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6cbf5ad014
Improves the asynchronous API by allowing multiple parameters to be bound before executing it. The statement is then executed with each set of parameters asynchronously. r=asuth sr=vlad
236 lines
8.2 KiB
Plaintext
236 lines
8.2 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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* ***** 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 Oracle Corporation code.
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*
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* The Initial Developer of the Original Code is
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* Oracle Corporation
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* Portions created by the Initial Developer are Copyright (C) 2004
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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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*
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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 "mozIStorageValueArray.idl"
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interface mozIStorageConnection;
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interface mozIStorageStatementCallback;
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interface mozIStoragePendingStatement;
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interface mozIStorageBindingParamsArray;
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[scriptable, uuid(20c45bdd-51d4-4f07-b70e-5feaa6302197)]
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interface mozIStorageStatement : mozIStorageValueArray {
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/**
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* Finalizes a statement so you can successfully close a database connection.
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* This method does not need to be used from native callers since you can just
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* set the statement to null, but is extremely useful to JS callers.
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*/
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void finalize();
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/**
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* Create a clone of this statement, by initializing a new statement
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* with the same connection and same SQL statement as this one. It
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* does not preserve statement state; that is, if a statement is
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* being executed when it is cloned, the new statement will not be
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* executing.
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*/
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mozIStorageStatement clone();
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/*
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* Number of parameters
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*/
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readonly attribute unsigned long parameterCount;
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/**
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* Name of nth parameter, if given
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*/
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AUTF8String getParameterName(in unsigned long aParamIndex);
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/**
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* Returns the index of the named parameter.
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*
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* @param aName
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* The name of the parameter you want the index for. This does not
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* include the leading ':'.
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* @returns the index of the named parameter.
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*/
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unsigned long getParameterIndex(in AUTF8String aName);
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/**
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* Number of columns returned
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*/
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readonly attribute unsigned long columnCount;
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/**
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* Name of nth column
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*/
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AUTF8String getColumnName(in unsigned long aColumnIndex);
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/**
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* Obtains the index of the column with the specified name.
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*
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* @param aName The name of the column.
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* @return The index of the column with the specified name.
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*/
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unsigned long getColumnIndex(in AUTF8String aName);
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/**
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* Obtains the declared column type of a prepared statement.
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*
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* @param aParamIndex The zero-based index of the column who's declared type
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* we are interested in.
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* @returns the declared index type.
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*/
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AUTF8String getColumnDecltype(in unsigned long aParamIndex);
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/**
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* Reset parameters/statement execution
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*/
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void reset();
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/**
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* Bind the given value to the parameter at aParamIndex. Index 0
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* denotes the first numbered argument or ?1.
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*/
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void bindUTF8StringParameter(in unsigned long aParamIndex,
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in AUTF8String aValue);
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void bindStringParameter(in unsigned long aParamIndex, in AString aValue);
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void bindDoubleParameter(in unsigned long aParamIndex, in double aValue);
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void bindInt32Parameter(in unsigned long aParamIndex, in long aValue);
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void bindInt64Parameter(in unsigned long aParamIndex, in long long aValue);
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void bindNullParameter(in unsigned long aParamIndex);
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void bindBlobParameter(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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* 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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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.
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*
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* @returns a mozIStorageBindingParamsArray that multiple sets of parameters
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* can be bound to.
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*/
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mozIStorageBindingParamsArray newBindingParamsArray();
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/**
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* Execute the query, ignoring any results. This is accomplished by
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* calling step() once, and then calling reset().
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*
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* Error and last insert info, etc. are available from
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* the mozStorageConnection.
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*/
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void execute();
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/**
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* Execute a query, using any currently-bound parameters. Reset
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* must be called on the statement after the last call of
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* executeStep.
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*
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* @returns a boolean indicating whether there are more rows or not;
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* row data may be accessed using mozIStorageValueArray methods on
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* the statement.
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*
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*/
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boolean executeStep();
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/**
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* Execute a query, using any currently-bound parameters. Reset is called
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* when no more data is returned. This method is only available to JavaScript
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* consumers.
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*
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* @returns a boolean indicating whether there are more rows or not.
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*
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* boolean step();
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*/
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/**
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* Obtains the current list of named parameters, which are settable. This
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* property is only available to JavaScript consumers.
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*
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* readonly attribute mozIStorageStatementParams params;
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*/
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/**
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* Obtains the current row, with access to all the data members by name. This
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* property is only available to JavaScript consumers.
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*
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* readonly attribute mozIStorageStatementRow row;
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*/
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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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* @returns 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 current state. Row getters are only valid while
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* the statement is in the "executing" state.
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*/
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const long MOZ_STORAGE_STATEMENT_INVALID = 0;
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const long MOZ_STORAGE_STATEMENT_READY = 1;
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const long MOZ_STORAGE_STATEMENT_EXECUTING = 2;
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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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* @param aValue the string to escape for SQL LIKE
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* @param aEscapeChar the escape character
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* @returns 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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* @note consumers will have to use same escape char
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* when doing statements such as: ...LIKE '?1' ESCAPE '/'...
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*/
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AString escapeStringForLIKE(in AString aValue, in wchar aEscapeChar);
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};
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