ossimGpkgInfo Class Reference

GeoPackage info class. More...

#include <ossimGpkgInfo.h>

Inheritance diagram for ossimGpkgInfo:

Public Member Functions
	ossimGpkgInfo ()
	default constructor More...
virtual	~ossimGpkgInfo ()
	virtual destructor More...
virtual bool	open (const ossimFilename &file)
	open method. More...
virtual std::ostream &	print (std::ostream &out) const
	Print method. More...
Public Member Functions inherited from ossimInfoBase
	ossimInfoBase ()
	default constructor More...
virtual bool	open (std::shared_ptr< ossim::istream > &str, const std::string &connectionString)
	open method. More...
void	setProcessOverviewFlag (bool flag)
	Sets the overview flag. More...
bool	getProcessOverviewFlag () const
	Method to get the overview flag. More...
virtual bool	getKeywordlist (ossimKeywordlist &kwl) const
	Method to dump info to a keyword list. More...
virtual bool	getKeywordlist (ossimKeywordlist &kwl, ossim_uint32 entryIndex) const
	Method to dump info to a keyword list. More...
Public Member Functions inherited from ossimReferenced
	ossimReferenced ()
	ossimReferenced (const ossimReferenced &)
ossimReferenced &	operator= (const ossimReferenced &)
void	ref () const
	increment the reference count by one, indicating that this object has another pointer which is referencing it. More...
void	unref () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...
void	unref_nodelete () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...
int	referenceCount () const

Private Attributes
ossimFilename	m_file

Additional Inherited Members
Protected Member Functions inherited from ossimInfoBase
virtual	~ossimInfoBase ()
	virtual destructor More...
Protected Member Functions inherited from ossimReferenced
virtual	~ossimReferenced ()
Protected Attributes inherited from ossimInfoBase
bool	theOverviewFlag

Detailed Description

GeoPackage info class.

Encapsulates the listgeo functionality.

Definition at line 26 of file ossimGpkgInfo.h.

Constructor & Destructor Documentation

ossimGpkgInfo()

ossimGpkgInfo::ossimGpkgInfo

(

)

default constructor

Definition at line 31 of file ossimGpkgInfo.cpp.

   : ossimInfoBase(),
     m_file()
{
}

~ossimGpkgInfo()

ossimGpkgInfo::~ossimGpkgInfo ( )

virtual

virtual destructor

Definition at line 37 of file ossimGpkgInfo.cpp.

{
}

Member Function Documentation

open()

bool ossimGpkgInfo::open ( const ossimFilename &  file )

virtual

open method.

Parameters

file	File name to open.

Returns

true on success false on error.

Reimplemented from ossimInfoBase.

Definition at line 41 of file ossimGpkgInfo.cpp.

References ossimString::c_str(), ossim_gpkg::checkSignature(), m_file, and ossimString::size().

{
   bool result = false;
   
   if ( file.size() ) // Check for empty filename.
   {
      std::ifstream str;
      str.open( file.c_str(), std::ios_base::in | std::ios_base::binary);

      if ( str.good() ) // Open good...
      {
         if ( ossim_gpkg::checkSignature( str ) ) // Has "SQLite format 3" signature.
         {
            m_file = file;
            result = true;
         }
      }
   }

   return result;
}

print()

std::ostream & ossimGpkgInfo::print ( std::ostream &  out ) const

virtual

Print method.

Parameters

out	Stream to print to.

Returns

std::ostream&

Implements ossimInfoBase.

Definition at line 63 of file ossimGpkgInfo.cpp.

{
   static const char MODULE[] = "ossimGpkgInfo::open";
   
   if ( traceDebug() )
   {
      ossimNotify(ossimNotifyLevel_DEBUG)
         << MODULE << " entered..."
         << "File:  " << m_file.c_str()
         << std::endl;
   }

