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FieldCommon Class Referenceabstract

Common abstract parent of all Field<...> classes. More...

#include <field_common.hh>

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Classes

struct  SharedData
 

Public Member Functions

 TYPEDEF_ERR_INFO (EI_Time, double)
 
 TYPEDEF_ERR_INFO (EI_Field, std::string)
 
 DECLARE_INPUT_EXCEPTION (ExcNonascendingTime,<< "Non-ascending time: "<< EI_Time::val<< " for field "<< EI_Field::qval<< ".\n")
 
 DECLARE_INPUT_EXCEPTION (ExcMissingDomain,<< "Missing domain specification (region, r_id, or r_set) in the field descriptor:")
 
 DECLARE_EXCEPTION (ExcFieldMeshDifference,<< "Two copies of the field "<< EI_Field::qval<< "call set_mesh with different arguments.\n")
 
FieldCommonname (const string &name)
 
FieldCommondescription (const string &description)
 
FieldCommoninput_default (const string &input_default)
 
FieldCommonunits (const UnitSI &units)
 Set basic units of the field. More...
 
FieldCommoninput_selection (const Input::Type::Selection *element_selection)
 
FieldCommonoutput_type (OutputTime::DiscreteSpace rt)
 
FieldCommonflags (FieldFlag::Flags::Mask mask)
 
FieldCommonflags_add (FieldFlag::Flags::Mask mask)
 
void set_components (const std::vector< string > &names)
 
virtual void set_mesh (const Mesh &mesh)
 
void set_input_list (const Input::Array &list)
 
void set_limit_side (LimitSide side)
 
const std::string & input_name () const
 
const std::string & name () const
 
const std::string description () const
 
const std::string & input_default () const
 
const UnitSIunits () const
 
OutputTime::DiscreteSpace output_type () const
 
bool is_bc () const
 
unsigned int n_comp () const
 
const Meshmesh () const
 
LimitSide limit_side () const
 
FieldFlag::Flagsflags ()
 
double time () const
 
virtual IT::AbstractRecordget_input_type ()=0
 
virtual IT::Recordget_multifield_input_type ()=0
 
void mark_input_times (TimeMark::Type mark_type)
 
virtual bool set_time (const TimeStep &time)=0
 
virtual void copy_from (const FieldCommon &other)=0
 
virtual void output (OutputTime *stream)=0
 
virtual bool is_constant (Region reg)=0
 
bool changed () const
 
void set_component_index (unsigned int idx)
 
bool is_multifield () const
 
virtual ~FieldCommon ()
 

Static Public Member Functions

static IT::Record field_descriptor_record (const string &record_name)
 

Protected Types

enum  TimeStatus { TimeStatus::changed, TimeStatus::constant, TimeStatus::unknown }
 

Protected Member Functions

 FieldCommon ()
 
 FieldCommon (const FieldCommon &other)
 
void set_history_changed ()
 

Protected Attributes

std::string name_
 
std::shared_ptr< SharedDatashared_
 
LimitSide limit_side_
 
TimeStatus set_time_result_
 Status of history. More...
 
double last_time_ = -numeric_limits<double>::infinity()
 
OutputTime::DiscreteSpace type_of_output_data_ = OutputTime::ELEM_DATA
 
unsigned int component_index_
 
bool multifield_
 
FieldFlag::Flags flags_ = FieldFlag::declare_input & FieldFlag::equation_input & FieldFlag::allow_output
 Field flags. Default setting is "an equation input field, that can read from user input, and can be written to output". More...
 

Static Protected Attributes

static const unsigned int history_length_limit_ =3
 

Friends

std::ostream & operator<< (std::ostream &stream, const FieldCommon &field)
 

Detailed Description

Common abstract parent of all Field<...> classes.

We need common ancestor in order to keep a list of all fields in one EqData object and allow collective operations like set_time or init_from_input.

Definition at line 47 of file field_common.hh.

Member Enumeration Documentation

enum FieldCommon::TimeStatus
strongprotected

Result of last set time method

Enumerator
changed 
constant 
unknown 

Definition at line 448 of file field_common.hh.

