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/*
* 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();
}
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