binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/query/AbstractValueMatchBuilder.java

   1 /*
   2  * Copyright (c) 2020 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.mdsal.binding.dom.adapter.query;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import org.eclipse.jdt.annotation.NonNull;
  13 import org.opendaylight.mdsal.binding.api.query.ValueMatch;
  14 import org.opendaylight.mdsal.binding.api.query.ValueMatchBuilder;
  15 import org.opendaylight.mdsal.binding.dom.adapter.query.QueryBuilderState.BoundMethod;
  16 import org.opendaylight.mdsal.dom.api.query.DOMQueryPredicate;
  17 import org.opendaylight.mdsal.dom.api.query.DOMQueryPredicate.Match;
  18 import org.opendaylight.yangtools.yang.binding.DataObject;
  19 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  20 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  21 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  22
  23 abstract class AbstractValueMatchBuilder<T extends DataObject, V> implements ValueMatchBuilder<T, V> {
  24     private final QueryBuilderState builder;
  25     private final InstanceIdentifier<T> select;
  26     private final BoundMethod method;
  27
  28     AbstractValueMatchBuilder(final QueryBuilderState builder, final InstanceIdentifier<T> select,
  29             final BoundMethod method) {
  30         this.builder = requireNonNull(builder);
  31         this.select = requireNonNull(select);
  32         this.method = requireNonNull(method);
  33     }
  34
  35     @Override
  36     public final ValueMatch<T> nonNull() {
  37         return withMatch(Match.exists());
  38     }
  39
  40     @Override
  41     public final ValueMatch<T> isNull() {
  42         return withMatch(Match.exists().negate());
  43     }
  44
  45     @Override
  46     public final ValueMatch<T> valueEquals(final V value) {
  47         return withMatch(Match.valueEquals(value));
  48     }
  49
  50     final YangInstanceIdentifier relativePath() {
  51         return method.parentPath.node(((DataSchemaNode) method.methodCodec.getSchema()).getQName());
  52     }
  53
  54     final @NonNull ValueMatch<T> withMatch(final Match match) {
  55         // FIXME: this does not quite take value codec into account :(
  56         builder.addPredicate(DOMQueryPredicate.of(relativePath(), match));
  57         return new DefaultValueMatch<>(builder, select);
  58     }
  59 }