XNodeSetBase.hpp

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/*
 * 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.
 */
#if !defined(XNODESETBASE_HEADER_GUARD_1357924680)
#define XNODESETBASE_HEADER_GUARD_1357924680
 
 
 
// Base include file.  Must be first.
#include <xalanc/XPath/XPathDefinitions.hpp>
 
 
 
// Base class header file.
#include <xalanc/XPath/XObject.hpp>
 
 
 
#include <xalanc/XPath/NodeRefListBase.hpp>
#include <xalanc/XPath/XNodeSetResultTreeFragProxy.hpp>
 
 
 
namespace XALAN_CPP_NAMESPACE {
 
 
 
/**
 * Class to hold XPath return types.
 */
class XALAN_XPATH_EXPORT XNodeSetBase : public XObject
{
public:
 
    typedef NodeRefListBase::size_type  size_type;
 
    typedef XObject     ParentType;
 
    virtual
    ~XNodeSetBase();
 
    // These methods are inherited from XObject ...
 
 
    virtual const XalanDOMString&
    getTypeString() const;
 
    virtual double
    num(XPathExecutionContext&  executionContext) const;
 
    using ParentType::num;
 
    virtual bool
    boolean(XPathExecutionContext&  executionContext) const;
 
    virtual const XalanDOMString&
    str(XPathExecutionContext&  executionContext) const;
 
    virtual const XalanDOMString&
    str() const;
 
    virtual void
    str(
            XPathExecutionContext&  executionContext,
            FormatterListener&      formatterListener,
            MemberFunctionPtr       function) const;
 
    virtual void
    str(
            FormatterListener&      formatterListener,
            MemberFunctionPtr       function) const;
 
    virtual void
    str(
            XPathExecutionContext&  executionContext,
            XalanDOMString&         theBuffer) const;
 
    virtual void
    str(XalanDOMString&     theBuffer) const;
 
    virtual double
    stringLength(XPathExecutionContext&     executionContext) const;
 
    virtual const XalanDocumentFragment&
    rtree() const;
 
    virtual const NodeRefListBase&
    nodeset() const = 0;
 
    virtual void
    ProcessXObjectTypeCallback(XObjectTypeCallback&     theCallbackObject);
 
    virtual void
    ProcessXObjectTypeCallback(XObjectTypeCallback&     theCallbackObject) const;
 
    virtual XalanNode*
    item(size_type  index) const = 0;
 
    virtual size_type
    getLength() const = 0;
 
protected:
 
    /**
     * Create an XNodeSetBase
     */
    XNodeSetBase(MemoryManager&     theMemoryManager);
 
    /**
     * Create an XNodeSetBase from another.
     *
     * @param source    object to copy
     */
    XNodeSetBase(
        const XNodeSetBase&     source,
        MemoryManager&          theMemoryManager);
 
    void
    clearCachedValues();
 
private:
 
    // Not implemented...
    XNodeSetBase();
    XNodeSetBase(const XNodeSetBase&);
    XNodeSetBase&
    operator=(const XNodeSetBase&);
 
    // Data members...
    XNodeSetResultTreeFragProxy     m_proxy;
 
    mutable XalanDOMString          m_cachedStringValue;
 
    mutable double                  m_cachedNumberValue;
};
 
 
 
}
 
 
 
#endif  // XNODESETBASE_HEADER_GUARD_1357924680