| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #include "ElemForEach.hpp" |
| |
| |
| |
| #include <algorithm> |
| #include <cassert> |
| |
| |
| |
| #include <xercesc/sax/AttributeList.hpp> |
| |
| |
| |
| #include <xalanc/Include/STLHelper.hpp> |
| |
| |
| |
| #include <xalanc/PlatformSupport/DOMStringHelper.hpp> |
| #include <xalanc/PlatformSupport/XalanMessageLoader.hpp> |
| |
| |
| |
| #include <xalanc/XPath/XPath.hpp> |
| |
| |
| |
| #include "ElemSort.hpp" |
| #include "NodeSorter.hpp" |
| #include "SelectionEvent.hpp" |
| #include "StylesheetConstructionContext.hpp" |
| #include "StylesheetExecutionContext.hpp" |
| |
| |
| |
| namespace XALAN_CPP_NAMESPACE { |
| |
| |
| |
| ElemForEach::ElemForEach( |
| StylesheetConstructionContext& constructionContext, |
| Stylesheet& stylesheetTree, |
| const AttributeListType& atts, |
| XalanFileLoc lineNumber, |
| XalanFileLoc columnNumber) : |
| ElemTemplateElement(constructionContext, |
| stylesheetTree, |
| lineNumber, |
| columnNumber, |
| StylesheetConstructionContext::ELEMNAME_FOR_EACH), |
| m_selectPattern(0), |
| m_sortElems(constructionContext.getMemoryManager()), |
| m_sortElemsCount(0) |
| { |
| const XalanSize_t nAttrs = atts.getLength(); |
| |
| for (XalanSize_t i = 0; i < nAttrs; i++) |
| { |
| const XalanDOMChar* const aname = atts.getName(i); |
| |
| if (equals(aname, Constants::ATTRNAME_SELECT)) |
| { |
| m_selectPattern = constructionContext.createXPath(getLocator(), atts.getValue(i), *this); |
| } |
| else if (isAttrOK( |
| aname, |
| atts, |
| i, |
| constructionContext) == false && |
| processSpaceAttr( |
| Constants::ELEMNAME_FOREACH_WITH_PREFIX_STRING.c_str(), |
| aname, |
| atts, |
| i, |
| constructionContext) == false) |
| { |
| error( |
| constructionContext, |
| XalanMessages::ElementHasIllegalAttribute_2Param, |
| Constants::ELEMNAME_FOREACH_WITH_PREFIX_STRING.c_str(), |
| aname); |
| } |
| } |
| |
| if (0 == m_selectPattern) |
| { |
| error( |
| constructionContext, |
| XalanMessages::ElementMustHaveAttribute_2Param, |
| Constants::ELEMNAME_FOREACH_WITH_PREFIX_STRING, |
| Constants::ATTRNAME_SELECT); |
| } |
| } |
| |
| |
| |
| ElemForEach::ElemForEach( |
| StylesheetConstructionContext& constructionContext, |
| Stylesheet& stylesheetTree, |
| XalanFileLoc lineNumber, |
| XalanFileLoc columnNumber, |
| int xslToken) : |
| ElemTemplateElement(constructionContext, |
| stylesheetTree, |
| lineNumber, |
| columnNumber, |
| xslToken), |
| m_selectPattern(0), |
| m_sortElems(constructionContext.getMemoryManager()), |
| m_sortElemsCount(0) |
| { |
| } |
| |
| |
| |
| ElemForEach::~ElemForEach() |
| { |
| using std::for_each; |
| |
| MemoryManager& theManager = m_sortElems.getMemoryManager(); |
| |
| for_each(m_sortElems.begin(), |
| m_sortElems.end(), |
| DeleteFunctor<ElemSort>(theManager)); |
| } |
| |
| |
| |
| void |
| ElemForEach::processSortElement( |
| StylesheetConstructionContext& constructionContext, |
| Stylesheet& theStylesheet, |
| const AttributeListType& atts, |
| const Locator* locator) |
| { |
| const XalanFileLoc lineNumber = XalanLocator::getLineNumber(locator); |
| const XalanFileLoc columnNumber = XalanLocator::getColumnNumber(locator); |
| |
| m_sortElems.reserve(m_sortElems.size() + 1); |
| |
| ElemSort* sortElem = ElemSort::create( |
