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183 строки
7.3 KiB
Plaintext
183 строки
7.3 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 et
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozStorage.
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*
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* The Initial Developer of the Original Code is the Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Vladimir Vukicevic <vladimir.vukicevic@oracle.com>
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* Shawn Wilsher <me@shawnwilsher.com>
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* Andrew Sutherland <asutherland@asutherland.org>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsISupports.idl"
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#include "mozIStorageBindingParams.idl"
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interface mozIStorageConnection;
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interface mozIStorageStatementCallback;
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interface mozIStoragePendingStatement;
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interface mozIStorageBindingParams;
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interface mozIStorageBindingParamsArray;
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/**
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* The base interface for both pure asynchronous storage statements
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* (mozIStorageAsyncStatement) and 'classic' storage statements
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* (mozIStorageStatement) that can be used for both synchronous and asynchronous
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* purposes.
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*/
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[scriptable, uuid(da2ec336-fbbb-4ba1-9778-8c9825980d01)]
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interface mozIStorageBaseStatement : mozIStorageBindingParams {
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/**
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* Finalizes a statement so you can successfully close a database connection.
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* Once a statement has been finalized it can no longer be used for any
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* purpose.
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*
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* Statements are implicitly finalized when their reference counts hits zero.
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* If you are a native (C++) caller this is accomplished by setting all of
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* your nsCOMPtr instances to be NULL. If you are operating from JavaScript
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* code then you cannot rely on this behavior because of the involvement of
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* garbage collection.
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*
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* When finalizing an asynchronous statement you do not need to worry about
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* whether the statement has actually been executed by the asynchronous
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* thread; you just need to call finalize after your last call to executeAsync
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* involving the statement. However, you do need to use asyncClose instead of
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* close on the connection if any statements have been used asynchronously.
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*/
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void finalize();
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/**
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* Bind the given value at the given numeric index.
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*
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* @param aParamIndex
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* 0-based index, 0 corresponding to the first numbered argument or
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* "?1".
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* @param aValue
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* Argument value.
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* @param aValueSize
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* Length of aValue in bytes.
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* @{
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*/
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[deprecated] void bindUTF8StringParameter(in unsigned long aParamIndex,
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in AUTF8String aValue);
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[deprecated] void bindStringParameter(in unsigned long aParamIndex,
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in AString aValue);
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[deprecated] void bindDoubleParameter(in unsigned long aParamIndex,
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in double aValue);
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[deprecated] void bindInt32Parameter(in unsigned long aParamIndex,
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in long aValue);
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[deprecated] void bindInt64Parameter(in unsigned long aParamIndex,
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in long long aValue);
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[deprecated] void bindNullParameter(in unsigned long aParamIndex);
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[deprecated] void bindBlobParameter(
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in unsigned long aParamIndex,
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[array,const,size_is(aValueSize)] in octet aValue,
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in unsigned long aValueSize);
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/**@}*/
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/**
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* Binds the array of parameters to the statement. When executeAsync is
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* called, all the parameters in aParameters are bound and then executed.
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*
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* @param aParameters
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* The array of parameters to bind to the statement upon execution.
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*
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* @note This is only works on statements being used asynchronously.
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*/
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void bindParameters(in mozIStorageBindingParamsArray aParameters);
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/**
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* Creates a new mozIStorageBindingParamsArray that can be used to bind
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* multiple sets of data to a statement with bindParameters.
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*
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* @return a mozIStorageBindingParamsArray that multiple sets of parameters
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* can be bound to.
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*
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* @note This is only useful for statements being used asynchronously.
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*/
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mozIStorageBindingParamsArray newBindingParamsArray();
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/**
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* Execute a query asynchronously using any currently bound parameters. This
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* statement can be reused immediately, and reset does not need to be called.
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*
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* @note If you have any custom defined functions, they must be re-entrant
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* since they can be called on multiple threads.
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*
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* @param aCallback [optional]
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* The callback object that will be notified of progress, errors, and
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* completion.
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* @return an object that can be used to cancel the statements execution.
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*/
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mozIStoragePendingStatement executeAsync(
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[optional] in mozIStorageStatementCallback aCallback
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);
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/**
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* The statement is not usable, either because it failed to initialize or
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* was explicitly finalized.
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*/
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const long MOZ_STORAGE_STATEMENT_INVALID = 0;
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/**
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* The statement is usable.
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*/
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const long MOZ_STORAGE_STATEMENT_READY = 1;
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/**
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* Indicates that the statement is executing and the row getters may be used.
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*
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* @note This is only relevant for mozIStorageStatement instances being used
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* in a synchronous fashion.
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*/
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const long MOZ_STORAGE_STATEMENT_EXECUTING = 2;
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/**
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* Find out whether the statement is usable (has not been finalized).
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*/
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readonly attribute long state;
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/**
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* Escape a string for SQL LIKE search.
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*
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* @note Consumers will have to use same escape char when doing statements
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* such as: ...LIKE '?1' ESCAPE '/'...
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*
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* @param aValue
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* The string to escape for SQL LIKE.
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* @param aEscapeChar
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* The escape character.
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* @return an AString of an escaped version of aValue
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* (%, _ and the escape char are escaped with the escape char)
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* For example, we will convert "foo/bar_baz%20cheese"
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* into "foo//bar/_baz/%20cheese" (if the escape char is '/').
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*/
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AString escapeStringForLIKE(in AString aValue, in wchar aEscapeChar);
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};
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