Final commit to master merge from

Change-Id: Ib464f9a8828437c86fe6def8af238aaf83473507
Issue-ID: SDC-714
Signed-off-by: Tal Gitelman <tg851x@intl.att.com>

36 files changed, 120 insertions, 80 deletions

diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/api/ActionStatus.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/api/ActionStatus.java
index 4ae3e61841..3b440df653 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/api/ActionStatus.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/api/ActionStatus.java
@@ -26,6 +26,7 @@ public enum ActionStatus {
 	USER_ALREADY_EXIST, USER_INACTIVE, USER_NOT_FOUND, USER_HAS_ACTIVE_ELEMENTS, INVALID_EMAIL_ADDRESS, INVALID_ROLE, DELETE_USER_ADMIN_CONFLICT, UPDATE_USER_ADMIN_CONFLICT, CANNOT_DELETE_USER_WITH_ACTIVE_ELEMENTS, CANNOT_UPDATE_USER_WITH_ACTIVE_ELEMENTS, INVALID_USER_ID,
 	// CapabilityType related
 	CAPABILITY_TYPE_ALREADY_EXIST, MISSING_CAPABILITY_TYPE, REQ_CAP_NOT_SATISFIED_BEFORE_CERTIFICATION, IMPORT_DUPLICATE_REQ_CAP_NAME, IMPORT_REQ_CAP_NAME_EXISTS_IN_DERIVED,
+	CAPABILITY_OF_INSTANCE_NOT_FOUND_ON_CONTAINER, REQUIREMENT_OF_INSTANCE_NOT_FOUND_ON_CONTAINER, 	RELATION_NOT_FOUND,
 	// Resource related
 	RESOURCE_NOT_FOUND, MISSING_DERIVED_FROM_TEMPLATE, PARENT_RESOURCE_NOT_FOUND, PARENT_RESOURCE_DOES_NOT_EXTEND, INVALID_DEFAULT_VALUE, INVALID_COMPLEX_DEFAULT_VALUE, MULTIPLE_PARENT_RESOURCE_FOUND, INVALID_RESOURCE_PAYLOAD, INVALID_TOSCA_FILE_EXTENSION, INVALID_YAML_FILE, INVALID_TOSCA_TEMPLATE, NOT_RESOURCE_TOSCA_TEMPLATE, NOT_SINGLE_RESOURCE, INVALID_RESOURCE_NAMESPACE, RESOURCE_ALREADY_EXISTS, INVALID_RESOURCE_CHECKSUM, RESOURCE_CANNOT_CONTAIN_RESOURCE_INSTANCES, NO_ASSETS_FOUND, GENERIC_TYPE_NOT_FOUND,INVALID_RESOURCE_TYPE, TOSCA_PARSE_ERROR,
 	// Service related
@@ -89,6 +90,5 @@ public enum ActionStatus {
 	// Inputs
 	INPUT_IS_NOT_CHILD_OF_COMPONENT,
 	CFVC_LOOP_DETECTED,
-	
 	;
 }
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/ArtifactAccessor.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/ArtifactAccessor.java
index 61e23b8de2..871374eae9 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/ArtifactAccessor.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/ArtifactAccessor.java
@@ -1,11 +1,9 @@
 package org.openecomp.sdc.be.dao.cassandra;
 
 import com.datastax.driver.core.ResultSet;
-import com.datastax.driver.mapping.Result;
 import com.datastax.driver.mapping.annotations.Accessor;
 import com.datastax.driver.mapping.annotations.Param;
 import com.datastax.driver.mapping.annotations.Query;
-import org.openecomp.sdc.be.resources.data.auditing.DistributionStatusEvent;
 
 
 /**
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/ArtifactCassandraDao.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/ArtifactCassandraDao.java
index 5b37d3df2c..df107787e7 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/ArtifactCassandraDao.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/ArtifactCassandraDao.java
@@ -22,7 +22,6 @@ package org.openecomp.sdc.be.dao.cassandra;
 
 import javax.annotation.PostConstruct;
 
-import com.datastax.driver.core.ResultSet;
 import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.openecomp.sdc.be.resources.data.ESArtifactData;
 import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
@@ -30,6 +29,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Component;
 