| constructionContext.getMemoryManager(), |
| constructionContext, |
| theStylesheet, |
| atts, |
| lineNumber, |
| columnNumber); |
| |
| m_sortElems.push_back(sortElem); |
| } |
| |
| |
| |
| const XalanDOMString& |
| ElemForEach::getElementName() const |
| { |
| return Constants::ELEMNAME_FOREACH_WITH_PREFIX_STRING; |
| } |
| |
| |
| |
| void |
| ElemForEach::postConstruction( |
| StylesheetConstructionContext& constructionContext, |
| const NamespacesHandler& theParentHandler) |
| { |
| ElemTemplateElement::postConstruction(constructionContext, theParentHandler); |
| |
| m_sortElemsCount = m_sortElems.size(); |
| } |
| |
| |
| |
| #if !defined(XALAN_RECURSIVE_STYLESHEET_EXECUTION) |
| const ElemTemplateElement* |
| ElemForEach::startElement(StylesheetExecutionContext& executionContext) const |
| { |
| assert(executionContext.getCurrentNode() != 0); |
| |
| if (hasChildren() == true) |
| { |
| executionContext.pushCurrentTemplate(0); |
| const NodeRefListBase * nodeList = createSelectedAndSortedNodeList( |
| executionContext); |
| executionContext.createAndPushNodesToTransformList(nodeList); |
| executionContext.pushContextNodeList(*nodeList); |
| |
| XalanNode* currentNode = executionContext.getNextNodeToTransform(); |
| if (currentNode == 0) |
| { |
| return 0; |
| } |
| executionContext.pushCurrentNode(currentNode); |
| |
| return beginExecuteChildren(executionContext); |
| } |
| |
| return 0; |
| } |
| |
| |
| |
| const ElemTemplateElement* |
| ElemForEach::getNextChildElemToExecute( |
| StylesheetExecutionContext& executionContext, |
| const ElemTemplateElement* currentElem) const |
| { |
| if (hasDirectTemplate() != true) |
| { |
| ElemTemplateElement* nextElement = currentElem->getNextSiblingElem(); |
| |
| if (nextElement != 0) |
| { |
| return nextElement; |
| } |
| } |
| |
| executionContext.popCurrentNode(); |
| |
| |
| XalanNode * nextNode = executionContext.getNextNodeToTransform(); |
| |
| if (nextNode == 0) |
| { |
| return 0; |
| } |
| |
| executionContext.pushCurrentNode(nextNode); |
| endExecuteChildren(executionContext); |
| return beginExecuteChildren(executionContext); |
| } |
| |
| |
| |
| void |
| ElemForEach::endElement(StylesheetExecutionContext& executionContext) const |
| { |
| if (hasChildren() == true) |
| { |
| // Children only executed if there were selected nodes |
| if(executionContext.getContextNodeList().getLength() > 0) |
| { |
| endExecuteChildren(executionContext); |
| } |
| |
| executionContext.popNodesToTransformList(); |
| executionContext.popContextNodeList(); |
| releaseSelectedAndSortedNodeList(executionContext); |
| executionContext.popCurrentTemplate(); |
| } |
| } |
| |
| |
| |
| const NodeRefListBase* |
| ElemForEach::createSelectedAndSortedNodeList( |
| StylesheetExecutionContext& executionContext) const |
| { |
| assert(m_selectPattern != 0); |
| |
| typedef StylesheetExecutionContext::SetAndRestoreCurrentStackFrameIndex SetAndRestoreCurrentStackFrameIndex; |
| |
| MutableNodeRefList& selectedNodeList = executionContext.createAndPushMutableNodeRefList(); |
| |
| XObjectPtr xobjectResult; |
| |
| const NodeRefListBase* nodesToTransform = 0; |
| |
| { |
| xobjectResult = m_selectPattern->execute( |
| *this, |
| executionContext, |
| selectedNodeList); |
| |
| if (xobjectResult.null() == true) |
| { |
