feat(TCOMP-612): support shared connections

* Add raw DataSources to globalMap

* Add SharedConnectionPool implementation to globalMap

main/plugins/org.talend.designer.codegen/jet_stub/footer.javajet

@@ -256,6 +256,36 @@
 
     public String status= "";
     
+    <%
+    boolean containGenericComponents = false;
+	for(INode node : process.getGeneratingNodes()) {
+		IComponent component = node.getComponent();
+		if(EComponentType.GENERIC.equals(component.getComponentType())) {
+			containGenericComponents = true;
+			break;
+		}
+	}
+	if(containGenericComponents) {
+    %>
+    private final org.talend.components.common.runtime.SharedConnectionsPool connectionPool = new org.talend.components.common.runtime.SharedConnectionsPool() {
+    	public java.sql.Connection getDBConnection(String dbDriver, String url, String userName, String password, String dbConnectionName)
+            throws ClassNotFoundException, java.sql.SQLException {
+            return SharedDBConnection.getDBConnection(dbDriver, url, userName, password, dbConnectionName);
+        }
+
+    	public java.sql.Connection getDBConnection(String dbDriver, String url, String dbConnectionName)
+            throws ClassNotFoundException, java.sql.SQLException {
+            return SharedDBConnection.getDBConnection(dbDriver, url, dbConnectionName);
+        }
+    };
+    
+    private static final String GLOBAL_CONNECTION_POOL_KEY = "GLOBAL_CONNECTION_POOL";
+    
+    {
+    	globalMap.put(GLOBAL_CONNECTION_POOL_KEY, connectionPool);
+    }
+    <%}%>
+
     public static void main(String[] args){
         final <%=className %> <%=className %>Class = new <%=className %>();
 

main/plugins/org.talend.designer.codegen/jet_stub/header.javajet

@@ -373,12 +373,15 @@ private RunTrace runTrace = new RunTrace();
 	// OSGi DataSource
 	private final static String KEY_DB_DATASOURCES = "KEY_DB_DATASOURCES";
 	
+	private final static String KEY_DB_DATASOURCES_RAW = "KEY_DB_DATASOURCES_RAW";
+
 	public void setDataSources(java.util.Map<String, javax.sql.DataSource> dataSources) {
 		java.util.Map<String, routines.system.TalendDataSource> talendDataSources = new java.util.HashMap<String, routines.system.TalendDataSource>();
 		for (java.util.Map.Entry<String, javax.sql.DataSource> dataSourceEntry : dataSources.entrySet()) {
 			talendDataSources.put(dataSourceEntry.getKey(), new routines.system.TalendDataSource(dataSourceEntry.getValue()));
 		}
 		globalMap.put(KEY_DB_DATASOURCES, talendDataSources);
+		globalMap.put(KEY_DB_DATASOURCES_RAW, new java.util.HashMap<String, javax.sql.DataSource>(dataSources));
 	}
 
 <%