Package org.jaxen.expr

Class DefaultXPathFactory

java.lang.Object

org.jaxen.expr.DefaultXPathFactory

All Implemented Interfaces:

XPathFactory

public class DefaultXPathFactory
extends Object
implements XPathFactory

The concrete implementation of the XPathFactory anstract factory.

See Also:

XPathFactory

Constructor Summary

Constructors

Constructor	Description
DefaultXPathFactory()

Method Summary

Modifier and Type	Method	Description
LocationPath	createAbsoluteLocationPath()	Create a new empty absolute location path.
BinaryExpr	createAdditiveExpr(Expr lhs, Expr rhs, int additiveOperator)	Returns a new XPath additive expression.
Step	createAllNodeStep(int axis)	Create a step with a node() node-test.
BinaryExpr	createAndExpr(Expr lhs, Expr rhs)	Returns a new XPath And expression.
Step	createCommentNodeStep(int axis)	Create a step with a comment() node-test.
BinaryExpr	createEqualityExpr(Expr lhs, Expr rhs, int equalityOperator)	Returns a new XPath equality expression.
FilterExpr	createFilterExpr(Expr expr)	Returns a new XPath filter expression.
FunctionCallExpr	createFunctionCallExpr(String prefix, String functionName)	Create a new function call expression.
LiteralExpr	createLiteralExpr(String literal)	Create a string literal expression.
BinaryExpr	createMultiplicativeExpr(Expr lhs, Expr rhs, int multiplicativeOperator)	Returns a new XPath multiplicative expression.
Step	createNameStep(int axis, String prefix, String localName)	Create a step with a named node-test.
NumberExpr	createNumberExpr(double number)	Create a number expression.
NumberExpr	createNumberExpr(int number)	Create a number expression.
BinaryExpr	createOrExpr(Expr lhs, Expr rhs)	Returns a new XPath Or expression.
PathExpr	createPathExpr(FilterExpr filterExpr, LocationPath locationPath)	Create a new path expression.
Predicate	createPredicate(Expr predicateExpr)	Create from the supplied expression.
PredicateSet	createPredicateSet()	Create an empty predicate set.
Step	createProcessingInstructionNodeStep(int axis, String piName)	Create a step with a processing-instruction() node-test.
BinaryExpr	createRelationalExpr(Expr lhs, Expr rhs, int relationalOperator)	Returns a new XPath relational expression.
LocationPath	createRelativeLocationPath()	Create a new empty relative location path.
Step	createTextNodeStep(int axis)	Create a step with a text() node-test.
Expr	createUnaryExpr(Expr expr, int unaryOperator)	Returns a new XPath unary expression.
UnionExpr	createUnionExpr(Expr lhs, Expr rhs)	Returns a new XPath union expression.
VariableReferenceExpr	createVariableReferenceExpr(String prefix, String variable)	Create a new variable reference expression.
XPathExpr	createXPath(Expr rootExpr)	Create a new XPathExpr from an Expr.
protected IterableAxis	getIterableAxis(int axis)

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultXPathFactory

public DefaultXPathFactory()

Method Detail

createXPath

public XPathExpr createXPath(Expr rootExpr)
                      throws JaxenException

Description copied from interface: XPathFactory

Create a new XPathExpr from an Expr.

Specified by:

createXPath in interface XPathFactory

Parameters:

rootExpr - the expression wrapped by the resulting XPathExpr

Returns:

an XPathExpr wrapping the root expression

Throws:

JaxenException

createPathExpr

public PathExpr createPathExpr(FilterExpr filterExpr,
                               LocationPath locationPath)
                        throws JaxenException

Description copied from interface: XPathFactory

Create a new path expression.

Specified by:

createPathExpr in interface XPathFactory

Parameters:

filterExpr - the filter expression that starts the path expression

locationPath - the location path that follows the filter expression

Returns:

a path expression formed by concatenating the two arguments

Throws:

JaxenException

createRelativeLocationPath

public LocationPath createRelativeLocationPath()
                                        throws JaxenException

Description copied from interface: XPathFactory

Create a new empty relative location path.

Specified by:

createRelativeLocationPath in interface XPathFactory

Returns:

an empty relative location path

Throws:

JaxenException

createAbsoluteLocationPath

public LocationPath createAbsoluteLocationPath()
                                        throws JaxenException

Description copied from interface: XPathFactory

Create a new empty absolute location path.

