KDbNArgExpression Class Reference

#include <KDbExpression.h>

Inheritance diagram for KDbNArgExpression:

Public Member Functions
	KDbNArgExpression ()
	KDbNArgExpression (const KDbNArgExpression &expr)
	KDbNArgExpression (KDb::ExpressionClass aClass, KDbToken token)
	~KDbNArgExpression () override
void	append (const KDbExpression &expr)
KDbExpression	arg (int i) const
int	argCount () const
bool	containsInvalidArgument () const
bool	containsNullArgument () const
int	indexOf (const KDbExpression &expr, int from=0) const
void	insert (int i, const KDbExpression &expr)
bool	isEmpty () const
int	lastIndexOf (const KDbExpression &expr, int from=-1) const
void	prepend (const KDbExpression &expr)
bool	remove (const KDbExpression &expr)
void	removeAt (int i)
void	replace (int i, const KDbExpression &expr)
KDbExpression	takeAt (int i)
Public Member Functions inherited from KDbExpression
	KDbExpression ()
KDbExpression	clone () const
QDebug	debug (QDebug dbg, KDb::ExpressionCallStack *callStack) const
KDb::ExpressionClass	expressionClass () const
void	getQueryParameters (QList< KDbQuerySchemaParameter > *params)
bool	isBinary () const
bool	isConst () const
bool	isDateTimeType () const
bool	isFPNumericType () const
bool	isFunction () const
bool	isIntegerType () const
bool	isNArg () const
bool	isNull () const
bool	isNumericType () const
bool	isQueryParameter () const
bool	isTextType () const
bool	isUnary () const
bool	isValid () const
bool	isVariable () const
bool	operator!= (const KDbExpression &e) const
bool	operator== (const KDbExpression &e) const
KDbExpression	parent () const
void	setExpressionClass (KDb::ExpressionClass aClass)
void	setToken (KDbToken token)
KDbBinaryExpression	toBinary () const
KDbConstExpression	toConst () const
KDbFunctionExpression	toFunction () const
KDbToken	token () const
KDbNArgExpression	toNArg () const
KDbQueryParameterExpression	toQueryParameter () const
KDbEscapedString	toString (const KDbDriver *driver, KDbQuerySchemaParameterValueListIterator *params=nullptr, KDb::ExpressionCallStack *callStack=nullptr) const
KDbUnaryExpression	toUnary () const
KDbVariableExpression	toVariable () const
KDbField::Type	type () const
bool	validate (KDbParseInfo *parseInfo)

Protected Member Functions
	KDbNArgExpression (const ExplicitlySharedExpressionDataPointer &ptr)
	KDbNArgExpression (KDbExpressionData *data)
Protected Member Functions inherited from KDbExpression
	KDbExpression (const ExplicitlySharedExpressionDataPointer &ptr)
	KDbExpression (KDbExpressionData *data)
	KDbExpression (KDbExpressionData *data, KDb::ExpressionClass aClass, KDbToken token)
void	appendChild (const ExplicitlySharedExpressionDataPointer &child)
void	appendChild (const KDbExpression &child)
bool	checkBeforeInsert (const ExplicitlySharedExpressionDataPointer &child)
QList< ExplicitlySharedExpressionDataPointer >	children () const
int	indexOfChild (const KDbExpression &child, int from=0) const
void	insertChild (int i, const KDbExpression &child)
void	insertEmptyChild (int i)
int	lastIndexOfChild (const KDbExpression &child, int from=-1) const
void	prependChild (const KDbExpression &child)
bool	removeChild (const KDbExpression &child)
void	removeChild (int i)
void	setLeftOrRight (const KDbExpression &right, int index)
KDbExpression	takeChild (int i)

Additional Inherited Members
Static Public Member Functions inherited from KDbExpression
static KDb::ExpressionClass	classForToken (KDbToken token)
Protected Attributes inherited from KDbExpression
ExplicitlySharedExpressionDataPointer	d

Detailed Description

The KDbNArgExpression class represents a base class N-argument expression.

Definition at line 212 of file KDbExpression.h.

Constructor & Destructor Documentation

KDbNArgExpression() [1/3]

KDbNArgExpression::KDbNArgExpression

(

)

Constructs a null N-argument expression.

See also

KDbExpression::isNull()

Definition at line 181 of file KDbNArgExpression.cpp.

