зеркало из https://github.com/mozilla/pjs.git
190 строки
5.1 KiB
C++
190 строки
5.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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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 Indexed Database.
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*
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* The Initial Developer of the Original Code is
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* 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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* Ben Turner <bent.mozilla@gmail.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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#ifndef mozilla_dom_indexeddb_idbkeyrange_h__
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#define mozilla_dom_indexeddb_idbkeyrange_h__
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#include "mozilla/dom/indexedDB/IndexedDatabase.h"
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#include "mozilla/dom/indexedDB/Key.h"
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#include "nsIIDBKeyRange.h"
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#include "nsCycleCollectionParticipant.h"
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class mozIStorageStatement;
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BEGIN_INDEXEDDB_NAMESPACE
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class IDBKeyRange : public nsIIDBKeyRange
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{
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public:
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_NSIIDBKEYRANGE
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(IDBKeyRange)
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static JSBool DefineConstructors(JSContext* aCx,
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JSObject* aObject);
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static
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nsresult FromJSVal(JSContext* aCx,
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const jsval& aVal,
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IDBKeyRange** aKeyRange);
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IDBKeyRange(bool aLowerOpen, bool aUpperOpen, bool aIsOnly)
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: mCachedLowerVal(JSVAL_VOID), mCachedUpperVal(JSVAL_VOID),
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mLowerOpen(aLowerOpen), mUpperOpen(aUpperOpen), mIsOnly(aIsOnly),
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mHaveCachedLowerVal(false), mHaveCachedUpperVal(false), mRooted(false)
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{ }
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const Key& Lower() const
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{
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return mLower;
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}
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Key& Lower()
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{
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return mLower;
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}
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const Key& Upper() const
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{
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return mIsOnly ? mLower : mUpper;
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}
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Key& Upper()
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{
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return mIsOnly ? mLower : mUpper;
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}
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bool IsLowerOpen() const
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{
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return mLowerOpen;
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}
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bool IsUpperOpen() const
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{
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return mUpperOpen;
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}
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bool IsOnly() const
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{
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return mIsOnly;
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}
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void GetBindingClause(const nsACString& aKeyColumnName,
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nsACString& _retval) const
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{
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NS_NAMED_LITERAL_CSTRING(andStr, " AND ");
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NS_NAMED_LITERAL_CSTRING(spacecolon, " :");
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NS_NAMED_LITERAL_CSTRING(lowerKey, "lower_key");
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if (IsOnly()) {
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// Both keys are set and they're equal.
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_retval = andStr + aKeyColumnName + NS_LITERAL_CSTRING(" =") + spacecolon +
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lowerKey;
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}
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else {
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nsCAutoString clause;
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if (!Lower().IsUnset()) {
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// Lower key is set.
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clause.Append(andStr + aKeyColumnName);
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clause.AppendLiteral(" >");
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if (!IsLowerOpen()) {
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clause.AppendLiteral("=");
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}
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clause.Append(spacecolon + lowerKey);
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}
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if (!Upper().IsUnset()) {
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// Upper key is set.
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clause.Append(andStr + aKeyColumnName);
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clause.AppendLiteral(" <");
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if (!IsUpperOpen()) {
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clause.AppendLiteral("=");
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}
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clause.Append(spacecolon + NS_LITERAL_CSTRING("upper_key"));
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}
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_retval = clause;
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}
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}
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nsresult BindToStatement(mozIStorageStatement* aStatement) const
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{
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NS_NAMED_LITERAL_CSTRING(lowerKey, "lower_key");
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if (IsOnly()) {
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return Lower().BindToStatement(aStatement, lowerKey);
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}
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nsresult rv;
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if (!Lower().IsUnset()) {
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rv = Lower().BindToStatement(aStatement, lowerKey);
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NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
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}
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if (!Upper().IsUnset()) {
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rv = Upper().BindToStatement(aStatement, NS_LITERAL_CSTRING("upper_key"));
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NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
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}
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return NS_OK;
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}
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protected:
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~IDBKeyRange();
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Key mLower;
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Key mUpper;
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jsval mCachedLowerVal;
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jsval mCachedUpperVal;
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bool mLowerOpen;
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bool mUpperOpen;
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bool mIsOnly;
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bool mHaveCachedLowerVal;
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bool mHaveCachedUpperVal;
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bool mRooted;
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};
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END_INDEXEDDB_NAMESPACE
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#endif // mozilla_dom_indexeddb_idbkeyrange_h__
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