Started work on database integration. Cleaned up caching of thumbnails and improved performance of the thumb path method.

pom.xml

@@ -26,9 +26,6 @@
   </pluginRepositories>
 
   <properties>
-    <project.version.major>0</project.version.major>
-    <project.version.minor>1</project.version.minor>
-    <project.version.tag>DEV</project.version.tag>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <jdk.version>1.7</jdk.version>
     <lib.junit.version>3.8.1</lib.junit.version>
@@ -46,6 +43,8 @@
     <lib.jtransforms.version>2.4.0</lib.jtransforms.version>
     <lib.typesafe-config.version>1.2.0</lib.typesafe-config.version>
     <lib.thumbnailator.version>[0.4, 0.5)</lib.thumbnailator.version>
+    <lib.h2database.version>1.3.175</lib.h2database.version>
+    <lib.hibernate.version>4.3.0.Final</lib.hibernate.version>
   </properties>
 
   <dependencies>
@@ -136,6 +135,21 @@
       <artifactId>akka-slf4j_2.10</artifactId>
       <version>${lib.akka.version}</version>
     </dependency>
+    <dependency>
+      <groupId>com.h2database</groupId>
+      <artifactId>h2</artifactId>
+      <version>${lib.h2database.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>org.hibernate</groupId>
+      <artifactId>hibernate-core</artifactId>
+      <version>${lib.hibernate.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>org.hibernate</groupId>
+      <artifactId>hibernate-ehcache</artifactId>
+      <version>${lib.hibernate.version}</version>
+    </dependency>
   </dependencies>
 
   <build>
@@ -337,6 +351,9 @@
             <phase>process-resources</phase>        
             <configuration>          
               <tasks>
+                <copy todir="${basedir}/src/test/resources/hibernate">
+                  <fileset dir="${basedir}/src/main/resources/hibernate" includes="**/*" />
+                </copy>
                 <copy file="${project.build.directory}/version.info" toFile="${basedir}/version.info" overwrite="true" />          
                 <copy file="${project.build.directory}/name.info" toFile="${basedir}/name.info" overwrite="true" />          
                 <copy file="${project.build.directory}/LICENSE" toFile="${basedir}/LICENSE" overwrite="true" />          

src/main/resources/application.conf

@@ -52,4 +52,9 @@ app {
     //Size of the thumbnail to generate and store
     size = 128
   }
+  //Default Database Settings 
+  database {
+    location = ".cache/database.db"
+    inMemory = false
+  }
 }

src/main/resources/hibernate.cfg.xml

@@ -0,0 +1,34 @@
+<?xml version='1.0' encoding='utf-8'?>
+<!DOCTYPE hibernate-configuration PUBLIC
+    "-//Hibernate/Hibernate Configuration DTD//EN"
+    "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
+<hibernate-configuration>
+    <!-- a SessionFactory instance listed as /jndi/name -->
+    <session-factory
+        name="java:hibernate/SessionFactory">
+        
+        <!-- properties -->
+        <property name="connection.driver_class">org.h2.Driver</property> 
+        <property name="connection.datasource">jdbc:h2:.cache/database.db</property>
+        <property name="dialect">org.hibernate.dialect.H2Dialect</property>
+        <property name="show_sql">false</property>
+        <property name="transaction.factory_class">
+            org.hibernate.transaction.JTATransactionFactory
+        </property>
+        <property name="jta.UserTransaction">java:comp/UserTransaction</property>
+        
+        <!-- Enable Hibernate's automatic session context management -->
+        <property name="current_session_context_class">thread</property>
+
+        <!-- Disable the second-level cache  -->
+        <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property> 
+        
+        <!-- mapping files -->
+        <!--<mapping resource="hibernate/"/>-->
+        
+        <!-- cache settings -->
+        <!--<class-cache class="org.hibernate.auction.Item" usage="read-write"/>
+        <class-cache class="org.hibernate.auction.Bid" usage="read-only"/>
+        <collection-cache collection="org.hibernate.auction.Item.bids" usage="read-write"/>-->
+    </session-factory>
+</hibernate-configuration>

