1 files changed, 35 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/pkgcache/FilteringPolicy.java b/src/main/java/com/google/devtools/build/lib/pkgcache/FilteringPolicy.java
new file mode 100644
index 0000000000..ac27fb09dc
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+++ b/src/main/java/com/google/devtools/build/lib/pkgcache/FilteringPolicy.java
@@ -0,0 +1,35 @@
+// Copyright 2014 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package com.google.devtools.build.lib.pkgcache;
+
+import com.google.devtools.build.lib.concurrent.ThreadSafety;
+import com.google.devtools.build.lib.packages.Target;
+
+import java.io.Serializable;
+
+/**
+ * A filtering policy defines how target patterns are matched. For instance, we may wish to select
+ * only tests, no tests, or remove obsolete targets.
+ */
+public interface FilteringPolicy extends Serializable {
+
+  /**
+   * Returns true if this target should be retained.
+   *
+   * @param explicit true iff the label was specified explicitly, as opposed to being discovered by
+   *                 a wildcard.
+   */
+  @ThreadSafety.ThreadSafe
+  boolean shouldRetain(Target target, boolean explicit);
+}