From 87f1f38af752a3302eca99a92022f089dd54e9f2 Mon Sep 17 00:00:00 2001
From: Giancarlo Panichi <giancarlo.panichi@isti.cnr.it>
Date: Thu, 19 Jan 2017 17:57:32 +0000
Subject: [PATCH] Updated to new PortalContext

git-svn-id: https://svn.d4science.research-infrastructures.eu/gcube/trunk/portlets/user/tabular-data-gwt-service@141655 82a268e6-3cf1-43bd-a215-b396298e98cf
---
 .../user/td/gwtservice/server/SessionOp.java  | 106 ++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionOp.java

diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionOp.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionOp.java
new file mode 100644
index 0000000..711f07f
--- /dev/null
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionOp.java
@@ -0,0 +1,106 @@
+package org.gcube.portlets.user.td.gwtservice.server;
+
+import java.util.HashMap;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpSession;
+
+import org.gcube.portlets.user.td.gwtservice.server.util.ServiceCredentials;
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTServiceException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * 
+ * @author Giancarlo Panichi email: <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
+ *
+ * @param <T>
+ */
+public class SessionOp<T> {
+
+	private static Logger logger = LoggerFactory.getLogger(SessionOp.class);
+
+	public T get(HttpServletRequest httpRequest,
+			ServiceCredentials serviceCredentials, String attribute,
+			Class<T> cls) throws TDGWTServiceException {
+		HttpSession httpSession = httpRequest.getSession();
+		T value = null;
+
+		@SuppressWarnings("unchecked")
+		HashMap<String, T> map = (HashMap<String, T>) httpSession
+				.getAttribute(attribute);
+
+		if (map != null) {
+			if (map.containsKey(serviceCredentials.getScope())) {
+				value = map.get(serviceCredentials.getScope());
+			} else {
+				logger.error("" + attribute + " was not acquired");
+				try {
+					value = cls.newInstance();
+					map.put(serviceCredentials.getScope(), value);
+				} catch (InstantiationException | IllegalAccessException e) {
+					String error = "Error reading session attribute: "
+							+ e.getLocalizedMessage();
+					logger.error(error, e);
+					throw new TDGWTServiceException(error, e);
+				}
+
+			}
+		} else {
+			logger.error("" + attribute + " was not acquired");
+			map = new HashMap<>();
+			try {
+				value = cls.newInstance();
+				map.put(serviceCredentials.getScope(), value);
+				httpSession.setAttribute(attribute, map);
+			} catch (InstantiationException | IllegalAccessException e) {
+				String error = "Error reading session attribute: "
+						+ e.getLocalizedMessage();
+				logger.error(error, e);
+				throw new TDGWTServiceException(error, e);
+			}
+
+		}
+		return value;
+	}
+
+	public T get(HttpServletRequest httpRequest,
+			ServiceCredentials serviceCredentials, String attribute) {
+		HttpSession httpSession = httpRequest.getSession();
+		T value = null;
+
+		@SuppressWarnings("unchecked")
+		HashMap<String, T> map = (HashMap<String, T>) httpSession
+				.getAttribute(attribute);
+
+		if (map != null) {
+			if (map.containsKey(serviceCredentials.getScope())) {
+				value = map.get(serviceCredentials.getScope());
+			} else {
+				logger.error("" + attribute + " was not acquired");
+			}
+		} else {
+			logger.error("" + attribute + " was not acquired");
+		}
+		return value;
+	}
+
+	public void set(HttpServletRequest httpRequest,
+			ServiceCredentials serviceCredentials, String attribute, T value) {
+		HttpSession httpSession = httpRequest.getSession();
+
+		@SuppressWarnings("unchecked")
+		HashMap<String, T> map = (HashMap<String, T>) httpSession
+				.getAttribute(attribute);
+
+		if (map != null) {
+			map.put(serviceCredentials.getScope(), value);
+		} else {
+			map = new HashMap<>();
+			map.put(serviceCredentials.getScope(), value);
+			httpSession.setAttribute(attribute, map);
+		}
+	}
+
+}