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#include <KDbExpression.h>

Inheritance diagram for KDbExpression:

Public Member Functions

 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)

Static Public Member Functions

static KDb::ExpressionClass classForToken (KDbToken token)

Protected Member Functions

 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< ExplicitlySharedExpressionDataPointerchildren () 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)

Protected Attributes

ExplicitlySharedExpressionDataPointer d

Detailed Description

The KDbExpression class represents a base class for all expressions.

Definition at line 51 of file KDbExpression.h.

Constructor & Destructor Documentation

◆ KDbExpression() [1/4]

KDbExpression::KDbExpression ( )

Constructs a null expression.

See also

Definition at line 263 of file KDbExpression.cpp.

◆ ~KDbExpression()

KDbExpression::~KDbExpression ( )

Definition at line 287 of file KDbExpression.cpp.

◆ KDbExpression() [2/4]

KDbExpression::KDbExpression ( KDbExpressionData * data)

Definition at line 276 of file KDbExpression.cpp.

◆ KDbExpression() [3/4]

KDbExpression::KDbExpression ( KDbExpressionData * data,
KDb::ExpressionClass aClass,
KDbToken token )

Definition at line 269 of file KDbExpression.cpp.

◆ KDbExpression() [4/4]

KDbExpression::KDbExpression ( const ExplicitlySharedExpressionDataPointer & ptr)

Definition at line 282 of file KDbExpression.cpp.

Member Function Documentation

◆ appendChild() [1/2]

void KDbExpression::appendChild ( const ExplicitlySharedExpressionDataPointer & child)

Definition at line 461 of file KDbExpression.cpp.

◆ appendChild() [2/2]

void KDbExpression::appendChild ( const KDbExpression & child)

Definition at line 375 of file KDbExpression.cpp.

◆ checkBeforeInsert()

bool KDbExpression::checkBeforeInsert ( const ExplicitlySharedExpressionDataPointer & child)

Definition at line 448 of file KDbExpression.cpp.

◆ children()

QList< ExplicitlySharedExpressionDataPointer > KDbExpression::children ( ) const
the list of children expressions.

Definition at line 370 of file KDbExpression.cpp.

◆ classForToken()

KDb::ExpressionClass KDbExpression::classForToken ( KDbToken token)
expression class for token token.
support more tokens

Definition at line 596 of file KDbExpression.cpp.

◆ clone()

KDbExpression KDbExpression::clone ( ) const

Creates a deep (not shallow) copy of the KDbExpression.

Definition at line 300 of file KDbExpression.cpp.

◆ debug()

QDebug KDbExpression::debug ( QDebug dbg,
KDb::ExpressionCallStack * callStack ) const

Definition at line 484 of file KDbExpression.cpp.

◆ expressionClass()

KDb::ExpressionClass KDbExpression::expressionClass ( ) const
class identifier of this expression. Default expressionClass is KDb::UnknownExpression.

Definition at line 315 of file KDbExpression.cpp.

◆ getQueryParameters()

void KDbExpression::getQueryParameters ( QList< KDbQuerySchemaParameter > * params)

Collects query parameters (messages and types) recursively and saves them to params. The leaf nodes are objects of QueryParameterExpr class.

params must not be 0.

Definition at line 478 of file KDbExpression.cpp.

◆ indexOfChild()

int KDbExpression::indexOfChild ( const KDbExpression & child,
int from = 0 ) const

Definition at line 438 of file KDbExpression.cpp.

◆ insertChild()

void KDbExpression::insertChild ( int i,
const KDbExpression & child )

Definition at line 388 of file KDbExpression.cpp.

◆ insertEmptyChild()

void KDbExpression::insertEmptyChild ( int i)

Used for inserting placeholders, e.g. in KDbBinaryExpression::KDbBinaryExpression()

Definition at line 398 of file KDbExpression.cpp.

◆ isBinary()

bool KDbExpression::isBinary ( ) const

Definition at line 511 of file KDbExpression.cpp.

◆ isConst()

bool KDbExpression::isConst ( ) const

Definition at line 516 of file KDbExpression.cpp.

◆ isDateTimeType()

bool KDbExpression::isDateTimeType ( ) const
true if type of this object belong to a group of time, date and date/time types.

A covenience method.

See also

Definition at line 360 of file KDbExpression.cpp.

◆ isFPNumericType()

bool KDbExpression::isFPNumericType ( ) const
true if type of this object belong to a group of floating-point numeric types.

A covenience method.

See also

Definition at line 355 of file KDbExpression.cpp.

◆ isFunction()

bool KDbExpression::isFunction ( ) const

Definition at line 526 of file KDbExpression.cpp.

◆ isIntegerType()

bool KDbExpression::isIntegerType ( ) const
true if type of this object belong to a group of integer types.

A covenience method.

See also

Definition at line 345 of file KDbExpression.cpp.

◆ isNArg()

bool KDbExpression::isNArg ( ) const

Definition at line 501 of file KDbExpression.cpp.

◆ isNull()

bool KDbExpression::isNull ( ) const
true if this expression is null. Equivalent of expressionClass() == KDb::UnknownExpression.
Returns false for expressions of type KDbField::Null (SQL's NULL).

Definition at line 295 of file KDbExpression.cpp.

