ossimGdalFactory Class Reference

#include <ossimGdalFactory.h>

Inheritance diagram for ossimGdalFactory:

Public Member Functions
virtual	~ossimGdalFactory ()
virtual ossimImageHandler *	open (const ossimFilename &fileName, bool openOverview=true) const
	open that takes a filename. More...
virtual ossimImageHandler *	open (const ossimKeywordlist &kwl, const char *prefix=0) const
virtual ossimRefPtr< ossimImageHandler >	openOverview (const ossimFilename &file) const
	Open overview that takes a file name. More...
virtual ossimObject *	createObject (const ossimString &typeName) const
virtual ossimObject *	createObject (const ossimKeywordlist &kwl, const char *prefix=0) const
virtual void	getTypeNameList (std::vector< ossimString > &typeList) const
virtual void	getSupportedExtensions (ossimImageHandlerFactoryBase::UniqueStringList &extensionList) const
virtual void	getImageHandlersBySuffix (ossimImageHandlerFactoryBase::ImageHandlerList &result, const ossimString &ext) const
virtual void	getImageHandlersByMimeType (ossimImageHandlerFactoryBase::ImageHandlerList &result, const ossimString &mimeType) const
Public Member Functions inherited from ossimImageHandlerFactoryBase
virtual ossimRefPtr< ossimImageHandler >	open (std::shared_ptr< ossim::istream > &str, const std::string &connectionString, bool openOverview=true) const
	Open method that takes a stream. More...
virtual ossimRefPtr< ossimImageHandler >	open (std::shared_ptr< ossim::ImageHandlerState > state) const
virtual ossimRefPtr< ossimImageHandler >	openOverview (std::shared_ptr< ossim::istream > &str, const ossimString &connectionString) const
	Open method that takes a stream. More...
Public Member Functions inherited from ossimObjectFactory
virtual	~ossimObjectFactory ()
Public Member Functions inherited from ossimObject
	ossimObject ()
virtual	~ossimObject ()
virtual ossimObject *	dup () const
virtual ossimString	getShortName () const
virtual ossimString	getLongName () const
virtual ossimString	getDescription () const
virtual ossimString	getClassName () const
virtual RTTItypeid	getType () const
virtual bool	canCastTo (ossimObject *obj) const
virtual bool	canCastTo (const RTTItypeid &id) const
virtual bool	canCastTo (const ossimString &parentClassName) const
virtual bool	saveState (ossimKeywordlist &kwl, const char *prefix=0) const
virtual bool	loadState (const ossimKeywordlist &kwl, const char *prefix=0)
virtual std::ostream &	print (std::ostream &out) const
	Generic print method. More...
virtual bool	isEqualTo (const ossimObject &obj, ossimCompareType compareType=OSSIM_COMPARE_FULL) const
virtual void	accept (ossimVisitor &visitor)
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

Static Public Member Functions
static ossimGdalFactory *	instance ()

Protected Member Functions
	ossimGdalFactory ()
	ossimGdalFactory (const ossimGdalFactory &)
void	operator= (const ossimGdalFactory &)
Protected Member Functions inherited from ossimReferenced
virtual	~ossimReferenced ()

Static Protected Attributes
static ossimGdalFactory *	theInstance = 0

Additional Inherited Members
Public Types inherited from ossimImageHandlerFactoryBase
typedef UniqueList< ossimString >	UniqueStringList
typedef std::vector< ossimRefPtr< ossimImageHandler > >	ImageHandlerList

Detailed Description

Definition at line 25 of file ossimGdalFactory.h.

Constructor & Destructor Documentation

~ossimGdalFactory()

ossimGdalFactory::~ossimGdalFactory ( )

virtual

Definition at line 32 of file ossimGdalFactory.cpp.

References theInstance.

{
   theInstance = (ossimGdalFactory*)NULL;
}

ossimGdalFactory() [1/2]

ossimGdalFactory::ossimGdalFactory ( )

inlineprotected

Definition at line 74 of file ossimGdalFactory.h.

Referenced by instance().

{}

ossimGdalFactory() [2/2]

ossimGdalFactory::ossimGdalFactory ( const ossimGdalFactory &  )

inlineprotected

Definition at line 75 of file ossimGdalFactory.h.

{}

Member Function Documentation

createObject() [1/2]

ossimObject * ossimGdalFactory::createObject ( const ossimString &  typeName ) const

virtual

Creates an object given a type name.