KDbNArgExpression() [2/3]

KDbNArgExpression::KDbNArgExpression	(	KDb::ExpressionClass	aClass,
		KDbToken	token
	)

Constructs an N-argument expression of class aClass and token token.

Definition at line 193 of file KDbNArgExpression.cpp.

KDbNArgExpression() [3/3]

KDbNArgExpression::KDbNArgExpression

(

const KDbNArgExpression &

expr

)

Constructs a copy of other N-argument expression expr. Resulting object is not a deep copy but rather a reference to the object expr.

Definition at line 199 of file KDbNArgExpression.cpp.

~KDbNArgExpression()

KDbNArgExpression::~KDbNArgExpression ( )

override

Destroys the expression.

Definition at line 209 of file KDbNArgExpression.cpp.

Member Function Documentation

append()

void KDbNArgExpression::append

(

const KDbExpression &

expr

)

Inserts expression argument expr at the end of this expression.

Definition at line 213 of file KDbNArgExpression.cpp.

arg()

KDbExpression KDbNArgExpression::arg

(

int

i

)

const

Returns

expression index i in the list of arguments. If the index i is out of bounds, the function returns null expression.

Definition at line 223 of file KDbNArgExpression.cpp.

argCount()

int KDbNArgExpression::argCount

(

)

const

Returns

the number of expression arguments in this expression.

Definition at line 269 of file KDbNArgExpression.cpp.

containsInvalidArgument()

bool KDbNArgExpression::containsInvalidArgument

(

)

const

Returns

true if any argument is invalid (!KDbExpression::isValid()).

Definition at line 279 of file KDbNArgExpression.cpp.

containsNullArgument()

bool KDbNArgExpression::containsNullArgument

(

)

const

Returns

true if any argument is NULL (type KDbField::Null).

Definition at line 284 of file KDbNArgExpression.cpp.

indexOf()

int KDbNArgExpression::indexOf	(	const KDbExpression &	expr,
		int	from = 0
	)		const

Returns

the index position of the first occurrence of expression argument expr in this expression, searching forward from index position from.

-1 if no argument matched.

See also

lastIndexOf()

Definition at line 259 of file KDbNArgExpression.cpp.

insert()

void KDbNArgExpression::insert	(	int	i,
		const KDbExpression &	expr
	)

Inserts expression argument expr at index position i in this expression. If i is 0, the expression is prepended to the list of arguments. If i is argCount(), the value is appended to the list of arguments. i must be a valid index position in the list (i.e., 0 <= i < argCount()).

Definition at line 228 of file KDbNArgExpression.cpp.

isEmpty()

bool KDbNArgExpression::isEmpty

(

)

const

Returns

true if the expression contains no arguments; otherwise returns false.

Definition at line 274 of file KDbNArgExpression.cpp.

lastIndexOf()

int KDbNArgExpression::lastIndexOf	(	const KDbExpression &	expr,
		int	from = -1
	)		const

Returns

the index position of the last occurrence of expression argument expr in this expression, searching backward from index position from. If from is -1 (the default), the search starts at the last item. Returns -1 if no argument matched.

See also

indexOf()

Definition at line 264 of file KDbNArgExpression.cpp.

prepend()

void KDbNArgExpression::prepend

(

const KDbExpression &

expr

)

Inserts expression argument expr at the beginning of this expression.

Definition at line 218 of file KDbNArgExpression.cpp.

remove()

bool KDbNArgExpression::remove

(

const KDbExpression &

expr

)

Removes the expression argument expr and returns true on success; otherwise returns false.

Definition at line 244 of file KDbNArgExpression.cpp.

removeAt()

void KDbNArgExpression::removeAt

(

int

i

)

Removes the expression at index position i. i must be a valid index position in the list (i.e., 0 <= i < argCount()).

Definition at line 249 of file KDbNArgExpression.cpp.

replace()

void KDbNArgExpression::replace	(	int	i,
		const KDbExpression &	expr
	)

Replaces expression argument at index i with expression expr.

i must be a valid index position in the list (i.e., 0 <= i < argCount()). *‍/

Definition at line 233 of file KDbNArgExpression.cpp.

takeAt()

KDbExpression KDbNArgExpression::takeAt

(

int

i

)

Removes the expression at index position i and returns it. i must be a valid index position in the list (i.e., 0 <= i < argCount()). If you don't use the return value, removeAt() is more efficient.

Definition at line 254 of file KDbNArgExpression.cpp.

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

• KDbExpression.h
• KDbNArgExpression.cpp