yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/ReusableImmutableNormalizedNodeStreamWriter.java

   1 /*
   2  * Copyright (c) 2019 PANTHEON.tech, s.r.o. and others.  All rights reserved.
   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.yangtools.yang.data.impl.schema;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.annotations.Beta;
  13 import org.eclipse.jdt.annotation.NonNull;
  14 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  15 import org.opendaylight.yangtools.yang.data.api.schema.stream.ReusableStreamReceiver;
  16 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableLeafNodeBuilder;
  17 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableLeafSetEntryNodeBuilder;
  18
  19 /**
  20  * A reusable variant of {@link ImmutableNormalizedNodeStreamWriter}. It can be reset into its base state and used for
  21  * multiple streaming sessions.
  22  */
  23 @Beta
  24 public final class ReusableImmutableNormalizedNodeStreamWriter extends ImmutableNormalizedNodeStreamWriter
  25         implements ReusableStreamReceiver {
  26     private final NormalizedNodeResultBuilder builder;
  27
  28     private final ImmutableLeafSetEntryNodeBuilder<?> leafsetEntryBuilder = ImmutableLeafSetEntryNodeBuilder.create();
  29     private final ImmutableLeafNodeBuilder<?> leafNodeBuilder = new ImmutableLeafNodeBuilder<>();
  30
  31     private ReusableImmutableNormalizedNodeStreamWriter(final NormalizedNodeResultBuilder builder) {
  32         super(builder);
  33         this.builder = requireNonNull(builder);
  34     }
  35
  36     public static @NonNull ReusableImmutableNormalizedNodeStreamWriter create() {
  37         return new ReusableImmutableNormalizedNodeStreamWriter(new NormalizedNodeResultBuilder());
  38     }
  39
  40     @Override
  41     public void reset() {
  42         builder.result().reset();
  43         reset(builder);
  44     }
  45
  46     @Override
  47     public NormalizedNode getResult() {
  48         return builder.result().getResult();
  49     }
  50
  51     @Override
  52     @SuppressWarnings("unchecked")
  53     <T> ImmutableLeafNodeBuilder<T> leafNodeBuilder() {
  54         return (ImmutableLeafNodeBuilder<T>) leafNodeBuilder;
  55     }
  56
  57     @Override
  58     @SuppressWarnings("unchecked")
  59     <T> ImmutableLeafSetEntryNodeBuilder<T> leafsetEntryNodeBuilder() {
  60         return (ImmutableLeafSetEntryNodeBuilder<T>) leafsetEntryBuilder;
  61     }
  62 }