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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SYNC_ENGINE_COMMIT_PROCESSOR_H_
#define SYNC_ENGINE_COMMIT_PROCESSOR_H_
#include <map>
#include <vector>
#include "base/basictypes.h"
#include "sync/base/sync_export.h"
#include "sync/internal_api/public/base/model_type.h"
#include "sync/internal_api/public/engine/model_safe_worker.h"
#include "sync/sessions/model_type_registry.h"
namespace syncer {
namespace syncable {
class Directory;
} // namespace syncable
class CommitContributor;
class CommitContribution;
// This class manages the set of per-type committer objects.
//
// It owns these types and hides the details of iterating over all of them.
// Many methods allow the caller to specify a subset of types on which the
// operation is to be applied. It is a logic error if the supplied set of types
// contains a type which was not previously registered.
class SYNC_EXPORT_PRIVATE CommitProcessor {
public:
typedef std::map<ModelType, CommitContribution*> ContributionMap;
// Contructs a CommitProcessor from a map of CommitContributors.
// The CommitProcessor does not own this map.
explicit CommitProcessor(CommitContributorMap* commit_contributor_map);
~CommitProcessor();
// Gathers a set of contributions to be used to populate a commit message.
//
// For each of the |commit_types| in this CommitProcessor's CommitContributor
// map, gather any entries queued for commit into CommitContributions. The
// total number of entries in all the returned CommitContributions shall not
// exceed |max_entries|.
void GatherCommitContributions(
ModelTypeSet commit_types,
size_t max_entries,
ContributionMap* contributions);
private:
// A map of 'commit contributors', one for each enabled type.
CommitContributorMap* commit_contributor_map_;
DISALLOW_COPY_AND_ASSIGN(CommitProcessor);
};
} // namespace syncer
#endif // SYNC_ENGINE_COMMIT_PROCESSOR_H_
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