MappingElement.cc

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#include "CondCore/ORA/interface/Exception.h"
#include "MappingElement.h"
//
#include <set>
#include <sstream>

std::string
ora::MappingElement::classMappingElementType()
{
  static std::string s_classMappingElementType = "Class";
  return s_classMappingElementType;
}

std::string
ora::MappingElement::objectMappingElementType()
{
  static std::string s_objectMappingElementType = "Object";
  return s_objectMappingElementType;
}

std::string
ora::MappingElement::dependencyMappingElementType()
{
  static std::string s_dependencyMappingElementType = "Dependency";
  return s_dependencyMappingElementType;
}

std::string
ora::MappingElement::primitiveMappingElementType()
{
  static std::string s_primitiveMappingElementType = "Primitive";
  return s_primitiveMappingElementType;
}

std::string
ora::MappingElement::arrayMappingElementType()
{
  static std::string s_arrayMappingElementType = "Array";
  return s_arrayMappingElementType;
}

std::string
ora::MappingElement::CArrayMappingElementType()
{
  static std::string s_CArrayMappingElementType = "CArray";
  return s_CArrayMappingElementType;
}

std::string
ora::MappingElement::inlineCArrayMappingElementType()
{
  static std::string s_inlineCArrayMappingElementType = "InlineCArray";
  return s_inlineCArrayMappingElementType;
}

std::string
ora::MappingElement::OraReferenceMappingElementType()
{
  static std::string s_oraReferenceMappingElementType = "OraReference";
  return s_oraReferenceMappingElementType;
}

std::string
ora::MappingElement::OraPointerMappingElementType()
{
  static std::string s_oraPointerMappingElementType = "OraPointer";
  return s_oraPointerMappingElementType;
}

std::string
ora::MappingElement::uniqueReferenceMappingElementType()
{
  static std::string s_oraUniqueReferenceMappingElementType = "UniqueReference";
  return s_oraUniqueReferenceMappingElementType;
}

std::string
ora::MappingElement::OraArrayMappingElementType()
{
  static std::string s_oraArrayMappingElementType = "OraArray";
  return s_oraArrayMappingElementType;
}

std::string
ora::MappingElement::pointerMappingElementType()
{
  static std::string s_pointerMappingElementType = "Pointer";
  return s_pointerMappingElementType;
}

std::string
ora::MappingElement::referenceMappingElementType()
{
  static std::string s_referenceMappingElementType = "Reference";
  return s_referenceMappingElementType;
}

std::string
ora::MappingElement::blobMappingElementType()
{
  static std::string s_blobMappingElementType = "Blob";
  return s_blobMappingElementType;
}

std::string
ora::MappingElement::namedReferenceMappingElementType()
{
  static std::string s_namedReferenceMappingElementType = "NamedReference";
  return s_namedReferenceMappingElementType;
}

bool
ora::MappingElement::isValidMappingElementType( const std::string& elementType )
{
  return ( elementType == classMappingElementType() ||
           elementType == objectMappingElementType() ||
           elementType == dependencyMappingElementType() ||
           elementType == primitiveMappingElementType() ||
           elementType == arrayMappingElementType() ||
           elementType == CArrayMappingElementType() ||
           elementType == inlineCArrayMappingElementType() ||
           elementType == OraReferenceMappingElementType() ||
           elementType == OraPointerMappingElementType() ||
           elementType == uniqueReferenceMappingElementType() ||
           elementType == OraArrayMappingElementType() ||
           elementType == pointerMappingElementType() ||
           elementType == referenceMappingElementType() ||
           elementType == blobMappingElementType() ||
           elementType == namedReferenceMappingElementType() );
}

std::string
ora::MappingElement::elementTypeAsString( ora::MappingElement::ElementType elementType )
{
  switch ( elementType ) {
  case Class :
    return  classMappingElementType();
    break;
  case Object :
    return  objectMappingElementType();
    break;
  case Dependency :
    return  dependencyMappingElementType();
    break;
  case Primitive :
    return  primitiveMappingElementType();
    break;
  case Array :
    return  arrayMappingElementType();
    break;
  case CArray :
    return  CArrayMappingElementType();
    break;
  case InlineCArray :
    return  inlineCArrayMappingElementType();
    break;
  case OraReference :
    return  OraReferenceMappingElementType();
    break;
  case OraPointer :
    return  OraPointerMappingElementType();
    break;
  case UniqueReference :
    return  uniqueReferenceMappingElementType();
    break;
  case OraArray :
    return  OraArrayMappingElementType();
    break;
  case Reference :
    return  referenceMappingElementType();
    break;
  case Blob :
    return  blobMappingElementType();
    break;
  case NamedReference :
    return  namedReferenceMappingElementType();
    break;
  case Pointer :
    return  pointerMappingElementType();
    break;
  case Undefined :
    // This should never appear
    break;
  };

