Module org.apache.jena.arq

Package org.apache.jena.sparql.expr

Class E_URI2

java.lang.Object

org.apache.jena.sparql.expr.ExprNode

org.apache.jena.sparql.expr.ExprFunction

org.apache.jena.sparql.expr.ExprFunction2

org.apache.jena.sparql.expr.E_IRI2

org.apache.jena.sparql.expr.E_URI2

All Implemented Interfaces:

Expr

public class E_URI2
extends E_IRI2

This class is an alternative name for E_IRI2. See the javadoc for E_IRI2.

Field Summary

Fields inherited from interface org.apache.jena.sparql.expr.Expr

CMP_EQUAL, CMP_GREATER, CMP_INDETERMINATE, CMP_LESS, CMP_UNEQUAL, NONE

Constructor Summary

Constructors

Constructor	Description
E_URI2(Expr baseExpr, String baseStr, Expr relExpr)
E_URI2(Expr baseExpr, Expr relExpr)

Method Summary

Modifier and Type	Method	Description
Expr	copy(Expr expr1, Expr expr2)
boolean	equals(Expr obj, boolean bySyntax)	General equality operation - consider this to be 'protected'
String	getFunctionPrintName(SerializationContext cxt)	Name used for output in SPARQL format needing functional syntax: name(arg1, arg2, ...)
int	hashCode()	Expr are used in both syntax and algebra.

Methods inherited from class org.apache.jena.sparql.expr.E_IRI2

eval, eval, getBaseExpr, getParserBase, getRelExpr

Methods inherited from class org.apache.jena.sparql.expr.ExprFunction2

apply, applyNodeTransform, copySubstitute, eval, getArg, getArg1, getArg2, numArgs, visit

Methods inherited from class org.apache.jena.sparql.expr.ExprFunction

getArgs, getFunction, getFunctionIRI, getFunctionName, getFunctionSymbol, getOpName, isFunction

Methods inherited from class org.apache.jena.sparql.expr.ExprNode

asVar, deepCopy, equals, equalsBySyntax, getConstant, getExpr, getExprVar, getGraphPattern, getVarName, getVarsMentioned, isConstant, isExpr, isGraphPattern, isSatisfied, isVariable, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Details

E_URI2

public E_URI2(Expr baseExpr,
 Expr relExpr)

E_URI2

public E_URI2(Expr baseExpr,
 String baseStr,
 Expr relExpr)

Method Details

copy

public Expr copy(Expr expr1,
 Expr expr2)

Overrides:

copy in class E_IRI2

getFunctionPrintName

public String getFunctionPrintName(SerializationContext cxt)

Description copied from class: ExprFunction

Name used for output in SPARQL format needing functional syntax: name(arg1, arg2, ...) e.g. regexp(), custom functions, ...

Overrides:

getFunctionPrintName in class E_IRI2

hashCode

public int hashCode()

Description copied from interface: Expr

Expr are used in both syntax and algebra. There is no syntax to algebra translation step because the parser uses operator precedence to build the right evaluation structure directly.

The exceptions to this are the NOT EXISTS and EXISTS expressions which involve a query pattern. As a result there are different ways in syntax to produce the same algebra form.

Two Expr are considered equal if they are equal as algebra expressions. hashCode and equals must implement that.

There is also equalsBySyntax. Because two different syntax forms can yield the same algebra, but two different algebra forms must be different syntax, equalsBySyntax implies equals (by algebra).

Hence, different hashCode => not equalsBySyntax.

Specified by:

hashCode in interface Expr

Overrides:

hashCode in class E_IRI2

equals

public boolean equals(Expr obj,
 boolean bySyntax)

Description copied from interface: Expr

General equality operation - consider this to be 'protected'

Specified by:

equals in interface Expr

Overrides:

equals in class E_IRI2