2020.01 / [월간] 공부할 필요성을 느낀 것 & 읽고싶은것

DAY 06 

IP range

https://confluence.atlassian.com/jirakb/error-connecting-to-database-fatal-no-pg_hba-conf-entry-for-host-x-x-x-x-user-jiradbuser-database-jiradb-ssl-off-950801726.html

Error Connecting to database FATAL : no pg_hba.conf entry for host"x.x.x.x", user"jiradbuser", database"jiradb", SSL off - Atlas

https://www.postgresql.org/docs/devel/auth-pg-hba-conf.html

PostgreSQL: Documentation: devel: 20.1. The pg_hba.conf File

https://studyforus.tistory.com/137

불러오는 중입니다...

@Autowired 애노테이션

https://galid1.tistory.com/512

Spring - @Autowired 분석!

 

 

 

DAY 11

static vs final

https://stackoverflow.com/questions/13772827/difference-between-static-and-final

Difference between Static and final?

 

 

DAY 16

The Joel Test: 12 Steps to Better Code – Joel on Software

https://www.joelonsoftware.com/2000/08/09/the-joel-test-12-steps-to-better-code/

The Joel Test: 12 Steps to Better Code

 

쉘스크립트 기초 https://www.shellscript.sh/

Shell Scripting Tutorial

https://kangsecu.tistory.com/54

Linux Shell Script 기초

 

 

 

DAY 30

Map과 HashMap의 차이?

Postgres 에서 jsonb 타입을 사용하기 위해 

<!-- https://mvnrepository.com/artifact/com.vladmihalcea/hibernate-types-52 -->
        <dependency>
            <groupId>com.vladmihalcea</groupId>
            <artifactId>hibernate-types-52</artifactId>
            <version>2.9.3</version>
        </dependency>

dependency 를 추가해야했는데, 

package com.회사.lab.tour.geolocation.model;

import com.couchbase.client.java.repository.annotation.Field;
import com.fasterxml.jackson.annotation.JsonView;
import com.interpark.lab.tour.geolocation.config.ViewJson;
import com.vladmihalcea.hibernate.type.json.JsonBinaryType;
import lombok.Data;
import org.hibernate.annotations.Type;
import org.hibernate.annotations.TypeDef;
import org.hibernate.annotations.TypeDefs;
import org.json.JSONObject;
import org.locationtech.jts.geom.Geometry;

import javax.persistence.*;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

@Data
@Entity
@Table(name = "json_b_test_region_100_007")
@TypeDefs({
        @TypeDef(name = "jsonb", typeClass = JsonBinaryType.class)
})
public class ExpediaRegionUnion {

    @Id @GeneratedValue(strategy = GenerationType.AUTO)
    private String region_id;

    @Field("region_name")
    @JsonView({ViewJson.Admin.class})
    private String region_name;

    @Field("region_type")
    private String region_type;


    @Type(type = "jsonb")
    @Column(columnDefinition = "jsonb")
    private HashMap jsonb;

    @Type(type = "jsonb")
    @Column(columnDefinition = "jsonb")
    private HashMap es;

    @Field("polygon")
    private Geometry polygon;

    @Field("created_at")
    private Date createdAt;

    @Field("updated_at")
    private Date updatedAt;
}

위와같은 설정에서 HashMap을 Map으로 작성하니 실행이 되지 않았다. (https://stackoverflow.com/questions/50394856/spring-data-jpa-jpamappingcontext-error-illegalstateexception-expected-to-be) 이걸 보고 해결했지만, Map과 HashMap의 차이가 궁금해졌다.

 

 

DAY 31

그러고보니 JSONB가 뭔지 모름ㅋ http://json-b.net/index.html

https://developer.ibm.com/articles/j-javaee8-json-binding-4/

Is it time for a JSON binding standard?

https://developer.ibm.com/articles/j-javaee8-json-binding-2/

불러오는 중입니다...

https://developer.ibm.com/articles/j-javaee8-json-binding-3/

불러오는 중입니다...