| nodesToTransform = &selectedNodeList; |
| } |
| else |
| { |
| nodesToTransform = &xobjectResult->nodeset(); |
| } |
| } |
| executionContext.pushXObjectPtr(xobjectResult); |
| |
| if(0 != executionContext.getTraceListeners()) |
| { |
| executionContext.fireSelectEvent( |
| SelectionEvent( |
| executionContext, |
| executionContext.getCurrentNode(), |
| *this, |
| XalanDOMString("select", executionContext.getMemoryManager()), |
| *m_selectPattern, |
| *nodesToTransform)); |
| } |
| |
| if (m_sortElemsCount > 0) |
| { |
| MutableNodeRefList& sortedNodeList = executionContext.createAndPushMutableNodeRefList(); |
| |
| if (nodesToTransform->getLength() > 1) |
| { |
| nodesToTransform = sortChildren( |
| executionContext, |
| *nodesToTransform, |
| sortedNodeList); |
| } |
| } |
| |
| return nodesToTransform; |
| } |
| |
| |
| |
| void |
| ElemForEach::releaseSelectedAndSortedNodeList( |
| StylesheetExecutionContext& executionContext) const |
| { |
| executionContext.popXObjectPtr(); |
| executionContext.releaseAndPopMutableNodeRefList(); |
| if (m_sortElemsCount > 0) |
| { |
| executionContext.releaseAndPopMutableNodeRefList(); |
| } |
| } |
| |
| |
| |
| const NodeRefListBase* |
| ElemForEach::sortChildren( |
| StylesheetExecutionContext& executionContext, |
| const NodeRefListBase& selectedNodeList, |
| MutableNodeRefList& sortedNodeList) const |
| { |
| typedef NodeSorter::NodeSortKeyVectorType NodeSortKeyVectorType; |
| typedef StylesheetExecutionContext::SetAndRestoreCurrentStackFrameIndex SetAndRestoreCurrentStackFrameIndex; |
| typedef StylesheetExecutionContext::ContextNodeListPushAndPop ContextNodeListPushAndPop; |
| |
| NodeSorter* sorter = executionContext.getNodeSorter(); |
| |
| NodeSortKeyVectorType& keys = sorter->getSortKeys(); |
| assert(keys.empty() == true); |
| |
| CollectionClearGuard<NodeSortKeyVectorType> guard(keys); |
| |
| // Reserve the space now... |
| keys.reserve(m_sortElemsCount); |
| |
| // Get some temporary strings to use for evaluting the AVTs... |
| const StylesheetExecutionContext::GetCachedString theTemp1(executionContext); |
| |
| XalanDOMString& langString = theTemp1.get(); |
| |
| const StylesheetExecutionContext::GetCachedString theTemp2(executionContext); |
| |
| XalanDOMString& scratchString = theTemp2.get(); |
| |
| // March backwards, performing a sort on each xsl:sort child. |
| // Probably not the most efficient method. |
| for(SortElemsVectorType::size_type i = 0; i < m_sortElemsCount; i++) |
| { |
| const ElemSort* const sort = m_sortElems[i]; |
| assert(sort != 0); |
| |
| const AVT* avt = sort->getLangAVT(); |
| |
| if(0 != avt) |
| { |
| avt->evaluate(langString, *this, executionContext); |
| } |
| |
| avt = sort->getDataTypeAVT(); |
| |
| if(0 != avt) |
| { |
| avt->evaluate(scratchString, *this, executionContext); |
| } |
| |
| bool treatAsNumbers = false; |
| |
| if (scratchString.empty() == false) |
| { |
| if (equals(scratchString, Constants::ATTRVAL_DATATYPE_NUMBER) == true) |
| { |
| treatAsNumbers = true; |
| } |
| else if (equals(scratchString, Constants::ATTRVAL_DATATYPE_TEXT) == false) |
| { |
| const XalanQNameByValue theQName(scratchString, executionContext.getMemoryManager(), this); |
| |
| if (theQName.getNamespace().length() == 0) |
| { |
| error( |
| executionContext, |
| XalanMessages::SortDataTypeMustBe, |
