storage/src/mozStorageAsyncStatementParams.cpp

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   3  * ***** BEGIN LICENSE BLOCK *****
   4  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   5  *
   6  * The contents of this file are subject to the Mozilla Public License Version
   7  * 1.1 (the "License"); you may not use this file except in compliance with
   8  * the License. You may obtain a copy of the License at
   9  * http://www.mozilla.org/MPL/
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  11  * Software distributed under the License is distributed on an "AS IS" basis,
  12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  13  * for the specific language governing rights and limitations under the
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  15  *
  16  * The Original Code is Oracle Corporation code.
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  18  * The Initial Developer of the Original Code is
  19  *  Oracle Corporation
  20  * Portions created by the Initial Developer are Copyright (C) 2004
  21  * the Initial Developer. All Rights Reserved.
  22  *
  23  * Contributor(s):
  24  *   Vladimir Vukicevic <vladimir.vukicevic@oracle.com>
  25  *   Shawn Wilsher <me@shawnwilsher.com>
  26  *
  27  * Alternatively, the contents of this file may be used under the terms of
  28  * either the GNU General Public License Version 2 or later (the "GPL"), or
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  39  * ***** END LICENSE BLOCK ***** */
  40
  41 #include "nsMemory.h"
  42 #include "nsString.h"
  43 #include "nsCOMPtr.h"
  44
  45 #include "mozStoragePrivateHelpers.h"
  46 #include "mozStorageAsyncStatement.h"
  47 #include "mozStorageAsyncStatementParams.h"
  48 #include "mozIStorageStatement.h"
  49
  50 namespace mozilla {
  51 namespace storage {
  52
  53 ////////////////////////////////////////////////////////////////////////////////
  54 //// AsyncStatementParams
  55
  56 AsyncStatementParams::AsyncStatementParams(AsyncStatement *aStatement)
  57 : mStatement(aStatement)
  58 {
  59   NS_ASSERTION(mStatement != nsnull, "mStatement is null");
  60 }
  61
  62 NS_IMPL_ISUPPORTS2(
  63   AsyncStatementParams
  64 , mozIStorageStatementParams
  65 , nsIXPCScriptable
  66 )
  67
  68 ////////////////////////////////////////////////////////////////////////////////
  69 //// nsIXPCScriptable
  70
  71 #define XPC_MAP_CLASSNAME AsyncStatementParams
  72 #define XPC_MAP_QUOTED_CLASSNAME "AsyncStatementParams"
  73 #define XPC_MAP_WANT_SETPROPERTY
  74 #define XPC_MAP_WANT_NEWRESOLVE
  75 #define XPC_MAP_FLAGS nsIXPCScriptable::ALLOW_PROP_MODS_DURING_RESOLVE
  76 #include "xpc_map_end.h"
  77
  78 NS_IMETHODIMP
  79 AsyncStatementParams::SetProperty(
  80   nsIXPConnectWrappedNative *aWrapper,
  81   JSContext *aCtx,
  82   JSObject *aScopeObj,
  83   jsid aId,
  84   jsval *_vp,
  85   PRBool *_retval
  86 )
  87 {
  88   NS_ENSURE_TRUE(mStatement, NS_ERROR_NOT_INITIALIZED);
  89
  90   if (JSID_IS_INT(aId)) {
  91     int idx = JSID_TO_INT(aId);
  92
  93     nsCOMPtr<nsIVariant> variant(convertJSValToVariant(aCtx, *_vp));
  94     NS_ENSURE_TRUE(variant, NS_ERROR_UNEXPECTED);
  95     nsresult rv = mStatement->BindByIndex(idx, variant);
  96     NS_ENSURE_SUCCESS(rv, rv);
  97   }
  98   else if (JSID_IS_STRING(aId)) {
  99     JSString *str = JSID_TO_STRING(aId);
 100     size_t length;
 101     const jschar *chars = JS_GetInternedStringCharsAndLength(str, &length);
 102     NS_ConvertUTF16toUTF8 name(chars, length);
 103
 104     nsCOMPtr<nsIVariant> variant(convertJSValToVariant(aCtx, *_vp));
 105     NS_ENSURE_TRUE(variant, NS_ERROR_UNEXPECTED);
 106     nsresult rv = mStatement->BindByName(name, variant);
 107     NS_ENSURE_SUCCESS(rv, rv);
 108   }
 109   else {
 110     return NS_ERROR_INVALID_ARG;
 111   }
 112
 113   *_retval = PR_TRUE;
 114   return NS_OK;
 115 }
 116
 117 NS_IMETHODIMP
 118 AsyncStatementParams::NewResolve(
 119   nsIXPConnectWrappedNative *aWrapper,
 120   JSContext *aCtx,
 121   JSObject *aScopeObj,
 122   jsid aId,
 123   PRUint32 aFlags,
 124   JSObject **_objp,
 125   PRBool *_retval
 126 )
 127 {
 128   NS_ENSURE_TRUE(mStatement, NS_ERROR_NOT_INITIALIZED);
 129   // We do not throw at any point after this because we want to allow the
 130   // prototype chain to be checked for the property.
 131
 132   bool resolved = false;
 133   PRBool ok = PR_TRUE;
 134   if (JSID_IS_INT(aId)) {
 135     PRUint32 idx = JSID_TO_INT(aId);
 136     // All indexes are good because we don't know how many parameters there
 137     // really are.
 138     ok = ::JS_DefineElement(aCtx, aScopeObj, idx, JSVAL_VOID, nsnull,
 139                             nsnull, 0);
 140     resolved = true;
 141   }
 142   else if (JSID_IS_STRING(aId)) {
 143     JSString *str = JSID_TO_STRING(aId);
 144     size_t nameLength;
 145     const jschar *nameChars = ::JS_GetInternedStringCharsAndLength(str, &nameLength);
 146
 147     // We are unable to tell if there's a parameter with this name and so
 148     // we must assume that there is.  This screws the rest of the prototype
 149     // chain, but people really shouldn't be depending on this anyways.
 150     ok = ::JS_DefineUCProperty(aCtx, aScopeObj, nameChars, nameLength,
 151                                JSVAL_VOID, nsnull, nsnull, 0);
 152     resolved = true;
 153   }
 154
 155   *_retval = ok;
 156   *_objp = resolved && ok ? aScopeObj : nsnull;
 157   return NS_OK;
 158 }
 159
 160 } // namespace storage
 161 } // namespace mozilla