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      1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_INDEX_WRITER_H_
      6 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_INDEX_WRITER_H_
      7 
      8 #include <map>
      9 #include <vector>
     10 
     11 #include "base/basictypes.h"
     12 #include "base/memory/scoped_vector.h"
     13 #include "content/browser/indexed_db/indexed_db_backing_store.h"
     14 #include "content/browser/indexed_db/indexed_db_database.h"
     15 #include "content/browser/indexed_db/indexed_db_metadata.h"
     16 #include "content/common/indexed_db/indexed_db_key_path.h"
     17 
     18 namespace content {
     19 
     20 class IndexedDBTransaction;
     21 struct IndexedDBObjectStoreMetadata;
     22 
     23 class IndexWriter {
     24  public:
     25   explicit IndexWriter(const IndexedDBIndexMetadata& index_metadata);
     26 
     27   IndexWriter(const IndexedDBIndexMetadata& index_metadata,
     28               const IndexedDBDatabase::IndexKeys& index_keys);
     29 
     30   bool VerifyIndexKeys(IndexedDBBackingStore* store,
     31                        IndexedDBBackingStore::Transaction* transaction,
     32                        int64 database_id,
     33                        int64 object_store_id,
     34                        int64 index_id,
     35                        bool* can_add_keys,
     36                        const IndexedDBKey& primary_key,
     37                        base::string16* error_message) const WARN_UNUSED_RESULT;
     38 
     39   void WriteIndexKeys(const IndexedDBBackingStore::RecordIdentifier& record,
     40                       IndexedDBBackingStore* store,
     41                       IndexedDBBackingStore::Transaction* transaction,
     42                       int64 database_id,
     43                       int64 object_store_id) const;
     44 
     45   ~IndexWriter();
     46 
     47  private:
     48   bool AddingKeyAllowed(IndexedDBBackingStore* store,
     49                         IndexedDBBackingStore::Transaction* transaction,
     50                         int64 database_id,
     51                         int64 object_store_id,
     52                         int64 index_id,
     53                         const IndexedDBKey& index_key,
     54                         const IndexedDBKey& primary_key,
     55                         bool* allowed) const WARN_UNUSED_RESULT;
     56 
     57   const IndexedDBIndexMetadata index_metadata_;
     58   IndexedDBDatabase::IndexKeys index_keys_;
     59 
     60   DISALLOW_COPY_AND_ASSIGN(IndexWriter);
     61 };
     62 
     63 bool MakeIndexWriters(
     64     IndexedDBTransaction* transaction,
     65     IndexedDBBackingStore* store,
     66     int64 database_id,
     67     const IndexedDBObjectStoreMetadata& metadata,
     68     const IndexedDBKey& primary_key,
     69     bool key_was_generated,
     70     const std::vector<IndexedDBDatabase::IndexKeys>& index_keys,
     71     ScopedVector<IndexWriter>* index_writers,
     72     base::string16* error_message,
     73     bool* completed) WARN_UNUSED_RESULT;
     74 
     75 }  // namespace content
     76 
     77 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_INDEX_WRITER_H_
     78