From f3bb13279eaafe0a5ac922022dba25ae5aaf6c3f Mon Sep 17 00:00:00 2001
From: Alessandro Pieve <alessandro.pieve@isti.cnr.it>
Date: Tue, 17 Jan 2017 11:04:47 +0000
Subject: [PATCH] Add a openConnection and disconnect

git-svn-id: https://svn.d4science.research-infrastructures.eu/gcube/trunk/data-publishing/document-store-lib@141600 82a268e6-3cf1-43bd-a215-b396298e98cf
---
 .project                                      | 13 ++++++++++
 .../FallbackPersistenceBackend.java           |  8 ++++++
 .../persistence/PersistenceBackend.java       | 26 ++++++++++++++++++-
 .../PersistenceBackendFactory.java            |  4 +--
 4 files changed, 48 insertions(+), 3 deletions(-)

diff --git a/.project b/.project
index 56f8b28..de8ff78 100644
--- a/.project
+++ b/.project
@@ -5,11 +5,21 @@
 	<projects>
 	</projects>
 	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.wst.common.project.facet.core.builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
 		<buildCommand>
 			<name>org.eclipse.jdt.core.javabuilder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.wst.validation.validationbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
 		<buildCommand>
 			<name>org.eclipse.m2e.core.maven2Builder</name>
 			<arguments>
@@ -17,7 +27,10 @@
 		</buildCommand>
 	</buildSpec>
 	<natures>
+		<nature>org.eclipse.jem.workbench.JavaEMFNature</nature>
+		<nature>org.eclipse.wst.common.modulecore.ModuleCoreNature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
 		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+		<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
 	</natures>
 </projectDescription>
diff --git a/src/main/java/org/gcube/documentstore/persistence/FallbackPersistenceBackend.java b/src/main/java/org/gcube/documentstore/persistence/FallbackPersistenceBackend.java
index 64b6e96..519dc5b 100644
--- a/src/main/java/org/gcube/documentstore/persistence/FallbackPersistenceBackend.java
+++ b/src/main/java/org/gcube/documentstore/persistence/FallbackPersistenceBackend.java
@@ -38,6 +38,12 @@ public class FallbackPersistenceBackend extends PersistenceBackend {
 		// Nothing TO DO
 	}
 
+	@Override
+	protected void openConnection() throws Exception {
+		// Nothing TO DO
+	}
+	
+	
 	/**
 	 * {@inheritDoc}
 	 * This method is synchronized on {@link File} used, so any actions which 
@@ -70,5 +76,7 @@ public class FallbackPersistenceBackend extends PersistenceBackend {
 	public void close() throws Exception {
 		// Nothing TO DO
 	}
+
+	
 	
 }
diff --git a/src/main/java/org/gcube/documentstore/persistence/PersistenceBackend.java b/src/main/java/org/gcube/documentstore/persistence/PersistenceBackend.java
index 2b28be8..1e846a7 100644
--- a/src/main/java/org/gcube/documentstore/persistence/PersistenceBackend.java
+++ b/src/main/java/org/gcube/documentstore/persistence/PersistenceBackend.java
@@ -89,6 +89,21 @@ public abstract class PersistenceBackend {
 	 */
 	protected abstract void prepareConnection(PersistenceBackendConfiguration configuration) throws Exception;
 
+	/**
+	 * This method is for open connection 
+	 * @throws Exception
+	 */
+	protected abstract  void openConnection() throws Exception ;
+	
+	
+	/**
+	 * This method is for disconnect
+	 * @throws Exception
+	 */
+	protected void disconnect() throws Exception {
+		//NOTHING 
+	};
+	
 	/**
 	 * This method contains the code to save the {@link Record}
 	 * 
@@ -99,9 +114,13 @@ public abstract class PersistenceBackend {
 	/***
 	 * 
 	 * @param records
+	 * @throws Exception 
 	 */
-	protected void accountWithFallback(Record... records) {
+	protected void accountWithFallback(Record... records) throws Exception {
 		String persistenceName = this.getClass().getSimpleName();
+		
+		this.openConnection();
+		
 		for(Record record : records){
 			try {
 				//old code
@@ -135,6 +154,8 @@ public abstract class PersistenceBackend {
 						//old code
 						//PersistenceBackendFactory.renew(this);
 						countFallback=0;
+						//disconnect 	
+						this.disconnect();
 					}
 				}
 				else{
@@ -152,6 +173,7 @@ public abstract class PersistenceBackend {
 				}
 			}
 		}
+		this.close();
 	}
 
 	/**
@@ -217,6 +239,8 @@ public abstract class PersistenceBackend {
 
 	public abstract void close() throws Exception;
 
+	
+
 
 
 }
diff --git a/src/main/java/org/gcube/documentstore/persistence/PersistenceBackendFactory.java b/src/main/java/org/gcube/documentstore/persistence/PersistenceBackendFactory.java
index d723391..6e3a92c 100644
--- a/src/main/java/org/gcube/documentstore/persistence/PersistenceBackendFactory.java
+++ b/src/main/java/org/gcube/documentstore/persistence/PersistenceBackendFactory.java
@@ -166,9 +166,9 @@ public abstract class PersistenceBackendFactory {
 		logger.trace("Going to synchronized block in getPersistenceBackend");
 		synchronized (persistenceBackends) {
 			persistence = persistenceBackends.get(context);
-			logger.trace("[getPersistenceBackend]{} {} in context {}", PersistenceBackend.class.getSimpleName(), persistence,context);
+			//logger.trace("[getPersistenceBackend]{} {} in context {}", PersistenceBackend.class.getSimpleName(), persistence,context);
 			if(persistence==null){
-				
+				logger.trace("[getPersistenceBackend]{} {} in context {}", PersistenceBackend.class.getSimpleName(), persistence,context);
 				/* 
 				 * Setting FallbackPersistence and unlocking.
 				 * There will be another thread which will try to discover the