DB2 read-only connection support

plugins/org.jkiss.dbeaver.db2/src/org/jkiss/dbeaver/ext/db2/DB2Constants.java

@@ -37,6 +37,7 @@ public class DB2Constants {
     public static final String PROP_TRACE_FILE = DBConstants.INTERNAL_PROP_PREFIX + "trace.file";
     public static final String PROP_TRACE_APPEND = DBConstants.INTERNAL_PROP_PREFIX + "trace.append";
     public static final String PROP_TRACE_LEVEL = DBConstants.INTERNAL_PROP_PREFIX + "trace.level";
+    public static final String PROP_READ_ONLY = "readOnly";
 
     // Explain Tables
     public static final String EXPLAIN_SCHEMA_NAME_DEFAULT = "SYSTOOLS";

plugins/org.jkiss.dbeaver.db2/src/org/jkiss/dbeaver/ext/db2/DB2DataSourceProvider.java

@@ -30,6 +30,7 @@ import org.jkiss.dbeaver.model.runtime.DBRProgressMonitor;
 import org.jkiss.dbeaver.model.struct.DBSDataSourceContainer;
 import org.jkiss.utils.CommonUtils;
 
+import java.util.HashMap;
 import java.util.Map;
 
 /**
@@ -37,7 +38,7 @@ import java.util.Map;
  */
 public class DB2DataSourceProvider extends JDBCDataSourceProvider {
 
-    private static Map<String, String> connectionsProps;
+    private static Map<String, String> connectionsProps = new HashMap<String, String>();
 
     // ------------
     // Constructors

plugins/org.jkiss.dbeaver.db2/src/org/jkiss/dbeaver/ext/db2/model/DB2DataSource.java

@@ -70,6 +70,7 @@ import org.jkiss.dbeaver.ui.UIUtils;
 
 import java.sql.SQLException;
 import java.util.Collection;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
@@ -271,7 +272,12 @@ public class DB2DataSource extends JDBCDataSource implements DBSObjectSelector,
     @Override
     protected Map<String, String> getInternalConnectionProperties()
     {
-        return DB2DataSourceProvider.getConnectionsProps();
+        Map<String, String> props = new HashMap<String, String>();
+        props.putAll(DB2DataSourceProvider.getConnectionsProps());
+        if (getContainer().isConnectionReadOnly()) {
+            props.put(DB2Constants.PROP_READ_ONLY, "true");
+        }
+        return props;
     }
 
     @Override