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# Item.hpp

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    00001 /*
    00002  * Copyright (c) 2001, 2008,
    00003  *     DecisionSoft Limited. All rights reserved.
    00004  * Copyright (c) 2004, 2015 Oracle and/or its affiliates. All rights reserved.
    00005  *
    00006  *
    00007  * Licensed under the Apache License, Version 2.0 (the "License");
    00008  * you may not use this file except in compliance with the License.
    00009  * You may obtain a copy of the License at
    00010  *
    00011  *     http://www.apache.org/licenses/LICENSE-2.0
    00012  *
    00013  * Unless required by applicable law or agreed to in writing, software
    00014  * distributed under the License is distributed on an "AS IS" BASIS,
    00015  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    00016  * See the License for the specific language governing permissions and
    00017  * limitations under the License.
    00018  */
    00019
    00020 #ifndef _ITEM_HPP
    00021 #define _ITEM_HPP
    00022
    00023 #include <xqilla/framework/XQillaExport.hpp>
    00024 #include <xqilla/framework/ReferenceCounted.hpp>
    00025 #include <xercesc/util/XercesDefs.hpp>
    00026
    00027 XERCES_CPP_NAMESPACE_BEGIN
    00028 class XMLBuffer;
    00029 XERCES_CPP_NAMESPACE_END
    00030
    00031 // forward declare when we can
    00032 class XPath2MemoryManager;
    00033 class DynamicContext;
    00034 class EventHandler;
    00035
    00036 class XQILLA_API Item : public ReferenceCounted
    00037 {
    00038 public:
    00039   typedef RefCountPointer<const Item> Ptr;
    00040
    00042   static const XMLCh gXQilla[];
    00043
    00044   virtual bool isNode() const = 0;
    00045
    00046   virtual bool isAtomicValue() const = 0;
    00047
    00048   virtual bool isFunction() const = 0;
    00049
    00050   virtual const XMLCh* asString(const DynamicContext* context) const = 0;
    00051
    00052   virtual const XMLCh* getTypeURI() const = 0;
    00053
    00054   virtual const XMLCh* getTypeName() const = 0;
    00055
    00057   virtual void generateEvents(EventHandler *events, const DynamicContext *context,
    00058                               bool preserveNS = true, bool preserveType = true) const = 0;
    00059
    00061   virtual void *getInterface(const XMLCh *name) const = 0;
    00062
    00064   virtual void typeToBuffer(DynamicContext *context, XERCES_CPP_NAMESPACE_QUALIFIER XMLBuffer &buffer) const = 0;
    00065
    00066 protected:
    00067   Item() {}
    00068
    00069 private:
    00070   // copy constructor
    00071   Item (const Item & other);
    00072   // assignment operation
    00073   Item & operator=(const Item & item) ;
    00074 };
    00075
    00076 #endif
    00077