KDbNArgExpression

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KDbNArgExpression Class Reference

#include <KDbExpression.h>

Inheritance diagram for KDbNArgExpression:
Inheritance graph
[legend]

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() [1/5]

KDbNArgExpression::KDbNArgExpression ( )

Constructs a null N-argument expression.

See also
KDbExpression::isNull()

Definition at line 181 of file KDbNArgExpression.cpp.

◆ KDbNArgExpression() [2/5]

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() [3/5]

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.

◆ KDbNArgExpression() [4/5]

KDbNArgExpression::KDbNArgExpression ( KDbExpressionData * data)
explicitprotected

Definition at line 187 of file KDbNArgExpression.cpp.

◆ KDbNArgExpression() [5/5]

KDbNArgExpression::KDbNArgExpression ( const ExplicitlySharedExpressionDataPointer & ptr)
explicitprotected

Definition at line 204 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 (!KDbExpressionisValid()).

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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