+import com.datastax.driver.core.ResultSet;
 import com.datastax.driver.core.Session;
 import com.datastax.driver.mapping.MappingManager;
 
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/CassandraClient.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/CassandraClient.java
index 10b9b0578c..38606d00e9 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/CassandraClient.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/CassandraClient.java
@@ -24,7 +24,6 @@ import java.util.List;
 
 import javax.annotation.PreDestroy;
 
-import com.datastax.driver.core.policies.*;
 import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.openecomp.sdc.be.config.ConfigurationManager;
 import org.slf4j.Logger;
@@ -33,6 +32,11 @@ import org.springframework.stereotype.Component;
 
 import com.datastax.driver.core.Cluster;
 import com.datastax.driver.core.Session;
+import com.datastax.driver.core.policies.ConstantReconnectionPolicy;
+import com.datastax.driver.core.policies.DCAwareRoundRobinPolicy;
+import com.datastax.driver.core.policies.DefaultRetryPolicy;
+import com.datastax.driver.core.policies.LoadBalancingPolicy;
+import com.datastax.driver.core.policies.TokenAwarePolicy;
 import com.datastax.driver.mapping.Mapper;
 import com.datastax.driver.mapping.MappingManager;
 
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/CassandraDao.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/CassandraDao.java
index 1d2eb15354..5ff2917c27 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/CassandraDao.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/CassandraDao.java
@@ -20,17 +20,18 @@
 
 package org.openecomp.sdc.be.dao.cassandra;
 
-import com.datastax.driver.core.ResultSet;
-import com.datastax.driver.core.Statement;
-import com.datastax.driver.core.querybuilder.QueryBuilder;
-import fj.data.Either;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 
+import com.datastax.driver.core.ResultSet;
 import com.datastax.driver.core.Session;
+import com.datastax.driver.core.Statement;
+import com.datastax.driver.core.querybuilder.QueryBuilder;
 import com.datastax.driver.mapping.MappingManager;
 
+import fj.data.Either;
+
 public abstract class CassandraDao {
 
 	private static Logger logger = LoggerFactory.getLogger(CassandraDao.class.getName());
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/SdcSchemaBuilder.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/SdcSchemaBuilder.java
index f9dc9b22a4..fa5c4acaf3 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/SdcSchemaBuilder.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/SdcSchemaBuilder.java
@@ -20,21 +20,29 @@
 
 package org.openecomp.sdc.be.dao.cassandra.schema;
 
-import com.datastax.driver.core.*;
-import com.datastax.driver.core.schemabuilder.Alter;
-import com.datastax.driver.core.schemabuilder.Create;
-import com.datastax.driver.core.schemabuilder.SchemaBuilder;
-import com.datastax.driver.core.schemabuilder.SchemaStatement;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
 import org.apache.commons.lang3.tuple.ImmutablePair;
-import org.openecomp.sdc.be.config.*;
 import org.openecomp.sdc.be.config.Configuration;
+import org.openecomp.sdc.be.config.ConfigurationManager;
 import org.openecomp.sdc.be.dao.cassandra.schema.tables.OldExternalApiEventTableDesc;
 import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.*;
-import java.util.stream.Collectors;
+import com.datastax.driver.core.Cluster;
+import com.datastax.driver.core.DataType;
+import com.datastax.driver.core.KeyspaceMetadata;
+import com.datastax.driver.core.Session;
+import com.datastax.driver.core.schemabuilder.Alter;
+import com.datastax.driver.core.schemabuilder.Create;
+import com.datastax.driver.core.schemabuilder.SchemaBuilder;
+import com.datastax.driver.core.schemabuilder.SchemaStatement;
 
 public class SdcSchemaBuilder {
 
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/SdcSchemaUtils.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/SdcSchemaUtils.java
index 56cf32a152..e1e33871b1 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/SdcSchemaUtils.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/SdcSchemaUtils.java
@@ -20,12 +20,14 @@
 
 package org.openecomp.sdc.be.dao.cassandra.schema;
 
