Why Hibernate doesnt create a join query - sql-server

Question

I have ValidationErrorAsset table which have 7 foreign key columns referenced to ValidationErrorMaster.
I wrote Entity classes for them assuming Hibernate will fetch data using some join (less concerned inner/outer for now).
But Hibernate actually writes 8 simple select queries. 1 for ValidationErrorAsset and other 7 for ValidationErrorMaster, gets data and creates the object.
This involves total 8 network calls which is so costly.
Please help me fixing this.
Below are 2 Entities and Hibernate generated queries:
ValidationErrorAsset .class
#Entity
public class ValidationErrorAsset {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer validationErrorAssetId;
#ManyToOne
#JoinColumn(name = "asset_type_id")
private ValidationErrorMaster assetTypeError;
#ManyToOne
#JoinColumn(name = "asset_group_id")
private ValidationErrorMaster assetGroupError;
#ManyToOne
#JoinColumn(name = "name")
private ValidationErrorMaster nameError;
#ManyToOne
#JoinColumn(name = "asset_family_type_id")
private ValidationErrorMaster assetFamilyTypeError;
#ManyToOne
#JoinColumn(name = "source_repository_id")
private ValidationErrorMaster sourceRepositoryError;
#ManyToOne
#JoinColumn(name = "source_repository_path")
private ValidationErrorMaster sourceRepositoryPathError;
#ManyToOne
#JoinColumn(name = "asset_publisher_type_id")
private ValidationErrorMaster assetPublisherTypeError;
}
ValidationErrorMaster.class
#Entity
public class ValidationErrorMaster {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer validationErrorMasterId;
private String errorCode;
private String description;
private Boolean activeInd;
private String updtUsername;
private Integer updtCnt=0;
private LocalDateTime updtDtTm=LocalDateTime.now(ZoneOffset.UTC);;
private String severityLevel;
private Boolean skippable;
}
Hibernate generated MS-SQL query:
Hibernate:
select
validation0_.validation_error_asset_id as validati1_35_,
validation0_.active_ind as active_i2_35_,
validation0_.error_obj as error_ob3_35_,
validation0_.updt_cnt as updt_cnt4_35_,
validation0_.updt_dt_tm as updt_dt_5_35_,
validation0_.updt_username as updt_use6_35_,
validation0_.asset_family_type_id as asset_fa7_35_,
validation0_.asset_group_id as asset_gr8_35_,
validation0_.asset_id as asset_id9_35_,
validation0_.asset_publisher_type_id as asset_p10_35_,
validation0_.asset_type_id as asset_t11_35_,
validation0_.name as name12_35_,
validation0_.source_repository_id as source_13_35_,
validation0_.source_repository_path as source_14_35_
from
validation_error_asset validation0_
Hibernate:
select
validation0_.validation_error_master_id as validati1_36_0_,
validation0_.active_ind as active_i2_36_0_,
validation0_.description as descript3_36_0_,
validation0_.error_code as error_co4_36_0_,
validation0_.severity_level as severity5_36_0_,
validation0_.skippable as skippabl6_36_0_,
validation0_.updt_cnt as updt_cnt7_36_0_,
validation0_.updt_dt_tm as updt_dt_8_36_0_,
validation0_.updt_username as updt_use9_36_0_
from
validation_error_master validation0_
where
validation0_.validation_error_master_id=?
Hibernate:
select
validation0_.validation_error_master_id as validati1_36_0_,
validation0_.active_ind as active_i2_36_0_,
validation0_.description as descript3_36_0_,
validation0_.error_code as error_co4_36_0_,
validation0_.severity_level as severity5_36_0_,
validation0_.skippable as skippabl6_36_0_,
validation0_.updt_cnt as updt_cnt7_36_0_,
validation0_.updt_dt_tm as updt_dt_8_36_0_,
validation0_.updt_username as updt_use9_36_0_
from
validation_error_master validation0_
where
validation0_.validation_error_master_id=?
Rest 4 I skipped to add.