1 files changed, 53 insertions, 0 deletions
diff --git a/main/src/cgeo/geocaching/utils/UncertainProperty.java b/main/src/cgeo/geocaching/utils/UncertainProperty.java
new file mode 100644
index 0000000..e8686e3
--- /dev/null
+++ b/main/src/cgeo/geocaching/utils/UncertainProperty.java
@@ -0,0 +1,53 @@
+package cgeo.geocaching.utils;
+
+import cgeo.geocaching.connector.gc.Tile;
+
+/**
+ * Property with certainty. When merging properties, the one with higher certainty wins.
+ * 
+ * @param <T>
+ */
+public class UncertainProperty<T> {
+
+    private final T value;
+    private final int certaintyLevel;
+
+    public UncertainProperty(T value) {
+        this(value, Tile.ZOOMLEVEL_MAX + 1);
+    }
+
+    public UncertainProperty(T value, int certaintyLevel) {
+        this.value = value;
+        this.certaintyLevel = certaintyLevel;
+    }
+
+    public T getValue() {
+        return value;
+    }
+
+    public int getCertaintyLevel() {
+        return certaintyLevel;
+    }
+
+    public UncertainProperty<T> getMergedProperty(final UncertainProperty<T> other) {
+        if (null == other || null == other.value) {
+            return this;
+        }
+        if (null == this.value) {
+            return other;
+        }
+        if (other.certaintyLevel > certaintyLevel) {
+            return other;
+        }
+
+        return this;
+    }
+
+    public static <T> UncertainProperty<T> getMergedProperty(UncertainProperty<T> property, UncertainProperty<T> otherProperty) {
+        if (null == property) {
+            return otherProperty;
+        }
+        return property.getMergedProperty(otherProperty);
+    }
+
+}