-import com.datastax.driver.core.*;
+import java.util.List;
+
 import org.openecomp.sdc.be.config.ConfigurationManager;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.List;
+import com.datastax.driver.core.Cluster;
+import com.datastax.driver.core.Session;
 
 public class SdcSchemaUtils {
 
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/Table.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/Table.java
index f6fd29bd1f..5cbe2508b1 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/Table.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/Table.java
@@ -20,7 +20,25 @@
 
 package org.openecomp.sdc.be.dao.cassandra.schema;
 
-import org.openecomp.sdc.be.dao.cassandra.schema.tables.*;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.ArtifactTableDescription;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.AuthEventTableDescription;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.CategoryEventTableDescription;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.ComponentCacheTableDescription;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.ConsumerEventTableDefinition;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.DistribDeployEventTableDesc;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.DistribDownloadEventTableDesc;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.DistribEngineEventTableDesc;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.DistribNotifEventTableDesc;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.DistribStatusEventTableDesc;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.ExternalApiEventTableDesc;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.GetCatHierEventTableDesc;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.GetUebClusterEventTableDesc;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.GetUsersListEventTableDesc;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.MigrationTasksTableDescription;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.ResAdminEventTableDescription;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.SdcSchemaFilesTableDescription;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.UserAccessEventTableDescription;
+import org.openecomp.sdc.be.dao.cassandra.schema.tables.UserAdminEventTableDescription;
 
 public enum Table {
 
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/CategoryEventTableDescription.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/CategoryEventTableDescription.java
index c49651e548..facbd5209a 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/CategoryEventTableDescription.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/CategoryEventTableDescription.java
@@ -26,12 +26,10 @@ import java.util.List;
 import java.util.Map;
 
 import org.apache.commons.lang3.tuple.ImmutablePair;
-import org.openecomp.sdc.be.config.ConfigurationManager;
 import org.openecomp.sdc.be.dao.cassandra.schema.ITableDescription;
 import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
 
 import com.datastax.driver.core.DataType;
-import com.datastax.driver.mapping.annotations.Column;
 
 public class CategoryEventTableDescription implements ITableDescription {
 	@Override
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ComponentCacheTableDescription.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ComponentCacheTableDescription.java
index 611138efa0..1d60bec1cc 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ComponentCacheTableDescription.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ComponentCacheTableDescription.java
@@ -20,11 +20,12 @@
 
 package org.openecomp.sdc.be.dao.cassandra.schema.tables;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 
 import org.apache.commons.lang3.tuple.ImmutablePair;
-import org.openecomp.sdc.be.config.Configuration;
-import org.openecomp.sdc.be.config.ConfigurationManager;
 import org.openecomp.sdc.be.dao.cassandra.schema.ITableDescription;
 import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
 
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ConsumerEventTableDefinition.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ConsumerEventTableDefinition.java
index 68ec5620ba..46664c6df8 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ConsumerEventTableDefinition.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ConsumerEventTableDefinition.java
@@ -27,7 +27,6 @@ import java.util.Map;
 
 import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.openecomp.sdc.be.dao.cassandra.schema.ITableDescription;
-import org.openecomp.sdc.be.dao.cassandra.schema.tables.GetUebClusterEventTableDesc.DEEFieldsDescription;
 import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
 
 import com.datastax.driver.core.DataType;
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/DistribDeployEventTableDesc.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/DistribDeployEventTableDesc.java
index 32c2365b95..a233110f9e 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/DistribDeployEventTableDesc.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/DistribDeployEventTableDesc.java
@@ -27,7 +27,6 @@ import java.util.Map;
 
 import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.openecomp.sdc.be.dao.cassandra.schema.ITableDescription;
-import org.openecomp.sdc.be.dao.cassandra.schema.tables.DistribDownloadEventTableDesc.DSEFieldsDescription;
 import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
 
 import com.datastax.driver.core.DataType;
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/DistribStatusEventTableDesc.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/DistribStatusEventTableDesc.java
index d1c73bf46e..fe5bb465c3 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/DistribStatusEventTableDesc.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/DistribStatusEventTableDesc.java
@@ -26,7 +26,6 @@ import java.util.List;
 import java.util.Map;
 
 import org.apache.commons.lang3.tuple.ImmutablePair;
-import org.openecomp.sdc.be.config.ConfigurationManager;
 import org.openecomp.sdc.be.dao.cassandra.schema.ITableDescription;
 import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
 
