de.fuberlin.wiwiss.d2rq.expr

Class BinaryOperator

java.lang.Object

de.fuberlin.wiwiss.d2rq.expr.Expression

de.fuberlin.wiwiss.d2rq.expr.BinaryOperator

Direct Known Subclasses:

Add, Divide, GreaterThan, GreaterThanOrEqual, LessThan, LessThanOrEqual, Multiply, Subtract

public abstract class BinaryOperator
extends Expression

Field Summary

Fields

Modifier and Type	Field and Description
protected Expression	expr1
protected Expression	expr2
protected String	operator

Fields inherited from class de.fuberlin.wiwiss.d2rq.expr.Expression

FALSE, TRUE

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BinaryOperator(Expression expr1, Expression expr2, String operator)

Method Summary

Methods

Modifier and Type	Method and Description
Set<Attribute>	attributes()
boolean	equals(Object other)
int	hashCode()
boolean	isFalse()
boolean	isTrue()
String	toSQL(ConnectedDB database, AliasMap aliases)
String	toString()

Methods inherited from class de.fuberlin.wiwiss.d2rq.expr.Expression

and, or, renameAttributes

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

expr1

protected final Expression expr1

expr2

protected final Expression expr2

operator

protected final String operator

Constructor Detail

BinaryOperator

protected BinaryOperator(Expression expr1,
              Expression expr2,
              String operator)

Method Detail

attributes

public Set<Attribute> attributes()

Specified by:

attributes in class Expression

isFalse

public boolean isFalse()

Specified by:

isFalse in class Expression

isTrue

public boolean isTrue()

Specified by:

isTrue in class Expression

toSQL

public String toSQL(ConnectedDB database,
           AliasMap aliases)

Specified by:

toSQL in class Expression

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object