| sort->getLocator()); |
| } |
| else |
| { |
| warn( |
| executionContext, |
| XalanMessages::SortHasUnknownDataType, |
| sort->getLocator()); |
| } |
| } |
| } |
| |
| scratchString.clear(); |
| |
| avt = sort->getOrderAVT(); |
| |
| if(0 != avt) |
| { |
| avt->evaluate(scratchString, *this, executionContext); |
| } |
| |
| bool descending = false; |
| |
| if (scratchString.empty() == false) |
| { |
| if (equals(scratchString, Constants::ATTRVAL_ORDER_DESCENDING) == true) |
| { |
| descending = true; |
| } |
| else if (equals(scratchString, Constants::ATTRVAL_ORDER_ASCENDING) == false) |
| { |
| error( |
| executionContext, |
| XalanMessages::SortMustBeAscendOrDescend, |
| sort->getLocator()); |
| } |
| } |
| |
| scratchString.clear(); |
| |
| avt = sort->getCaseOrderAVT(); |
| |
| if(0 != avt) |
| { |
| avt->evaluate(scratchString, *this, executionContext); |
| } |
| |
| XalanCollationServices::eCaseOrder caseOrder = XalanCollationServices::eDefault; |
| |
| if (scratchString.empty() == false) |
| { |
| if (equals(scratchString, Constants::ATTRVAL_CASEORDER_UPPER) == true) |
| { |
| caseOrder = XalanCollationServices::eUpperFirst; |
| } |
| else if (equals(scratchString, Constants::ATTRVAL_CASEORDER_LOWER) == true) |
| { |
| caseOrder = XalanCollationServices::eLowerFirst; |
| } |
| else |
| { |
| error( |
| executionContext, |
| XalanMessages::SortCaseOrderMustBe, |
| sort->getLocator()); |
| } |
| } |
| |
| scratchString.clear(); |
| |
| keys.push_back( |
| NodeSortKey( |
| executionContext, |
| sort->getSelectPattern(), |
| treatAsNumbers, |
| descending, |
| caseOrder, |
| langString, |
| *this)); |
| } |
| |
| sortedNodeList = selectedNodeList; |
| |
| { |
| ContextNodeListPushAndPop theContextNodeListPushAndPop( |
| executionContext, |
| selectedNodeList); |
| |
| sorter->sort(executionContext, sortedNodeList); |
| } |
| |
| return &sortedNodeList; |
| } |
| #endif |
| |
| |
| |
| #if defined(XALAN_RECURSIVE_STYLESHEET_EXECUTION) |
| void |
| ElemForEach::execute(StylesheetExecutionContext& executionContext) const |
| { |
| assert(m_selectPattern != 0); |
| assert(executionContext.getCurrentNode() != 0); |
| |
| StylesheetExecutionContext::PushAndPopCurrentTemplate thePushAndPop(executionContext, 0); |
| |
| if (hasChildren() == true) |
| { |
| transformSelectedChildren( |
| executionContext, |
| this); |
| } |
| } |
| |
| |
| |
| void |
| ElemForEach::transformSelectedChildren( |
| StylesheetExecutionContext& executionContext, |
| const ElemTemplateElement* theTemplate) const |
| { |
| assert(m_selectPattern != 0); |
| assert(m_sortElemsCount == m_sortElems.size()); |
| |
| if (m_sortElemsCount == 0) |
| { |
| selectAndSortChildren( |
| executionContext, |
| theTemplate, |
| 0, |
| executionContext.getCurrentStackFrameIndex()); |
| } |
| else |
| { |
| typedef NodeSorter::NodeSortKeyVectorType NodeSortKeyVectorType; |
| typedef StylesheetExecutionContext::BorrowReturnNodeSorter BorrowReturnNodeSorter; |
| |
| BorrowReturnNodeSorter sorter(executionContext); |
| |
| NodeSortKeyVectorType& keys = sorter->getSortKeys(); |
| assert(keys.empty() == true); |
| |
| CollectionClearGuard<NodeSortKeyVectorType> guard(keys); |
| |
| // Reserve the space now... |
| keys.reserve(m_sortElemsCount); |
| |
| // Get some temporary strings to use for evaluting the AVTs... |