Specified by:

createAbsoluteLocationPath in interface XPathFactory

Returns:

an empty absolute location path

Throws:

JaxenException

createOrExpr

public BinaryExpr createOrExpr(Expr lhs,
                               Expr rhs)
                        throws JaxenException

Description copied from interface: XPathFactory

Returns a new XPath Or expression.

Specified by:

createOrExpr in interface XPathFactory

Parameters:

lhs - the left hand side of the expression

rhs - the right hand side of the expression

Returns:

lhs or rhs

Throws:

JaxenException

createAndExpr

public BinaryExpr createAndExpr(Expr lhs,
                                Expr rhs)
                         throws JaxenException

Description copied from interface: XPathFactory

Returns a new XPath And expression.

Specified by:

createAndExpr in interface XPathFactory

Parameters:

lhs - the left hand side of the expression

rhs - the right hand side of the expression

Returns:

lhs and rhs

Throws:

JaxenException

createEqualityExpr

public BinaryExpr createEqualityExpr(Expr lhs,
                                     Expr rhs,
                                     int equalityOperator)
                              throws JaxenException

Description copied from interface: XPathFactory

Returns a new XPath equality expression.

Specified by:

createEqualityExpr in interface XPathFactory

Parameters:

lhs - the left hand side of the expression

rhs - the right hand side of the expression

equalityOperator - Operator.EQUALS or Operator.NOT_EQUALS

Returns:

lhs = rhs or lhs != rhs

Throws:

JaxenException - if the third argument is not Operator.EQUALS or Operator.NOT_EQUALS

createRelationalExpr

public BinaryExpr createRelationalExpr(Expr lhs,
                                       Expr rhs,
                                       int relationalOperator)
                                throws JaxenException

Description copied from interface: XPathFactory

Returns a new XPath relational expression.

Specified by:

createRelationalExpr in interface XPathFactory

Parameters:

lhs - the left hand side of the expression

rhs - the right hand side of the expression

relationalOperator - Operator.LESS_THAN, Operator.GREATER_THAN, Operator.LESS_THAN_EQUALS, or Operator.GREATER_THAN_EQUALS

Returns:

lhs relationalOperator rhs or lhs != rhs

Throws:

JaxenException - if the third argument is not a relational operator constant

createAdditiveExpr

public BinaryExpr createAdditiveExpr(Expr lhs,
                                     Expr rhs,
                                     int additiveOperator)
                              throws JaxenException

Description copied from interface: XPathFactory

Returns a new XPath additive expression.

Specified by:

createAdditiveExpr in interface XPathFactory

Parameters:

lhs - the left hand side of the expression

rhs - the right hand side of the expression

additiveOperator - Operator.ADD or Operator.SUBTRACT

Returns:

lhs + rhs or lhs - rhs

Throws:

JaxenException - if the third argument is not Operator.ADD or Operator.SUBTRACT

createMultiplicativeExpr

public BinaryExpr createMultiplicativeExpr(Expr lhs,
                                           Expr rhs,
                                           int multiplicativeOperator)
                                    throws JaxenException

Description copied from interface: XPathFactory

Returns a new XPath multiplicative expression.

Specified by:

createMultiplicativeExpr in interface XPathFactory

Parameters:

lhs - the left hand side of the expression

rhs - the right hand side of the expression

multiplicativeOperator - Operator.MULTIPLY, Operator.DIV, or Operator.MOD

Returns:

lhs * rhs, lhs div rhs, or lhs mod rhs

Throws:

JaxenException - if the third argument is not a multiplicative operator constant

createUnaryExpr

public Expr createUnaryExpr(Expr expr,
                            int unaryOperator)
                     throws JaxenException

Description copied from interface: XPathFactory

Returns a new XPath unary expression.

Specified by:

createUnaryExpr in interface XPathFactory

Parameters:

expr - the expression to be negated

unaryOperator - Operator.NEGATIVE

Returns:

- expr or expr

Throws:

JaxenException

createUnionExpr

public UnionExpr createUnionExpr(Expr lhs,
                                 Expr rhs)
                          throws JaxenException

Description copied from interface: XPathFactory

Returns a new XPath union expression.

Specified by:

createUnionExpr in interface XPathFactory

Parameters:

lhs - the left hand side of the expression

rhs - the right hand side of the expression

Returns:

lhs | rhs

Throws:

JaxenException

createFilterExpr

public FilterExpr createFilterExpr(Expr expr)
                            throws JaxenException

Description copied from interface: XPathFactory

Returns a new XPath filter expression.

