1 files changed, 54 insertions, 0 deletions
diff --git a/platform/vcs-api/vcs-api-core/src/com/intellij/openapi/vcs/changes/ContentRevision.java b/platform/vcs-api/vcs-api-core/src/com/intellij/openapi/vcs/changes/ContentRevision.java
new file mode 100644
index 000000000000..de5944ac9b3c
--- /dev/null
+++ b/platform/vcs-api/vcs-api-core/src/com/intellij/openapi/vcs/changes/ContentRevision.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2000-2014 JetBrains s.r.o.
+ *
+ * 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.intellij.openapi.vcs.changes;
+
+import com.intellij.openapi.vcs.FilePath;
+import com.intellij.openapi.vcs.VcsException;
+import com.intellij.openapi.vcs.history.VcsRevisionNumber;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * @author max
+ */
+public interface ContentRevision {
+  /**
+   * Content of the revision. Implementers are encouraged to lazy implement this especially when it requires connection to the
+   * version control server or something.
+   * Might return null in case if file path denotes a directory or content is impossible to retreive.
+   *
+   * @return content of the revision
+   * @throws com.intellij.openapi.vcs.VcsException in case when content retrieval fails
+   */
+  @Nullable
+  String getContent() throws VcsException;
+
+  /**
+   * @return file path of the revision
+   */
+  @NotNull
+  FilePath getFile();
+
+  /**
+   * Revision ID. Content revisions with same file path and revision number are considered to be equal and must have same content unless
+   * {@link VcsRevisionNumber#NULL} is returned. Use {@link VcsRevisionNumber#NULL} when revision number is not applicable like for
+   * the currently uncommited revision.
+   * @return revision ID in terms of version control
+   */
+  @NotNull
+  VcsRevisionNumber getRevisionNumber();
+}