| StylesheetExecutionContext::GetCachedString theTemp1(executionContext); |
| |
| XalanDOMString& langString = theTemp1.get(); |
| |
| const StylesheetExecutionContext::GetCachedString theTemp2(executionContext); |
| |
| XalanDOMString& scratchString = theTemp2.get(); |
| |
| // March backwards, performing a sort on each xsl:sort child. |
| // Probably not the most efficient method. |
| for(SortElemsVectorType::size_type i = 0; i < m_sortElemsCount; i++) |
| { |
| const ElemSort* const sort = m_sortElems[i]; |
| assert(sort != 0); |
| |
| const AVT* avt = sort->getLangAVT(); |
| |
| if(0 != avt) |
| { |
| avt->evaluate(langString, *this, executionContext); |
| } |
| |
| avt = sort->getDataTypeAVT(); |
| |
| if(0 != avt) |
| { |
| avt->evaluate(scratchString, *this, executionContext); |
| } |
| |
| bool treatAsNumbers = false; |
| |
| if (scratchString.empty() == false) |
| { |
| if (equals(scratchString, Constants::ATTRVAL_DATATYPE_NUMBER) == true) |
| { |
| treatAsNumbers = true; |
| } |
| else if (equals(scratchString, Constants::ATTRVAL_DATATYPE_TEXT) == false) |
| { |
| const XalanQNameByValue theQName(scratchString, executionContext.getMemoryManager(), this); |
| |
| if (theQName.getNamespace().length() == 0) |
| { |
| error( |
| executionContext, |
| XalanMessages::SortDataTypeMustBe); |
| } |
| else |
| { |
| warn( |
| executionContext, |
| XalanMessages::SortHasUnknownDataType); |
| } |
| } |
| } |
| |
| clear(scratchString); |
| |
| avt = sort->getOrderAVT(); |
| |
| if(0 != avt) |
| { |
| avt->evaluate(scratchString, *this, executionContext); |
| } |
| |
| bool descending = false; |
| |
| if (scratchString.empty() == false) |
| { |
| if (equals(scratchString, Constants::ATTRVAL_ORDER_DESCENDING) == true) |
| { |
| descending = true; |
| } |
| else if (equals(scratchString, Constants::ATTRVAL_ORDER_ASCENDING) == false) |
| { |
| error( |
| executionContext, |
| XalanMessages::SortMustBeAscendOrDescend); |
| } |
| } |
| |
| clear(scratchString); |
| |
| avt = sort->getCaseOrderAVT(); |
| |
| if(0 != avt) |
| { |
| avt->evaluate(scratchString, *this, executionContext); |
| } |
| |
| XalanCollationServices::eCaseOrder caseOrder = XalanCollationServices::eDefault; |
| |
| if (scratchString.empty() == false) |
| { |
| if (equals(scratchString, Constants::ATTRVAL_CASEORDER_UPPER) == true) |
| { |
| caseOrder = XalanCollationServices::eUpperFirst; |
| } |
| else if (equals(scratchString, Constants::ATTRVAL_CASEORDER_LOWER) == true) |
| { |
| caseOrder = XalanCollationServices::eLowerFirst; |
| } |
| else |
| { |
| error( |
| executionContext, |
| XalanMessages::SortCaseOrderMustBe); |
| } |
| } |
| |
| clear(scratchString); |
| |
| keys.push_back( |
| NodeSortKey( |
| executionContext, |
| sort->getSelectPattern(), |
| treatAsNumbers, |
| descending, |
| caseOrder, |
| langString, |
| *this)); |
| } |
| |
| selectAndSortChildren( |
| executionContext, |
| theTemplate, |
| sorter.get(), |
| executionContext.getCurrentStackFrameIndex()); |
| } |
| } |
| |
| |
| |
| void |
| ElemForEach::selectAndSortChildren( |
| StylesheetExecutionContext& executionContext, |
| const ElemTemplateElement* theTemplate, |
| NodeSorter* sorter, |
| int selectStackFrameIndex) const |
| { |
| typedef StylesheetExecutionContext::SetAndRestoreCurrentStackFrameIndex SetAndRestoreCurrentStackFrameIndex; |