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ExternalApiEventTableDesc.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ExternalApiEventTableDesc.java
index cb659b9a8a..e35acc3790 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ExternalApiEventTableDesc.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ExternalApiEventTableDesc.java
@@ -24,6 +24,7 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+
 import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.openecomp.sdc.be.dao.cassandra.schema.ITableDescription;
 import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/GetCatHierEventTableDesc.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/GetCatHierEventTableDesc.java
index 3858b7d8f6..4e44bd2975 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/GetCatHierEventTableDesc.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/GetCatHierEventTableDesc.java
@@ -27,7 +27,6 @@ import java.util.Map;
 
 import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.openecomp.sdc.be.dao.cassandra.schema.ITableDescription;
-import org.openecomp.sdc.be.dao.cassandra.schema.tables.GetUsersListEventTableDesc.DEEFieldsDescription;
 import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
 
 import com.datastax.driver.core.DataType;
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/GetUebClusterEventTableDesc.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/GetUebClusterEventTableDesc.java
index 40a1827e36..92b10772e6 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/GetUebClusterEventTableDesc.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/GetUebClusterEventTableDesc.java
@@ -27,7 +27,6 @@ import java.util.Map;
 
 import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.openecomp.sdc.be.dao.cassandra.schema.ITableDescription;
-import org.openecomp.sdc.be.dao.cassandra.schema.tables.DistribEngineEventTableDesc.DEEFieldsDescription;
 import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
 
 import com.datastax.driver.core.DataType;
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/GetUsersListEventTableDesc.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/GetUsersListEventTableDesc.java
index 4bd3e296ef..cdb603de6c 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/GetUsersListEventTableDesc.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/GetUsersListEventTableDesc.java
@@ -27,7 +27,6 @@ import java.util.Map;
 
 import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.openecomp.sdc.be.dao.cassandra.schema.ITableDescription;
-import org.openecomp.sdc.be.dao.cassandra.schema.tables.GetUebClusterEventTableDesc.DEEFieldsDescription;
 import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
 
 import com.datastax.driver.core.DataType;
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/MigrationTasksTableDescription.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/MigrationTasksTableDescription.java
index 885a7a7ce3..2e8c5ff024 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/MigrationTasksTableDescription.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/MigrationTasksTableDescription.java
@@ -1,9 +1,7 @@
 package org.openecomp.sdc.be.dao.cassandra.schema.tables;
 
-import com.datastax.driver.core.DataType;
-import org.apache.commons.lang3.tuple.ImmutablePair;
-import org.openecomp.sdc.be.dao.cassandra.schema.ITableDescription;
-import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
+import static org.openecomp.sdc.be.dao.cassandra.schema.tables.MigrationTasksTableDescription.SdcRepoFieldsDescription.MAJOR_VERSION;
+import static org.openecomp.sdc.be.dao.cassandra.schema.tables.MigrationTasksTableDescription.SdcRepoFieldsDescription.MINOR_VERSION;
 
 import java.util.Arrays;
 import java.util.Collections;
@@ -11,8 +9,11 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-import static org.openecomp.sdc.be.dao.cassandra.schema.tables.MigrationTasksTableDescription.SdcRepoFieldsDescription.MAJOR_VERSION;
-import static org.openecomp.sdc.be.dao.cassandra.schema.tables.MigrationTasksTableDescription.SdcRepoFieldsDescription.MINOR_VERSION;
+import org.apache.commons.lang3.tuple.ImmutablePair;
+import org.openecomp.sdc.be.dao.cassandra.schema.ITableDescription;
+import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
+
+import com.datastax.driver.core.DataType;
 
 public class MigrationTasksTableDescription implements ITableDescription {
 
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/OldExternalApiEventTableDesc.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/OldExternalApiEventTableDesc.java
index 7459a4b5d9..ec2dd368e3 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/OldExternalApiEventTableDesc.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/OldExternalApiEventTableDesc.java
@@ -24,6 +24,7 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+
 import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.openecomp.sdc.be.dao.cassandra.schema.ITableDescription;
 import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ResAdminEventTableDescription.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ResAdminEventTableDescription.java
index e928982127..f6c5689973 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ResAdminEventTableDescription.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/ResAdminEventTableDescription.java
@@ -26,12 +26,10 @@ import java.util.List;
 import java.util.Map;
 
