Generic driver: system schema detection + HANA system schemas

Former-commit-id: 7370af67

plugins/org.jkiss.dbeaver.ext.generic/src/org/jkiss/dbeaver/ext/generic/model/GenericSchema.java

@@ -19,6 +19,7 @@ package org.jkiss.dbeaver.ext.generic.model;
 import org.jkiss.code.NotNull;
 import org.jkiss.code.Nullable;
 import org.jkiss.dbeaver.DBException;
+import org.jkiss.dbeaver.model.DBPSystemObject;
 import org.jkiss.dbeaver.model.meta.Property;
 import org.jkiss.dbeaver.model.runtime.DBRProgressMonitor;
 import org.jkiss.dbeaver.model.struct.DBSEntity;
@@ -28,7 +29,7 @@ import org.jkiss.dbeaver.model.struct.rdb.DBSSchema;
 /**
  * GenericSchema
  */
-public class GenericSchema extends GenericObjectContainer implements DBSSchema
+public class GenericSchema extends GenericObjectContainer implements DBSSchema, DBPSystemObject
 {
     @Nullable
     private GenericCatalog catalog;
@@ -89,4 +90,9 @@ public class GenericSchema extends GenericObjectContainer implements DBSSchema
     {
         return GenericTable.class;
     }
+
+    @Override
+    public boolean isSystem() {
+        return getDataSource().getMetaModel().isSystemSchema(this);
+    }
 }

plugins/org.jkiss.dbeaver.ext.generic/src/org/jkiss/dbeaver/ext/generic/model/meta/GenericMetaModel.java

@@ -103,6 +103,10 @@ public class GenericMetaModel {
     //////////////////////////////////////////////////////
     // Schema load
 
+    public boolean isSystemSchema(GenericSchema schema) {
+        return false;
+    }
+
     public List<GenericSchema> loadSchemas(JDBCSession session, GenericDataSource dataSource, GenericCatalog catalog)
         throws DBException
     {

plugins/org.jkiss.dbeaver.ext.hana/src/org/jkiss/dbeaver/ext/hana/model/HANAMetaModel.java

@@ -253,15 +253,21 @@ public class HANAMetaModel extends GenericMetaModel
     public String getAutoIncrementClause(GenericTableColumn column) {
         return "GENERATED ALWAYS AS IDENTITY";
     }
-    
+
+    @Override
+    public boolean isSystemSchema(GenericSchema schema) {
+        String schemaName = schema.getName();
+        return schemaName.startsWith("_SYS_") ||
+            schemaName.startsWith("SAP_") ||
+            schemaName.startsWith("HANA_");
+    }
+
     @Override
     public boolean isSystemTable(GenericTableBase table) {
         // empty schemas are still shown, so hiding everything in system schemas looks strange
         //if (table.getSchema().getName().startsWith("_SYS_"))
         //    return true;
-        if (table.getName().startsWith("_SYS_"))
-            return true;
-        return false;
+        return table.getName().startsWith("_SYS_");
     }
     
     @Override