com.hp.hpl.jena.sparql.expr

Class ExprVar

java.lang.Object

com.hp.hpl.jena.sparql.expr.ExprNode

com.hp.hpl.jena.sparql.expr.ExprVar

All Implemented Interfaces:

Expr

public class ExprVar
extends ExprNode

An expression that is a variable in an expression.

Field Summary

Fields inherited from interface com.hp.hpl.jena.sparql.expr.Expr

CMP_EQUAL, CMP_GREATER, CMP_INDETERMINATE, CMP_LESS, CMP_UNEQUAL

Constructor Summary

Constructors

Constructor and Description
ExprVar(Node n)
ExprVar(String name)
ExprVar(Var v)

Method Summary

Methods

Modifier and Type	Method and Description
Expr	apply(ExprTransform transform)
Expr	applyNodeTransform(NodeTransform transform) Rewrite, applying a node->node transformation
String	asSparqlExpr()
Var	asVar() Convert to a Var variable.
Expr	copy(Var v)
Expr	copySubstitute(Binding binding, boolean foldConstants)
boolean	equals(Object other)
NodeValue	eval(Binding binding, FunctionEnv env) Evaluate this expression against the binding
void	format(Query query, IndentedWriter out)
Node	getAsNode()
ExprVar	getExprVar() Variable (or null)
String	getVarName() Variable name (returns null if not a variable)
int	hashCode()
boolean	isVariable() Answer whether this is a variable (in which case getVarName and getNodeVar can be called)
String	toPrefixString()
String	toString()
void	visit(ExprVisitor visitor)

Methods inherited from class com.hp.hpl.jena.sparql.expr.ExprNode

copySubstitute, deepCopy, getConstant, getExpr, getFunction, getGraphPattern, getVarNamesMentioned, getVarsMentioned, isConstant, isExpr, isFunction, isGraphPattern, isSatisfied, varNamesMentioned, varsMentioned

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ExprVar

public ExprVar(String name)

ExprVar

public ExprVar(Node n)

ExprVar

public ExprVar(Var v)

Method Detail

eval

public NodeValue eval(Binding binding,
             FunctionEnv env)

Description copied from interface: Expr

Evaluate this expression against the binding

Specified by:

eval in interface Expr

Specified by:

eval in class ExprNode

copySubstitute

public Expr copySubstitute(Binding binding,
                  boolean foldConstants)

Specified by:

copySubstitute in interface Expr

Specified by:

copySubstitute in class ExprNode

applyNodeTransform

public Expr applyNodeTransform(NodeTransform transform)

Description copied from interface: Expr

Rewrite, applying a node->node transformation

Specified by:

applyNodeTransform in interface Expr

Specified by:

applyNodeTransform in class ExprNode

copy

public Expr copy(Var v)

visit

public void visit(ExprVisitor visitor)

apply

public Expr apply(ExprTransform transform)

format

public void format(Query query,
          IndentedWriter out)

hashCode

public int hashCode()

Specified by:

hashCode in class ExprNode

equals

public boolean equals(Object other)

Specified by:

equals in class ExprNode

isVariable

public boolean isVariable()

Description copied from interface: Expr

Answer whether this is a variable (in which case getVarName and getNodeVar can be called)

Specified by:

isVariable in interface Expr

Overrides:

isVariable in class ExprNode

getVarName

public String getVarName()

Description copied from interface: Expr

Variable name (returns null if not a variable)

Specified by:

getVarName in interface Expr

Overrides:

getVarName in class ExprNode

Returns:

Returns the name.

getExprVar

public ExprVar getExprVar()

Description copied from interface: Expr

Variable (or null)

Specified by:

getExprVar in interface Expr

Overrides:

getExprVar in class ExprNode

asVar

public Var asVar()

Description copied from interface: Expr

Convert to a Var variable.

Specified by:

asVar in interface Expr

Overrides:

asVar in class ExprNode

getAsNode

public Node getAsNode()

toPrefixString

public String toPrefixString()

asSparqlExpr

public String asSparqlExpr()

toString

public String toString()

Overrides:

toString in class ExprNode