  std::stringstream ms;
  ms <<"Undefined mapping element type code="<< elementType;
  throwException( ms.str(),
                  "MappingElement::elementTypeAsString" );
  return "";
}


ora::MappingElement::ElementType
ora::MappingElement::elementTypeFromString( const std::string& elementType )
{
  // Check here the element type
  if ( !  isValidMappingElementType( elementType ) ) {
    throwException( "\"" + elementType + "\" is not a supported mapping element type",
                    "MappingElement::elementTypeFromString" );
  }

  ora::MappingElement::ElementType result = Undefined;

  if ( elementType == classMappingElementType() ) {
    return Class;
  }
  if ( elementType == objectMappingElementType() ) {
    return Object;
  }
  if ( elementType == dependencyMappingElementType() ) {
    return Dependency;
  }
  if ( elementType == primitiveMappingElementType() ) {
    return Primitive;
  }
  else if ( elementType == arrayMappingElementType() ) {
    return Array;
  }
  else if ( elementType == CArrayMappingElementType() ) {
    return CArray;
  }
  else if ( elementType == inlineCArrayMappingElementType() ) {
    return InlineCArray;
  }
  else if ( elementType == pointerMappingElementType() ) {
    return Pointer;
  }
  else if ( elementType == referenceMappingElementType() ) {
    return Reference;
  }
  else if ( elementType == OraReferenceMappingElementType() ) {
    return OraReference;
  }
  else if ( elementType == OraPointerMappingElementType() ) {
    return OraPointer;
  }
  else if ( elementType == uniqueReferenceMappingElementType() ) {
    return UniqueReference;
  }
  else if ( elementType == OraArrayMappingElementType() ) {
    return OraArray;
  }
  else if ( elementType == blobMappingElementType() ) {
    return Blob;
  }
  else if ( elementType == namedReferenceMappingElementType() ) {
    return NamedReference;
  }

  return result;
}

ora::MappingElement::MappingElement( const std::string& elementType,
                                     const std::string& variableName,
                                     const std::string& variableType,
                                     const std::string& tableName ):
  m_elementType( Undefined ),
  m_isDependentTree(false),
  m_scopeName( "" ),
  m_variableName( variableName ),
  m_variableNameForSchema( "" ),
  m_variableType( variableType ),
  m_tableName( tableName ),
  m_columnNames(),
  m_subElements()
{
  // Check here the element type
  m_elementType = elementTypeFromString( elementType );
  if(m_elementType == Dependency) m_isDependentTree = true;
}

ora::MappingElement::~MappingElement() {
}

namespace ora {
  void processTableHierarchy( const MappingElement& element,
                              std::set<std::string>& tableRegister,
                              std::vector<std::pair<std::string, std::string> >& tableList ){
    const std::string& tableName = element.tableName();
    std::set<std::string>::iterator iT = tableRegister.find( tableName );
    if( iT == tableRegister.end() ){
      if( element.columnNames().empty() ){
        throwException( "Mapping element for variable \""+element.variableName()+"\" does not specify column names.",
                        "MappingElement::tableHierarchy");
      }
      tableRegister.insert( tableName );
      tableList.push_back( std::make_pair(tableName,element.columnNames()[0]) );
    }
    for(MappingElement::const_iterator iEl = element.begin();
        iEl != element.end(); ++iEl ){
      processTableHierarchy( iEl->second, tableRegister, tableList );
    }
  }
}

std::vector<std::pair<std::string,std::string> >
ora::MappingElement::tableHierarchy() const{
  std::set<std::string> involvedTables;
  std::vector<std::pair<std::string,std::string> > tableList;
  processTableHierarchy( *this, involvedTables,tableList );
  return tableList;
}

std::string ora::MappingElement::idColumn() const {
  if( m_columnNames.empty() ) throwException( "No column names found in the mapping element.",
                                              "MappingElement::idColumn");
  return m_columnNames.front();
}

std::string ora::MappingElement::pkColumn() const {
  size_t ind = 0;
  if( m_isDependentTree ) ind = 1;
  if( m_columnNames.size() < ind+1 )
    throwException( "Column names not found as expected in the mapping element.",
                    "MappingElement::idColumn");
  return m_columnNames.at( ind );
}

std::vector<std::string> ora::MappingElement::recordIdColumns() const {
  size_t ind = 0;
  if( m_isDependentTree ) ind = 1;
  size_t cols = m_columnNames.size();
  if( cols < ind+2 ){
    std::stringstream message;
    message <<"Column names for variable=\""<< m_variableName<<"\" of type=\""<<elementTypeAsString( m_elementType )<<"\" are not as expected.";
    throwException( message.str(),
                    "MappingElement::recordIdColumns");
  }
  std::vector<std::string> ret;
  for( size_t i=ind+1;i<cols;i++){
    ret.push_back( m_columnNames[i] );
  }
  return ret;
}

