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// Copyright (c) 2006-2008 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.
#include <limits>
#include <vector>
#include "chrome/browser/history/download_database.h"
#include "chrome/browser/download/download_manager.h"
#include "chrome/browser/history/download_types.h"
#include "chrome/common/sqlite_utils.h"
#include "chrome/common/sqlite_compiled_statement.h"
using base::Time;
// Download schema:
//
// id SQLite-generated primary key.
// full_path Location of the download on disk.
// url URL of the downloaded file.
// start_time When the download was started.
// received_bytes Total size downloaded.
// total_bytes Total size of the download.
// state Identifies if this download is completed or not. Not used
// directly by the history system. See DownloadItem's
// DownloadState for where this is used.
namespace history {
DownloadDatabase::DownloadDatabase() {
}
DownloadDatabase::~DownloadDatabase() {
}
bool DownloadDatabase::InitDownloadTable() {
if (!DoesSqliteTableExist(GetDB(), "downloads")) {
if (sqlite3_exec(GetDB(),
"CREATE TABLE downloads ("
"id INTEGER PRIMARY KEY,"
"full_path LONGVARCHAR NOT NULL,"
"url LONGVARCHAR NOT NULL,"
"start_time INTEGER NOT NULL,"
"received_bytes INTEGER NOT NULL,"
"total_bytes INTEGER NOT NULL,"
"state INTEGER NOT NULL)", NULL, NULL, NULL) != SQLITE_OK)
return false;
}
return true;
}
bool DownloadDatabase::DropDownloadTable() {
return sqlite3_exec(GetDB(), "DROP TABLE downloads", NULL, NULL, NULL) ==
SQLITE_OK;
}
void DownloadDatabase::QueryDownloads(std::vector<DownloadCreateInfo>* results) {
results->clear();
SQLITE_UNIQUE_STATEMENT(statement, GetStatementCache(),
"SELECT id, full_path, url, start_time, received_bytes, "
"total_bytes, state "
"FROM downloads "
"ORDER BY start_time");
if (!statement.is_valid())
return;
while (statement->step() == SQLITE_ROW) {
DownloadCreateInfo info;
info.db_handle = statement->column_int64(0);
statement->column_string16(1, &info.path);
statement->column_string16(2, &info.url);
info.start_time = Time::FromTimeT(statement->column_int64(3));
info.received_bytes = statement->column_int64(4);
info.total_bytes = statement->column_int64(5);
info.state = statement->column_int(6);
results->push_back(info);
}
}
bool DownloadDatabase::UpdateDownload(int64 received_bytes,
int32 state,
DownloadID db_handle) {
DCHECK(db_handle > 0);
SQLITE_UNIQUE_STATEMENT(statement, GetStatementCache(),
"UPDATE downloads "
"SET received_bytes=?, state=? WHERE id=?");
if (!statement.is_valid())
return false;
statement->bind_int64(0, received_bytes);
statement->bind_int(1, state);
statement->bind_int64(2, db_handle);
return statement->step() == SQLITE_DONE;
}
bool DownloadDatabase::UpdateDownloadPath(const std::wstring& path,
DownloadID db_handle) {
DCHECK(db_handle > 0);
SQLITE_UNIQUE_STATEMENT(statement, GetStatementCache(),
"UPDATE downloads "
"SET full_path=? WHERE id=?");
if (!statement.is_valid())
return false;
statement->bind_wstring(0, path);
statement->bind_int64(1, db_handle);
return statement->step() == SQLITE_DONE;
}
int64 DownloadDatabase::CreateDownload(const DownloadCreateInfo& info) {
SQLITE_UNIQUE_STATEMENT(statement, GetStatementCache(),
"INSERT INTO downloads "
"(full_path, url, start_time, received_bytes, total_bytes, state) "
"VALUES (?, ?, ?, ?, ?, ?)");
if (!statement.is_valid())
return 0;
statement->bind_wstring(0, info.path);
statement->bind_wstring(1, info.url);
statement->bind_int64(2, info.start_time.ToTimeT());
statement->bind_int64(3, info.received_bytes);
statement->bind_int64(4, info.total_bytes);
statement->bind_int(5, info.state);
if (statement->step() == SQLITE_DONE)
return sqlite3_last_insert_rowid(GetDB());
return 0;
}
void DownloadDatabase::RemoveDownload(DownloadID db_handle) {
SQLITE_UNIQUE_STATEMENT(statement, GetStatementCache(),
"DELETE FROM downloads WHERE id=?");
if (!statement.is_valid())
return;
statement->bind_int64(0, db_handle);
statement->step();
}
void DownloadDatabase::RemoveDownloadsBetween(Time delete_begin,
Time delete_end) {
// This does not use an index. We currently aren't likely to have enough
// downloads where an index by time will give us a lot of benefit.
SQLITE_UNIQUE_STATEMENT(statement, GetStatementCache(),
"DELETE FROM downloads WHERE start_time >= ? AND start_time < ? "
"AND (State = ? OR State = ?)");
if (!statement.is_valid())
return;
time_t start_time = delete_begin.ToTimeT();
time_t end_time = delete_end.ToTimeT();
statement->bind_int64(0, start_time);
statement->bind_int64(1, end_time ? end_time : std::numeric_limits<int64>::max());
statement->bind_int(2, DownloadItem::COMPLETE);
statement->bind_int(3, DownloadItem::CANCELLED);
statement->step();
}
void DownloadDatabase::SearchDownloads(std::vector<int64>* results,
const std::wstring& search_text) {
SQLITE_UNIQUE_STATEMENT(statement, GetStatementCache(),
"SELECT id FROM downloads WHERE url LIKE ? "
"OR full_path LIKE ? ORDER BY id");
if (!statement.is_valid())
return;
std::wstring text(L"%");
text.append(search_text);
text.append(L"%");
statement->bind_wstring(0, text);
statement->bind_wstring(1, text);
while (statement->step() == SQLITE_ROW)
results->push_back(statement->column_int64(0));
}
} // namespace history
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