com.caucho.xpath.expr
Class ObjectExpr

java.lang.Object
  com.caucho.xpath.Expr
      com.caucho.xpath.expr.ObjectExpr

public class ObjectExpr
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

ObjectExpr(int code, java.util.ArrayList args)

ObjectExpr(int code, java.lang.String name)

Method Summary

boolean	evalBoolean(org.w3c.dom.Node node, ExprEnvironment env) Evaluates the expression as a boolean.
NodeIterator	evalNodeSet(org.w3c.dom.Node node, ExprEnvironment env) Evaluates the expression as a node set.
double	evalNumber(org.w3c.dom.Node node, ExprEnvironment env) Evaluates the expression as number.
java.lang.Object	evalObject(org.w3c.dom.Node node, ExprEnvironment env) Evaluates the expression as an object.
java.lang.String	evalString(org.w3c.dom.Node node, ExprEnvironment env) Evaluates the expression as string.
boolean	isNodeSet() Returns true if the expression evaluates to a node-set.
boolean	isString() Returns true if the expression evaluates to a node-set.
protected AbstractPattern	toNodeList() Convert from an expression to a pattern.
java.lang.String	toString()

Methods inherited from class com.caucho.xpath.Expr

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectExpr

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

ObjectExpr

public ObjectExpr(int code,
                  java.lang.String name)

Method Detail

isNodeSet

public boolean isNodeSet()

Returns true if the expression evaluates to a node-set.

Overrides:

isNodeSet in class Expr

isString

public boolean isString()

Returns true if the expression evaluates to a node-set.

Overrides:

isString 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 value

Throws:

XPathException

evalNumber

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

Evaluates the expression as number.

Specified by:

evalNumber in class Expr

Parameters:

node - current node

env - the environment

Returns:

the numeric value.

Throws:

XPathException

evalString

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

Evaluates the expression as 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 an object.

Specified by:

evalObject in class Expr

Parameters:

node - current node

env - the environment

Returns:

the object representation

Throws:

XPathException

evalNodeSet

public NodeIterator evalNodeSet(org.w3c.dom.Node node,
                                ExprEnvironment env)
                         throws XPathException

Evaluates the expression as a node set.

Overrides:

evalNodeSet in class Expr

Parameters:

node - current node

env - the variable environment

Returns:

the value as a node iterator.

Throws:

XPathException

toNodeList

protected AbstractPattern toNodeList()

Convert from an expression to a pattern.

Overrides:

toNodeList in class Expr

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object