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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozStorageStatement_h
#define mozStorageStatement_h
#include "nsString.h"
#include "nsTArray.h"
#include "mozStorageBindingParamsArray.h"
#include "mozStorageStatementData.h"
#include "mozIStorageStatement.h"
#include "mozIStorageValueArray.h"
#include "StorageBaseStatementInternal.h"
#include "mozilla/Attributes.h"
struct sqlite3_stmt;
namespace mozilla {
namespace storage {
class StatementJSHelper;
class Connection;
class StatementParamsHolder;
class StatementRowHolder;
class Statement final : public mozIStorageStatement,
public mozIStorageValueArray,
public StorageBaseStatementInternal {
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_MOZISTORAGESTATEMENT
NS_DECL_MOZISTORAGEBASESTATEMENT
NS_DECL_MOZISTORAGEBINDINGPARAMS
// NS_DECL_MOZISTORAGEVALUEARRAY (methods in mozIStorageStatement)
NS_DECL_STORAGEBASESTATEMENTINTERNAL
Statement();
/**
* Initializes the object on aDBConnection by preparing the SQL statement
* given by aSQLStatement.
*
* @param aDBConnection
* The Connection object this statement is associated with.
* @param aNativeConnection
* The native Sqlite connection this statement is associated with.
* @param aSQLStatement
* The SQL statement to prepare that this object will represent.
*/
nsresult initialize(Connection* aDBConnection, sqlite3* aNativeConnection,
const nsACString& aSQLStatement);
/**
* Obtains the native statement pointer.
*/
inline sqlite3_stmt* nativeStatement() { return mDBStatement; }
/**
* Obtains and transfers ownership of the array of parameters that are bound
* to this statment. This can be null.
*/
inline already_AddRefed<BindingParamsArray> bindingParamsArray() {
return mParamsArray.forget();
}
private:
~Statement();
sqlite3_stmt* mDBStatement;
uint32_t mParamCount;
uint32_t mResultColumnCount;
nsTArray<nsCString> mColumnNames;
bool mExecuting;
// Tracks whether the status for this statement has been recorded since it was
// last reset or created.
bool mQueryStatusRecorded;
// Tracks whether this statement has been executed since it was last reset or
// created.
bool mHasExecuted;
/**
* @return a pointer to the BindingParams object to use with our Bind*
* method.
*/
mozIStorageBindingParams* getParams();
/**
* Records a query status result in telemetry. If a result has already been
* recorded for this statement then this does nothing. Otherwise the result
* is recorded if it is an error or if this is the final result.
*/
void MaybeRecordQueryStatus(int srv, bool isResetting = false);
/**
* Holds the array of parameters to bind to this statement when we execute
* it asynchronously.
*/
RefPtr<BindingParamsArray> mParamsArray;
/**
* The following two members are only used with the JS helper. They cache
* the row and params objects.
*/
nsMainThreadPtrHandle<StatementParamsHolder> mStatementParamsHolder;
nsMainThreadPtrHandle<StatementRowHolder> mStatementRowHolder;
/**
* Internal version of finalize that allows us to tell it if it is being
* called from the destructor so it can know not to dispatch events that
* require a reference to us.
*
* @param aDestructing
* Is the destructor calling?
*/
nsresult internalFinalize(bool aDestructing);
friend class StatementJSHelper;
};
inline nsISupports* ToSupports(Statement* p) {
return NS_ISUPPORTS_CAST(mozIStorageStatement*, p);
}
} // namespace storage
} // namespace mozilla
#endif // mozStorageStatement_h