 import org.apache.commons.lang3.tuple.ImmutablePair;
-import org.openecomp.sdc.be.config.ConfigurationManager;
 import org.openecomp.sdc.be.dao.cassandra.schema.ITableDescription;
 import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
 
 import com.datastax.driver.core.DataType;
-import com.datastax.driver.mapping.annotations.Column;
 
 public class ResAdminEventTableDescription implements ITableDescription {
 
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/UserAdminEventTableDescription.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/UserAdminEventTableDescription.java
index dd8df08cdd..0cfdc2e462 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/UserAdminEventTableDescription.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/schema/tables/UserAdminEventTableDescription.java
@@ -26,7 +26,6 @@ import java.util.List;
 import java.util.Map;
 
 import org.apache.commons.lang3.tuple.ImmutablePair;
-import org.openecomp.sdc.be.config.ConfigurationManager;
 import org.openecomp.sdc.be.dao.cassandra.schema.ITableDescription;
 import org.openecomp.sdc.be.resources.data.auditing.AuditingTypesConstants;
 
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/graph/datatype/GraphEdge.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/graph/datatype/GraphEdge.java
index 4555f9f9ea..2858a81a60 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/graph/datatype/GraphEdge.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/graph/datatype/GraphEdge.java
@@ -22,9 +22,7 @@ package org.openecomp.sdc.be.dao.graph.datatype;
 
 import java.util.Map;
 
-import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.openecomp.sdc.be.dao.neo4j.GraphEdgeLabels;
-import org.openecomp.sdc.be.dao.neo4j.GraphPropertiesDictionary;
 
 public class GraphEdge {
 
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/ESTimeBasedDao.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/ESTimeBasedDao.java
index bdd1a2fb47..252240b164 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/ESTimeBasedDao.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/ESTimeBasedDao.java
@@ -35,8 +35,8 @@ import org.elasticsearch.action.search.SearchResponse;
 import org.elasticsearch.common.unit.TimeValue;
 import org.elasticsearch.index.query.QueryBuilder;
 import org.elasticsearch.search.sort.SortBuilder;
-import org.openecomp.sdc.be.config.ConfigurationManager;
 import org.openecomp.sdc.be.config.Configuration.ElasticSearchConfig.IndicesTimeFrequencyEntry;
+import org.openecomp.sdc.be.config.ConfigurationManager;
 import org.openecomp.sdc.be.dao.api.ActionStatus;
 import org.openecomp.sdc.be.dao.es.ElasticSearchClient;
 import org.openecomp.sdc.common.api.Constants;
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/GraphVertex.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/GraphVertex.java
index 6966abb1c9..d38e9c03df 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/GraphVertex.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/GraphVertex.java
@@ -30,7 +30,6 @@ import org.openecomp.sdc.be.dao.jsongraph.types.VertexTypeEnum;
 import org.openecomp.sdc.be.datatypes.enums.ComponentTypeEnum;
 import org.openecomp.sdc.be.datatypes.enums.GraphPropertyEnum;
 import org.openecomp.sdc.be.datatypes.enums.JsonPresentationFields;
-import org.openecomp.sdc.be.datatypes.enums.ResourceTypeEnum;
 import org.openecomp.sdc.be.datatypes.tosca.ToscaDataDefinition;
 
 import com.thinkaurelius.titan.core.TitanVertex;
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/types/VertexTypeEnum.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/types/VertexTypeEnum.java
index c3e88c85bf..08652ba171 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/types/VertexTypeEnum.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/types/VertexTypeEnum.java
@@ -20,7 +20,20 @@
 
 package org.openecomp.sdc.be.dao.jsongraph.types;
 
