org.ucl.xpath.ast
Class CmpExpr

java.lang.Object
  org.ucl.xpath.ast.XPathNode
      org.ucl.xpath.ast.Expr
          org.ucl.xpath.ast.BinExpr
              org.ucl.xpath.ast.CmpExpr

public class CmpExpr

extends BinExpr

The comparison of expression operator takes the value of its left operand and compares (dependant on type) against its right operand, according to the rules of the particular comparison rule

Field Summary

static int	EQ Set internal value for EQ operation.
static int	EQUALS Set internal value for EQUALS operation.
static int	GE Set internal value for GE operation.
static int	GREATER Set internal value for GREATER operation.
static int	GREATER_GREATER Set internal value for GREATER_GREATER operation.
static int	GREATEREQUAL Set internal value for GREATEREQUAL operation.
static int	GT Set internal value for GT operation.
static int	IS Set internal value for IS operation.
static int	LE Set internal value for LE operation.
static int	LESS_LESS Set internal value for LESS_LESS operation.
static int	LESSEQUAL Set internal value for LESSEQUAL operation.
static int	LESSTHAN Set internal value for LESSTHAN operation.
static int	LT Set internal value for LT operation.
static int	NE Set internal value for NE operation.
static int	NOTEQUALS Set internal value for NOTEQUALS operation.

Constructor Summary

CmpExpr(Expr l, Expr r, int type)
Constructor for CmpExpr

Method Summary

java.lang.Object	accept(XPathVisitor v) Support for Visitor interface.
int	type()

Methods inherited from class org.ucl.xpath.ast.BinExpr

left, right, set_left, set_right

Methods inherited from class java.lang.Object

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

Field Detail

EQUALS

public static final int EQUALS

Set internal value for EQUALS operation.

See Also:

Constant Field Values

NOTEQUALS

public static final int NOTEQUALS

Set internal value for NOTEQUALS operation.

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Constant Field Values

LESSTHAN

public static final int LESSTHAN

Set internal value for LESSTHAN operation.

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Constant Field Values

LESSEQUAL

public static final int LESSEQUAL

Set internal value for LESSEQUAL operation.

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Constant Field Values

GREATER

public static final int GREATER

Set internal value for GREATER operation.

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Constant Field Values

GREATEREQUAL

public static final int GREATEREQUAL

Set internal value for GREATEREQUAL operation.

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Constant Field Values

EQ

public static final int EQ

Set internal value for EQ operation.

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Constant Field Values

NE

public static final int NE

Set internal value for NE operation.

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Constant Field Values

LT

public static final int LT

Set internal value for LT operation.

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Constant Field Values

LE

public static final int LE

Set internal value for LE operation.

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Constant Field Values

GT

public static final int GT

Set internal value for GT operation.

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Constant Field Values

GE

public static final int GE

Set internal value for GE operation.

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Constant Field Values

IS

public static final int IS

Set internal value for IS operation.

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Constant Field Values

LESS_LESS

public static final int LESS_LESS

Set internal value for LESS_LESS operation.

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Constant Field Values

GREATER_GREATER

public static final int GREATER_GREATER

Set internal value for GREATER_GREATER operation.

See Also:

Constant Field Values

Constructor Detail

CmpExpr

public CmpExpr(Expr l,
               Expr r,
               int type)

Constructor for CmpExpr

Parameters:

l - input xpath left expression/variable

r - input xpath right expression/variable

type - what comparison to use l against r.

Method Detail

accept

public java.lang.Object accept(XPathVisitor v)

Support for Visitor interface.

Specified by:

accept in class XPathNode

Returns:

Result of Visitor operation.

type

public int type()

Returns:

comparison type