com.caucho.xpath.expr

Class IdExpr

java.lang.Object

com.caucho.xpath.Expr

com.caucho.xpath.expr.IdExpr

public class IdExpr
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
IdExpr(java.util.ArrayList<Expr> args)

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) The string value of the id expression is just the list of nodes.
java.lang.String	evalString(org.w3c.dom.Node node, ExprEnvironment env) The string value of the id expression is just the text value of the first node.
boolean	isNodeSet() true if the expression prefers to return a node set.
java.lang.String	toString()

Methods inherited from class com.caucho.xpath.Expr

addParam, addVar, evalBoolean, evalNodeSet, evalNodeSet, evalNumber, evalObject, evalString, evalString, evalString, evalVar, getListContext, isBoolean, 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

IdExpr

public IdExpr(java.util.ArrayList<Expr> args)

Method Detail

isNodeSet

public boolean isNodeSet()

Description copied from class: Expr

true if the expression prefers to return a node set.

Overrides:

isNodeSet in class Expr

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 - the current node

env - the variable environment.

Returns:

the number representation of id

Throws:

XPathException

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 - the current node

env - the variable environment.

Returns:

true if the node exists

Throws:

XPathException

evalString

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

The string value of the id expression is just the text value of the first node.

Specified by:

evalString in class Expr

Parameters:

node - the current node

env - the variable environment.

Returns:

true if the node exists

Throws:

XPathException

evalObject

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

The string value of the id expression is just the list of nodes.

Specified by:

evalObject in class Expr

Parameters:

node - the current node

env - the variable environment.

Returns:

true if the node exists

Throws:

XPathException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object