Implements ossimObjectFactory.

Definition at line 218 of file ossimGdalFactory.cpp.

References STATIC_TYPE_NAME.

Referenced by createObject().

{
   if(STATIC_TYPE_NAME(ossimHdfReader) == typeName)
   {
     return new ossimHdfReader();
   }
   if(STATIC_TYPE_NAME(ossimGdalTileSource) == typeName)
   {
      return new ossimGdalTileSource();
   }
   if(STATIC_TYPE_NAME(ossimOgrGdalTileSource) == typeName)
   {
      return new ossimOgrGdalTileSource();
   }
   
   return (ossimObject*)0;
}

createObject() [2/2]

ossimObject * ossimGdalFactory::createObject ( const ossimKeywordlist &  kwl, const char *  prefix = 0  ) const

virtual

Creates and object given a keyword list.

Implements ossimObjectFactory.

Definition at line 236 of file ossimGdalFactory.cpp.

References createObject(), ossimKeywordNames::FILENAME_KW, ossimKeywordlist::find(), ossimObject::loadState(), open(), ossimRefPtr< T >::release(), STATIC_TYPE_NAME, ossimKeywordNames::TYPE_KW, and ossimRefPtr< T >::valid().

{
   ossimRefPtr<ossimObject> result;
   const char* type = kwl.find(prefix, ossimKeywordNames::TYPE_KW);

   if(type)
   {
      if (ossimString(type).trim() == STATIC_TYPE_NAME(ossimImageHandler))
      {
         const char* lookup = kwl.find(prefix, ossimKeywordNames::FILENAME_KW);
         if (lookup)
         {
            // Call the open that takes a filename...
            result = this->open(kwl, prefix);//ossimFilename(lookup));
         }
      }
      else
      {
         result = createObject(ossimString(type));
         if(result.valid())
         {
            result->loadState(kwl, prefix);
         }
      }
   }

   return result.release();
}

getImageHandlersByMimeType()

void ossimGdalFactory::getImageHandlersByMimeType ( ossimImageHandlerFactoryBase::ImageHandlerList &  result, const ossimString &  mimeType  ) const

virtual

Reimplemented from ossimImageHandlerFactoryBase.

Definition at line 332 of file ossimGdalFactory.cpp.

{
   int driverCount = GDALGetDriverCount();
   int idx = 0;
   
   for(idx = 0; idx < driverCount; ++idx)
   {
      GDALDriverH driver =  GDALGetDriver(idx);  
      
      if(driver)
      {
         const char* metaData = GDALGetMetadataItem(driver, GDAL_DMD_MIMETYPE, 0);
         int nMetaData = metaData ? strlen(metaData) : 0;
         if(metaData && nMetaData>0 )
         {
            if(ossimString(metaData) == mimeType)
            {
               result.push_back(new ossimGdalTileSource());
               return;
            }
         }
      }
   }
}

getImageHandlersBySuffix()

void ossimGdalFactory::getImageHandlersBySuffix ( ossimImageHandlerFactoryBase::ImageHandlerList &  result, const ossimString &  ext  ) const

virtual

Reimplemented from ossimImageHandlerFactoryBase.

Definition at line 310 of file ossimGdalFactory.cpp.

References ossimString::downcase(), ossimImageHandlerFactoryBase::UniqueList< T >::getList(), getSupportedExtensions(), and ossimString::push_back().

{
   if ( ext == "shp" )
   {
      result.push_back(new ossimOgrGdalTileSource);
   }
   else
   {
      ossimImageHandlerFactoryBase::UniqueStringList extList;
      getSupportedExtensions(extList);
      
      ossimString testExt = ext.downcase();
      
      if(std::find(extList.getList().begin(),
                   extList.getList().end(), testExt) != extList.getList().end())
      {
         result.push_back(new ossimGdalTileSource);
      }
   }
}

getSupportedExtensions()

void ossimGdalFactory::getSupportedExtensions ( ossimImageHandlerFactoryBase::UniqueStringList &  extensionList ) const

virtual

Implements ossimImageHandlerFactoryBase.

Definition at line 273 of file ossimGdalFactory.cpp.

References ossimImageHandlerFactoryBase::UniqueList< T >::push_back(), and ossimString::split().

Referenced by getImageHandlersBySuffix().

{
   // ossimOgrGdalTileSource - shape file reader:
   extensionList.push_back( ossimString("shp") );
   
   int driverCount = GDALGetDriverCount();
   int idx = 0;
   
   for(idx = 0; idx < driverCount; ++idx)
   {
      GDALDriverH driver =  GDALGetDriver(idx);  
      
      if(driver)
      {
         const char* metaData = GDALGetMetadataItem(driver, GDAL_DMD_EXTENSION, 0);
         int nMetaData = metaData ? strlen(metaData) : 0;
         if(metaData && nMetaData>0 )
         {
            std::vector<ossimString> splitArray;
            ossimString(metaData).split(splitArray, " /");

            ossim_uint32 idxExtension = 0;

            for(idxExtension = 0; idxExtension < splitArray.size(); ++idxExtension)
            {
               extensionList.push_back(splitArray[idxExtension].downcase());
            }
         }
      }
   }

   if(GDALGetDriverByName("AAIGrid"))
   {
      extensionList.push_back("adf");
   }
}

getTypeNameList()

void ossimGdalFactory::getTypeNameList ( std::vector< ossimString > &  typeList ) const

virtual

This should return the type name of all objects in all factories. This is the name used to construct the objects dynamially and this name must be unique.

Implements ossimObjectFactory.

Definition at line 266 of file ossimGdalFactory.cpp.

References STATIC_TYPE_NAME.

{
   typeList.push_back(STATIC_TYPE_NAME(ossimHdfReader));
   typeList.push_back(STATIC_TYPE_NAME(ossimGdalTileSource));
   typeList.push_back(STATIC_TYPE_NAME(ossimOgrGdalTileSource));
}

instance()

ossimGdalFactory * ossimGdalFactory::instance ( )

static

Definition at line 38 of file ossimGdalFactory.cpp.

References ossimGdalFactory(), and theInstance.

Referenced by ossimSharedLibraryFinalize(), and ossimSharedLibraryInitialize().

{
   if(!theInstance)
   {
      theInstance = new ossimGdalFactory;
      CPLSetErrorHandler((CPLErrorHandler)CPLQuietErrorHandler);
      GDALAllRegister();
      OGRRegisterAll();
   }

   // lets turn off gdal error reporting
   //
//   GDALSetCacheMax(1024*1024*20);
//   GDALSetCacheMax(0);

   return theInstance;
}

open() [1/2]

ossimImageHandler * ossimGdalFactory::open ( const ossimFilename &  fileName, bool  openOverview = true  ) const

virtual

open that takes a filename.

Parameters

fileName	File to open.
trySuffixFirst	If true calls code to try to open by suffix first, then goes through the list of available handlers. default=true.
openOverview	If true image handler will attempt to open overview. default = true

Returns

Pointer to image handler or null if cannot open.

Implements ossimImageHandlerFactoryBase.

Definition at line 56 of file ossimGdalFactory.cpp.

References ossimString::downcase(), and ossimFilename::ext().

Referenced by createObject().

{
   // For GDAL we can't check for file exists since they support encoded opens for
   // subdatasets
   //
   
   if(fileName.ext().downcase() == "nui") return 0;
   if(traceDebug())
   {
      ossimNotify(ossimNotifyLevel_DEBUG)
         << "ossimGdalFactory::open(filename) DEBUG: entered..." << std::endl;
   }
   
   ossimRefPtr<ossimImageHandler> result;

   //try hdf reader first
   if (traceDebug())
   {
     ossimNotify(ossimNotifyLevel_DEBUG)
       << "ossimGdalFactory::open(filename) DEBUG:"
       << "\ntrying ossimHdfReader"
       << std::endl;
   }
   result = new ossimHdfReader;
   result->setOpenOverviewFlag(openOverview);
   if(result->open(fileName))
   {
     return result.release();
   }

   if (traceDebug())
   {
      ossimNotify(ossimNotifyLevel_DEBUG)
         << "ossimGdalFactory::open(filename) DEBUG:"
         << "\ntrying ossimGdalTileSource"
         << std::endl;
   }

   result = new ossimGdalTileSource;
   result->setOpenOverviewFlag(openOverview);   
   if(result->open(fileName))
   {
      return result.release();
   }

   if (traceDebug())
   {
      ossimNotify(ossimNotifyLevel_DEBUG)
         << "ossimGdalFactory::open(filename) DEBUG:"
         << "\ntrying ossimOgrVectorTileSource\n";
   }

