forked from mirrors/gecko-dev
512 lines
16 KiB
C++
512 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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 mozilla.org code.
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*
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* The Initial Developer of the Original Code is Neil Deakin
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Laurent Jouanneau <laurent.jouanneau@disruptive-innovations.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 of the GNU General Public License Version 2 or later (the "GPL"),
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* or 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 "prprf.h"
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#include "nsIDOMNodeList.h"
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#include "nsUnicharUtils.h"
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#include "nsArrayUtils.h"
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#include "nsIVariant.h"
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#include "nsAppDirectoryServiceDefs.h"
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#include "nsIURI.h"
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#include "nsIIOService.h"
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#include "nsIFileChannel.h"
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#include "nsIFile.h"
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#include "nsGkAtoms.h"
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#include "nsContentUtils.h"
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#include "nsXULTemplateBuilder.h"
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#include "nsXULTemplateResultStorage.h"
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#include "mozIStorageService.h"
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//----------------------------------------------------------------------
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//
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// nsXULTemplateResultSetStorage
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//
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NS_IMPL_ISUPPORTS1(nsXULTemplateResultSetStorage, nsISimpleEnumerator)
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nsXULTemplateResultSetStorage::nsXULTemplateResultSetStorage(mozIStorageStatement* aStatement)
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: mStatement(aStatement)
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{
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PRUint32 count;
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nsresult rv = aStatement->GetColumnCount(&count);
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if (NS_FAILED(rv)) {
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mStatement = nsnull;
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return;
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}
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for (PRUint32 c = 0; c < count; c++) {
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nsCAutoString name;
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rv = aStatement->GetColumnName(c, name);
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if (NS_SUCCEEDED(rv)) {
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nsCOMPtr<nsIAtom> columnName = do_GetAtom(NS_LITERAL_CSTRING("?") + name);
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mColumnNames.AppendObject(columnName);
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}
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}
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}
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NS_IMETHODIMP
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nsXULTemplateResultSetStorage::HasMoreElements(PRBool *aResult)
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{
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if (!mStatement) {
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*aResult = PR_FALSE;
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return NS_OK;
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}
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nsresult rv = mStatement->ExecuteStep(aResult);
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NS_ENSURE_SUCCESS(rv, rv);
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// Because the nsXULTemplateResultSetStorage is owned by many nsXULTemplateResultStorage objects,
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// it could live longer than it needed to get results.
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// So we destroy the statement to free resources when all results are fetched
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if (!*aResult) {
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mStatement = nsnull;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXULTemplateResultSetStorage::GetNext(nsISupports **aResult)
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{
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nsXULTemplateResultStorage* result =
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new nsXULTemplateResultStorage(this);
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if (!result)
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return NS_ERROR_OUT_OF_MEMORY;
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*aResult = result;
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NS_ADDREF(result);
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return NS_OK;
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}
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PRInt32
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nsXULTemplateResultSetStorage::GetColumnIndex(nsIAtom* aColumnName)
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{
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PRInt32 count = mColumnNames.Count();
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for (PRInt32 c = 0; c < count; c++) {
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if (mColumnNames[c] == aColumnName)
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return c;
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}
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return -1;
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}
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void
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nsXULTemplateResultSetStorage::FillColumnValues(nsCOMArray<nsIVariant>& aArray)
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{
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if (!mStatement)
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return;
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PRInt32 count = mColumnNames.Count();
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for (PRInt32 c = 0; c < count; c++) {
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nsCOMPtr<nsIWritableVariant> value = do_CreateInstance("@mozilla.org/variant;1");
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PRInt32 type;
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mStatement->GetTypeOfIndex(c, &type);
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if (type == mStatement->VALUE_TYPE_INTEGER) {
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PRInt64 val = mStatement->AsInt64(c);
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value->SetAsInt64(val);
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}
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else if (type == mStatement->VALUE_TYPE_FLOAT) {
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double val = mStatement->AsDouble(c);
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value->SetAsDouble(val);
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}
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else {
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nsAutoString val;
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nsresult rv = mStatement->GetString(c, val);
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if (NS_FAILED(rv))
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value->SetAsAString(EmptyString());
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else
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value->SetAsAString(val);
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}
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aArray.AppendObject(value);
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}
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}
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//----------------------------------------------------------------------
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//
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// nsXULTemplateQueryProcessorStorage
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//
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NS_IMPL_ISUPPORTS1(nsXULTemplateQueryProcessorStorage,
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nsIXULTemplateQueryProcessor)
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nsXULTemplateQueryProcessorStorage::nsXULTemplateQueryProcessorStorage()
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: mGenerationStarted(PR_FALSE)
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{
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}
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NS_IMETHODIMP
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nsXULTemplateQueryProcessorStorage::GetDatasource(nsIArray* aDataSources,
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nsIDOMNode* aRootNode,
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PRBool aIsTrusted,
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nsIXULTemplateBuilder* aBuilder,
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PRBool* aShouldDelayBuilding,
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nsISupports** aReturn)
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{
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*aReturn = nsnull;
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*aShouldDelayBuilding = PR_FALSE;
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if (!aIsTrusted) {
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return NS_OK;
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}
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PRUint32 length;
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nsresult rv = aDataSources->GetLength(&length);
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NS_ENSURE_SUCCESS(rv, rv);
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if (length == 0) {
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return NS_OK;
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}
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// We get only the first uri. This query processor supports
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// only one database at a time.
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nsCOMPtr<nsIURI> uri;
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uri = do_QueryElementAt(aDataSources, 0);
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if (!uri) {
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// No uri in the list of datasources
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return NS_OK;
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}
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nsCOMPtr<mozIStorageService> storage =
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do_GetService("@mozilla.org/storage/service;1", &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIFile> databaseFile;
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nsCAutoString scheme;
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rv = uri->GetScheme(scheme);
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NS_ENSURE_SUCCESS(rv, rv);
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if (scheme.EqualsLiteral("profile")) {
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nsCAutoString path;
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rv = uri->GetPath(path);
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NS_ENSURE_SUCCESS(rv, rv);
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if (path.IsEmpty()) {
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return NS_ERROR_FAILURE;
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}
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rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR,
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getter_AddRefs(databaseFile));
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NS_ENSURE_SUCCESS(rv, rv);
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rv = databaseFile->AppendNative(path);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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else {
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nsCOMPtr<nsIChannel> channel;
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nsCOMPtr<nsIIOService> ioservice =
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do_GetService("@mozilla.org/network/io-service;1", &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = ioservice->NewChannelFromURI(uri, getter_AddRefs(channel));
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIFileChannel> fileChannel = do_QueryInterface(channel, &rv);
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NS_ENSURE_SUCCESS(rv, rv); // if it fails, not a file url
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nsCOMPtr<nsIFile> file;
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rv = fileChannel->GetFile(getter_AddRefs(databaseFile));
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NS_ENSURE_SUCCESS(rv, rv);
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}
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// ok now we have an URI of a sqlite file
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nsCOMPtr<mozIStorageConnection> connection;
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rv = storage->OpenDatabase(databaseFile, getter_AddRefs(connection));
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NS_ENSURE_SUCCESS(rv, rv);
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NS_ADDREF(*aReturn = connection);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXULTemplateQueryProcessorStorage::InitializeForBuilding(nsISupports* aDatasource,
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nsIXULTemplateBuilder* aBuilder,
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nsIDOMNode* aRootNode)
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{
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NS_ENSURE_STATE(!mGenerationStarted);
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mStorageConnection = do_QueryInterface(aDatasource);
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if (!mStorageConnection)
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return NS_ERROR_INVALID_ARG;
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PRBool ready;
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mStorageConnection->GetConnectionReady(&ready);
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if (!ready)
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return NS_ERROR_UNEXPECTED;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXULTemplateQueryProcessorStorage::Done()
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{
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mGenerationStarted = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXULTemplateQueryProcessorStorage::CompileQuery(nsIXULTemplateBuilder* aBuilder,
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nsIDOMNode* aQueryNode,
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nsIAtom* aRefVariable,
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nsIAtom* aMemberVariable,
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nsISupports** aReturn)
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{
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nsCOMPtr<nsIDOMNodeList> childNodes;
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aQueryNode->GetChildNodes(getter_AddRefs(childNodes));
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PRUint32 length;
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childNodes->GetLength(&length);
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nsCOMPtr<mozIStorageStatement> statement;
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nsCOMPtr<nsIContent> queryContent = do_QueryInterface(aQueryNode);
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nsAutoString sqlQuery;
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// Let's get all text nodes (which should be the query)
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nsContentUtils::GetNodeTextContent(queryContent, PR_FALSE, sqlQuery);
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nsresult rv = mStorageConnection->CreateStatement(NS_ConvertUTF16toUTF8(sqlQuery),
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getter_AddRefs(statement));
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NS_ENSURE_SUCCESS(rv, rv);
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PRUint32 parameterCount = 0;
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PRUint32 count = queryContent->GetChildCount();
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for (PRUint32 i = 0; i < count; ++i) {
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nsIContent *child = queryContent->GetChildAt(i);
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if (child->NodeInfo()->Equals(nsGkAtoms::param, kNameSpaceID_XUL)) {
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nsAutoString value;
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nsContentUtils::GetNodeTextContent(child, PR_FALSE, value);
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PRUint32 index = parameterCount;
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nsAutoString name, indexValue;
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if (child->GetAttr(kNameSpaceID_None, nsGkAtoms::name, name)) {
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rv = statement->GetParameterIndex(NS_ConvertUTF16toUTF8(name),
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&index);
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NS_ENSURE_SUCCESS(rv, rv);
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parameterCount++;
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}
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else if (child->GetAttr(kNameSpaceID_None, nsGkAtoms::index, indexValue)) {
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PR_sscanf(NS_ConvertUTF16toUTF8(indexValue).get(),"%d",&index);
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if (index > 0)
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index--;
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}
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else {
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parameterCount++;
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}
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static nsIContent::AttrValuesArray sTypeValues[] =
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{ &nsGkAtoms::int32, &nsGkAtoms::integer, &nsGkAtoms::int64,
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&nsGkAtoms::null, &nsGkAtoms::double_, &nsGkAtoms::string, nsnull };
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PRInt32 typeError, typeValue = child->FindAttrValueIn(kNameSpaceID_None, nsGkAtoms::type,
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sTypeValues, eCaseMatters);
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rv = NS_ERROR_ILLEGAL_VALUE;
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PRInt32 valInt32 = 0;
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PRInt64 valInt64 = 0;
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PRFloat64 valFloat = 0;
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switch (typeValue) {
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case 0:
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case 1:
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typeError = PR_sscanf(NS_ConvertUTF16toUTF8(value).get(),"%d",&valInt32);
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if (typeError > 0)
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rv = statement->BindInt32Parameter(index, valInt32);
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break;
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case 2:
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typeError = PR_sscanf(NS_ConvertUTF16toUTF8(value).get(),"%lld",&valInt64);
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if (typeError > 0)
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rv = statement->BindInt64Parameter(index, valInt64);
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break;
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case 3:
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rv = statement->BindNullParameter(index);
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break;
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case 4:
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typeError = PR_sscanf(NS_ConvertUTF16toUTF8(value).get(),"%lf",&valFloat);
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if (typeError > 0)
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rv = statement->BindDoubleParameter(index, valFloat);
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break;
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case 5:
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case nsIContent::ATTR_MISSING:
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rv = statement->BindStringParameter(index, value);
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break;
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}
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NS_ENSURE_SUCCESS(rv, rv);
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}
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}
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*aReturn = statement;
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NS_IF_ADDREF(*aReturn);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXULTemplateQueryProcessorStorage::GenerateResults(nsISupports* aDatasource,
