binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/query/DefaultDescendantQueryBuilder.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 org.opendaylight.mdsal.binding.api.query.DescendantQueryBuilder;
  11 import org.opendaylight.mdsal.binding.api.query.MatchBuilderPath;
  12 import org.opendaylight.mdsal.binding.api.query.QueryExpression;
  13 import org.opendaylight.mdsal.binding.api.query.QueryStructureException;
  14 import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTree;
  15 import org.opendaylight.yangtools.yang.binding.ChildOf;
  16 import org.opendaylight.yangtools.yang.binding.ChoiceIn;
  17 import org.opendaylight.yangtools.yang.binding.DataObject;
  18 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  19 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.InstanceIdentifierBuilder;
  20
  21 final class DefaultDescendantQueryBuilder<R extends DataObject, T extends DataObject>
  22         implements DescendantQueryBuilder<T> {
  23     private final InstanceIdentifierBuilder<T> childPath;
  24     private final QueryBuilderState builder;
  25
  26     DefaultDescendantQueryBuilder(final BindingCodecTree codec, final InstanceIdentifier<T> rootPath) {
  27         this.builder = new QueryBuilderState(codec, rootPath);
  28         this.childPath = rootPath.builder();
  29     }
  30
  31     @Override
  32     @SuppressWarnings("unchecked")
  33     public <N extends ChildOf<? super T>> DescendantQueryBuilder<N> extractChild(final Class<N> childClass) {
  34         childPath.child(childClass);
  35         return (DefaultDescendantQueryBuilder<R, N>) this;
  36     }
  37
  38     @Override
  39     @SuppressWarnings("unchecked")
  40     public <C extends ChoiceIn<? super T> & DataObject, N extends ChildOf<? super C>>
  41             DescendantQueryBuilder<N> extractChild(final Class<C> caseClass, final Class<N> childClass) {
  42         childPath.child(caseClass, childClass);
  43         return (DefaultDescendantQueryBuilder<R, N>) this;
  44     }
  45
  46     @Override
  47     public MatchBuilderPath<T, T> matching() {
  48         final InstanceIdentifier<T> selectPath = childPath.build();
  49         builder.setSelectPath(selectPath);
  50         return new DefaultMatchBuilderPath<>(builder, selectPath, childPath);
  51     }
  52
  53     @Override
  54     public QueryExpression<T> build() throws QueryStructureException {
  55         builder.setSelectPath(childPath.build());
  56         return builder.buildQuery();
  57     }
  58 }