Examples of com.google.common.collect.ComparisonChain

com.google.common.collect.ComparisonChain
A utility for performing a "lazy" chained comparison statement, which performs comparisons only until it finds a nonzero result. For example:
```
    {@code}public int compareTo(Foo that)  return ComparisonChain.start() .compare(this.aString, that.aString) .compare(this.anInt, that.anInt) .compare(this.anEnum, that.anEnum, Ordering.natural().nullsLast()) .result(); }}
```
The value of this expression will have the same sign as the first nonzero comparison result in the chain, or will be zero if every comparison result was zero.
Once any comparison returns a nonzero value, remaining comparisons are "short-circuited". @author Mark Davis @author Kevin Bourrillion @since Guava release 02


public class ObjectContracts {


    @SuppressWarnings("unchecked")
    public static <T> int compare(T p, T q, String propertyNames) {
        ComparisonChain chain = ComparisonChain.start();
        for (final Clause clause : iterable(propertyNames)) {
            final Comparable<T> propertyValue = (Comparable<T>) clause.getValueOf(p);
            final Comparable<T> propertyValue2 = (Comparable<T>) clause.getValueOf(q);
            chain = chain.compare(propertyValue, propertyValue2, clause.getDirection().getOrdering());
        }
        return chain.result();
    }

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public class ObjectContracts {


    @SuppressWarnings("unchecked")
    public static <T> int compare(T p, T q, String propertyNames) {
        ComparisonChain chain = ComparisonChain.start();
        for (final Clause clause : iterable(propertyNames)) {
            final Comparable<T> propertyValue = (Comparable<T>) clause.getValueOf(p);
            final Comparable<T> propertyValue2 = (Comparable<T>) clause.getValueOf(q);
            chain = chain.compare(propertyValue, propertyValue2, clause.getDirection().getOrdering());
        }
        return chain.result();
    }

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public class ObjectContracts {
    


    @SuppressWarnings("unchecked")
    public static <T> int compare(T p, T q, String propertyNames) {
        ComparisonChain chain = ComparisonChain.start();
        for (final Clause clause : iterable(propertyNames)) {
            final Comparable<T> propertyValue = (Comparable<T>) clause.getValueOf(p);
            final Comparable<T> propertyValue2 = (Comparable<T>) clause.getValueOf(q);
            chain = chain.compare(propertyValue, propertyValue2, clause.getDirection().getOrdering());
        }
        return chain.result();
    }

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      Builder<Hardware> hardware = ImmutableSortedSet.orderedBy(new Comparator<Hardware>() {
         @Override
         public int compare(Hardware h1, Hardware h2) {
            List<? extends Volume> volumes1 = h1.getVolumes();
            List<? extends Volume> volumes2 = h2.getVolumes();
            ComparisonChain comparisonChain = ComparisonChain.start().compare(getCores(h1), getCores(h2))
                    .compare(h1.getRam(), h2.getRam())
                    .compare(getSpace(h1), getSpace(h2))
                    .compare(getBootableDeviceType(h1), getBootableDeviceType(h2));
            if (!volumes1.isEmpty() && !volumes2.isEmpty() && volumes1.size() == volumes2.size()) {
               for (int i = 0; i < volumes1.size(); i++) {
                  comparisonChain.compare(volumes1.get(i).getType(), volumes2.get(i).getType());
               }
            }
            return comparisonChain.result();
         }
      });
      for (VirtualGuestBlockDevice blockDevice : virtualGuestConfiguration.getVirtualGuestBlockDevices()) {
         float capacity = blockDevice.getVirtualDiskImage().getCapacity();
         Type type = blockDevice.getVirtualGuest().isLocalDiskFlag() ? Type.LOCAL : Type.SAN;

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            throw new ClassCastException(
                    "Object to compare must be of type DefaultPmtKey. Object is " + o == null ? "null" : o.getClass()
                            .getName());
        }
        DefaultPmtKey that = (DefaultPmtKey) o;
        ComparisonChain cmpChain = ComparisonChain.start()
                .compare(firstKey, that.firstKey)
                .compare(pmtPeriod, that.pmtPeriod)
                .compare(count, that.count);


        int result = cmpChain.result();
        if (result != 0) {
            return result;
        }


        // It should never get to this point in the code. Because we are using an Interner, two objects that are equal
        // are the same object, so the first check will return 0. If the objects are not equal, at least one of the
        // three values we check before the list will be unequal, so it should never have to compare the contents of the
        // lists (thankfully).
        for (int i = 0; i < keys.size(); i++) {
            result = cmpChain.compare(keys.get(i), that.keys.get(i)).result();
            if (result != 0) return result;
        }


        return result;
    }

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      Builder<Hardware> hardware = ImmutableSortedSet.orderedBy(new Comparator<Hardware>() {
         @Override
         public int compare(Hardware h1, Hardware h2) {
            List<? extends Volume> volumes1 = h1.getVolumes();
            List<? extends Volume> volumes2 = h2.getVolumes();
            ComparisonChain comparisonChain = ComparisonChain.start().compare(getCores(h1), getCores(h2))
                    .compare(h1.getRam(), h2.getRam())
                    .compare(getSpace(h1), getSpace(h2))
                    .compare(getBootableDeviceType(h1), getBootableDeviceType(h2));
            if (!volumes1.isEmpty() && !volumes2.isEmpty() && volumes1.size() == volumes2.size()) {
               for (int i = 0; i < volumes1.size(); i++) {
                  comparisonChain.compare(volumes1.get(i).getType(), volumes2.get(i).getType());
               }
            }
            return comparisonChain.result();
         }
      });
      for (VirtualGuestBlockDevice blockDevice : virtualGuestConfiguration.getVirtualGuestBlockDevices()) {
         float capacity = blockDevice.getVirtualDiskImage().getCapacity();
         Type type = blockDevice.getVirtualGuest().isLocalDiskFlag() ? Type.LOCAL : Type.SAN;

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co.da.jmtg.amort.DefaultPmtKey

org.apache.isis.applib.util.ObjectContracts

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