com.exasol.sql.expression

Class BooleanLiteral

java.lang.Object

com.exasol.util.AbstractBottomUpTreeNode

com.exasol.sql.expression.AbstractBooleanExpression

com.exasol.sql.expression.BooleanLiteral

All Implemented Interfaces:

BooleanExpression, ValueExpression, TreeNode

public final class BooleanLiteral
extends AbstractBooleanExpression
implements ValueExpression

This class represents boolean literals (read "true" and "false")

Method Summary

Modifier and Type	Method and Description
void	accept(ValueExpressionVisitor visitor) Accept a visitor
void	acceptConcrete(BooleanExpressionVisitor visitor) Sub-classes must override this method so that the visitor knows the type of the visited class at compile time.
void	dismissConcrete(BooleanExpressionVisitor visitor) Sub-classes must override this method so that the visitor knows the type of the visited class at compile time.
static BooleanLiteral	of(boolean value)
static BooleanLiteral	of(String value) Create a new BooleanLiteral instance from a String.
boolean	toBoolean() Get boolean value this literal represents.
static BooleanExpression[]	toBooleanExpressions(boolean[] values) Map an array of booleans to and array of BooleanExpressions
String	toString()

Methods inherited from class com.exasol.sql.expression.AbstractBooleanExpression

accept

Methods inherited from class com.exasol.util.AbstractBottomUpTreeNode

addChild, getChild, getChildren, getParent, getRoot, isChild, isFirstSibling, isRoot, isSibling, setParent

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.exasol.util.TreeNode

addChild, getChild, getChildren, getParent, getRoot, isChild, isFirstSibling, isRoot, isSibling, setParent

Method Detail

of

public static BooleanLiteral of(boolean value)

of

public static BooleanLiteral of(String value)

Create a new BooleanLiteral instance from a String.

Parameters:

value - the string to be turned into a literal

Returns:

new BooleanLiteral instance

Throws:

IllegalArgumentException - in case the literal is not recognized.

toString

public String toString()

Overrides:

toString in class Object

toBoolean

public boolean toBoolean()

Get boolean value this literal represents.

Returns:

boolean value.

acceptConcrete

public void acceptConcrete(BooleanExpressionVisitor visitor)

Description copied from class: AbstractBooleanExpression

Sub-classes must override this method so that the visitor knows the type of the visited class at compile time.

Specified by:

acceptConcrete in class AbstractBooleanExpression

Parameters:

visitor - visitor to accept

dismissConcrete

public void dismissConcrete(BooleanExpressionVisitor visitor)

Description copied from class: AbstractBooleanExpression

Sub-classes must override this method so that the visitor knows the type of the visited class at compile time.

Specified by:

dismissConcrete in class AbstractBooleanExpression

Parameters:

visitor - visitor to accept

toBooleanExpressions

public static BooleanExpression[] toBooleanExpressions(boolean[] values)

Map an array of booleans to and array of BooleanExpressions

Parameters:

values - string literals to be turned into boolean expressions

Returns:

boolean expressions

accept

public void accept(ValueExpressionVisitor visitor)

Description copied from interface: ValueExpression

Accept a visitor

Specified by:

accept in interface ValueExpression

Overrides:

accept in class AbstractBooleanExpression

Parameters:

visitor - visitor to accept