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nsIXULTemplateResult* aRef,
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nsISupports* aQuery,
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nsISimpleEnumerator** aResults)
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{
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mGenerationStarted = PR_TRUE;
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nsCOMPtr<mozIStorageStatement> statement = do_QueryInterface(aQuery);
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if (!statement)
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return NS_ERROR_FAILURE;
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nsXULTemplateResultSetStorage* results =
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new nsXULTemplateResultSetStorage(statement);
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if (!results)
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return NS_ERROR_OUT_OF_MEMORY;
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*aResults = results;
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NS_ADDREF(*aResults);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXULTemplateQueryProcessorStorage::AddBinding(nsIDOMNode* aRuleNode,
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nsIAtom* aVar,
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nsIAtom* aRef,
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const nsAString& aExpr)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXULTemplateQueryProcessorStorage::TranslateRef(nsISupports* aDatasource,
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const nsAString& aRefString,
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nsIXULTemplateResult** aRef)
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{
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nsXULTemplateResultStorage* result =
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new nsXULTemplateResultStorage(nsnull);
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if (!result)
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return NS_ERROR_OUT_OF_MEMORY;
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*aRef = result;
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NS_ADDREF(*aRef);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXULTemplateQueryProcessorStorage::CompareResults(nsIXULTemplateResult* aLeft,
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nsIXULTemplateResult* aRight,
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nsIAtom* aVar,
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PRInt32* aResult)
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{
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*aResult = 0;
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if (!aVar)
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return NS_OK;
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// We're going to see if values are integers or float, to perform
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// a suitable comparison
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nsCOMPtr<nsISupports> leftValue, rightValue;
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if (aLeft)
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aLeft->GetBindingObjectFor(aVar, getter_AddRefs(leftValue));
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if (aRight)
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aRight->GetBindingObjectFor(aVar, getter_AddRefs(rightValue));
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if (leftValue && rightValue) {
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nsCOMPtr<nsIVariant> vLeftValue = do_QueryInterface(leftValue);
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nsCOMPtr<nsIVariant> vRightValue = do_QueryInterface(rightValue);
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if (vLeftValue && vRightValue) {
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nsresult rv1, rv2;
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PRUint16 vtypeL, vtypeR;
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vLeftValue->GetDataType(&vtypeL);
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vRightValue->GetDataType(&vtypeR);
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if (vtypeL == vtypeR) {
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if (vtypeL == nsIDataType::VTYPE_INT64) {
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PRInt64 leftValue, rightValue;
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rv1 = vLeftValue->GetAsInt64(&leftValue);
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rv2 = vRightValue->GetAsInt64(&rightValue);
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if (NS_SUCCEEDED(rv1) && NS_SUCCEEDED(rv2)) {
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if (leftValue > rightValue)
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*aResult = 1;
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else if (leftValue < rightValue)
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*aResult = -1;
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return NS_OK;
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}
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}
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else if (vtypeL == nsIDataType::VTYPE_DOUBLE) {
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double leftValue, rightValue;
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rv1 = vLeftValue->GetAsDouble(&leftValue);
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rv2 = vRightValue->GetAsDouble(&rightValue);
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if (NS_SUCCEEDED(rv1) && NS_SUCCEEDED(rv2)) {
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if (leftValue > rightValue)
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*aResult = 1;
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else if (leftValue < rightValue)
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*aResult = -1;
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return NS_OK;
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}
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}
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}
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}
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}
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// Values are not integers or floats, so we just compare them as simple strings
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nsAutoString leftVal;
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if (aLeft)
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aLeft->GetBindingFor(aVar, leftVal);
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nsAutoString rightVal;
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if (aRight)
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aRight->GetBindingFor(aVar, rightVal);
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*aResult = Compare(nsDependentString(leftVal),
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nsDependentString(rightVal),
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nsCaseInsensitiveStringComparator());
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return NS_OK;
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}
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