132 lines
5.6 KiB
C++
132 lines
5.6 KiB
C++
/*
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* Copyright (c) 2001-2007
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* DecisionSoft Limited. All rights reserved.
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* Copyright (c) 2004-2007
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* Oracle. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* $Id: DynamicContext.hpp,v 1.24 2007/11/29 16:53:00 jpcs Exp $
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*/
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#ifndef _DYNAMICCONTEXT_HPP
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#define _DYNAMICCONTEXT_HPP
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#include <xqilla/context/StaticContext.hpp>
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#include <xqilla/items/ATDurationOrDerived.hpp>
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class Sequence;
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class Item;
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class URIResolver;
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class VariableStore;
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class SequenceBuilder;
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class UpdateFactory;
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/// The execution time dynamic context interface
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class XQILLA_API DynamicContext : public StaticContext
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{
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public:
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virtual ~DynamicContext() {};
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virtual DynamicContext *createModuleDynamicContext(const DynamicContext* moduleCtx, XERCES_CPP_NAMESPACE_QUALIFIER MemoryManager *memMgr =
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XERCES_CPP_NAMESPACE_QUALIFIER XMLPlatformUtils::fgMemoryManager) const = 0;
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/** Resets the dynamic context, as if it had never been used */
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virtual void clearDynamicContext() = 0;
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/** Get the context Item */
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virtual Item::Ptr getContextItem() const = 0;
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/** Set the context item to item */
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virtual void setContextItem(const Item::Ptr &item) = 0;
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/** Get the context position */
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virtual size_t getContextPosition() const = 0;
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/** Set the context position */
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virtual void setContextPosition(size_t pos) = 0;
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/** Get the context size */
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virtual size_t getContextSize() const = 0;
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/** Set the context size */
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virtual void setContextSize(size_t size) = 0;
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/** get the variable store */
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virtual const VariableStore* getVariableStore() const = 0;
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/** set the variable store */
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virtual void setVariableStore(const VariableStore *store) = 0;
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/** get the variable store for globally scoped variables */
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virtual const VariableStore* getGlobalVariableStore() const = 0;
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/** set the variable store for globally scoped variables */
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virtual void setGlobalVariableStore(const VariableStore *store) = 0;
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/** set the value of an external global variable with the given uri/localname pair */
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virtual void setExternalVariable(const XMLCh *namespaceURI, const XMLCh *name, const Sequence &value) = 0;
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/** set the value of an external global variable with the given QName */
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virtual void setExternalVariable(const XMLCh *qname, const Sequence &value) = 0;
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/** Return the current time */
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virtual time_t getCurrentTime() const = 0;
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/** Set the current time */
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virtual void setCurrentTime(time_t newTime) = 0;
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/** Return the implicit timezone for this system.*/
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virtual ATDurationOrDerived::Ptr getImplicitTimezone() const = 0;
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/** Set the implicit timezone */
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virtual void setImplicitTimezone(const ATDurationOrDerived::Ptr &timezoneAsDuration) = 0;
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/////////////////////////////////////////
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// XQilla context specific accessors //
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/////////////////////////////////////////
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/**
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Register a callback object for resolving URIs. Multiple URIResolver
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objects can be registered with the DynamicContext at the same time.
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The most recently added URIResolver will be called first, and if it
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returns NULL, subsequent ones will be called - ending in a call to
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the fallback routines.
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If "adopt" is false, the DynamicContext will not
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adopt this object, making the user responsible for making sure that the
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URIResolver object's lifespan matches or exceeds the life of the
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DynamicContext.
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*/
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virtual void registerURIResolver(URIResolver *resolver, bool adopt) = 0;
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/** Returns the default URIResolver */
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virtual URIResolver *getDefaultURIResolver() const = 0;
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/** Sets the default URIResolver */
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virtual void setDefaultURIResolver(URIResolver *resolver, bool adopt) = 0;
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/** Parse an XML document from the provided InputSource */
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virtual Node::Ptr parseDocument(XERCES_CPP_NAMESPACE_QUALIFIER InputSource &srcToUse,
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const LocationInfo *location = 0, const QueryPathNode *projection = 0) = 0;
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/** Resolve the given uri (and baseUri) to an XML document. If the uri
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is relative, the base uri is obtained from the context. */
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virtual Sequence resolveDocument(const XMLCh* uri, const LocationInfo *location = 0,
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const QueryPathNode *projection = 0) = 0;
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/** Resolve the given uri (and baseUri) to a sequence of Node objects. If the uri
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is relative, the base uri is obtained from the context. */
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virtual Sequence resolveCollection(const XMLCh* uri, const LocationInfo *location = 0,
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const QueryPathNode *projection = 0) = 0;
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virtual Sequence resolveDefaultCollection(const QueryPathNode *projection = 0) = 0;
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/** Create a new SequenceBuilder, which is used to turn a
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stream of events into a Sequence. */
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virtual SequenceBuilder *createSequenceBuilder() const = 0;
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/** Creates a new UpdateFactory, used for performing updates.
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Caller owns the returned object, and should delete it */
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virtual UpdateFactory *createUpdateFactory() const = 0;
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/** Test if the query should be interrupted, and throw if so. */
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virtual void testInterrupt() const = 0;
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};
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#endif
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