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[gb-231r1-is01/GB_2.3_IS01.git] / cts / tools / signature-tools / src / signature / compare / model / IUpperBoundsDelta.java

diff --git a/cts/tools/signature-tools/src/signature/compare/model/IUpperBoundsDelta.java b/cts/tools/signature-tools/src/signature/compare/model/IUpperBoundsDelta.java
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+++ b/cts/tools/signature-tools/src/signature/compare/model/IUpperBoundsDelta.java
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+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * 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 signature.compare.model;
+
+import java.util.List;
+import java.util.Set;
+
+import signature.model.ITypeReference;
+
+/**
+ * {@code IUpperBoundsDelta} models the delta between two {@link List
+ * <ITypeReference>} instances.
+ * <p>
+ * This interface is aware, that for the first argument, the order of the upper
+ * bounds is relevant (for erasure).
+ */
+public interface IUpperBoundsDelta extends IDelta<List<ITypeReference>> {
+    
+    /**
+     * Returns the upper bound delta of the first upper bound or {@code null} if
+     * no delta is available.
+     *
+     * @return the upper bound delta of the first upper bound, maybe {@code
+     *         null}
+     */
+    ITypeReferenceDelta<?> getFirstUpperBoundDelta();
+
+    /**
+     * Returns a set of remaining upper bound deltas or {@code null} if no
+     * deltas are available.
+     *
+     * @return a set of remaining upper bound deltas, maybe {@code null}
+     */
+    Set<ITypeReferenceDelta<?>> getRemainingUpperBoundDeltas();
+}