Constructor & Destructor Documentation

FieldCommon::~FieldCommon ( )
virtual

Virtual destructor.

Definition at line 119 of file field_common.cc.

FieldCommon::FieldCommon ( )
protected

Private default constructor. Should be used only through Field<...>

Definition at line 8 of file field_common.cc.

FieldCommon::FieldCommon ( const FieldCommon other)
protected

Private copy constructor. Should be used only through Field<...>

Definition at line 23 of file field_common.cc.

Member Function Documentation

bool FieldCommon::changed ( ) const
inline

Returns true if set_time_result_ is not TimeStatus::constant. Returns the same value as last set_time method.

Definition at line 296 of file field_common.hh.

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virtual void FieldCommon::copy_from ( const FieldCommon other)
pure virtual
FieldCommon::DECLARE_EXCEPTION ( ExcFieldMeshDifference  ,
<< "Two copies of the field "<< EI_Field::qval<< "call set_mesh with different arguments.\n"   
)
FieldCommon::DECLARE_INPUT_EXCEPTION ( ExcNonascendingTime  ,
<< "Non-ascending time: "<< EI_Time::val<< " for field "<< EI_Field::qval<< ".\n"   
)
FieldCommon::DECLARE_INPUT_EXCEPTION ( ExcMissingDomain  ,
<< "Missing domain specification (region, r_id, or r_set) in the field descriptor:"   
)
FieldCommon& FieldCommon::description ( const string &  description)
inline

Set description of the field, used for description of corresponding key in documentation.

Definition at line 80 of file field_common.hh.

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const std::string FieldCommon::description ( ) const
inline

Definition at line 189 of file field_common.hh.

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IT::Record FieldCommon::field_descriptor_record ( const string &  record_name)
static

Common part of the field descriptor. To get finished record one has to add keys for individual fields. This is done automatically using FieldSet::get_input_type().

Definition at line 34 of file field_common.cc.

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FieldCommon& FieldCommon::flags ( FieldFlag::Flags::Mask  mask)
inline

Set given mask to the field flags, ignoring default setting. Default setting is declare_input & equation_input & allow_output.

Definition at line 134 of file field_common.hh.

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FieldFlag::Flags& FieldCommon::flags ( )
inline

Definition at line 213 of file field_common.hh.

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FieldCommon& FieldCommon::flags_add ( FieldFlag::Flags::Mask  mask)
inline

Add given mask to the field flags.

Definition at line 140 of file field_common.hh.

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virtual IT::AbstractRecord& FieldCommon::get_input_type ( )
pure virtual
virtual IT::Record& FieldCommon::get_multifield_input_type ( )
pure virtual
FieldCommon& FieldCommon::input_default ( const string &  input_default)
inline

Set default value for the field's key from which the default constant valued field will be constructed.

During the first call of the set_time method, we check that the field is defined on all regions. On regions where it is not set yet, we use given dflt string to get particular instance of FieldBase<> (see check_initialized_region_fields_). The default string is interpreted in the same way as if it appears in the input file as the value of the field. In particular it can be whole record with TYPE of the field etc. Most common choice is however mere constant.

Definition at line 92 of file field_common.hh.

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const std::string& FieldCommon::input_default ( ) const
inline

Definition at line 192 of file field_common.hh.

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const std::string& FieldCommon::input_name ( ) const
inline

Getters.

Definition at line 183 of file field_common.hh.

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FieldCommon& FieldCommon::input_selection ( const Input::Type::Selection element_selection)
inline

For the fields returning "Enum", we have to pass the Input::Type::Selection object to the field implementations.

We must save raw pointer since selection may not be yet initialized (during static initialization phase).

Definition at line 114 of file field_common.hh.

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bool FieldCommon::is_bc ( ) const
inline

Definition at line 201 of file field_common.hh.

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virtual bool FieldCommon::is_constant ( Region  reg)
pure virtual

If the field on given region reg exists and is of type FieldConstant<...> the method method returns true otherwise it returns false. Then one call ElementAccessor<spacedim>(mesh(), reg ) to construct an ElementAccessor elm pointing to "virtual" element on which Field::value returns constant value.

