com.caucho.xpath.expr

Class BooleanExpr

java.lang.Object

com.caucho.xpath.Expr

com.caucho.xpath.expr.BooleanExpr

public class BooleanExpr
extends Expr

Field Summary

Fields inherited from class com.caucho.xpath.Expr

ADD, AND, ATTRIBUTE, BASE_URI, BOOLEAN, BOOLEAN_EQ, BOOLEAN_NEQ, CEILING, CONCAT, CONST, CONTAINS, COUNT, DIV, ELEMENT, EQ, FALSE, FLOOR, FORMAT_NUMBER, FUNCTION_AVAILABLE, GE, GENERATE_ID, GT, ID, IF, LANG, LAST, LAST_FUN, LE, LOCAL_PART, LT, MOD, MUL, NAMESPACE, NEG, NEQ, NODE_SET, NORMALIZE, NOT, NUMBER, NUMBER_EQ, NUMBER_GE, NUMBER_GT, NUMBER_LE, NUMBER_LT, NUMBER_NEQ, OR, POSITION, QNAME, QUO, ROUND, SELF, SELF_NAME, STARTS_WITH, STRING, STRING_EQ, STRING_LENGTH, STRING_NEQ, SUB, SUBSTRING, SUBSTRING_AFTER, SUBSTRING_BEFORE, SUM, SYSTEM_PROPERTY, TRANSLATE, TRUE

Constructor Summary

Constructors

Constructor and Description
BooleanExpr(boolean value)
BooleanExpr(int code, java.util.ArrayList args)
BooleanExpr(int code, Expr expr)
BooleanExpr(int code, Expr left, Expr right)

Method Summary

Modifier and Type	Method and Description
boolean	evalBoolean(org.w3c.dom.Node node, ExprEnvironment env) Evaluates the expression as a boolean.
double	evalNumber(org.w3c.dom.Node node, ExprEnvironment env) Evaluates the expression as a number.
java.lang.Object	evalObject(org.w3c.dom.Node node, ExprEnvironment env) Evaluates the expression as a object.
java.lang.String	evalString(org.w3c.dom.Node node, ExprEnvironment env) Evaluates the expression as a string.
boolean	isBoolean() true if the expression prefers to return a boolean.
java.lang.String	toString()

Methods inherited from class com.caucho.xpath.Expr

addParam, addVar, evalBoolean, evalNodeSet, evalNodeSet, evalNumber, evalObject, evalString, evalString, evalString, evalVar, getListContext, isNodeSet, isNumber, isString, setListContext, setVar, stringToNumber, toBoolean, toDouble, toNode, toNodeList, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

BooleanExpr

public BooleanExpr(int code,
                   Expr left,
                   Expr right)

BooleanExpr

public BooleanExpr(int code,
                   Expr expr)

BooleanExpr

public BooleanExpr(boolean value)

BooleanExpr

public BooleanExpr(int code,
                   java.util.ArrayList args)

Method Detail

isBoolean

public boolean isBoolean()

Description copied from class: Expr

true if the expression prefers to return a boolean.

Overrides:

isBoolean in class Expr

evalBoolean

public boolean evalBoolean(org.w3c.dom.Node node,
                           ExprEnvironment env)
                    throws XPathException

Evaluates the expression as a boolean.

Specified by:

evalBoolean in class Expr

Parameters:

node - current node

env - the environment

Returns:

the boolean representation

Throws:

XPathException

evalNumber

public double evalNumber(org.w3c.dom.Node node,
                         ExprEnvironment env)
                  throws XPathException

Evaluates the expression as a number.

Specified by:

evalNumber in class Expr

Parameters:

node - current node

env - the environment

Returns:

the numeric representation

Throws:

XPathException

evalString

public java.lang.String evalString(org.w3c.dom.Node node,
                                   ExprEnvironment env)
                            throws XPathException

Evaluates the expression as a string.

Specified by:

evalString in class Expr

Parameters:

node - current node

env - the environment

Returns:

the string representation

Throws:

XPathException

evalObject

public java.lang.Object evalObject(org.w3c.dom.Node node,
                                   ExprEnvironment env)
                            throws XPathException

Evaluates the expression as a object.

Specified by:

evalObject in class Expr

Parameters:

node - current node

env - the environment

Returns:

the object representation

Throws:

XPathException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object