   // No need to set overview flag.
   result = new ossimOgrVectorTileSource;
   if(result->open(fileName))
   {
     return result.release();
   }
   
   // we will have vector datasets only open if file exists.
   if(!fileName.exists() || 
       fileName.before(":", 3).upcase() == "SDE" || 
       fileName.before(":", 4).upcase() == "GLTP" || 
       fileName.ext().downcase() == "mdb")
   {
      result = 0;
      return result.release();
   }

   // No need to set overview flag.
   if (traceDebug())
   {
      ossimNotify(ossimNotifyLevel_DEBUG)
         << "ossimGdalFactory::open(filename) DEBUG:"
         << "\ntrying ossimOgrGdalTileSource\n";
   }
   
   result = new ossimOgrGdalTileSource;
   if(result->open(fileName))
   {
      return result.release();
   }
   result = 0;
   return result.release();
   if(traceDebug())
   {
      ossimNotify(ossimNotifyLevel_DEBUG)
         << "ossimGdalFactory::open(filename) DEBUG: leaving..."
         << std::endl;
   }
   
   return (ossimImageHandler*)NULL;
}

open() [2/2]

ossimImageHandler * ossimGdalFactory::open ( const ossimKeywordlist &  kwl, const char *  prefix = 0  ) const

virtual

Implements ossimImageHandlerFactoryBase.

Definition at line 151 of file ossimGdalFactory.cpp.

{
   ossimRefPtr<ossimImageHandler> result;
   
   if(traceDebug())
   {
      ossimNotify(ossimNotifyLevel_DEBUG) << "ossimGdalFactory::open(kwl, prefix) DEBUG: entered..." << std::endl;
   }
   if(traceDebug())
   {
     ossimNotify(ossimNotifyLevel_DEBUG) << "ossimGdalFactory::open(kwl, prefix) DEBUG: trying ossimHdfReader" << std::endl;
   }
   result = new ossimHdfReader;
   if(result->loadState(kwl, prefix))
   {
     return result.release();
   }
   result = 0;
   
   if(traceDebug())
   {
      ossimNotify(ossimNotifyLevel_DEBUG) << "ossimGdalFactory::open(kwl, prefix) DEBUG: trying ossimGdalTileSource" << std::endl;
   }
   result = new ossimGdalTileSource;
   if(result->loadState(kwl, prefix))
   {
      return result.release();
   }
   result = 0;
   if(traceDebug())
   {
      ossimNotify(ossimNotifyLevel_DEBUG) << "ossimGdalFactory::open(kwl, prefix) DEBUG: trying ossimOgrGdalTileSource" << std::endl;
   }
   
   result = new ossimOgrGdalTileSource;
   if(result->loadState(kwl, prefix))
   {
      return result.release();
   }
   result = 0;
   if(traceDebug())
   {
      ossimNotify(ossimNotifyLevel_DEBUG) << "ossimGdalFactory::open(kwl, prefix) DEBUG: leaving..." << std::endl;
   }
   
   return result.release();
}

openOverview()

ossimRefPtr< ossimImageHandler > ossimGdalFactory::openOverview ( const ossimFilename &  file ) const

virtual

Open overview that takes a file name.

Parameters

file	File to open.

Returns

ossimRefPtr to image handler on success or null on failure.

Reimplemented from ossimImageHandlerFactoryBase.

Definition at line 200 of file ossimGdalFactory.cpp.

References ossimImageHandler::open(), ossimImageHandler::setOpenOverviewFlag(), and ossimString::size().

{
   ossimRefPtr<ossimImageHandler> result = 0;
   if ( file.size() )
   {
      result = new ossimGdalTileSource;
      
      result->setOpenOverviewFlag( false ); // Always false.

      if ( result->open( file ) == false )
      {
         result = 0;
      }
   }
   return result;
}

operator=()

void ossimGdalFactory::operator= ( const ossimGdalFactory &  )

inlineprotected

Definition at line 76 of file ossimGdalFactory.h.

{}

Member Data Documentation

theInstance

ossimGdalFactory * ossimGdalFactory::theInstance = 0

staticprotected

Definition at line 78 of file ossimGdalFactory.h.

Referenced by instance(), and ~ossimGdalFactory().

---

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

• ossimGdalFactory.h
• ossimGdalFactory.cpp