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writeengine/xml/we_xmlgenproc.h

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+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; version 2 of
+   the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+/***********************************************************************
+ *   $Id: we_xmlgenproc.h 4450 2013-01-21 14:13:24Z rdempsey $
+ *
+ ***********************************************************************/
+/** @file */
+#ifndef WE_XMLGENPROC_H
+#define WE_XMLGENPROC_H
+
+#include <libxml/parser.h>
+#include <libxml/xmlwriter.h>
+#include <string>
+#include <vector>
+
+#include "calpontsystemcatalog.h"
+#include "we_log.h"
+#include "we_xmlgendata.h"
+
+#if defined(_MSC_VER) && defined(WRITEENGINEXMLGENPROC_DLLEXPORT)
+#define EXPORT __declspec(dllexport)
+#else
+#define EXPORT
+#endif
+
+namespace WriteEngine
+{
+struct SysCatColumn
+{
+    execplan::CalpontSystemCatalog::OID          oid;
+    execplan::CalpontSystemCatalog::ColType      colType;
+    execplan::CalpontSystemCatalog::TableColName tableColName;
+};
+typedef std::vector<SysCatColumn> SysCatColumnList;
+
+class XMLGenData;
+
+/** @brief Generates job_xxx.xml file (for cpimport.bin) using XMLGenData as
+ *  input.  Can also be used to generate an XML-formatted report.
+ *
+ *  This class was moved from XMLProc, formerly in tools/dbloadxml.  It was
+ *  moved to writeengine/xml so that both colxml and cpimport.bin could use it.
+ */
+class XMLGenProc
+{
+public:
+
+    /** @brief XMLGenProc constructor
+     *
+     * @param mgr The input data used to generate a Job XML file.
+     * @param bUseXmlLogFile Log info/errors to Job XML log file.
+     * @param bSysCatRpt Generating SysCat report (true) or XML file (false)
+     */
+    EXPORT XMLGenProc(XMLGenData* mgr, bool bUseXmlLogFile, bool bSysCatRpt);
+    EXPORT ~XMLGenProc();
+
+    /** @brief start constructing XML file document.
+     */
+    EXPORT void  startXMLFile( );
+    
+     /** @brief Creates table tag for the specified table.
+     *
+     * @param table Name of table for which the table tag is to be generated.
+     */ 
+    EXPORT void  makeTableData(
+        const execplan::CalpontSystemCatalog::TableName& table);
+
+    /** @brief Creates column tags for the specified table.
+     *
+     * @param table Name of table for which the column tags are to be generated.
+     * @return true means column tags created; else false is returned
+     */  
+    EXPORT bool  makeColumnData(
+        const execplan::CalpontSystemCatalog::TableName& table);
+    
+    /** @brief Generate Job XML file name
+     */   
+    EXPORT std::string genJobXMLFileName( ) const;
+
+    /** @brief Write xml file document to the destination Job XML file.
+     *
+     * @param xmlFileName Name of XML file to be generated.
+     */   
+    EXPORT void  writeXMLFile( const std::string& xmlFileName );
+
+    /** @brief log a message.
+     *
+     * @param msg The message to be logged to the error log file.
+     */
+    EXPORT void logErrorMessage(const std::string& msg);
+    std::string errorString() { return fErrorString; }
+
+    /** @brief set debug level
+     */
+    void setDebugLevel( int dbg ) { fDebugLevel = dbg; }
+
+protected:
+
+private:
+    XMLGenProc(const XMLGenProc&);             // disable default copy ctor
+    XMLGenProc& operator=(const XMLGenProc&);  // disable default assignment
+    void getColumnsForTable(const std::string& schema,
+        const std::string& table, SysCatColumnList& colList);
+    void sortColumnsByPosition(SysCatColumnList &columns);
+ 
+    Log               fLog;
+    xmlDocPtr         fDoc;
+    xmlTextWriterPtr  fWriter;
+    std::string       fErrorString;
+    int               fDebugLevel;
+    XMLGenData*       fInputMgr;    // Input data used to generate Job XML file
+    bool              fSysCatRpt;   // True colxml output or a syscat report
+    bool              fUseXmlLogFile;//Log info/errors to Job XML log file
+};
+
+}                                                 // namespace WriteEngine
+
+#undef EXPORT
+
+#endif