org.jrdf.query.expression
Class Projection<V extends ExpressionVisitor>

java.lang.Object
  org.jrdf.query.expression.Projection<V>

All Implemented Interfaces:

Serializable, Expression<V>

public final class Projection<V extends ExpressionVisitor>
extends Object
implements Expression<V>

Variables in a SELECT cause.

Version:

$Revision:$

Author:

Andrew Newman

See Also:

Serialized Form

Constructor Summary

Projection(VariableCollector collector, LinkedHashSet<AttributeName> declaredVariables, Expression<ExpressionVisitor> nextExpression)

Method Summary

void	accept(ExpressionVisitor v)
boolean	equals(Object obj)
Map<AttributeName,PositionalNodeType>	getAllVariables()
LinkedHashSet<Attribute>	getAttributes()
Expression<ExpressionVisitor>	getNextExpression()
int	hashCode()
String	toString() Delegates to getAvp().toString().

Methods inherited from class java.lang.Object

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

Constructor Detail

Projection

public Projection(VariableCollector collector,
                  LinkedHashSet<AttributeName> declaredVariables,
                  Expression<ExpressionVisitor> nextExpression)
           throws org.jrdf.sparql.parser.parser.ParserException

Throws:

org.jrdf.sparql.parser.parser.ParserException

Method Detail

accept

public void accept(ExpressionVisitor v)

Specified by:

accept in interface Expression<V extends ExpressionVisitor>

getAttributes

public LinkedHashSet<Attribute> getAttributes()

getAllVariables

public Map<AttributeName,PositionalNodeType> getAllVariables()

getNextExpression

public Expression<ExpressionVisitor> getNextExpression()

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Delegates to getAvp().toString().

Overrides:

toString in class Object