◆ isNumericType()

bool KDbExpression::isNumericType ( ) const
true if type of this object belong to a group of numeric types.

A covenience method.

See also

Definition at line 350 of file KDbExpression.cpp.

◆ isQueryParameter()

bool KDbExpression::isQueryParameter ( ) const

Definition at line 531 of file KDbExpression.cpp.

◆ isTextType()

bool KDbExpression::isTextType ( ) const
true if type of this object belong to a group of text types.

A covenience method.

See also

Definition at line 340 of file KDbExpression.cpp.

◆ isUnary()

bool KDbExpression::isUnary ( ) const

Definition at line 506 of file KDbExpression.cpp.

◆ isValid()

bool KDbExpression::isValid ( ) const
true if type of this object is not KDbField::InvalidType.

A covenience method.

See also

Definition at line 335 of file KDbExpression.cpp.

◆ isVariable()

bool KDbExpression::isVariable ( ) const

Definition at line 521 of file KDbExpression.cpp.

◆ lastIndexOfChild()

int KDbExpression::lastIndexOfChild ( const KDbExpression & child,
int from = -1 ) const

Definition at line 443 of file KDbExpression.cpp.

◆ operator!=()

bool KDbExpression::operator!= ( const KDbExpression & e) const

Definition at line 496 of file KDbExpression.cpp.

◆ operator==()

bool KDbExpression::operator== ( const KDbExpression & e) const

Definition at line 491 of file KDbExpression.cpp.

◆ parent()

KDbExpression KDbExpression::parent ( ) const
the parent expression.

Definition at line 365 of file KDbExpression.cpp.

◆ prependChild()

void KDbExpression::prependChild ( const KDbExpression & child)

Definition at line 380 of file KDbExpression.cpp.

◆ removeChild() [1/2]

bool KDbExpression::removeChild ( const KDbExpression & child)

Definition at line 407 of file KDbExpression.cpp.

◆ removeChild() [2/2]

void KDbExpression::removeChild ( int i)

Definition at line 415 of file KDbExpression.cpp.

◆ setExpressionClass()

void KDbExpression::setExpressionClass ( KDb::ExpressionClass aClass)

Sets expression class aClass for this expression.

Definition at line 320 of file KDbExpression.cpp.

◆ setLeftOrRight()

void KDbExpression::setLeftOrRight ( const KDbExpression & right,
int index )

Only for KDbBinaryExpression::setLeft() and KDbBinaryExpression::setRight()

Definition at line 574 of file KDbExpression.cpp.

◆ setToken()

void KDbExpression::setToken ( KDbToken token)

Sets token token for this expression.

Definition at line 310 of file KDbExpression.cpp.

◆ takeChild()

KDbExpression KDbExpression::takeChild ( int i)

Definition at line 425 of file KDbExpression.cpp.

◆ toBinary()

KDbBinaryExpression KDbExpression::toBinary ( ) const

Definition at line 549 of file KDbExpression.cpp.

◆ toConst()

KDbConstExpression KDbExpression::toConst ( ) const

Definition at line 554 of file KDbExpression.cpp.

◆ toFunction()

KDbFunctionExpression KDbExpression::toFunction ( ) const

Definition at line 569 of file KDbExpression.cpp.

◆ token()

KDbToken KDbExpression::token ( ) const
the token for this expression. Tokens are characters (e.g. '+', '-') or identifiers (e.g. SQL_NULL) of elements used by the KDbSQL parser. By default token is 0.

Definition at line 305 of file KDbExpression.cpp.

◆ toNArg()

KDbNArgExpression KDbExpression::toNArg ( ) const

Convenience type casts.

Definition at line 539 of file KDbExpression.cpp.

◆ toQueryParameter()

KDbQueryParameterExpression KDbExpression::toQueryParameter ( ) const

Definition at line 559 of file KDbExpression.cpp.

◆ toString()

KDbEscapedString KDbExpression::toString ( const KDbDriver * driver,
KDbQuerySchemaParameterValueListIterator * params = nullptr,
KDb::ExpressionCallStack * callStack = nullptr ) const
string as a representation of this expression element by running recursive calls. param, if not 0, points to a list item containing value of a query parameter (used in QueryParameterExpr). The result may depend on the optional driver parameter. If driver is 0, representation for portable KDbSQL dialect is returned.

Definition at line 469 of file KDbExpression.cpp.

◆ toUnary()

KDbUnaryExpression KDbExpression::toUnary ( ) const

Definition at line 544 of file KDbExpression.cpp.

◆ toVariable()

KDbVariableExpression KDbExpression::toVariable ( ) const

Definition at line 564 of file KDbExpression.cpp.

◆ type()

KDbField::Type KDbExpression::type ( ) const
type of this expression, based on effect of its evaluation. Default type is KDbField::InvalidType.
See also

Definition at line 330 of file KDbExpression.cpp.

◆ validate()

bool KDbExpression::validate ( KDbParseInfo * parseInfo)
true if evaluation of this expression succeeded.

Definition at line 325 of file KDbExpression.cpp.

Member Data Documentation

◆ d

ExplicitlySharedExpressionDataPointer KDbExpression::d

Definition at line 200 of file KDbExpression.h.

The documentation for this class was generated from the following files:
This file is part of the KDE documentation.
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