org.da.sparqlhelper.sparql.model.expressions

Class LiteralExpression

java.lang.Object

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

org.da.sparqlhelper.sparql.model.expressions.LiteralExpression

All Implemented Interfaces:

Expression

public class LiteralExpression
extends AbstractExpression

Represent a litteral appearing in a BIND, FILTER, or COALESCE construct.

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
LiteralExpression(java.lang.Object literal)
LiteralExpression(java.lang.Object literal, java.lang.String qname)

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.
java.lang.Object	getLiteral() Return the literal.
java.util.Set<java.lang.String>	getOutputVariables() Return an empty set.
java.lang.String	getQName() Return the qualified name (may be null).
java.util.Set<java.lang.String>	getVariables() Return an empty set.
boolean	isSimpleExpression() Return true.

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, toString, wait, wait, wait

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

getContent, getOperatorAsString, getOperatorAsString

Constructor Detail

LiteralExpression

public LiteralExpression(java.lang.Object literal)

LiteralExpression

public LiteralExpression(java.lang.Object literal,
                         java.lang.String qname)

Method Detail

getLiteral

public java.lang.Object getLiteral()

Return the literal.

Returns:

the literal

getQName

public java.lang.String getQName()

Return the qualified name (may be null).

Returns:

the qualified name

getOutputVariables

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

Return an empty set.

Returns:

the variables

getVariables

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

Return an empty set.

Returns:

the variables

isSimpleExpression

public boolean isSimpleExpression()

Return true.

Returns:

true

checkValidity

public boolean checkValidity(ISparqlRequestGroup request)

Return true.

Parameters:

request - the request

Returns:

true

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