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38 lines
1.5 KiB
Plaintext
38 lines
1.5 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=2 sts=2 expandtab
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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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#include "mozIStorageBaseStatement.idl"
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/**
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* An asynchronous SQL statement. This differs from mozIStorageStatement by
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* only being usable for asynchronous execution. (mozIStorageStatement can
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* be used for both synchronous and asynchronous purposes.) This specialization
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* for asynchronous operation allows us to avoid needing to acquire
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* synchronization primitives also used by the asynchronous execution thread.
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* In contrast, mozIStorageStatement may need to acquire the primitives and
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* consequently can cause the main thread to lock for extended intervals while
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* the asynchronous thread performs some long-running operation.
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*/
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[scriptable, uuid(52e49370-3b2e-4a27-a3fc-79e20ad4056b)]
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interface mozIStorageAsyncStatement : mozIStorageBaseStatement {
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/*
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* 'params' provides a magic JS helper that lets you assign parameters by
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* name. Unlike the helper on mozIStorageStatement, you cannot enumerate
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* in order to find out what parameters are legal.
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*
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* This does not work for BLOBs. You must use an explicit binding API for
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* that.
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*
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* example:
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* stmt.params.foo = 1;
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* stmt.params["bar"] = 2;
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* let argName = "baz";
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* stmt.params[argName] = 3;
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*
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* readonly attribute nsIMagic params;
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*/
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};
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