TXFMConcatChains.hpp

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/*
 * Copyright 2003-2005 The Apache Software Foundation.
 *
 * Licensed 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.
 */

/*
 * XSEC
 *
 * TXFMConcatChain := Takes multiple input chains and then provides
 *                    BYTE_STREAM output for each chain in order.
 *
 * $Id: TXFMConcatChains.hpp,v 1.3 2005/02/03 13:50:12 milan Exp $
 *
 */

#include <xsec/framework/XSECDefs.hpp>
#include <xsec/transformers/TXFMBase.hpp>

class TXFMChain;

class DSIG_EXPORT TXFMConcatChains : public TXFMBase {

    #if defined(XSEC_NO_NAMESPACES)
    typedef vector<TXFMChain *>         TXFMChainVectorType
#else
    typedef std::vector<TXFMChain *>    TXFMChainVectorType;
#endif

#if defined(XSEC_SIZE_T_IN_NAMESPACE_STD)
    typedef std::size_t     size_type;
#else
    typedef size_t          size_type;
#endif

public:

    TXFMConcatChains(XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument *doc);
    ~TXFMConcatChains();

    // Methods to set the inputs.  For the concat class, this will
    // append the input to the last appended chain

    void setInput(TXFMBase *newInput);
    void setInput(TXFMChain *newInputChain);
    
    // Methods to get tranform output type and input requirement

    virtual TXFMBase::ioType getInputType(void);
    virtual TXFMBase::ioType getOutputType(void);
    virtual TXFMBase::nodeType getNodeType(void);

    // Methods to get output data

    virtual unsigned int readBytes(XMLByte * const toFill, const unsigned int maxToFill);
    virtual XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument *getDocument();
    virtual XERCES_CPP_NAMESPACE_QUALIFIER DOMNode *getFragmentNode();
    virtual const XMLCh * getFragmentId();
    
private:
    TXFMConcatChains();

    TXFMChainVectorType         m_chains;
    TXFMBase                    * mp_currentTxfm;
    size_type                   m_currentChain;
    bool                        m_complete;
};

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