Specified by:

createFilterExpr in interface XPathFactory

Parameters:

expr - the basic expression to which the predicate will be added

Returns:

the expression with an empty predicate set

Throws:

JaxenException

createFunctionCallExpr

public FunctionCallExpr createFunctionCallExpr(String prefix,
                                               String functionName)
                                        throws JaxenException

Description copied from interface: XPathFactory

Create a new function call expression.

Specified by:

createFunctionCallExpr in interface XPathFactory

Parameters:

prefix - the namespace prefix of the function

functionName - the local name of the function

Returns:

a function with an empty argument list

Throws:

JaxenException

createNumberExpr

public NumberExpr createNumberExpr(int number)
                            throws JaxenException

Description copied from interface: XPathFactory

Create a number expression.

Specified by:

createNumberExpr in interface XPathFactory

Parameters:

number - the value

Returns:

a number expression wrapping that value

Throws:

JaxenException

createNumberExpr

public NumberExpr createNumberExpr(double number)
                            throws JaxenException

Description copied from interface: XPathFactory

Create a number expression.

Specified by:

createNumberExpr in interface XPathFactory

Parameters:

number - the value

Returns:

a number expression wrapping that value

Throws:

JaxenException

createLiteralExpr

public LiteralExpr createLiteralExpr(String literal)
                              throws JaxenException

Description copied from interface: XPathFactory

Create a string literal expression.

Specified by:

createLiteralExpr in interface XPathFactory

Parameters:

literal - the value

Returns:

a literal expression wrapping that value

Throws:

JaxenException

createVariableReferenceExpr

public VariableReferenceExpr createVariableReferenceExpr(String prefix,
                                                         String variable)
                                                  throws JaxenException

Description copied from interface: XPathFactory

Create a new variable reference expression.

Specified by:

createVariableReferenceExpr in interface XPathFactory

Parameters:

prefix - the namespace prefix of the variable

variable - the local name of the variable

Returns:

a variable expression

Throws:

JaxenException

createNameStep

public Step createNameStep(int axis,
                           String prefix,
                           String localName)
                    throws JaxenException

Description copied from interface: XPathFactory

Create a step with a named node-test.

Specified by:

createNameStep in interface XPathFactory

Parameters:

axis - the axis to create the name-test on

prefix - the namespace prefix for the test

localName - the local name for the test

Returns:

a name step

Throws:

JaxenException - if axis is not one of the axis constants????

createTextNodeStep

public Step createTextNodeStep(int axis)
                        throws JaxenException

Description copied from interface: XPathFactory

Create a step with a text() node-test.

Specified by:

createTextNodeStep in interface XPathFactory

Parameters:

axis - the axis to create the text() node-test on

Returns:

a text node step

Throws:

JaxenException - if axis is not one of the axis constants????

createCommentNodeStep

public Step createCommentNodeStep(int axis)
                           throws JaxenException

Description copied from interface: XPathFactory

Create a step with a comment() node-test.

Specified by:

createCommentNodeStep in interface XPathFactory

Parameters:

axis - the axis to create the comment() node-test on

Returns:

a comment node step

Throws:

JaxenException - if axis is not one of the axis constants????

createAllNodeStep

public Step createAllNodeStep(int axis)
                       throws JaxenException

Description copied from interface: XPathFactory

Create a step with a node() node-test.

Specified by:

createAllNodeStep in interface XPathFactory

Parameters:

axis - the axis to create the node-test on

Returns:

an all node step

Throws:

JaxenException - if axis is not one of the axis constants????

createProcessingInstructionNodeStep

public Step createProcessingInstructionNodeStep(int axis,
                                                String piName)
                                         throws JaxenException

Description copied from interface: XPathFactory

Create a step with a processing-instruction() node-test.

Specified by:

createProcessingInstructionNodeStep in interface XPathFactory

Parameters:

axis - the axis to create the processing-instruction() node-test on

piName - the target to match, may be empty

Returns:

a processing instruction node step

Throws:

JaxenException - if axis is not one of the axis constants????

createPredicate

public Predicate createPredicate(Expr predicateExpr)
                          throws JaxenException

Description copied from interface: XPathFactory

Create from the supplied expression.

Specified by:

createPredicate in interface XPathFactory

Parameters:

predicateExpr - the expression to evaluate in the predicate

Returns:

a predicate

Throws:

JaxenException

getIterableAxis

protected IterableAxis getIterableAxis(int axis)
                                throws JaxenException

Throws:

JaxenException

createPredicateSet

public PredicateSet createPredicateSet()
                                throws JaxenException

Description copied from interface: XPathFactory

Create an empty predicate set.

Specified by:

createPredicateSet in interface XPathFactory

Returns:

an empty predicate set

Throws:

JaxenException