com.google.common.base.Equivalence#equivalent ( )源码实例Demo

private static <K, V> void doDifference(Map<? extends K, ? extends V> left, Map<? extends K, ? extends V> right, Equivalence<? super V> valueEquivalence, Map<K, V> onlyOnLeft, Map<K, V> onlyOnRight, Map<K, V> onBoth, Map<K, MapDifference.ValueDifference<V>> differences) {
  for (Entry<? extends K, ? extends V> entry : left.entrySet()) {
    K leftKey = entry.getKey();
    V leftValue = entry.getValue();
    if (right.containsKey(leftKey)) {
      V rightValue = onlyOnRight.remove(leftKey);
      if (valueEquivalence.equivalent(leftValue, rightValue)) {
        onBoth.put(leftKey, leftValue);
      } else {
        differences.put(leftKey, ValueDifferenceImpl.create(leftValue, rightValue));
      }
    } else {
      onlyOnLeft.put(leftKey, leftValue);
    }
  }
}
 

private static <K, V> void doDifference(Map<? extends K, ? extends V> left, Map<? extends K, ? extends V> right, Equivalence<? super V> valueEquivalence, Map<K, V> onlyOnLeft, Map<K, V> onlyOnRight, Map<K, V> onBoth, Map<K, MapDifference.ValueDifference<V>> differences) {
  for (Entry<? extends K, ? extends V> entry : left.entrySet()) {
    K leftKey = entry.getKey();
    V leftValue = entry.getValue();
    if (right.containsKey(leftKey)) {
      V rightValue = onlyOnRight.remove(leftKey);
      if (valueEquivalence.equivalent(leftValue, rightValue)) {
        onBoth.put(leftKey, leftValue);
      } else {
        differences.put(leftKey, ValueDifferenceImpl.create(leftValue, rightValue));
      }
    } else {
      onlyOnLeft.put(leftKey, leftValue);
    }
  }
}
 

private static <K, V> void doDifference(Map<? extends K, ? extends V> left, Map<? extends K, ? extends V> right, Equivalence<? super V> valueEquivalence, Map<K, V> onlyOnLeft, Map<K, V> onlyOnRight, Map<K, V> onBoth, Map<K, MapDifference.ValueDifference<V>> differences) {
  for (Entry<? extends K, ? extends V> entry : left.entrySet()) {
    K leftKey = entry.getKey();
    V leftValue = entry.getValue();
    if (right.containsKey(leftKey)) {
      V rightValue = onlyOnRight.remove(leftKey);
      if (valueEquivalence.equivalent(leftValue, rightValue)) {
        onBoth.put(leftKey, leftValue);
      } else {
        differences.put(leftKey, ValueDifferenceImpl.create(leftValue, rightValue));
      }
    } else {
      onlyOnLeft.put(leftKey, leftValue);
    }
  }
}
 

private static <K, V> void doDifference(Map<? extends K, ? extends V> left, Map<? extends K, ? extends V> right, Equivalence<? super V> valueEquivalence, Map<K, V> onlyOnLeft, Map<K, V> onlyOnRight, Map<K, V> onBoth, Map<K, MapDifference.ValueDifference<V>> differences) {
  for (Entry<? extends K, ? extends V> entry : left.entrySet()) {
    K leftKey = entry.getKey();
    V leftValue = entry.getValue();
    if (right.containsKey(leftKey)) {
      V rightValue = onlyOnRight.remove(leftKey);
      if (valueEquivalence.equivalent(leftValue, rightValue)) {
        onBoth.put(leftKey, leftValue);
      } else {
        differences.put(leftKey, ValueDifferenceImpl.create(leftValue, rightValue));
      }
    } else {
      onlyOnLeft.put(leftKey, leftValue);
    }
  }
}
 

private static <K, V> void doDifference(
    Map<? extends K, ? extends V> left,
    Map<? extends K, ? extends V> right,
    Equivalence<? super V> valueEquivalence,
    Map<K, V> onlyOnLeft,
    Map<K, V> onlyOnRight,
    Map<K, V> onBoth,
    Map<K, MapDifference.ValueDifference<V>> differences) {
  for (Entry<? extends K, ? extends V> entry : left.entrySet()) {
    K leftKey = entry.getKey();
    V leftValue = entry.getValue();
    if (right.containsKey(leftKey)) {
      V rightValue = onlyOnRight.remove(leftKey);
      if (valueEquivalence.equivalent(leftValue, rightValue)) {
        onBoth.put(leftKey, leftValue);
      } else {
        differences.put(leftKey, ValueDifferenceImpl.create(leftValue, rightValue));
      }
    } else {
      onlyOnLeft.put(leftKey, leftValue);
    }
  }
}
 

private boolean predicateBindingsEquivalent(VariablePredicate that, Equivalence<Atomic> equiv){
    IdPredicate thisPredicate = this.getIdPredicate(this.getVarName());
    IdPredicate thatPredicate = that.getIdPredicate(that.getVarName());
    IdPredicate thisRefPredicate = this.getIdPredicate(this.getPredicate());
    IdPredicate thatRefPredicate = that.getIdPredicate(that.getPredicate());
    return (
            (thisPredicate == null) ?
            thisPredicate == thatPredicate :
            equiv.equivalent(thisPredicate, thatPredicate)
    ) && (
            (thisRefPredicate == null) ?
            (thisRefPredicate == thatRefPredicate) :
            equiv.equivalent(thisRefPredicate, thatRefPredicate)
    );
}
 

private boolean isBaseEquivalent(Object obj, Equivalence<Atomic> equivalence){
    if (obj == null || this.getClass() != obj.getClass()) return false;
    if (obj == this) return true;
    AttributeAtom that = (AttributeAtom) obj;
    return equivalence.equivalent(this.attributeIsa(), that.attributeIsa())
            && equivalence.equivalent(this.ownerIsa(), that.ownerIsa());
}