yang/yang-parser-impl/src/main/java/org/opendaylight/yangtools/yang/parser/builder/util/Comparators.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. 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.parser.builder.util;
   9
  10 import com.google.common.collect.Iterables;
  11 import java.util.Comparator;
  12 import java.util.Iterator;
  13 import org.opendaylight.yangtools.yang.common.QName;
  14 import org.opendaylight.yangtools.yang.model.api.AugmentationSchema;
  15 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
  16 import org.opendaylight.yangtools.yang.parser.builder.api.AugmentationSchemaBuilder;
  17
  18 /**
  19  * @deprecated Pre-Beryllium implementation, scheduled for removal.
  20  */
  21 @Deprecated
  22 public final class Comparators {
  23
  24     /**
  25      * Comparator based on alphabetical order of local name of SchemaNode's
  26      * qname.
  27      */
  28     public static final SchemaNodeComparator SCHEMA_NODE_COMP = new SchemaNodeComparator();
  29
  30     /**
  31      * Comparator based on augment target path.
  32      */
  33     public static final AugmentComparator AUGMENT_COMP = new AugmentComparator();
  34
  35     public static final AugmentBuilderComparator AUGMENT_BUILDER_COMP = new AugmentBuilderComparator();
  36
  37     private Comparators() {
  38     }
  39
  40     private static final class SchemaNodeComparator implements Comparator<SchemaNode> {
  41         @Override
  42         public int compare(final SchemaNode o1, final SchemaNode o2) {
  43             return o1.getQName().compareTo(o2.getQName());
  44         }
  45     }
  46
  47     private static final class AugmentBuilderComparator implements Comparator<AugmentationSchemaBuilder> {
  48         @Override
  49         public int compare(final AugmentationSchemaBuilder o1, final AugmentationSchemaBuilder o2) {
  50             int length1 = Iterables.size(o1.getTargetPath().getPathFromRoot());
  51             int length2 = Iterables.size(o2.getTargetPath().getPathFromRoot());
  52             return length1 - length2;
  53         }
  54     }
  55
  56     private static final class AugmentComparator implements Comparator<AugmentationSchema> {
  57         @Override
  58         public int compare(final AugmentationSchema augSchema1, final AugmentationSchema augSchema2) {
  59             final Iterator<QName> thisIt = augSchema1.getTargetPath().getPathFromRoot().iterator();
  60             final Iterator<QName> otherIt = augSchema2.getTargetPath().getPathFromRoot().iterator();
  61
  62             while (thisIt.hasNext()) {
  63                 if (otherIt.hasNext()) {
  64                     final int comp = thisIt.next().compareTo(otherIt.next());
  65                     if (comp != 0) {
  66                         return comp;
  67                     }
  68                 } else {
  69                     return 1;
  70                 }
  71             }
  72             if (otherIt.hasNext()) {
  73                 return -1;
  74             }
  75             return 0;
  76         }
  77
  78     }
  79
  80 }