binding/mdsal-binding-model-api/src/main/java/org/opendaylight/mdsal/binding/model/api/Restrictions.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.mdsal.binding.model.api;
   9
  10 import com.google.common.annotations.Beta;
  11 import com.google.common.collect.ImmutableList;
  12 import java.util.List;
  13 import java.util.Optional;
  14 import org.eclipse.jdt.annotation.NonNull;
  15 import org.eclipse.jdt.annotation.Nullable;
  16 import org.opendaylight.yangtools.yang.model.api.type.LengthConstraint;
  17 import org.opendaylight.yangtools.yang.model.api.type.PatternConstraint;
  18 import org.opendaylight.yangtools.yang.model.api.type.RangeConstraint;
  19
  20 // FIXME: MDSAL-85: specialize for supported types
  21 @Beta
  22 public final class Restrictions {
  23     private static final @NonNull Restrictions EMPTY = new Restrictions(null, null, ImmutableList.of());
  24
  25     private final LengthConstraint lengthConstraint;
  26     // FIXME: MDSAL-85: this is applicable only to int/uint/decimal types and it needs to be captured in the type
  27     //                  itself
  28     private final RangeConstraint<?> rangeConstraint;
  29     private final ImmutableList<PatternConstraint> patternConstraints;
  30
  31     private Restrictions(final LengthConstraint lengthConstraint, final RangeConstraint<?> rangeConstraint,
  32             final List<PatternConstraint> patternConstraints) {
  33         this.lengthConstraint = lengthConstraint;
  34         this.rangeConstraint = rangeConstraint;
  35         this.patternConstraints = ImmutableList.copyOf(patternConstraints);
  36     }
  37
  38     public static @NonNull Restrictions empty() {
  39         return EMPTY;
  40     }
  41
  42     public static @NonNull Restrictions of(final @Nullable LengthConstraint lengthConstraint) {
  43         return lengthConstraint == null ? EMPTY : new Restrictions(lengthConstraint, null, ImmutableList.of());
  44     }
  45
  46     public static @NonNull Restrictions of(final @Nullable RangeConstraint<?> rangeConstraint) {
  47         return rangeConstraint == null ? EMPTY : new Restrictions(null, rangeConstraint, ImmutableList.of());
  48     }
  49
  50     public static @NonNull Restrictions of(final List<PatternConstraint> patternConstraints,
  51             final @Nullable LengthConstraint lengthConstraint) {
  52         return patternConstraints.isEmpty() && lengthConstraint == null ? EMPTY
  53             : new Restrictions(lengthConstraint, null, patternConstraints);
  54     }
  55
  56     public Optional<LengthConstraint> getLengthConstraint() {
  57         return Optional.ofNullable(lengthConstraint);
  58     }
  59
  60     public List<PatternConstraint> getPatternConstraints() {
  61         return patternConstraints;
  62     }
  63
  64     public Optional<RangeConstraint<?>> getRangeConstraint() {
  65         return Optional.ofNullable(rangeConstraint);
  66     }
  67
  68     public boolean isEmpty() {
  69         return lengthConstraint == null && rangeConstraint == null && patternConstraints.isEmpty();
  70     }
  71 }