JPA Mapping for Migration from PostgreSQL to MySQL

Author: phasenraum2010

twitterwall2/pom.xml

@@ -143,10 +143,17 @@
             <artifactId>jsoup</artifactId>
             <version>1.10.3</version>
         </dependency>
+        <!--
         <dependency>
             <groupId>org.postgresql</groupId>
             <artifactId>postgresql</artifactId>
-            <version>42.1.1</version>
+            <version>42.2.2</version>
+        </dependency>
+        -->
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>5.1.46</version>
         </dependency>
         <dependency>
             <groupId>org.webjars</groupId>

twitterwall2/run.cmd

@@ -1,5 +1,9 @@
-set DATABASE_URL='jdbc:postgresql://localhost:5432/twitterwall2?user=twitterwall2&password=twitterwall2pwd'
-set DATABASE_URL_TEST='jdbc:postgresql://localhost:5432/twitterwall2test?user=twitterwall2test&password=twitterwall2testpwd'
+@REM set DATABASE_URL='jdbc:postgresql://[::1]:5432/twitterwall2?user=twitterwall2&password=twitterwall2pwd'
+@REM set DATABASE_URL_TEST='jdbc:postgresql://localhost:5432/twitterwall2test?user=twitterwall2test&password=twitterwall2testpwd'
+set DATABASE_URL=jdbc:mysql://localhost/twitterwall2?user=twitterwall2&password=twitterwall2pwd
+set DATABASE_PWD=twitterwall2pwd
+set DATABASE_URL_TEST=jdbc:mysql://localhost/twitterwall2test?user=twitterwall2test&password=twitterwall2testpwd
+set DATABASE_PWD_TEST=twitterwall2pwd
 set TWITTERWALL_FRONTEND_MAX_RESULTS=200
 set TWITTERWALL_SHOW_USERS_MENU=true
 set TWITTERWALL_CONTEXT_TEST=true

twitterwall2/src/main/java/org/woehlke/twitterwall/oodm/model/Media.java

@@ -21,15 +21,15 @@
     name = "media",
     uniqueConstraints = {
         @UniqueConstraint(name="unique_media_id_twitter", columnNames = {"id_twitter"})
-    },
-    indexes = {
-        @Index(name="idx_media_url", columnList= "url"),
-        @Index(name="idx_media_expanded", columnList="expanded"),
-        @Index(name="idx_media_display", columnList="display") ,
-        @Index(name="idx_media_media_http", columnList="media_http"),
-        @Index(name="idx_media_media_https", columnList="media_https"),
-        @Index(name="idx_media_media_type", columnList="media_type")
-    }
+    }//,
+    //indexes = {
+        //@Index(name="idx_media_url", columnList= "url"),
+        //@Index(name="idx_media_expanded", columnList="expanded"),
+        //@Index(name="idx_media_display", columnList="display") ,
+        //@Index(name="idx_media_media_http", columnList="media_http"),
+        //@Index(name="idx_media_media_https", columnList="media_https"),
+        //@Index(name="idx_media_media_type", columnList="media_type")
+    //}
 )
 @NamedQueries({
     @NamedQuery(
@@ -51,28 +51,28 @@ public class Media extends AbstractDomainObject<Media> implements DomainObjectEn
     private Long idTwitter;
 
     @NotNull
-    @Column(name = "media_http",length=4096, nullable = false)
+    @Column(name = "media_http", length=4096, columnDefinition="CHAR(4096)", nullable = false)
     private String mediaHttp = "";
 
     @NotNull
-    @Column(name = "media_https",length=4096, nullable = false)
+    @Column(name = "media_https", length=4096, columnDefinition="CHAR(4096)", nullable = false)
     private String mediaHttps = "";
 
     @URL
     @NotEmpty
-    @Column(length=4096, nullable = false)
+    @Column(length=4096, columnDefinition="CHAR(4096)", nullable = false)
     private String url;
 
     @NotNull
-    @Column(length=4096, nullable = false)
+    @Column(length=4096, columnDefinition="CHAR(4096)", nullable = false)
     private String display = "";
 
     @NotNull
-    @Column(length=4096, nullable = false)
+    @Column(length=4096, columnDefinition="CHAR(4096)", nullable = false)
     private String expanded = "";
 
     @NotNull
-    @Column(name = "media_type",length=4096, nullable = false)
+    @Column(name = "media_type", length=4096, columnDefinition="CHAR(4096)", nullable = false)
     private String mediaType = "";
 
 

twitterwall2/src/main/java/org/woehlke/twitterwall/oodm/model/Mention.java

@@ -23,13 +23,13 @@
     uniqueConstraints = {
         @UniqueConstraint(name = "unique_mention", columnNames = {"screen_name_unique", "id_twitter"}),
         @UniqueConstraint(name = "unique_mention_screen_name_unique", columnNames = {"screen_name_unique"}),
-    },
+    }/*,
     indexes = {
         @Index(name = "idx_mention_name", columnList = "name"),
         @Index(name = "idx_mention_screen_name", columnList = "screen_name"),
         @Index(name = "idx_mention_id_twitter_of_user", columnList = "id_twitter_of_user"),
         @Index(name = "idx_mention_fk_user", columnList = "fk_user")
-    }
+    }  */
 )
 @NamedQueries({
     @NamedQuery(
@@ -93,7 +93,7 @@ public class Mention extends AbstractDomainObject<Mention> implements DomainObje
     @Column(name = "screen_name_unique", nullable = false)
     private String screenNameUnique = "";
 
-    @Column(name = "name",length=4096, nullable = false)
+    @Column(name = "name", length=4096, columnDefinition="CHAR(4096)", nullable = false)
     private String name = "";
 
     @NotNull

twitterwall2/src/main/java/org/woehlke/twitterwall/oodm/model/Url.java

@@ -20,11 +20,11 @@
     name = "url",
     uniqueConstraints = {
         @UniqueConstraint(name="unique_url", columnNames = {"url"})
-    },
+    }/*,
     indexes = {
         @Index(name="idx_url_expanded", columnList="expanded"),
         @Index(name="idx_url_display", columnList="display")
-    }
+    }  */
 )
 @NamedQueries({
     @NamedQuery(
@@ -52,11 +52,11 @@ public class Url extends AbstractDomainObject<Url> implements DomainObjectEntity
     protected Long id;
 
     @NotNull
-    @Column(length=4096,nullable = false)
+    @Column(columnDefinition="CHAR(2048)",nullable = false)
     private String display="";
 
     @NotNull
-    @Column(length=4096,nullable = false)
+    @Column(columnDefinition="CHAR(2048)",nullable = false)
     private String expanded="";
 
     public static final String URL_PATTTERN_FOR_USER_HTTPS = "https://t\\.co/\\w*";
@@ -65,7 +65,7 @@ public class Url extends AbstractDomainObject<Url> implements DomainObjectEntity
 
     @URL
     @NotEmpty
-    @Column(nullable = false,length=4096)
+    @Column(nullable = false,columnDefinition="TEXT")
     private String url;
 
     @Transient

twitterwall2/src/main/java/org/woehlke/twitterwall/oodm/model/User.java

@@ -32,9 +32,9 @@
     },
     indexes = {
         @Index(name="idx_userprofile_created_date", columnList="created_date"),
-        @Index(name="idx_userprofile_description", columnList="description"),
+        //@Index(name="idx_userprofile_description", columnList="description"),
         @Index(name="idx_userprofile_location", columnList="location"),
-        @Index(name="idx_userprofile_url", columnList="url")
+        //@Index(name="idx_userprofile_url", columnList="url")
     }
 )
 @NamedQueries({
@@ -162,13 +162,13 @@ public class User extends AbstractDomainObject<User> implements DomainObjectWith
     @Column(nullable = false)
     private String name;
 
-    @Column(name="url", length = 4096)
+    @Column(name="url", length=4096, columnDefinition="CHAR(4096)")
     private String url;
 
-    @Column(length = 4096)
+    @Column(length=4096, columnDefinition="CHAR(2048)")
     private String profileImageUrl;
 
-    @Column(name="description", length = 4096)
+    @Column(name="description", length=4096, columnDefinition="CHAR(4096)")
     private String description;
 
     @Column(name="location")
@@ -238,7 +238,7 @@ public class User extends AbstractDomainObject<User> implements DomainObjectWith
     @Column
     private Boolean useBackgroundImage;
 
-    @Column(length = 4096)
+    @Column(length=4096, columnDefinition="CHAR(4096)")
     private String backgroundImageUrl;
 
     @Column
@@ -259,7 +259,7 @@ public class User extends AbstractDomainObject<User> implements DomainObjectWith
     @Column
     private Boolean friend;
 
-    @Column(length = 4096)
+    @Column(length=4096, columnDefinition="CHAR(4096)")
     private String profileBannerUrl;
 
     @NotNull

twitterwall2/src/main/resources/application.yml

@@ -40,32 +40,37 @@ spring:
       enabled: false
     name: @project.name@
   datasource:
-    driverClassName: org.postgresql.Driver
+    #driverClassName: org.postgresql.Driver
+    driverClassName: com.mysql.jdbc.Driver
     #initialSize: 5
     max-total: 20
     maxActive: 20
     maxIdle: 20
     #minIdle: 2
-    platform: POSTGRESQL
+    platform: MYSQL
+    #platform: POSTGRESQL
     #removeAbandoned: true
     tomcat:
       max-active: 20
       #max-wait: 100000
       #test-on-borrow: true
     url: ${DATABASE_URL}
+    password: ${DATABASE_PWD}
     continue-on-error: true
-    schema: classpath:org/springframework/session/jdbc/schema-postgresql.sql
+    #schema: classpath:org/springframework/session/jdbc/schema-postgresql.sql
+    schema: classpath:org/springframework/session/jdbc/schema-mysql.sql
   devtools:
     livereload:
       enabled: false
   jpa:
     generate-ddl: true
     hibernate:
-      ddl-auto: ${TWITTERWALL_JPA_HIBERNATE_DDL_AUTO}
-      #ddl-auto: create-drop
+      #ddl-auto: ${TWITTERWALL_JPA_HIBERNATE_DDL_AUTO}
+      ddl-auto: create-drop
     properties:
       hibernate:
-        dialect: org.hibernate.dialect.PostgreSQL94Dialect
+        #dialect: org.hibernate.dialect.PostgreSQL94Dialect
+        dialect: org.hibernate.dialect.MySQL5InnoDBDialect
     show-sql: false
   template:
     cache: false