Guava: Use Objects.hashCode() to implement .hashCode().

enabler/src/de/schildbach/pte/dto/Departure.java

@@ -97,22 +97,7 @@ public final class Departure implements Serializable
 	@Override
 	public int hashCode()
 	{
-		int hashCode = 0;
-		hashCode += nullSafeHashCode(plannedTime);
-		hashCode *= 29;
-		hashCode += nullSafeHashCode(predictedTime);
-		hashCode *= 29;
-		hashCode += nullSafeHashCode(line);
-		hashCode *= 29;
-		hashCode += nullSafeHashCode(destination);
-		return hashCode;
-	}
-
-	private int nullSafeHashCode(final Object o)
-	{
-		if (o == null)
-			return 0;
-		return o.hashCode();
+		return Objects.hashCode(plannedTime, predictedTime, line, destination);
 	}
 
 	public static final Comparator<Departure> TIME_COMPARATOR = new Comparator<Departure>()

enabler/src/de/schildbach/pte/dto/Fare.java

@@ -71,4 +71,10 @@ public final class Fare implements Serializable
 			return false;
 		return true;
 	}
+
+	@Override
+	public int hashCode()
+	{
+		return Objects.hashCode(network, type, currency, fare, unitName, units);
+	}
 }

enabler/src/de/schildbach/pte/dto/Line.java

@@ -102,7 +102,7 @@ public final class Line implements Serializable, Comparable<Line>
 	@Override
 	public int hashCode()
 	{
-		return nullSafeHashCode(label);
+		return Objects.hashCode(label);
 	}
 
 	public int compareTo(final Line other)
@@ -117,11 +117,4 @@ public final class Line implements Serializable, Comparable<Line>
 
 		return this.label.compareTo(other.label);
 	}
-
-	private int nullSafeHashCode(final Object o)
-	{
-		if (o == null)
-			return 0;
-		return o.hashCode();
-	}
 }

enabler/src/de/schildbach/pte/dto/LineDestination.java

@@ -64,17 +64,6 @@ public final class LineDestination implements Serializable
 	@Override
 	public int hashCode()
 	{
-		int hashCode = 0;
-		hashCode += nullSafeHashCode(line);
-		hashCode *= 29;
-		hashCode += nullSafeHashCode(destination);
-		return hashCode;
-	}
-
-	private int nullSafeHashCode(final Object o)
-	{
-		if (o == null)
-			return 0;
-		return o.hashCode();
+		return Objects.hashCode(line, destination);
 	}
 }

enabler/src/de/schildbach/pte/dto/Location.java

@@ -185,26 +185,9 @@ public final class Location implements Serializable
 	@Override
 	public int hashCode()
 	{
-		int hashCode = 0;
-		hashCode += type.hashCode();
-		hashCode *= 29;
 		if (id != null)
-		{
-			hashCode += id.hashCode();
-		}
-		else if (lat != 0 || lon != 0)
-		{
-			hashCode += lat;
-			hashCode *= 29;
-			hashCode += lon;
-		}
-		return hashCode;
-	}
-
-	private int nullSafeHashCode(final Object o)
-	{
-		if (o == null)
-			return 0;
-		return o.hashCode();
+			return Objects.hashCode(type, id);
+		else
+			return Objects.hashCode(type, lat, lon);
 	}
 }

enabler/src/de/schildbach/pte/dto/Point.java

@@ -19,6 +19,8 @@ package de.schildbach.pte.dto;
 
 import java.io.Serializable;
 
+import com.google.common.base.Objects;
+
 /**
  * @author Andreas Schildbach
  */
@@ -61,6 +63,6 @@ public final class Point implements Serializable
 	@Override
 	public int hashCode()
 	{
-		return lat + 27 * lon;
+		return Objects.hashCode(lat, lon);
 	}
 }

enabler/src/de/schildbach/pte/dto/Position.java

@@ -63,6 +63,12 @@ public final class Position implements Serializable
 		return true;
 	}
 
+	@Override
+	public int hashCode()
+	{
+		return Objects.hashCode(name, section);
+	}
+
 	@Override
 	public String toString()
 	{
@@ -71,20 +77,4 @@ public final class Position implements Serializable
 			builder.append(section);
 		return builder.toString();
 	}
-
-	@Override
-	public int hashCode()
-	{
-		int hashCode = 0;
-		hashCode += name.hashCode();
-		hashCode += nullSafeHashCode(section);
-		return hashCode;
-	}
-
-	private int nullSafeHashCode(final Object o)
-	{
-		if (o == null)
-			return 0;
-		return o.hashCode();
-	}
 }

enabler/src/de/schildbach/pte/dto/StationDepartures.java

@@ -67,4 +67,10 @@ public final class StationDepartures implements Serializable
 			return false;
 		return true;
 	}
+
+	@Override
+	public int hashCode()
+	{
+		return Objects.hashCode(location, departures, lines);
+	}
 }

enabler/src/de/schildbach/pte/dto/Stop.java

@@ -252,4 +252,12 @@ public final class Stop implements Serializable
 			return false;
 		return true;
 	}
+
+	@Override
+	public int hashCode()
+	{
+		return Objects.hashCode(location, plannedArrivalTime, predictedArrivalTime, plannedArrivalPosition, predictedArrivalPosition,
+				arrivalCancelled, plannedDepartureTime, predictedDepartureTime, plannedDeparturePosition, predictedDeparturePosition,
+				departureCancelled);
+	}
 }

enabler/src/de/schildbach/pte/dto/SuggestedLocation.java

@@ -70,7 +70,7 @@ public final class SuggestedLocation implements Serializable, Comparable<Suggest
 	@Override
 	public int hashCode()
 	{
-		return location.hashCode();
+		return Objects.hashCode(location);
 	}
 
 	@Override

enabler/src/de/schildbach/pte/dto/Trip.java

@@ -227,7 +227,7 @@ public final class Trip implements Serializable
 	@Override
 	public int hashCode()
 	{
-		return getId().hashCode();
+		return Objects.hashCode(getId());
 	}
 
 	public abstract static class Leg implements Serializable