std::string ora::MappingElement::posColumn() const {
  size_t ind = 0;
  if( m_isDependentTree ) ind = 1;
  if( m_columnNames.size() < ind+2 )
    throwException( "Column names not found as expected in the mapping element.",
                    "MappingElement::posColumn");
  return m_columnNames.back();
}

ora::MappingElement&
ora::MappingElement::appendSubElement( const std::string& elementType,
                                       const std::string& variableName,
                                       const std::string& variableType,
                                       const std::string& tableName )
{
  // Check whether the current element type supports other subelements
  if ( ! ( m_elementType == Class ||
           m_elementType == Object ||
           m_elementType == Dependency ||
           m_elementType == Array ||
           m_elementType == CArray ||
           m_elementType == InlineCArray ||
           m_elementType == OraPointer ||
           m_elementType == OraArray ) ) {
    throwException( "Attempted to insert a sub-element under an element of type \"" +
                    ora::MappingElement::elementTypeAsString( m_elementType ) + "\"",
                    "MappingElement::appendSubElement" );
  }
  if(m_subElements.find( variableName )!=m_subElements.end()){
    throwException("Attribute name \""+variableName+"\" is already defined in the mapping element of variable \""+
                   m_variableName+"\".",
                   "MappingElement::appendSubElement");
  }
  
  MappingElement& newElement =
    m_subElements.insert( std::make_pair( variableName,ora::MappingElement( elementType,
                                                                            variableName,
                                                                            variableType,
                                                                            tableName ) ) ).first->second;
  newElement.m_isDependentTree = m_isDependentTree;
  if ( m_scopeName.empty() ) {
    newElement.m_scopeName = m_variableName;
  } else {
    newElement.m_scopeName = m_scopeName + "::" + m_variableName;
  }
  
  return newElement;
}

void
ora::MappingElement::alterType( const std::string& elementType )
{
  // Check here the element type
  if ( !  isValidMappingElementType( elementType ) ) {
    throwException( "\"" + elementType + "\" is not a supported mapping element type",
                    "MappingElement::alterType");
  }
  ElementType elementTypeCode = elementTypeFromString( elementType );
  if(m_elementType != elementTypeCode){
    m_elementType = elementTypeCode;      
    // clear sub elements when no supported by the new type specified
    if ( ! ( m_elementType == Class ||
             m_elementType == Object ||
             m_elementType == Dependency ||
             m_elementType == Array ||
             m_elementType == CArray ||
             m_elementType == InlineCArray ||
             m_elementType == OraPointer ||
             m_elementType == OraArray  ) ) {
      m_subElements.clear();
    }
  }
}

void
ora::MappingElement::alterTableName( const std::string& tableName )
{
  if ( tableName == m_tableName ) return;

  for ( iterator iElement = this->begin();
        iElement != this->end(); ++iElement ) {
    ora::MappingElement& subElement = iElement->second;
    if ( subElement.elementType() != Array &&
         subElement.elementType() != CArray &&
         subElement.elementType() != OraArray  ) {
      subElement.alterTableName( tableName );
    }
  }
  m_tableName = tableName;
}

void
ora::MappingElement::setColumnNames( const std::vector< std::string >& columns )
{
  m_columnNames = columns;
  if ( m_subElements.empty() ) return;
}

void ora::MappingElement::override(const MappingElement& source){
  if(variableType()==source.variableType() || elementType()==source.elementType())
  {
    alterType(MappingElement::elementTypeAsString(source.elementType()));
    alterTableName(source.tableName());
    setColumnNames(source.columnNames());
    for(iterator iel=begin();
        iel!=end();++iel){
      const_iterator iTarg = source.find(iel->first);
      if(iTarg!=source.end()){
        iel->second.override(iTarg->second);
      }
    }
  }  

}

void ora::MappingElement::printXML( std::ostream& outputStream, std::string indentation ) const {
  outputStream << indentation << "<"<<elementTypeString()<<" name=\""<<m_variableName<<"\" type=\""<<m_variableType<<
    "\" table=\""<<m_tableName<<"\"";
  if( !m_columnNames.empty()) {
    outputStream << " columns=\"";
    for( std::vector<std::string>::const_iterator iC=m_columnNames.begin(); iC != m_columnNames.end(); ++iC ){
      if( iC != m_columnNames.begin() ) outputStream << ",";
      outputStream << *iC;
    }
    outputStream << "\"";
  }
  outputStream << " >"<< std::endl;
  for( std::map< std::string, MappingElement >::const_iterator iM = m_subElements.begin();
       iM != m_subElements.end(); ++iM ){
    iM->second.printXML( outputStream, indentation+" " );
  }
  outputStream <<  indentation << "</"<<elementTypeString()<<">"<< std::endl;
}