> cb.equal(targetRoot.get(JpaTargetType_.id), id);
-    }
-
-    /**
-     * {@link Specification} for retrieving {@link TargetType}s by controllerId
-     *
-     * @param id
-     *            to search for
-     *
-     * @return the {@link TargetType} {@link Specification}
-     */
-    public static Specification<JpaTargetType> hasTarget(final long id) {
-        return (targetRoot, query, cb) -> {
-            final SetJoin<JpaTargetType, JpaTarget> join = targetRoot.join(JpaTargetType_.targets);
-            return cb.equal(join.get(JpaTarget_.id), id);
-        };
-    }
-
-    /**
-     * {@link Specification} for retrieving {@link TargetType}s by controllerId
-     *
-     * @param ids
-     *            to search for
-     *
-     * @return the {@link TargetType} {@link Specification}
-     */
-    public static Specification<JpaTargetType> hasTarget(final Collection<Long> ids) {
-        return (targetRoot, query, cb) -> {
-            final SetJoin<JpaTargetType, JpaTarget> join = targetRoot.join(JpaTargetType_.targets);
-            return join.get(JpaTarget_.id).in(ids);
-        };
-    }
-
-    /**
-     * {@link Specification} for retrieving {@link TargetType}s by controllerId
-     *
-     * @param controllerId
-     *            to search for
-     *
-     * @return the {@link TargetType} {@link Specification}
-     */
-    public static Specification<JpaTargetType> hasTargetControllerId(final String controllerId) {
-        return (targetRoot, query, cb) -> {
-            final SetJoin<JpaTargetType, JpaTarget> join = targetRoot.join(JpaTargetType_.targets);
-            return cb.equal(join.get(JpaTarget_.controllerId), controllerId);
-        };
-    }
-
-    /**
-     * {@link Specification} for retrieving {@link TargetType}s by controllerId
-     *
-     * @param controllerIds
-     *            to search for
-     *
-     * @return the {@link TargetType} {@link Specification}
-     */
-    public static Specification<JpaTargetType> hasTargetControllerIdIn(final Collection<String> controllerIds) {
-        return (targetRoot, query, cb) -> {
-            final SetJoin<JpaTargetType, JpaTarget> join = targetRoot.join(JpaTargetType_.targets);
-            return join.get(JpaTarget_.controllerId).in(controllerIds);
-        };
-    }
-
-    /**
-     * {@link Specification} for retrieving {@link TargetType}s by controllerId
-     *
-     * @param ids
-     *            to search for
-     *
+     * @param ids to search for
      * @return the {@link TargetType} {@link Specification}
      */
     public static Specification<JpaTargetType> hasIdIn(final Collection<Long> ids) {
@@ -118,12 +39,9 @@ public final class TargetTypeSpecification {
     }
 
     /**
-     * {@link Specification} for retrieving {@link TargetType}s based on a
-     * {@link DistributionSetType} name.
-     *
-     * @param dsTypeId
-     *            to search for
+     * {@link Specification} for retrieving {@link TargetType}s based on a {@link DistributionSetType} name.
      *
+     * @param dsTypeId to search for
      * @return the {@link TargetType} {@link Specification}
      */
     public static Specification<JpaTargetType> hasDsSetType(final Long dsTypeId) {
@@ -138,8 +56,7 @@ public final class TargetTypeSpecification {
      * given {@link TargetType#getKey()} including fetching the
      * elements list.
      *
-     * @param key
-     *            to search
+     * @param key to search
      * @return the {@link TargetType} {@link Specification}
      */
     public static Specification<JpaTargetType> hasKey(final String key) {
@@ -151,8 +68,7 @@ public final class TargetTypeSpecification {
      * given {@link TargetType#getName()} including fetching the
      * elements list.
      *
-     * @param name
-     *            to search
+     * @param name to search
      * @return the {@link TargetType} {@link Specification}
      */
     public static Specification<JpaTargetType> hasName(final String name) {
@@ -162,11 +78,10 @@ public final class TargetTypeSpecification {
     /**
      * {@link Specification} for retrieving {@link TargetType}s by "like name".
      *
-     * @param name
-     *            to be filtered on
+     * @param name to be filtered on
      * @return the {@link TargetType} {@link Specification}
      */
     public static Specification<JpaTargetType> likeName(final String name) {
         return (targetRoot, query, cb) -> cb.like(cb.lower(targetRoot.get(JpaTargetType_.name)), name.toLowerCase());
     }
-}
+}