| |
| assert(m_selectPattern != 0); |
| |
| typedef XPathExecutionContext::BorrowReturnMutableNodeRefList BorrowReturnMutableNodeRefList; |
| |
| BorrowReturnMutableNodeRefList theGuard(executionContext); |
| |
| const NodeRefListBase* sourceNodes = 0; |
| |
| XObjectPtr xobjectResult; |
| |
| { |
| SetAndRestoreCurrentStackFrameIndex theSetAndRestore( |
| executionContext, |
| selectStackFrameIndex); |
| |
| xobjectResult = m_selectPattern->execute( |
| *this, |
| executionContext, |
| *theGuard); |
| |
| if (xobjectResult.null() == true) |
| { |
| sourceNodes = &*theGuard; |
| } |
| else |
| { |
| theGuard.release(); |
| |
| sourceNodes = &xobjectResult->nodeset(); |
| } |
| } |
| |
| if(0 != executionContext.getTraceListeners()) |
| { |
| executionContext.fireSelectEvent( |
| SelectionEvent( |
| executionContext, |
| executionContext.getCurrentNode(), |
| *this, |
| XalanDOMString("select", executionContext.getMemoryManager()), |
| *m_selectPattern, |
| *sourceNodes)); |
| } |
| |
| const NodeRefListBase::size_type nNodes = sourceNodes->getLength(); |
| |
| if (nNodes > 0) |
| { |
| // If there's not NodeSorter, or we've only selected one node, |
| // then just do the transform... |
| if (sorter == 0 || nNodes == 1) |
| { |
| transformSelectedChildren( |
| executionContext, |
| theTemplate, |
| *sourceNodes, |
| nNodes); |
| } |
| else |
| { |
| typedef StylesheetExecutionContext::SetAndRestoreCurrentStackFrameIndex SetAndRestoreCurrentStackFrameIndex; |
| typedef StylesheetExecutionContext::ContextNodeListPushAndPop ContextNodeListPushAndPop; |
| typedef StylesheetExecutionContext::BorrowReturnMutableNodeRefList BorrowReturnMutableNodeRefList; |
| |
| BorrowReturnMutableNodeRefList sortedSourceNodes(executionContext); |
| |
| *sortedSourceNodes = *sourceNodes; |
| |
| { |
| SetAndRestoreCurrentStackFrameIndex theStackFrameSetAndRestore( |
| executionContext, |
| selectStackFrameIndex); |
| |
| ContextNodeListPushAndPop theContextNodeListPushAndPop( |
| executionContext, |
| *sourceNodes); |
| |
| sorter->sort(executionContext, *sortedSourceNodes); |
| } |
| |
| transformSelectedChildren( |
| executionContext, |
| theTemplate, |
| *sortedSourceNodes, |
| nNodes); |
| } |
| } |
| } |
| |
| |
| |
| void |
| ElemForEach::transformSelectedChildren( |
| StylesheetExecutionContext& executionContext, |
| const ElemTemplateElement* theTemplate, |
| const NodeRefListBase& sourceNodes, |
| NodeRefListBase::size_type sourceNodesCount) const |
| { |
| if(executionContext.getTraceSelects() == true) |
| { |
| executionContext.traceSelect( |
| *this, |
| sourceNodes, |
| m_selectPattern); |
| } |
| |
| // Create an object to set and restore the context node list... |
| const StylesheetExecutionContext::ContextNodeListPushAndPop theContextNodeLisPushAndPop( |
| executionContext, |
| sourceNodes); |
| |
| for(NodeRefListBase::size_type i = 0; i < sourceNodesCount; i++) |
| { |
| XalanNode* const childNode = sourceNodes.item(i); |
| assert(childNode != 0); |
| |
| transformChild( |
| executionContext, |
| *this, |
| theTemplate, |
| childNode); |
| } |
| } |
| #endif |
| |
| |
| |
| const XPath* |
| ElemForEach::getXPath(XalanSize_t index) const |
| { |
| return index == 0 ? m_selectPattern : 0; |
| } |
| |
| |
| |
| } |
