binding/mdsal-binding-util/src/main/java/org/opendaylight/mdsal/binding/util/TypedTransaction.java

   1 /*
   2  * Copyright © 2018 Red Hat, Inc. and others.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.mdsal.binding.util;
   9
  10 import com.google.common.util.concurrent.FluentFuture;
  11 import org.opendaylight.mdsal.binding.api.QueryOperations;
  12 import org.opendaylight.mdsal.binding.api.Transaction;
  13 import org.opendaylight.mdsal.binding.api.query.QueryExpression;
  14 import org.opendaylight.mdsal.binding.api.query.QueryResult;
  15 import org.opendaylight.mdsal.binding.spi.ForwardingTransaction;
  16 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  17 import org.opendaylight.yangtools.yang.binding.DataObject;
  18
  19 abstract class TypedTransaction<D extends Datastore, X extends Transaction> extends ForwardingTransaction {
  20     private final LogicalDatastoreType datastoreType;
  21     private final X delegate;
  22
  23     TypedTransaction(final Class<D> datastoreType, final X delegate) {
  24         this.datastoreType = Datastore.toType(datastoreType);
  25         this.delegate = delegate;
  26     }
  27
  28     @Override
  29     protected final X delegate() {
  30         return delegate;
  31     }
  32
  33     final LogicalDatastoreType getDatastoreType() {
  34         return datastoreType;
  35     }
  36
  37     final <T extends DataObject> FluentFuture<QueryResult<T>> doExecute(final QueryExpression<T> query) {
  38         if (delegate instanceof QueryOperations) {
  39             return ((QueryOperations) delegate).execute(datastoreType, query);
  40         }
  41         throw new UnsupportedOperationException("Query execution requires backend support");
  42     }
  43 }