-import org.openecomp.sdc.be.datatypes.elements.*;
+import org.openecomp.sdc.be.datatypes.elements.AdditionalInfoParameterDataDefinition;
+import org.openecomp.sdc.be.datatypes.elements.ArtifactDataDefinition;
+import org.openecomp.sdc.be.datatypes.elements.CompositionDataDefinition;
+import org.openecomp.sdc.be.datatypes.elements.GroupDataDefinition;
+import org.openecomp.sdc.be.datatypes.elements.InterfaceDataDefinition;
+import org.openecomp.sdc.be.datatypes.elements.ListCapabilityDataDefinition;
+import org.openecomp.sdc.be.datatypes.elements.ListRequirementDataDefinition;
+import org.openecomp.sdc.be.datatypes.elements.MapArtifactDataDefinition;
+import org.openecomp.sdc.be.datatypes.elements.MapCapabiltyProperty;
+import org.openecomp.sdc.be.datatypes.elements.MapGroupsDataDefinition;
+import org.openecomp.sdc.be.datatypes.elements.MapListCapabiltyDataDefinition;
+import org.openecomp.sdc.be.datatypes.elements.MapListRequirementDataDefinition;
+import org.openecomp.sdc.be.datatypes.elements.MapPropertiesDataDefinition;
+import org.openecomp.sdc.be.datatypes.elements.PropertyDataDefinition;
 
 
 public enum VertexTypeEnum {
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/utils/IdBuilderUtils.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/utils/IdBuilderUtils.java
index f4aff17ce6..7b0719e063 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/utils/IdBuilderUtils.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/utils/IdBuilderUtils.java
@@ -21,6 +21,7 @@
 package org.openecomp.sdc.be.dao.jsongraph.utils;
 
 import java.util.UUID;
+
 import org.openecomp.sdc.be.dao.jsongraph.types.VertexTypeEnum;
 
 public class IdBuilderUtils {
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/neo4j/GraphEdgePropertiesDictionary.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/neo4j/GraphEdgePropertiesDictionary.java
index 2af909ee0d..6bba5dac9d 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/neo4j/GraphEdgePropertiesDictionary.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/neo4j/GraphEdgePropertiesDictionary.java
@@ -23,8 +23,6 @@ package org.openecomp.sdc.be.dao.neo4j;
 import java.util.ArrayList;
 import java.util.List;
 
-import org.openecomp.sdc.be.datatypes.enums.NodeTypeEnum;
-
 public enum GraphEdgePropertiesDictionary {
 
 	// field name class type
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/rest/HttpRestClient.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/rest/HttpRestClient.java
index 91a984b7f2..563129937e 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/rest/HttpRestClient.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/rest/HttpRestClient.java
@@ -27,7 +27,6 @@ import java.util.Properties;
 
 import org.apache.commons.io.IOUtils;
 import org.apache.http.HttpEntity;
-import org.apache.http.HttpStatus;
 import org.apache.http.client.config.RequestConfig;
 import org.apache.http.client.methods.CloseableHttpResponse;
 import org.apache.http.client.methods.HttpGet;
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/TitanGenericDao.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/TitanGenericDao.java
index 8445d58873..8bd190f932 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/TitanGenericDao.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/TitanGenericDao.java
@@ -29,15 +29,12 @@ import java.util.Map.Entry;
 import java.util.stream.Collectors;
 import java.util.stream.StreamSupport;
 
-import javax.annotation.Resource;
-
 import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.apache.commons.lang3.tuple.ImmutableTriple;
 import org.apache.tinkerpop.gremlin.structure.Direction;
 import org.apache.tinkerpop.gremlin.structure.Edge;
 import org.apache.tinkerpop.gremlin.structure.Element;
 import org.apache.tinkerpop.gremlin.structure.Property;
-import org.apache.tinkerpop.gremlin.structure.T;
 import org.apache.tinkerpop.gremlin.structure.Vertex;
 import org.apache.tinkerpop.gremlin.structure.util.ElementHelper;
 import org.openecomp.sdc.be.config.ConfigurationManager;
@@ -47,7 +44,6 @@ import org.openecomp.sdc.be.dao.graph.datatype.GraphElementTypeEnum;
 import org.openecomp.sdc.be.dao.graph.datatype.GraphNode;
 import org.openecomp.sdc.be.dao.graph.datatype.GraphRelation;
 import org.openecomp.sdc.be.dao.graph.datatype.RelationEndPoint;
-import org.openecomp.sdc.be.dao.jsongraph.types.EdgeLabelEnum;
 import org.openecomp.sdc.be.dao.neo4j.GraphEdgeLabels;
 import org.openecomp.sdc.be.dao.neo4j.GraphPropertiesDictionary;
 import org.openecomp.sdc.be.datatypes.enums.NodeTypeEnum;
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/TitanGraphClient.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/TitanGraphClient.java
index 07030472a4..edcf70f093 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/TitanGraphClient.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/TitanGraphClient.java
@@ -21,11 +21,7 @@
 package org.openecomp.sdc.be.dao.titan;
 
