TTableContext Class Reference

Execution context. More...

#include <table.h>

Collaboration diagram for TTableContext:

Public Member Functions
	TTableContext ()
	Default constructor. More...
	TTableContext (TSIn &SIn)
	Loads TTableContext in binary from SIn. More...
void	Load (TSIn &SIn)
	Loads TTableContext in binary from SIn. More...
void	LoadShM (TShMIn &ShMIn)
	Loads TTableContext using shared memory, the object is read only. More...
void	Save (TSOut &SOut)
	Saves TTableContext in binary to SOut. More...
TInt	AddStr (const TStr &Key)
	Adds string Key to the context, returns its KeyId. More...
TStr	GetStr (const TInt &KeyId) const
	Returns a string with KeyId. More...

Protected Attributes
TStrHash< TInt, TBigStrPool >	StringVals
	StringPool - stores string data values and maps them to integers. More...

Friends
class	TTable

Detailed Description

Execution context.

Definition at line 180 of file table.h.

Constructor & Destructor Documentation

TTableContext::TTableContext ( )

inline

Default constructor.

Definition at line 187 of file table.h.

{}

TTableContext::TTableContext ( TSIn &  SIn )

inline

Loads TTableContext in binary from SIn.

Definition at line 189 of file table.h.

: StringVals(SIn) {}

Member Function Documentation

TInt TTableContext::AddStr ( const TStr &  Key )

inline

Adds string Key to the context, returns its KeyId.

Definition at line 199 of file table.h.

References TStrHash< TDat, TStringPool, THashFunc >::AddKey().

                               {
    TInt KeyId = TInt(StringVals.AddKey(Key));
    return(KeyId);
  }

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TStr TTableContext::GetStr ( const TInt &  KeyId ) const

inline

Returns a string with KeyId.

Definition at line 204 of file table.h.

References TStrHash< TDat, TStringPool, THashFunc >::GetKey().

                                       {
    return StringVals.GetKey(KeyId);
  }

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void TTableContext::Load ( TSIn &  SIn )

inline

Loads TTableContext in binary from SIn.

Definition at line 191 of file table.h.

References TStrHash< TDat, TStringPool, THashFunc >::Load().

{ StringVals.Load(SIn); }

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void TTableContext::LoadShM ( TShMIn &  ShMIn )

inline

Loads TTableContext using shared memory, the object is read only.

Definition at line 193 of file table.h.

References TStrHash< TDat, TStringPool, THashFunc >::LoadShM().

                              {
    StringVals.LoadShM(ShMIn, true);
  }

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void TTableContext::Save ( TSOut &  SOut )

inline

Saves TTableContext in binary to SOut.

Definition at line 197 of file table.h.

References TStrHash< TDat, TStringPool, THashFunc >::Save().

{ StringVals.Save(SOut); }

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Friends And Related Function Documentation

friend class TTable

friend

Definition at line 183 of file table.h.

Member Data Documentation

TStrHash<TInt, TBigStrPool> TTableContext::StringVals

protected

StringPool - stores string data values and maps them to integers.

Definition at line 182 of file table.h.

Referenced by TTable::AddStrVal(), TTable::BuildGraph(), TTable::ChangeContext(), TTable::ColConcat(), TTable::ColConcatConst(), TTable::GetContextKey(), TTable::GetContextMemUsedKB(), TTable::GetStr(), TTable::GetStrValIdx(), TTable::PrintContextSize(), and TTable::StoreStrCol().

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

• snap-core/table.h