src/main/scala/com/sothr/imagetools/image/ImageService.scala

@@ -14,7 +14,6 @@ import com.sothr.imagetools.util.{PropertiesEnum, PropertiesService}
 object ImageService extends Logging {
 
   val imageCache = AppConfig.cacheManager.getCache("images")
-  val thumbnailCache = AppConfig.cacheManager.getCache("thumbnails")
 
   private def lookupImage(file:File):Image = {
       var image:Image = null
@@ -45,7 +44,7 @@ object ImageService extends Logging {
         val bufferedImage = ImageIO.read(file)
         val hashes = HashService.getImageHashes(bufferedImage, file.getAbsolutePath)
         var thumbnailPath = lookupThumbnailPath(hashes.md5)
-        if (thumbnailPath == null) thumbnailPath = saveThumbnail(hashes.md5, getThumbnail(bufferedImage, hashes.md5))
+        if (thumbnailPath == null) thumbnailPath = getThumbnail(bufferedImage, hashes.md5)
         val imageSize = { (bufferedImage.getWidth, bufferedImage.getHeight) }
         val image = new Image(file.getAbsolutePath, thumbnailPath, imageSize, hashes)
         debug(s"Created image: $image")
@@ -61,8 +60,9 @@ object ImageService extends Logging {
   def calculateThumbPath(md5:String):String = {
     //break the path down into 4 char parts
     val split:List[String] = md5.grouped(4).toList
-    var path:String = PropertiesService.get(PropertiesEnum.ThumbnailDirectory.toString) + PropertiesService.get(PropertiesEnum.ThumbnailSize.toString) + "/"
-    for (seg <- split) path += seg + "/"
+    var dirPath = ""
+    for (seg <- split) dirPath += seg + "/"
+    var path:String = s"${PropertiesService.get(PropertiesEnum.ThumbnailDirectory.toString)}${PropertiesService.get(PropertiesEnum.ThumbnailSize.toString)}/$dirPath"
     try {
       val dir = new File(path)
       if (!dir.exists()) dir.mkdirs()
@@ -76,13 +76,6 @@ object ImageService extends Logging {
   def lookupThumbnailPath(md5:String):String = {
     var thumbPath:String = null
     if (md5 != null) {
-      //get from memory cache if possible
-      try {
-        if (thumbnailCache.isKeyInCache(md5)) thumbPath = thumbnailCache.get(md5).getObjectValue.asInstanceOf[String]
-      } catch {
-        case npe:NullPointerException => error(s"Error grabbing \'$md5\' from cache. thumbPath: \'$thumbPath\'", npe)
-      }
-      //get from datastore if possible
       //check for the actual file
       val checkPath = calculateThumbPath(md5)
       if (new File(checkPath).exists) thumbPath = checkPath
@@ -108,14 +101,6 @@ object ImageService extends Logging {
     path
   }
 
-  def saveThumbnail(md5:String, thumbnailPath:String):String = {
-    if (md5 == null || thumbnailPath == null) error(s"Error trying to save a md5: $md5 path: $thumbnailPath")
-    //save to cache
-    thumbnailCache.put(new Element(md5, thumbnailPath))
-    //save to datastore
-    thumbnailPath
-  }
-
   /**
    * Get the raw data for an image
    */

src/test/resources/application.conf

@@ -52,4 +52,9 @@ app {
     //Size of the thumbnail to generate and store
     size = 128
   }
+  //Default Database Settings 
+  database {
+    location = ".cache/database.db"
+    inMemory = false
+  }
 }

todo

@@ -7,3 +7,10 @@ Add functionality to ImageService
 Improve functionality of the PropertiesService
     -Getters and Setters for sepcific values with proper cascading and type awareness
     -Nicer debugging?
+Hibernate - H2 intergration
+    - setup hibernate
+    - setup h2
+    - setup C3P0 connection pool
+    - transfer configuration files
+    - autoload configuration files?
+    - map DTO's