- Restore accidentally lost files from SAP ERP interface. (#359)

- Files restored from SHA-1: 0a47432

Author: AlejandroP

java/src/main/java/com/genexus/sap/DestinationProvider.java

@@ -0,0 +1,105 @@
+package com.genexus.sap;
+
+import java.util.Hashtable;
+import java.util.Properties;
+
+import com.genexus.diagnostics.Log;
+import com.sap.conn.jco.ext.DestinationDataEventListener;
+import com.sap.conn.jco.ext.DestinationDataProvider;
+import com.sap.conn.jco.ext.Environment;
+
+public class DestinationProvider implements DestinationDataProvider 
+{
+	
+	private static DestinationProvider _instance;
+	public static DestinationProvider Instance()
+	{
+		if (_instance == null)
+		{
+			_instance = new DestinationProvider();
+		}
+		return _instance;
+		
+	}
+	
+	private String SAP_SERVER = "SAP_SERVER";
+	private Properties connectionProperties;
+	private Hashtable<String, Properties> connectionList = new Hashtable<String, Properties>(); 
+	private DestinationDataEventListener eventListener;
+	
+	/*@Override*/
+	public Properties getDestinationProperties(String sessionName)
+	{
+		if (sessionName != null)
+		{			
+			Properties val = connectionList.get(sessionName);
+			if (val != null)
+			{			
+				return val;
+			}
+			else
+			{
+				return null;
+			}
+		}
+		else
+		{
+			return null;
+		}
+	}
+	
+	/*@Override*/
+	public boolean supportsEvents()
+	{
+		return true;
+		
+	}
+	
+	/*@Override*/
+	public void setDestinationDataEventListener(DestinationDataEventListener eventListener)
+	{	
+		this.eventListener = eventListener;
+	}
+	
+	public void removeConnectionProperties(String sessionName)
+	{
+		if (eventListener != null)
+		{
+			eventListener.deleted(sessionName);
+		}
+		connectionProperties = null;
+		connectionList.remove(sessionName);
+	}
+
+	public void setConnectionProperties( String sessionName, Properties properties)
+	{
+		if ( sessionName == null || sessionName.equals(""))
+		{
+			sessionName = SAP_SERVER;
+			
+		}
+		if (!Environment.isDestinationDataProviderRegistered()) 
+		{
+			Environment.registerDestinationDataProvider(this);
+		}
+		if (properties == null)
+		{			
+			if (eventListener != null)
+			{
+				eventListener.deleted( sessionName);
+			}
+			connectionProperties = null;
+			connectionList.remove( sessionName);
+		}
+		else
+		{
+			Log.info("GX SAP - Setting Properties : " + sessionName + " total : " + Integer.toString(connectionList.size()));
+			connectionProperties = properties;
+			connectionList.put( sessionName, connectionProperties);
+			if (eventListener != null)
+			{
+				eventListener.updated(sessionName);
+			}
+		}				
+	}
+}