   // Check for empty filename.
   if (m_file.size())
   {
      ossimKeywordlist kwl;

      std::ifstream fileStream;
      fileStream.open(m_file.c_str(), std::ios_base::in | std::ios_base::binary);
      char APP_ID[5];
      fileStream.seekg( 68, std::ios_base::beg );
      fileStream.read(APP_ID, 4);
      APP_ID[4] = '\0';
      std::string appId(APP_ID);
      kwl.addPair("gpkg.", "version", appId, true);
      fileStream.close();

      sqlite3* db;
      
      int rc = sqlite3_open_v2( m_file.c_str(), &db, SQLITE_OPEN_READONLY, 0);
      if ( rc == SQLITE_OK )
      {
         // Get the gpkg_contents records:
         std::string tableName = "gpkg_contents";
         std::vector< ossimRefPtr<ossimGpkgDatabaseRecordBase> > records;
         if ( ossim_gpkg::getTableRows( db, tableName, records ) )
         {
            std::vector< ossimRefPtr<ossimGpkgDatabaseRecordBase> >::const_iterator i =
               records.begin();
            ossim_int32 index = 0;
            while ( i != records.end() )
            {
               std::string prefix = "gpkg.";
               prefix += tableName;
               prefix += ossimString::toString(index++).string();
               prefix += ".";
               (*i)->saveState( kwl, prefix );
               ++i;
            } 
         }

         records.clear();

         // Get the gpkg_spatial_ref_sys record:
         tableName = "gpkg_spatial_ref_sys";
         if ( ossim_gpkg::getTableRows( db, tableName, records ) )
         {
            std::vector< ossimRefPtr<ossimGpkgDatabaseRecordBase> >::const_iterator i =
               records.begin();
            ossim_int32 index = 0;
            while ( i != records.end() )
            {
               std::string prefix = "gpkg.";
               prefix += tableName;
               prefix += ossimString::toString(index++).string();
               prefix += ".";
               (*i)->saveState( kwl, prefix );
               ++i;
            }
         }

         records.clear();

         // Get the gpkg_tile_matrix_set records:
         tableName = "gpkg_tile_matrix_set";
         if ( ossim_gpkg::getTableRows( db, tableName, records ) )
         {
            std::vector< ossimRefPtr<ossimGpkgDatabaseRecordBase> >::const_iterator i =
               records.begin();
            ossim_int32 index = 0;
            while ( i != records.end() )
            {
               std::string prefix = "gpkg.";
               prefix += tableName;
               prefix += ossimString::toString(index++).string();
               prefix += ".";
               (*i)->saveState( kwl, prefix );
               ++i;

               if ( traceTiles() )
               {
                  std::string key = "table_name";
                  std::string tileTableName = kwl.findKey( prefix, key );
                  if ( tileTableName.size() )
                  {
                     ossim_gpkg::printTiles( db, tileTableName,
                                             ossimNotify(ossimNotifyLevel_DEBUG) );
                  }
               }
            } 
         }

         records.clear();

         // Get the gpkg_tile_matrix_set records:
         tableName = "gpkg_tile_matrix";
         if ( ossim_gpkg::getTableRows( db, tableName, records ) )
         {
            std::vector< ossimRefPtr<ossimGpkgDatabaseRecordBase> >::const_iterator i =
               records.begin();
            ossim_int32 index = 0;
            while ( i != records.end() )
            {
               std::string prefix = "gpkg.";
               prefix += tableName;
               prefix += ossimString::toString(index++).string();
               prefix += ".";
               (*i)->saveState( kwl, prefix );
               ++i;
            } 
         }

         records.clear();
         
         // Get the nsg_tile_matrix_extent records:
         tableName = "nsg_tile_matrix_extent";
         if ( ossim_gpkg::getTableRows( db, tableName, records ) )
         {
            std::vector< ossimRefPtr<ossimGpkgDatabaseRecordBase> >::const_iterator i =
               records.begin();
            ossim_int32 index = 0;
            while ( i != records.end() )
            {
               std::string prefix = "gpkg.";
               prefix += tableName;
               prefix += ossimString::toString(index++).string();
               prefix += ".";
               (*i)->saveState( kwl, prefix );
               ++i;
            } 
         }



         if ( kwl.getSize() )
         {
            out << kwl << std::endl;
         }
      }

      sqlite3_close(db);
      db = 0;
   }

   return out;
}

Member Data Documentation

m_file

ossimFilename ossimGpkgInfo::m_file

private

Definition at line 56 of file ossimGpkgInfo.h.

Referenced by open().

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The documentation for this class was generated from the following files:

• ossimGpkgInfo.h
• ossimGpkgInfo.cpp