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c9061686f8
Includes baddataDB.sqlite which is a copy of goodDB.sqlite but with what appears to be the row count inflated beyond the end of the file. This causes loading the database to succeed but queries to fail. This increments a scalar for every database open and for every database query where a query is the full execution of a statement from start to completion. If a statement is re-used then the scalar will be incremented once for each use. Differential Revision: https://phabricator.services.mozilla.com/D73938
133 lines
3.9 KiB
C++
133 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozStorageStatement_h
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#define mozStorageStatement_h
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#include "nsString.h"
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#include "nsTArray.h"
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#include "mozStorageBindingParamsArray.h"
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#include "mozStorageStatementData.h"
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#include "mozIStorageStatement.h"
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#include "mozIStorageValueArray.h"
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#include "StorageBaseStatementInternal.h"
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#include "mozilla/Attributes.h"
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struct sqlite3_stmt;
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namespace mozilla {
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namespace storage {
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class StatementJSHelper;
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class Connection;
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class StatementParamsHolder;
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class StatementRowHolder;
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class Statement final : public mozIStorageStatement,
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public mozIStorageValueArray,
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public StorageBaseStatementInternal {
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_MOZISTORAGESTATEMENT
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NS_DECL_MOZISTORAGEBASESTATEMENT
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NS_DECL_MOZISTORAGEBINDINGPARAMS
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// NS_DECL_MOZISTORAGEVALUEARRAY (methods in mozIStorageStatement)
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NS_DECL_STORAGEBASESTATEMENTINTERNAL
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Statement();
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/**
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* Initializes the object on aDBConnection by preparing the SQL statement
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* given by aSQLStatement.
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*
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* @param aDBConnection
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* The Connection object this statement is associated with.
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* @param aNativeConnection
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* The native Sqlite connection this statement is associated with.
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* @param aSQLStatement
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* The SQL statement to prepare that this object will represent.
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*/
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nsresult initialize(Connection* aDBConnection, sqlite3* aNativeConnection,
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const nsACString& aSQLStatement);
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/**
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* Obtains the native statement pointer.
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*/
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inline sqlite3_stmt* nativeStatement() { return mDBStatement; }
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/**
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* Obtains and transfers ownership of the array of parameters that are bound
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* to this statment. This can be null.
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*/
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inline already_AddRefed<BindingParamsArray> bindingParamsArray() {
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return mParamsArray.forget();
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}
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private:
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~Statement();
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sqlite3_stmt* mDBStatement;
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uint32_t mParamCount;
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uint32_t mResultColumnCount;
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nsTArray<nsCString> mColumnNames;
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bool mExecuting;
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// Tracks whether the status for this statement has been recorded since it was
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// last reset or created.
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bool mQueryStatusRecorded;
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// Tracks whether this statement has been executed since it was last reset or
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// created.
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bool mHasExecuted;
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/**
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* @return a pointer to the BindingParams object to use with our Bind*
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* method.
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*/
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mozIStorageBindingParams* getParams();
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/**
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* Records a query status result in telemetry. If a result has already been
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* recorded for this statement then this does nothing. Otherwise the result
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* is recorded if it is an error or if this is the final result.
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*/
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void MaybeRecordQueryStatus(int srv, bool isResetting = false);
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/**
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* Holds the array of parameters to bind to this statement when we execute
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* it asynchronously.
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*/
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RefPtr<BindingParamsArray> mParamsArray;
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/**
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* The following two members are only used with the JS helper. They cache
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* the row and params objects.
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*/
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nsMainThreadPtrHandle<StatementParamsHolder> mStatementParamsHolder;
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nsMainThreadPtrHandle<StatementRowHolder> mStatementRowHolder;
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/**
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* Internal version of finalize that allows us to tell it if it is being
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* called from the destructor so it can know not to dispatch events that
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* require a reference to us.
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*
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* @param aDestructing
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* Is the destructor calling?
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*/
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nsresult internalFinalize(bool aDestructing);
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friend class StatementJSHelper;
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};
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inline nsISupports* ToSupports(Statement* p) {
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return NS_ISUPPORTS_CAST(mozIStorageStatement*, p);
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}
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} // namespace storage
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} // namespace mozilla
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#endif // mozStorageStatement_h
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