Current implementation use virtual functions and can be prohibitively slow if called for every element. If this becomes necessary it is possible to incorporate such test into set_time method and in this method just return precomputed result.

Implemented in Field< spacedim, Value >, Field< spacedim, FieldValue< 3 >::EnumVector >, Field< 3, FieldValue< 3 >::Vector >, Field< spacedim, FieldValue< 3 >::Vector >, Field< 3, FieldValue< 3 >::Scalar >, Field< 3, FieldValue< 3 >::VectorFixed >, Field< spacedim, FieldValue< 3 >::Scalar >, Field< spacedim, FieldValue< 3 >::Enum >, Field< 3, FieldValue< 3 >::Integer >, Field< 3, FieldValue< 3 >::TensorFixed >, Field< spacedim, typename FieldValue< spacedim >::Vector >, Field< 3, FieldValue< 3 >::EnumVector >, MultiField< spacedim, Value >, and MultiField< 3, FieldValue< 3 >::Scalar >.

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bool FieldCommon::is_multifield ( ) const
inline

Return multifield_ flag. TODO: temporary solution

Definition at line 314 of file field_common.hh.

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LimitSide FieldCommon::limit_side ( ) const
inline

Definition at line 210 of file field_common.hh.

void FieldCommon::mark_input_times ( TimeMark::Type  mark_type)

Pass through the input array input_list_, collect all times where the field could change and put appropriate time marks into global TimeMarks object. Introduced time marks have both given mark_type and type_input() type.

Further development:

  • we have to distinguish "jump" times and "smooth" times

Definition at line 103 of file field_common.cc.

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const Mesh* FieldCommon::mesh ( ) const
inline

Definition at line 207 of file field_common.hh.

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unsigned int FieldCommon::n_comp ( ) const
inline

Definition at line 204 of file field_common.hh.

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FieldCommon& FieldCommon::name ( const string &  name)
inline

Set name of the field. In fact there are two attributes set by this method.

The first is name used to identify the field as part of a FieldSet or MultiField objects. This name is permanent and can be set only by this method. Can be accessed by name() method. This name is also used at output.

The second is input_name_ that determines appropriate key name in the input field descriptor. This name is also set by this method, but is stored in the internal shared space which is overwritten during call of copy_from method or assignment operator. Can be accessed by input_name() mathod.

Definition at line 73 of file field_common.hh.

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const std::string& FieldCommon::name ( ) const
inline

Definition at line 186 of file field_common.hh.

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virtual void FieldCommon::output ( OutputTime stream)
pure virtual
FieldCommon& FieldCommon::output_type ( OutputTime::DiscreteSpace  rt)
inline

Output discrete space used in the output() method. Can be different for different field copies. one can choose between: data constant on elements, linear data given in nodes, and discontinuous linear data.

If not set explicitly by this method, the default value is OutputTime::ELEM_DATA

Definition at line 127 of file field_common.hh.

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OutputTime::DiscreteSpace FieldCommon::output_type ( ) const
inline

Definition at line 198 of file field_common.hh.

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void FieldCommon::set_component_index ( unsigned int  idx)
inline

Sets component_index_

Definition at line 305 of file field_common.hh.

void FieldCommon::set_components ( const std::vector< string > &  names)
inline

Set vector of component names. Set number of components for run-time sized vectors. This is used latter when we construct objects derived from FieldBase<...>.

n_comp_ is constant zero for fixed values, this zero is set by Field<...> constructors

Definition at line 150 of file field_common.hh.

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void FieldCommon::set_history_changed ( )
inlineprotected

Invalidate last time in order to force set_time method update region_fields_.

Definition at line 342 of file field_common.hh.

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void FieldCommon::set_input_list ( const Input::Array list)

Set the data list from which field will read its input. It is list of "field descriptors". When reading from the input list we consider only field descriptors containing key of named by the field name. These field descriptors has to have times forming ascending sequence.

The list is used by set_time method to set field on individual regions to actual FieldBase descendants.

Definition at line 53 of file field_common.cc.

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void FieldCommon::set_limit_side ( LimitSide  side)
inline

Set side of limit when calling set_time with jump time, i.e. time where the field change implementation on some region. Wee assume that implementations prescribe only smooth fields. This method invalidate result of changed() so it should be called just before set_time. Can be different for different field copies.

