Accessor to the data with type Type::Record. More...

#include <accessors.hh>

Collaboration diagram for Input::Record:

Public Types
typedef ::Input::Type::Record	InputType

Public Member Functions
	Record ()

	Record (const Record &rec)

	Record (const Address &address, const Type::Record type)

template<class Ret >
const Ret	val (const string &key) const

template<class Ret >
const Ret	val (const string &key, const Ret default_val) const

template<class Ret >
Iterator< Ret >	find (const string &key) const

template<class Ret >
bool	opt_val (const string &key, Ret &value) const

bool	is_empty () const

EI_Address	ei_address () const

string	address_string () const

string	record_type_name ()

Protected Member Functions
void	set_address (const Address &address)

Protected Attributes
Input::Type::Record	record_type_
	Corresponding Type::Record object. More...

Address	address_
	Contains address and relationships with record ancestor. More...

Friends
class	JSONToStorage

class	AbstractRecord

Detailed Description

Accessor to the data with type Type::Record.

This class provides access to the data through names – key of the data fields. It merge information from a Type::Record object, which describes valid keys and their types, and reference into a StorageBase that provides access to actual values.

The keys that are obligatory or has specified default value can be read either by the method template val<OutputType> which returns the value of type OutputType that should be compatible with declared type (i.e. you can get unsigned int from an input value of type Type:Integer, but not from an input value of type Type::String).

The keys which are optional and has no default value you has to use the method template find<OutputType> that returns an iterator to the type OutputType, which is invalid if the value is missing on the input and no the default string is provided.

Usage:

using namespace Input;
Record record = some_other_record.val<Record>("output_format");
// reading an obligatory key or key with default value
int n_digis = record.val<int>("number_of_substances");
// reading an optional key
Iterator<Array> it = record.find<Array>("substances_names");
if ( it ) {
    it->copy_to( list_of_names );
} else {
    // generic names of substances
}

Definition at line 327 of file accessors.hh.

Member Typedef Documentation

typedef ::Input::Type::Record Input::Record::InputType

Definition at line 330 of file accessors.hh.

Constructor & Destructor Documentation

Input::Record::Record ( )

Default constructor.

Constructor uses empty Address which causes error in program, Address has to be filled.

Definition at line 167 of file accessors.cc.

Input::Record::Record ( const Record & rec )

Copy constructor.

Definition at line 173 of file accessors.cc.

Input::Record::Record	(	const Address &	address,
		const Type::Record	type
	)

Constructs the accessor providing pointer store to storage node with list of data of the record and type specification of the record given by parameter type.

Definition at line 179 of file accessors.cc.

Member Function Documentation

string Input::Record::address_string ( ) const

Get address as string.

Definition at line 193 of file accessors.cc.

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Input::EI_Address Input::Record::ei_address ( ) const

Returns address error info.

Definition at line 187 of file accessors.cc.

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template<class Ret >

Iterator< Ret > Input::Record::find ( const string & key ) const

inline

Returns iterator to the key if it exists or NULL Iterator if it doesn't. This method must be used for keys which are optional or has default value provided at read time.

Definition at line 83 of file accessors_impl.hh.

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bool Input::Record::is_empty ( ) const

inline

Returns true if the accessor is empty (after default constructor). TODO: have something similar for other accessors.

Definition at line 401 of file accessors.hh.

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template<class Ret >

bool Input::Record::opt_val	(	const string &	key,
		Ret &	value
	)		const

inline

This has similar function as the previous method, but simpler usage in some cases. You has to provide reference to the variable value where the value of an optional key should be placed. If the key in not present in the input the value of value is not changed and the method returns false. If the key has a value the method returns true. Typical usage:

double param;
string other_param;
if (rec.opt_val("optional_param", param) ) {
     use_param(param);
} else if (rec.opt_val("other_param", other_param) ) {
     use_other_param(other_param);
} else {
     ... error, no value for param
}

Definition at line 99 of file accessors_impl.hh.

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string Input::Record::record_type_name ( )

Get name of record_type_

Definition at line 198 of file accessors.cc.

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void Input::Record::set_address ( const Address & address )

protected

Set address (currently necessary for creating root accessor)

template<class Ret >

const Ret Input::Record::val ( const string & key ) const

inline

Returns value of given key if the declared key type (descendant of Input:Type:TypeBase) is convertible to the C++ class type given as the template parameter. If the key has no defined value (either from input or a declared default value) it throws an exception. It throws also, if the declared type do not match desired C++ type.

This method can be used only for keys which are obligatory or has default value given at declaration. The optional keys must use method find. Keys with default value at read time must use the overloaded variant of method val or the method find

Definition at line 20 of file accessors_impl.hh.

template<class Ret >

const Ret Input::Record::val	(	const string &	key,
		const Ret	default_val
	)		const

inline

Same as the previous, but you can specify default value default_val that is used if the key is not specified at the input. This method can be used only for keys declared with Default::reat_time().

Definition at line 50 of file accessors_impl.hh.

Friends And Related Function Documentation

friend class AbstractRecord

friend

Definition at line 430 of file accessors.hh.

friend class JSONToStorage

friend

Definition at line 426 of file accessors.hh.

Member Data Documentation

Address Input::Record::address_

protected

Contains address and relationships with record ancestor.

Definition at line 433 of file accessors.hh.

Input::Type::Record Input::Record::record_type_

protected

Corresponding Type::Record object.

Definition at line 429 of file accessors.hh.

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

/home/cygwin64/F123-windows-release/flow123d/src/input/accessors.hh
/home/cygwin64/F123-windows-release/flow123d/src/input/accessors.cc
/home/cygwin64/F123-windows-release/flow123d/src/input/accessors_impl.hh

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation