From f641fe9baf1c9e3ed14606a222675883c9de6e67 Mon Sep 17 00:00:00 2001
From: insanity <insanity@loafle.com>
Date: Thu, 25 May 2017 16:30:53 +0900
Subject: [PATCH] jpa_base_dao impl

---
 .gitignore                                    | 73 +++++++++++++++++++
 pom.xml                                       | 35 +++++++++
 .../overflow/commons/dao/JPABaseDAO.java      | 50 +++++++++++++
 src/main/resources/_                          |  0
 src/test/java/com/loafle/AppTest.java         | 14 ++++
 src/test/resources/logback.xml                | 17 +++++
 6 files changed, 189 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 pom.xml
 create mode 100644 src/main/java/com/loafle/overflow/commons/dao/JPABaseDAO.java
 create mode 100644 src/main/resources/_
 create mode 100644 src/test/java/com/loafle/AppTest.java
 create mode 100644 src/test/resources/logback.xml

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..aa78a66
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,73 @@
+# Created by .ignore support plugin (hsz.mobi)
+### JetBrains template
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff:
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/dictionaries
+
+# Sensitive or high-churn files:
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.xml
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+
+# Gradle:
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Mongo Explorer plugin:
+.idea/**/mongoSettings.xml
+
+## File-based project format:
+*.iws
+
+## Plugin-specific files:
+
+# IntelliJ
+/out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+### Java template
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+.idea/
+*.iml
+target/
+
diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000..f114562
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>com.loafle</groupId>
+        <artifactId>maven_parent_jar</artifactId>
+        <version>1.0.0-RELEASE</version>
+    </parent>
+
+    <groupId>com.loafle</groupId>
+    <artifactId>jpa_base_dao</artifactId>
+    <packaging>jar</packaging>
+    <version>1.0.0-RELEASE</version>
+    <name>com.loafle.jpa_base_dao</name>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.loafle</groupId>
+            <artifactId>overflow_base_dao</artifactId>
+            <version>1.0.0-RELEASE</version>
+        </dependency>
+
+        <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-entitymanager -->
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-entitymanager</artifactId>
+            <version>5.2.10.Final</version>
+        </dependency>
+
+    </dependencies>
+
+</project>
\ No newline at end of file
diff --git a/src/main/java/com/loafle/overflow/commons/dao/JPABaseDAO.java b/src/main/java/com/loafle/overflow/commons/dao/JPABaseDAO.java
new file mode 100644
index 0000000..53524a8
--- /dev/null
+++ b/src/main/java/com/loafle/overflow/commons/dao/JPABaseDAO.java
@@ -0,0 +1,50 @@
+package com.loafle.overflow.commons.dao;
+
+import javax.persistence.EntityManager;
+import javax.persistence.Persistence;
+import javax.persistence.PersistenceContext;
+import java.lang.reflect.ParameterizedType;
+
+/**
+ * Created by insanity on 17. 5. 25.
+ */
+public class JPABaseDAO<T> implements BaseDAO<T>  {
+
+    @PersistenceContext
+    private EntityManager entityManager;
+    private final Class<T> entityType;
+
+    public JPABaseDAO() {
+        this.entityManager = Persistence.createEntityManagerFactory("overflow").createEntityManager();
+        this.entityType = ((Class<T>) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0]);
+    }
+
+    protected EntityManager getEntityManager() {
+        return this.entityManager;
+    }
+
+    public T find(T entity)
+    {
+        return this.entityManager.find(entityType, entity);
+    }
+
+    public T create(T entity) {
+        this.entityManager.getTransaction().begin();
+        this.entityManager.persist(entity);
+        this.entityManager.getTransaction().commit();
+        return entity;
+    }
+
+    public T update(T entity) {
+        this.entityManager.getTransaction().begin();
+        T result = this.entityManager.merge(entity);
+        this.entityManager.getTransaction().commit();
+        return result;
+    }
+
+    public void delete(T entity) {
+        this.entityManager.getTransaction().begin();
+        this.entityManager.remove(entityManager.contains(entity) ? entity : entityManager.merge(entity));
+        this.entityManager.getTransaction().commit();
+    }
+}
diff --git a/src/main/resources/_ b/src/main/resources/_
new file mode 100644
index 0000000..e69de29
diff --git a/src/test/java/com/loafle/AppTest.java b/src/test/java/com/loafle/AppTest.java
new file mode 100644
index 0000000..15c2fbc
--- /dev/null
+++ b/src/test/java/com/loafle/AppTest.java
@@ -0,0 +1,14 @@
+
+package com.loafle;
+import static org.junit.Assert.*;
+
+import org.junit.Ignore;
+import org.junit.Test;
+
+@Ignore
+public class AppTest {
+    @Test
+    public void testSum() {
+        fail("Not yet implemented");
+    }
+}
\ No newline at end of file
diff --git a/src/test/resources/logback.xml b/src/test/resources/logback.xml
new file mode 100644
index 0000000..084e93a
--- /dev/null
+++ b/src/test/resources/logback.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration scan="true" scanPeriod="3 seconds">
+    <contextName>jpa_base_dao</contextName>
+    <!-- TRACE > DEBUG > INFO > WARN > ERROR -->
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>
+                %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{32} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="DEBUG">
+        <appender-ref ref="STDOUT" />
+    </root>
+    <logger name="com.loafle" level="ALL" />
+</configuration>
\ No newline at end of file