Definition at line 177 of file field_common.hh.

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virtual void FieldCommon::set_mesh ( const Mesh mesh)
inlinevirtual
virtual bool FieldCommon::set_time ( const TimeStep time)
pure virtual

Abstract method to update field to the new time level. Implemented by in class template Field<...>.

Return true if the value of the field was changed on some region. The returned value is also stored in changed_during_set_time data member.

Default values helps when creating steady field. Note that default TimeGovernor constructor set time to 0.0.

Different field copies can be set to different times.

Implemented in Field< spacedim, Value >, Field< spacedim, FieldValue< 3 >::EnumVector >, Field< 3, FieldValue< 3 >::Vector >, Field< spacedim, FieldValue< 3 >::Vector >, Field< 3, FieldValue< 3 >::Scalar >, Field< 3, FieldValue< 3 >::VectorFixed >, Field< spacedim, FieldValue< 3 >::Scalar >, Field< spacedim, FieldValue< 3 >::Enum >, Field< 3, FieldValue< 3 >::Integer >, Field< 3, FieldValue< 3 >::TensorFixed >, Field< spacedim, typename FieldValue< spacedim >::Vector >, Field< 3, FieldValue< 3 >::EnumVector >, MultiField< spacedim, Value >, and MultiField< 3, FieldValue< 3 >::Scalar >.

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double FieldCommon::time ( ) const
inline

Returns time set by last call of set_time method. Can be different for different field copies.

Definition at line 220 of file field_common.hh.

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FieldCommon::TYPEDEF_ERR_INFO ( EI_Time  ,
double   
)
FieldCommon::TYPEDEF_ERR_INFO ( EI_Field  ,
std::string   
)
FieldCommon& FieldCommon::units ( const UnitSI units)
inline

Set basic units of the field.

Currently, we use it only during output and we represents units just by a string.

TODO: Particular class for representing and conversion of various units would be more appropriate. This can allow specification of the units on the inptu, automatic conversion and the same on the output. Possibly this allow using Boost::Units library, however, it seems to introduce lot of boilerplate code. But can increase correctness of the calculations.

Definition at line 105 of file field_common.hh.

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const UnitSI& FieldCommon::units ( ) const
inline

Definition at line 195 of file field_common.hh.

Friends And Related Function Documentation

std::ostream& operator<< ( std::ostream &  stream,
const FieldCommon field 
)
friend

Stream output operator

Definition at line 489 of file field_common.hh.

Member Data Documentation

unsigned int FieldCommon::component_index_
protected

Specify if the field is part of a MultiField and which component it is

Definition at line 470 of file field_common.hh.

Field flags. Default setting is "an equation input field, that can read from user input, and can be written to output".

Definition at line 484 of file field_common.hh.

const unsigned int FieldCommon::history_length_limit_ =3
staticprotected

Maximum number of FieldBase objects we store per one region.

Definition at line 481 of file field_common.hh.

double FieldCommon::last_time_ = -numeric_limits<double>::infinity()
protected

Last set time. Can be different for different field copies.

Definition at line 460 of file field_common.hh.

LimitSide FieldCommon::limit_side_
protected

Which value is returned for times where field is discontinuous.

Definition at line 443 of file field_common.hh.

bool FieldCommon::multifield_
protected

Flag determining if object is Multifield or Field. TODO: temporary solution, goal is to make these two classes to behave similarly

Definition at line 476 of file field_common.hh.

std::string FieldCommon::name_
protected

Name that identifies the field in the field_set. By default this is same as shared_->input_name_.

Definition at line 433 of file field_common.hh.

TimeStatus FieldCommon::set_time_result_
protected

Status of history.

Definition at line 455 of file field_common.hh.

std::shared_ptr<SharedData> FieldCommon::shared_
protected

Data shared among copies of the same input field.

Definition at line 438 of file field_common.hh.

OutputTime::DiscreteSpace FieldCommon::type_of_output_data_ = OutputTime::ELEM_DATA
protected

Output data type used in the output() method. Can be different for different field copies.

Definition at line 465 of file field_common.hh.


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