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.Exists;
  18 import org.opendaylight.mdsal.dom.api.query.DOMQueryPredicate.NotExists;
  19 import org.opendaylight.mdsal.dom.api.query.DOMQueryPredicate.ValueEquals;
  20 import org.opendaylight.yangtools.yang.binding.DataObject;
  21 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  22 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  23 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  24
  25 abstract class AbstractValueMatchBuilder<T extends DataObject, V> implements ValueMatchBuilder<T, V> {
  26     private final QueryBuilderState builder;
  27     private final InstanceIdentifier<T> select;
  28     private final BoundMethod method;
  29
  30     AbstractValueMatchBuilder(final QueryBuilderState builder, final InstanceIdentifier<T> select,
  31             final BoundMethod method) {
  32         this.builder = requireNonNull(builder);
  33         this.select = requireNonNull(select);
  34         this.method = requireNonNull(method);
  35     }
  36
  37     @Override
  38     public final ValueMatch<T> nonNull() {
  39         return withPredicate(new Exists(relativePath()));
  40     }
  41
  42     @Override
  43     public final ValueMatch<T> isNull() {
  44         return withPredicate(new NotExists(relativePath()));
  45     }
  46
  47     @Override
  48     public final ValueMatch<T> valueEquals(final V value) {
  49         return withPredicate(new ValueEquals<>(relativePath(), value));
  50     }
  51
  52     final YangInstanceIdentifier relativePath() {
  53         return method.parentPath.node(((DataSchemaNode) method.methodCodec.getSchema()).getQName());
  54     }
  55
  56     final @NonNull ValueMatch<T> withPredicate(final DOMQueryPredicate predicate) {
  57         // FIXME: this does not quite take value codec into account :(
  58         builder.addPredicate(predicate);
  59         return new DefaultValueMatch<>(builder, select);
  60     }
  61 }