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.HashMap;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.Map;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
@@ -37,23 +33,13 @@ import java.util.concurrent.TimeUnit;
 import javax.annotation.PostConstruct;
 
 import org.apache.commons.configuration.BaseConfiguration;
-import org.apache.tinkerpop.gremlin.structure.Edge;
 import org.apache.tinkerpop.gremlin.structure.T;
 import org.apache.tinkerpop.gremlin.structure.Vertex;
 import org.openecomp.sdc.be.config.BeEcompErrorManager;
 import org.openecomp.sdc.be.config.ConfigurationManager;
 import org.openecomp.sdc.be.dao.DAOTitanStrategy;
 import org.openecomp.sdc.be.dao.TitanClientStrategy;
-import org.openecomp.sdc.be.dao.graph.datatype.ActionEnum;
-import org.openecomp.sdc.be.dao.graph.datatype.GraphElementTypeEnum;
-import org.openecomp.sdc.be.dao.neo4j.GraphEdgePropertiesDictionary;
 import org.openecomp.sdc.be.dao.neo4j.GraphPropertiesDictionary;
-import org.openecomp.sdc.be.dao.utils.UserStatusEnum;
-import org.openecomp.sdc.be.datatypes.enums.NodeTypeEnum;
-import org.openecomp.sdc.be.resources.data.CategoryData;
-import org.openecomp.sdc.be.resources.data.ResourceCategoryData;
-import org.openecomp.sdc.be.resources.data.ServiceCategoryData;
-import org.openecomp.sdc.be.resources.data.UserData;
 import org.openecomp.sdc.common.config.EcompErrorName;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -67,7 +53,6 @@ import com.thinkaurelius.titan.core.SchemaViolationException;
 import com.thinkaurelius.titan.core.TitanConfigurationException;
 import com.thinkaurelius.titan.core.TitanFactory;
 import com.thinkaurelius.titan.core.TitanGraph;
-import com.thinkaurelius.titan.core.TitanGraphQuery;
 import com.thinkaurelius.titan.core.TitanVertex;
 import com.thinkaurelius.titan.core.TitanVertexProperty;
 import com.thinkaurelius.titan.core.schema.ConsistencyModifier;
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/utils/MapUtil.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/utils/MapUtil.java
index 84802ce293..e8b2e0c9ad 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/utils/MapUtil.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/utils/MapUtil.java
@@ -20,8 +20,14 @@
 
 package org.openecomp.sdc.be.dao.utils;
 
+import java.util.ArrayList;
+import java.util.Collection;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
+import java.util.Optional;
+import java.util.function.Function;
+import java.util.stream.Collectors;
 
 /**
  * Utility class to ease map manipulation.
@@ -63,6 +69,38 @@ public final class MapUtil {
 	}
 
