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easybest avatar easybest commented on July 20, 2024

sample code :

@Entity
public class Manager extends LongId {

    private String     login;
    @JdbcType(VARCHAR)
    @Column(name = "roles")
    @TypeHandler(RoleListTypeHandler.class)
    private List<Role> roleList;

    public String getLogin() {
        return login;
    }

    public void setLogin(String login) {
        this.login = login;
    }

    public List<Role> getRoleList() {
        return roleList;
    }

    public void setRoleList(List<Role> roleList) {
        this.roleList = roleList;
    }

    @Override
    public String toString() {
        return "Manager{" +
                "login='" + login + '\'' +
                ", roleList=" + roleList +
                '}';
    }
}

from spring-data-mybatis.

easybest avatar easybest commented on July 20, 2024
@MappedJdbcTypes(JdbcType.VARCHAR)
@MappedTypes(List.class)
public class RoleListTypeHandler extends BaseTypeHandler<List<Role>> {

    @Override
    public void setNonNullParameter(PreparedStatement ps, int i, List<Role> roleList, JdbcType jdbcType) throws SQLException {
        Set<Integer> roles = new HashSet<>();
        for (Role role : roleList) {
            roles.add(role.getValue());
        }
        ps.setString(i, StringUtils.collectionToDelimitedString(roles, ","));
    }

    @Override
    public List<Role> getNullableResult(ResultSet rs, String columnName) throws SQLException {
        String roles = rs.getString(columnName);
        return getRoleListFromResultString(roles);
    }

    @Override
    public List<Role> getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
        return getRoleListFromResultString(rs.getString(columnIndex));
    }

    @Override
    public List<Role> getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
        return getRoleListFromResultString(cs.getString(columnIndex));
    }

    private List<Role> getRoleListFromResultString(String result) {
        ArrayList<Role> roleList = new ArrayList();
        for (String role : result.split(",")) {
            roleList.add(Role.getRoleFromValue(Integer.parseInt(role)));
        }

        return roleList;
    }
}

from spring-data-mybatis.

easybest avatar easybest commented on July 20, 2024
public enum Role {
    ROLE_USER(1),
    ROLE_MANAGER(2),
    ROLE_ADMIN(3),
    ROLE_CLIENT(4),
    ROLE_TRUSTED_CLIENT(5);

    private int value;

    Role(final int value) {
        this.value = value;
    }

    public int getValue() {
        return value;
    }

    public void setValue(int value) {
        this.value = value;
    }

    /**
     * From int to Role
     *
     * @param value
     * @return
     */
    public static Role getRoleFromValue(int value) {
        Role result = null;
        for (Role s : Role.values()) {
            if (s.getValue() == value) {
                result = s;
            }
        }
        if (result == null) {
            throw new IllegalArgumentException("No exist the Role with that value");
        }
        return result;
    }
}

from spring-data-mybatis.

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