| /**************************************************************************** |
| ** |
| ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). |
| ** All rights reserved. |
| ** Contact: Nokia Corporation (qt-info@nokia.com) |
| ** |
| ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** GNU Lesser General Public License Usage |
| ** This file may be used under the terms of the GNU Lesser General Public |
| ** License version 2.1 as published by the Free Software Foundation and |
| ** appearing in the file LICENSE.LGPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU Lesser |
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| ** |
| ** In addition, as a special exception, Nokia gives you certain additional |
| ** rights. These rights are described in the Nokia Qt LGPL Exception |
| ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU General |
| ** Public License version 3.0 as published by the Free Software Foundation |
| ** and appearing in the file LICENSE.GPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU General |
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| ** Other Usage |
| ** Alternatively, this file may be used in accordance with the terms and |
| ** conditions contained in a signed written agreement between you and Nokia. |
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| ** $QT_END_LICENSE$ |
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| ****************************************************************************/ |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| |
| #ifndef Patternist_DocumentFN_H |
| #define Patternist_DocumentFN_H |
| |
| #include "qfunctioncall_p.h" |
| |
| QT_BEGIN_HEADER |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace QPatternist |
| { |
| |
| /** |
| * @short Implements XSL-T's function <tt>fn:document()</tt>. |
| * |
| * @c fn:document() has no evaluation functions, because it rewrites |
| * itself to a set of expressions that is the implementation. |
| * |
| * The two-argument version: |
| * |
| * <tt>document($uris as item()*, $baseURINode as node()) as node()*</tt> |
| * |
| * is rewritten into: |
| * |
| * <tt>for $uri in distinct-values($uris) |
| * return doc(resolve-uri($uri, base-uri($baseURINode)))</tt> |
| * |
| * and the single version argument: |
| * |
| * <tt>document($uris as item()*) as node()*</tt> |
| * |
| * is rewritten into: |
| * |
| * <tt>for $uri in distinct-values($uris) |
| * return doc($uri)</tt> |
| * |
| * The distinct-values() call ensures the node deduplication and sorting, |
| * although it fails in the case that URIs resolve/directs in some way to |
| * the same document. Some of those cases can be solved by wrapping the |
| * whole expression with a node deduplication(conceptually the-for-loop/.). |
| * One advantage with distinct-values() over generating traditional node |
| * sorting/deduplication code is that the latter contains node sorting |
| * which is uecessary and can be hard to analyze away. distinct-values() |
| * doesn't have this problem due to its narrower task.. |
| * |
| * This works without problems, assuming XTRE1160 is not raised and that |
| * the recover action instead is ignore. In the case XTRE1160 is raised, |
| * one must cater for this. |
| * |
| * In addition to this, both signatures has its first argument changed to |
| * type <tt>xs:string*</tt>, in order to generate atomization code. |
| * |
| * One notable thing is that the expression for $baseURINode, is moved |
| * inside a loop, and will be evaluated repeatedly, unless moved out as |
| * part of optimization. |
| * |
| * @ingroup Patternist_functions |
| * @author Frans Englich <frans.englich@nokia.com> |
| * @since 4.5 |
| */ |
| class DocumentFN : public FunctionCall |
| { |
| public: |
| virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context, |
| const SequenceType::Ptr &reqType); |
| }; |
| } |
| |
| QT_END_NAMESPACE |
| |
| QT_END_HEADER |
| |
| #endif |