org.exolab.adaptx.xpath.expressions
Interface Operator

public interface Operator

Represents an Logical or Mathimatical Operator that operates on binary expressions.

Version:

$Revision: 3957 $

Author:

Keith Visco

Field Summary

static int	ADD_OPERATOR The add operator type
static int	AND_OPERATOR The and operator type
static int	DIVIDE_OPERATOR The divide operator type
static int	EQUALITY_OPERATOR The "equality" operator type
static int	MODULUS_OPERATOR The modulus operator type
static int	MULTIPLY_OPERATOR The multiply operator type
static int	OR_OPERATOR The or operator type
static int	QUOTIENT_OPERATOR The quotient operator type
static int	SUBTRACT_OPERATOR The subtract operator type

Method Summary

XPathResult	execute(XPathExpression left, XPathExpression right, XPathContext context) Executes this operator on the given expressions
XPathResult	execute(XPathResult left, XPathResult right) Executes this operator on the given XPath values
int	getOperatorType() Returns the type for this Operator.

Field Detail

ADD_OPERATOR

static final int ADD_OPERATOR

The add operator type

See Also:

Constant Field Values

AND_OPERATOR

static final int AND_OPERATOR

The and operator type

See Also:

Constant Field Values

DIVIDE_OPERATOR

static final int DIVIDE_OPERATOR

The divide operator type

See Also:

Constant Field Values

EQUALITY_OPERATOR

static final int EQUALITY_OPERATOR

The "equality" operator type

See Also:

Constant Field Values

MODULUS_OPERATOR

static final int MODULUS_OPERATOR

The modulus operator type

See Also:

Constant Field Values

MULTIPLY_OPERATOR

static final int MULTIPLY_OPERATOR

The multiply operator type

See Also:

Constant Field Values

OR_OPERATOR

static final int OR_OPERATOR

The or operator type

See Also:

Constant Field Values

QUOTIENT_OPERATOR

static final int QUOTIENT_OPERATOR

The quotient operator type

See Also:

Constant Field Values

SUBTRACT_OPERATOR

static final int SUBTRACT_OPERATOR

The subtract operator type

See Also:

Constant Field Values

Method Detail

getOperatorType

int getOperatorType()

Returns the type for this Operator. The operator type may be one of the pre-defined types, or a user-defined type.

Returns:

the operator type

execute

XPathResult execute(XPathExpression left,
                    XPathExpression right,
                    XPathContext context)
                    throws XPathException

Executes this operator on the given expressions

Parameters:

left - the left-side expression

right - the right-side expression

context - the XPathContext

Returns:

the XPathResult

Throws:

XPathException - when an error occurs during execution

execute

XPathResult execute(XPathResult left,
                    XPathResult right)
                    throws XPathException

Executes this operator on the given XPath values

Parameters:

left - the left-side expression

right - the right-side expression

Returns:

the XPathResult

Throws:

XPathException - when an error occurs during execution