org.da.sparqlhelper.sparql.model.expressions

Class VariableExpression

java.lang.Object

org.da.sparqlhelper.sparql.model.expressions.AbstractExpression

org.da.sparqlhelper.sparql.model.expressions.VariableExpression

All Implemented Interfaces:

Expression

public class VariableExpression
extends AbstractExpression

A variable expression (encapsulates a variable).

Field Summary

Fields inherited from class org.da.sparqlhelper.sparql.model.expressions.AbstractExpression

operator

Fields inherited from interface org.da.sparqlhelper.sparql.model.expressions.Expression

AND, DEFAULT, DIVIDE, MINUS, MULTIPLY, NOT, OR, PLUS

Constructor Summary

Constructors

Constructor and Description
VariableExpression(java.lang.String var)

Method Summary

Modifier and Type	Method and Description
void	appendContent(java.lang.String prefix, java.lang.StringBuilder buf) Append the expression content to a buffer.
boolean	checkValidity(ISparqlRequestGroup request) Return true if the expression is valid.
java.util.Set<java.lang.String>	getOutputVariables() Return the variable used in the expression.
java.lang.String	getVariable() Return the variable.
java.util.Set<java.lang.String>	getVariables() Return the variable used in the expression.
boolean	isSimpleExpression() Return true.
java.lang.String	toString()

Methods inherited from class org.da.sparqlhelper.sparql.model.expressions.AbstractExpression

getOperator, setOperator

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.da.sparqlhelper.sparql.model.expressions.Expression

getContent, getOperatorAsString, getOperatorAsString

Constructor Detail

VariableExpression

public VariableExpression(java.lang.String var)

Method Detail

getVariable

public java.lang.String getVariable()

Return the variable.

Returns:

the variable

getOutputVariables

public java.util.Set<java.lang.String> getOutputVariables()

Return the variable used in the expression.

Returns:

the variable

getVariables

public java.util.Set<java.lang.String> getVariables()

Return the variable used in the expression.

Returns:

the variables

isSimpleExpression

public boolean isSimpleExpression()

Return true.

Returns:

true

checkValidity

public boolean checkValidity(ISparqlRequestGroup request)

Description copied from interface: Expression

Return true if the expression is valid.

Parameters:

request - the request

Returns:

true if the expression is valid

appendContent

public void appendContent(java.lang.String prefix,
                          java.lang.StringBuilder buf)

Description copied from interface: Expression

Append the expression content to a buffer.

Parameters:

prefix - the prefix

buf - the buffer

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object