BESTransmitter class named "json" that transmits an OPeNDAP data object as a JSON file. More...

#include <FoInstanceJsonTransmitter.h>

Inheritance diagram for FoInstanceJsonTransmitter:

Collaboration diagram for FoInstanceJsonTransmitter:

Public Member Functions
virtual bool	add_method (string method_name, p_transmitter trans_method)

virtual void	dump (ostream &strm) const
	dumps information about this object More...

virtual p_transmitter	find_method (string method_name)

	FoInstanceJsonTransmitter ()
	Construct the FoJsonTransmitter. More...

virtual bool	remove_method (string method_name)

virtual void	send_html (BESInfo &info, BESDataHandlerInterface &dhi)

virtual void	send_response (const string &method, BESResponseObject *obj, BESDataHandlerInterface &dhi)

virtual void	send_text (BESInfo &info, BESDataHandlerInterface &dhi)

virtual	~FoInstanceJsonTransmitter ()

Static Public Member Functions
static void	send_data (BESResponseObject *obj, BESDataHandlerInterface &dhi)
	The static method registered to transmit OPeNDAP data objects as a JSON file. More...

static void	send_metadata (BESResponseObject *obj, BESDataHandlerInterface &dhi)
	The static method registered to transmit OPeNDAP data objects as a JSON file. More...

Detailed Description

BESTransmitter class named "json" that transmits an OPeNDAP data object as a JSON file.

The FoJsonTransmitter transforms an OPeNDAP DataDDS object into a JSON file and streams the new (temporary) JSON file back to the client.

See also: BESBasicTransmitter

Definition at line 50 of file FoInstanceJsonTransmitter.h.

Constructor & Destructor Documentation

FoInstanceJsonTransmitter::FoInstanceJsonTransmitter ( )

Construct the FoJsonTransmitter.

The transmitter is created to add the ability to return OPeNDAP data objects (DataDDS) as instance object representation JSON documents.

The OPeNDAP data object is written to a JSON file locally in a temporary directory specified by the BES configuration parameter FoJson.Tempdir. If this variable is not found or is not set then it defaults to the macro definition FO_JSON_TEMP_DIR.

Definition at line 80 of file FoInstanceJsonTransmitter.cc.

References BESTransmitter::add_method(), DATA_SERVICE, DDX_SERVICE, FO_JSON_TEMP_DIR, BESKeys::get_value(), send_data(), send_metadata(), and TheBESKeys::TheKeys().

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virtual FoInstanceJsonTransmitter::~FoInstanceJsonTransmitter ( )

inlinevirtual

Definition at line 58 of file FoInstanceJsonTransmitter.h.

Member Function Documentation

bool BESTransmitter::add_method	(	string	method_name,
		p_transmitter	trans_method
	)

virtualinherited

Definition at line 36 of file BESTransmitter.cc.

Referenced by BESAsciiTransmit::BESAsciiTransmit(), BESDapTransmit::BESDapTransmit(), FoDapJsonTransmitter::FoDapJsonTransmitter(), FoInstanceJsonTransmitter(), FONcTransmitter::FONcTransmitter(), GeoTiffTransmitter::GeoTiffTransmitter(), BESXDModule::initialize(), BESWWWModule::initialize(), BESUsageModule::initialize(), JPEG2000Transmitter::JPEG2000Transmitter(), and W10nJsonTransmitter::W10nJsonTransmitter().

void BESBasicTransmitter::dump ( ostream & strm ) const

virtualinherited

dumps information about this object

Displays the pointer value of this instance

Parameters

strm	C++ i/o stream to dump the information to

Reimplemented from BESTransmitter.

Reimplemented in BESBasicHttpTransmitter.

Definition at line 72 of file BESBasicTransmitter.cc.

References BESTransmitter::dump(), BESIndent::Indent(), BESIndent::LMarg(), and BESIndent::UnIndent().

Referenced by BESBasicHttpTransmitter::dump().

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p_transmitter BESTransmitter::find_method ( string method_name )

virtualinherited

Definition at line 58 of file BESTransmitter.cc.

Referenced by BESTransmitter::send_response().

bool BESTransmitter::remove_method ( string method_name )

virtualinherited

Definition at line 47 of file BESTransmitter.cc.

Referenced by BESXDModule::terminate(), BESUsageModule::terminate(), BESWWWModule::terminate(), and BESDapTransmit::~BESDapTransmit().

void FoInstanceJsonTransmitter::send_data	(	BESResponseObject *	obj,
		BESDataHandlerInterface &	dhi
	)

static

The static method registered to transmit OPeNDAP data objects as a JSON file.

This function takes the OPeNDAP DataDDS object, reads in the data (can be used with any data handler), transforms the data into a JSON file, and streams back that JSON file back to the requester using the stream specified in the BESDataHandlerInterface.

Parameters

obj	The BESResponseObject containing the OPeNDAP DataDDS object
dhi	BESDataHandlerInterface containing information about the request and response

Exceptions

BESInternalError if the response is not an OPeNDAP DataDDS or if there are any problems reading the data, writing to a JSON file, or streaming the JSON file

Definition at line 211 of file FoInstanceJsonTransmitter.cc.

References BESDEBUG, BESDataHandlerInterface::data, BESDataDDSResponse::get_ce(), BESDataDDSResponse::get_dds(), BESDataHandlerInterface::get_output_stream(), POST_CONSTRAINT, and BESDataDDSResponse::set_dds().

Referenced by FoInstanceJsonTransmitter().

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void BESBasicTransmitter::send_html	(	BESInfo &	info,
		BESDataHandlerInterface &	dhi
	)

virtualinherited

Implements BESTransmitter.

Reimplemented in BESBasicHttpTransmitter.

Definition at line 53 of file BESBasicTransmitter.cc.

References BESContextManager::get_context(), BESDataHandlerInterface::get_output_stream(), BESInfo::is_buffered(), BESInfo::print(), BESUtil::set_mime_html(), and BESContextManager::TheManager().

Referenced by BESBasicHttpTransmitter::send_html().

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void FoInstanceJsonTransmitter::send_metadata	(	BESResponseObject *	obj,
		BESDataHandlerInterface &	dhi
	)

static

The static method registered to transmit OPeNDAP data objects as a JSON file.

This function takes the OPeNDAP DDS object, reads in the metadata (can be used with any data handler), transforms the metadata into a JSON file, and streams back that JSON file back to the requester using the stream specified in the BESDataHandlerInterface.

Note: This static method differs from the send_data() method in that it expects the BESResponseObject to be a DDS and not a DataDDS. This distinction is somewhat bogus as of libdap 3.13, but the two different classes do exist.

Parameters

obj	The BESResponseObject containing the OPeNDAP DataDDS object
dhi	BESDataHandlerInterface containing information about the request and response

Exceptions

BESInternalError if the response is not an OPeNDAP DataDDS or if there are any problems reading the data, writing to a JSON file, or streaming the JSON file

Definition at line 120 of file FoInstanceJsonTransmitter.cc.

References BESDEBUG, BESDataHandlerInterface::data, BESDDSResponse::get_ce(), BESDDSResponse::get_dds(), BESDataHandlerInterface::get_output_stream(), POST_CONSTRAINT, and BESDDSResponse::set_dds().

Referenced by FoInstanceJsonTransmitter().

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