Remove support for multiple tag types.

This commit removes the class hierarchies for TagKey, TagValue, and Tag.  The
three classes are now concrete AutoValue classes that use Strings for keys and
values.  The serialization format isn't affected, because it already only
supported string tags.

1 files changed, 10 insertions, 10 deletions

diff --git a/examples/src/main/java/io/opencensus/examples/stats/StatsRunner.java b/examples/src/main/java/io/opencensus/examples/stats/StatsRunner.java
index 695724e3..e3b50b2a 100644
--- a/examples/src/main/java/io/opencensus/examples/stats/StatsRunner.java
+++ b/examples/src/main/java/io/opencensus/examples/stats/StatsRunner.java
@@ -21,23 +21,23 @@ import io.opencensus.stats.Measure.MeasureDouble;
 import io.opencensus.stats.Stats;
 import io.opencensus.stats.StatsRecorder;
 import io.opencensus.tags.TagContext;
-import io.opencensus.tags.TagKey.TagKeyString;
-import io.opencensus.tags.TagValue.TagValueString;
+import io.opencensus.tags.TagKey;
+import io.opencensus.tags.TagValue;
 import io.opencensus.tags.Tagger;
 import io.opencensus.tags.Tags;
 
 /** Simple program that uses Stats contexts. */
 public class StatsRunner {
 
-  private static final TagKeyString K1 = TagKeyString.create("k1");
-  private static final TagKeyString K2 = TagKeyString.create("k2");
-  private static final TagKeyString K3 = TagKeyString.create("k3");
-  private static final TagKeyString K4 = TagKeyString.create("k4");
+  private static final TagKey K1 = TagKey.create("k1");
+  private static final TagKey K2 = TagKey.create("k2");
+  private static final TagKey K3 = TagKey.create("k3");
+  private static final TagKey K4 = TagKey.create("k4");
 
-  private static final TagValueString V1 = TagValueString.create("v1");
-  private static final TagValueString V2 = TagValueString.create("v2");
-  private static final TagValueString V3 = TagValueString.create("v3");
-  private static final TagValueString V4 = TagValueString.create("v4");
+  private static final TagValue V1 = TagValue.create("v1");
+  private static final TagValue V2 = TagValue.create("v2");
+  private static final TagValue V3 = TagValue.create("v3");
+  private static final TagValue V4 = TagValue.create("v4");
 
   private static final String UNIT = "1";
   private static final MeasureDouble M1 = MeasureDouble.create("m1", "1st test metric", UNIT);