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Diffstat (limited to 'storage/mozStorageStatement.h')
-rw-r--r-- | storage/mozStorageStatement.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/storage/mozStorageStatement.h b/storage/mozStorageStatement.h new file mode 100644 index 0000000000..69b69c58de --- /dev/null +++ b/storage/mozStorageStatement.h @@ -0,0 +1,118 @@ +/* -*- 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 "nsAutoPtr.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" + +class nsIXPConnectJSObjectHolder; +struct sqlite3_stmt; + +namespace mozilla { +namespace storage { +class StatementJSHelper; +class Connection; + +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; + + /** + * @return a pointer to the BindingParams object to use with our Bind* + * method. + */ + mozIStorageBindingParams *getParams(); + + /** + * 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<nsIXPConnectJSObjectHolder> mStatementParamsHolder; + nsMainThreadPtrHandle<nsIXPConnectJSObjectHolder> 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; +}; + +} // namespace storage +} // namespace mozilla + +#endif // mozStorageStatement_h |