KDbVariableExpressionData

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#include <KDbExpressionData.h>

Inheritance diagram for KDbVariableExpressionData:

Public Member Functions

 KDbVariableExpressionData (const QString &aName)
 
KDbVariableExpressionDataclone () override
 
void getQueryParameters (QList< KDbQuerySchemaParameter > *params) override
 
- Public Member Functions inherited from KDbExpressionData
template<typename T >
T * convert ()
 
template<typename T >
const T * convertConst () const
 
QDebug debug (QDebug dbg, KDb::ExpressionCallStack *callStack) const
 
bool isDateTimeType () const
 
bool isFPNumericType () const
 
bool isIntegerType () const
 
bool isNumericType () const
 
bool isTextType () const
 
bool isValid () const
 
KDbEscapedString toString (const KDbDriver *driver, KDbQuerySchemaParameterValueListIterator *params=nullptr, KDb::ExpressionCallStack *callStack=nullptr) const
 
KDbField::Type type () const
 
KDbField::Type type (KDb::ExpressionCallStack *callStack) const
 
bool validate (KDbParseInfo *parseInfo)
 
bool validate (KDbParseInfo *parseInfo, KDb::ExpressionCallStack *callStack)
 
- Public Member Functions inherited from QSharedData
 QSharedData (const QSharedData &)
 

Public Attributes

KDbFieldfield
 
QString name
 
KDbTableSchematableForQueryAsterisk
 
int tablePositionForField
 
- Public Attributes inherited from KDbExpressionData
QList< ExplicitlySharedExpressionDataPointerchildren
 
KDb::ExpressionClass expressionClass
 
ExplicitlySharedExpressionDataPointer parent
 
KDbToken token
 

Protected Member Functions

void debugInternal (QDebug dbg, KDb::ExpressionCallStack *callStack) const override
 
KDbEscapedString toStringInternal (const KDbDriver *driver, KDbQuerySchemaParameterValueListIterator *params, KDb::ExpressionCallStack *callStack) const override
 
KDbField::Type typeInternal (KDb::ExpressionCallStack *callStack) const override
 
bool validateInternal (KDbParseInfo *parseInfo, KDb::ExpressionCallStack *callStack) override
 
- Protected Member Functions inherited from KDbExpressionData
bool addToCallStack (QDebug *dbg, KDb::ExpressionCallStack *callStack) const
 

Detailed Description

Internal data class used to implement implicitly shared class KDbVariableExpression.

Provides thread-safe reference counting.

Definition at line 268 of file KDbExpressionData.h.

Constructor & Destructor Documentation

◆ KDbVariableExpressionData() [1/2]

KDbVariableExpressionData::KDbVariableExpressionData ( )

Definition at line 30 of file KDbVariableExpression.cpp.

◆ KDbVariableExpressionData() [2/2]

KDbVariableExpressionData::KDbVariableExpressionData ( const QString & aName)
explicit

Definition at line 39 of file KDbVariableExpression.cpp.

◆ ~KDbVariableExpressionData()

KDbVariableExpressionData::~KDbVariableExpressionData ( )
override

Definition at line 49 of file KDbVariableExpression.cpp.

Member Function Documentation

◆ clone()

KDbVariableExpressionData * KDbVariableExpressionData::clone ( )
overridevirtual

Reimplemented from KDbExpressionData.

Definition at line 54 of file KDbVariableExpression.cpp.

◆ debugInternal()

void KDbVariableExpressionData::debugInternal ( QDebug dbg,
KDb::ExpressionCallStack * callStack ) const
overrideprotectedvirtual

Sends information about this expression to debug output dbg (internal).

Reimplemented from KDbExpressionData.

Definition at line 60 of file KDbVariableExpression.cpp.

◆ getQueryParameters()

void KDbVariableExpressionData::getQueryParameters ( QList< KDbQuerySchemaParameter > * params)
overridevirtual

Reimplemented from KDbExpressionData.

Definition at line 79 of file KDbVariableExpression.cpp.

◆ toStringInternal()

KDbEscapedString KDbVariableExpressionData::toStringInternal ( const KDbDriver * driver,
KDbQuerySchemaParameterValueListIterator * params,
KDb::ExpressionCallStack * callStack ) const
overrideprotectedvirtual

Reimplemented from KDbExpressionData.

Definition at line 68 of file KDbVariableExpression.cpp.

◆ typeInternal()

KDbField::Type KDbVariableExpressionData::typeInternal ( KDb::ExpressionCallStack * callStack) const
overrideprotectedvirtual

We're assuming it's called after VariableExpr::validate()

Reimplemented from KDbExpressionData.

Definition at line 85 of file KDbVariableExpression.cpp.

◆ validateInternal()

bool KDbVariableExpressionData::validateInternal ( KDbParseInfo * parseInfo,
KDb::ExpressionCallStack * callStack )
overrideprotectedvirtual

Validation. Sets field, tablePositionForField and tableForQueryAsterisk members. See addColumn() in parse.y to see how it's used on column adding.

Todo
shall we also support db name?

Reimplemented from KDbExpressionData.

Definition at line 102 of file KDbVariableExpression.cpp.

Member Data Documentation

◆ field

KDbField* KDbVariableExpressionData::field

0 by default. After successful validate() it will point to a field, if the variable is of a form "tablename.fieldname" or "fieldname", otherwise (eg. for asterisks) still 0. Only meaningful for column expressions within a query.

Definition at line 283 of file KDbExpressionData.h.

◆ name

QString KDbVariableExpressionData::name

Verbatim name as returned by scanner.

Definition at line 277 of file KDbExpressionData.h.

◆ tableForQueryAsterisk

KDbTableSchema* KDbVariableExpressionData::tableForQueryAsterisk

0 by default. After successful validate() it will point to a table that is referenced by asterisk, i.e. "*.tablename". This is set to nullptr if this variable is not an asterisk of that form.

Definition at line 296 of file KDbExpressionData.h.

◆ tablePositionForField

int KDbVariableExpressionData::tablePositionForField

-1 by default. After successful validate() it will contain a position of a table within query that needs to be bound to the field. This value can be either be -1 if no binding is needed. This value is used in the Parser to call KDbQuerySchema::addField(KDbField* field, int bindToTable); Only meaningful for column expressions within a query.

Definition at line 291 of file KDbExpressionData.h.


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