131 lines
4 KiB
C++
131 lines
4 KiB
C++
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/*
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* Copyright (c) 2001-2006
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* DecisionSoft Limited. All rights reserved.
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* Copyright (c) 2004-2006
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* Progress Software Corporation. All rights reserved.
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* Copyright (c) 2004-2006
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* Oracle. All rights reserved.
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*
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* See the file LICENSE for redistribution information.
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*
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* $Id: NodeTest.hpp,v 1.10 2006/11/01 16:37:11 jpcs Exp $
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*/
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#ifndef _NODETEST_HPP
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#define _NODETEST_HPP
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#include <xqilla/framework/XQillaExport.hpp>
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#include <xqilla/runtime/Result.hpp>
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#include <xqilla/runtime/ResultImpl.hpp>
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#include <xqilla/schema/SequenceType.hpp>
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class StaticContext;
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class DynamicContext;
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/**
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* This class represents a NodeTest production from the grammar,
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* and provides methods for filtering a Result containing Node items,
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* and determining if a single Item matches.
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*/
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class XQILLA_API NodeTest
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{
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public:
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NodeTest();
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virtual ~NodeTest();
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/** Method for returning arbitrary interfaces from the implementations */
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virtual void *getInterface(const XMLCh *name) const;
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/// Filters the given Result, returning only Items that match the NodeTest
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Result filterResult(const Result &toFilter, const LocationInfo *info) const;
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///check if a node has to be placed in the result set
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bool filterNode(Node::Ptr node, DynamicContext* context, const LocationInfo *info) const;
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void staticResolution(StaticContext *context, const LocationInfo *location);
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///gets the sequence type used to match the nodes
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SequenceType::ItemType* getItemType() const;
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///set function for private member
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void setItemType(SequenceType::ItemType* type);
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///gets the name of the node we are selecting
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const XMLCh* getNodeName() const;
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///set function for private member
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void setNodeName(const XMLCh* name);
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///gets the uri of the node we are selecting
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const XMLCh* getNodeUri() const;
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///set function for private member
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void setNodeUri(const XMLCh* uri);
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///gets the prefix of the node we are selecting
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const XMLCh* getNodePrefix() const;
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///set function for private member
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void setNodePrefix(const XMLCh* prefix);
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///returns whether the prefix has been set (instead of the uri)
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bool isNodePrefixSet() const;
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///gets the node type we are selecting
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const XMLCh *getNodeType() const;
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///set node type looked for
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void setNodeType(const XMLCh *type);
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///retuns whether the type has been set in this NavStep
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bool isNodeTypeSet() const;
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///returns true if the Node Name ia a wildcard
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bool getNameWildcard() const;
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///sets the wildcard nodeName bool
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void setNameWildcard(bool value = true);
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///returns true if the Node prefix ia a wildcard
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bool getNamespaceWildcard() const;
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///sets the prefix wildcard bool
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void setNamespaceWildcard(bool value = true);
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///returns true if the type is a wildcard
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bool getTypeWildcard() const;
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///sets the type wildcard bool
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void setTypeWildcard(bool value = true);
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/// returns true if the following step is a child axis (for optimisation reasons)
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bool getHasChildren() const;
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/// sets whether the following step is a child axis
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void setHasChildren(bool value = true);
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void getStaticType(StaticType &st, const StaticContext *context,
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bool &isExact, const LocationInfo *location) const;
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protected:
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///check a node's type against _type, considers wildcard
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bool checkNodeType(Node::Ptr node) const;
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///check a node's name against _name, considers wildcard
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bool checkNodeName(Node::Ptr node, const DynamicContext *context) const;
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/**
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* Performs filtering based on type or name.
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*/
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class XQILLA_API FilterResult : public ResultImpl
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{
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public:
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FilterResult(const LocationInfo *info, const Result &toFilter, const NodeTest *nodeTest);
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virtual ~FilterResult() {}
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Item::Ptr next(DynamicContext *context);
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std::string asString(DynamicContext *context, int indent) const;
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protected:
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Result toFilter_;
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const NodeTest *nodeTest_;
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};
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protected:
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const XMLCh* _name,*_uri,*_prefix;
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const XMLCh* _type;
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bool _wildcardName, _wildcardNamespace, _wildcardType, _usePrefix, _hasChildren;
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SequenceType::ItemType* _itemType;
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};
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#endif
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