add Metadata.hashCode
diff --git a/src/com/google/enterprise/adaptor/Metadata.java b/src/com/google/enterprise/adaptor/Metadata.java
index bd17db2..f0d154f 100644
--- a/src/com/google/enterprise/adaptor/Metadata.java
+++ b/src/com/google/enterprise/adaptor/Metadata.java
@@ -192,6 +192,7 @@
}
/** True if exactly the same key-values are represented. */
+ @Override
public boolean equals(Object o) {
if (!(o instanceof Metadata)) {
return false;
@@ -203,6 +204,11 @@
return mappings.equals(other.mappings);
}
+ @Override
+ public int hashCode() {
+ return mappings.hashCode();
+ }
+
/** True with 0 entries. */
public boolean isEmpty() {
return mappings.isEmpty();
diff --git a/test/com/google/enterprise/adaptor/MetadataTest.java b/test/com/google/enterprise/adaptor/MetadataTest.java
index f915c7f..fd3fcea 100644
--- a/test/com/google/enterprise/adaptor/MetadataTest.java
+++ b/test/com/google/enterprise/adaptor/MetadataTest.java
@@ -360,6 +360,35 @@
}
@Test
+ public void testHashCode() {
+ Metadata m1 = new Metadata();
+ m1.add("foo", "home");
+ Metadata m2 = new Metadata();
+ m2.add("foo", "home");
+ assertEquals(m1.hashCode(), m2.hashCode());
+
+ m1.add("foo", "bar");
+ m2.add("foo", "bar");
+ assertEquals(m1.hashCode(), m2.hashCode());
+
+ m1.set("foo", "high");
+ m2.set("foo", "low");
+ assertFalse(m1.hashCode() == m2.hashCode());
+
+ m2.set("foo", "high");
+ assertEquals(m1.hashCode(), m2.hashCode());
+
+ m1.set("bar", makeSet("floor", "door"));
+ m2.set("bar", makeSet("floor", "door"));
+ assertEquals(m1.hashCode(), m2.hashCode());
+
+ m1.set("bar", makeSet("near", "far"));
+ assertFalse(m1.hashCode() == m2.hashCode());
+ m2.set("bar", makeSet("near", "far"));
+ assertEquals(m1.hashCode(), m2.hashCode());
+ }
+
+ @Test
public void testUnmodifiableSetSingle() {
Metadata m = new Metadata().unmodifiableView();
thrown.expect(UnsupportedOperationException.class);