 	/**
+	 *
+	 * @param valuesToMap the list of values to group
+	 * @param groupingFunction the function to group the list values by
+	 * @return a map of list of values grouped by a key, as specified in the {@code groupingFunction}
+	 */
+	public static <K,V> Map<K,List<V>> groupListBy(Collection<V> valuesToMap, Function<V,K> groupingFunction) {
+		return valuesToMap.stream().collect(Collectors.groupingBy(groupingFunction));
+	}
+
+	/**
+	 *
+	 * @param valuesToMap list of values to map
+	 * @param mappingFunction a function which specifies how to map each element on the list
+	 * @return a map created by mapping each element from the {@code valuesToMap} as specified in the {@code mappingFunction}
+	 */
+	public static <K,V> Map<K,V> toMap(Collection<V> valuesToMap, Function<V,K> mappingFunction) {
+		return Optional.ofNullable(valuesToMap).orElse(new ArrayList<>()).stream().collect(Collectors.toMap(mappingFunction, Function.identity()));
+	}
+
+	/**
+	 *
+	 * @param map the map of which it keys to convert
+	 * @param keyMappingFunction a function which converts the key object
+	 * @return a map with converted keys.
+	 */
+	public static <K,U, V> Map<U, List<V>> convertMapKeys(Map<K, List<V>> map, Function<K,U> keyMappingFunction) {
+		return map.entrySet().stream()
+				.collect(Collectors.toMap(entry -> keyMappingFunction.apply(entry.getKey()),
+										  Map.Entry::getValue));
+	}
+
+	/**
 	 * Create a new hash map and fills it from the given keys and values
 	 * (keys[index] -> values[index].
 	 * 
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/api/IResourceUploader.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/api/IResourceUploader.java
index 9eea2962e1..46599ed2d8 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/api/IResourceUploader.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/api/IResourceUploader.java
@@ -20,13 +20,8 @@
 
 package org.openecomp.sdc.be.resources.api;
 
-import java.util.List;
-import java.util.Map;
-
 import org.openecomp.sdc.be.dao.api.ResourceUploadStatus;
 import org.openecomp.sdc.be.resources.data.ESArtifactData;
-import org.openecomp.sdc.be.resources.data.ServiceArtifactsDataCollection;
-import org.openecomp.sdc.be.resources.exception.ResourceDAOException;
 
 import fj.data.Either;
 
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/CapabilityInstData.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/CapabilityInstData.java
index 4c9bf6767e..0b5da1217d 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/CapabilityInstData.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/CapabilityInstData.java
@@ -21,7 +21,6 @@
 package org.openecomp.sdc.be.resources.data;
 
 import java.lang.reflect.Type;
-import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/ComponentMetadataData.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/ComponentMetadataData.java
index 7e084eb021..fb58e9abff 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/ComponentMetadataData.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/ComponentMetadataData.java
@@ -28,8 +28,6 @@ import java.util.Map;
 import org.openecomp.sdc.be.dao.graph.datatype.GraphNode;
 import org.openecomp.sdc.be.dao.neo4j.GraphPropertiesDictionary;
 import org.openecomp.sdc.be.datatypes.components.ComponentMetadataDataDefinition;
-import org.openecomp.sdc.be.datatypes.enums.ComponentTypeEnum;
-import org.openecomp.sdc.be.datatypes.enums.GraphPropertyEnum;
 import org.openecomp.sdc.be.datatypes.enums.NodeTypeEnum;
 
 import com.google.gson.reflect.TypeToken;
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/GroupInstanceData.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/GroupInstanceData.java
index 7138fe5f72..88f7ad9342 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/GroupInstanceData.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/GroupInstanceData.java
@@ -25,10 +25,8 @@ import java.util.Map;
 
 import org.openecomp.sdc.be.dao.graph.datatype.GraphNode;
 import org.openecomp.sdc.be.dao.neo4j.GraphPropertiesDictionary;
-import org.openecomp.sdc.be.datatypes.elements.ComponentInstanceDataDefinition;
 import org.openecomp.sdc.be.datatypes.elements.GroupInstanceDataDefinition;
 import org.openecomp.sdc.be.datatypes.enums.NodeTypeEnum;
-import org.openecomp.sdc.be.datatypes.enums.OriginTypeEnum;
 
 
 public class GroupInstanceData extends GraphNode {
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/MigrationTaskEntry.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/MigrationTaskEntry.java
index b64ef201dd..be3ace6420 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/MigrationTaskEntry.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/resources/data/MigrationTaskEntry.java
@@ -1,13 +1,12 @@
 package org.openecomp.sdc.be.resources.data;
 
+import java.util.Date;
+
 import com.datastax.driver.mapping.annotations.ClusteringColumn;
 import com.datastax.driver.mapping.annotations.Column;
 import com.datastax.driver.mapping.annotations.PartitionKey;
 import com.datastax.driver.mapping.annotations.Table;
 
-import java.math.BigInteger;
-import java.util.Date;
-
 @Table(keyspace = "sdcrepository", name = "migrationTasks")
 public class MigrationTaskEntry {