Uses of Interface
org.apache.commons.jelly.expression.Expression

Packages that use Expression

Package	Description
org.apache.commons.jelly	This package contains the main jelly API classes.
org.apache.commons.jelly.expression	Implementations of the Expression classes using commons-jexl.
org.apache.commons.jelly.expression.jexl	Expressions used to turn the tag attribute values into compiled expression objects for languages such as Jexl, XPath, Velocity, beanshell, Rhino etc.
org.apache.commons.jelly.expression.xpath
org.apache.commons.jelly.impl	Core implementation classes for Jelly.
org.apache.commons.jelly.parser	Jelly parsers both XML syntax and non-XML syntaxes are supported.
org.apache.commons.jelly.tags.core	The core Tags from the JSTL plus Jelly extensions.

Uses of Expression in org.apache.commons.jelly

Methods in org.apache.commons.jelly that return Expression

Modifier and Type	Method	Description
Expression	TagLibrary.createExpression(ExpressionFactory factory, TagScript tagScript, String attributeName, String attributeValue)	Allows taglibs to use their own expression evaluation mechanism

Uses of Expression in org.apache.commons.jelly.expression

Classes in org.apache.commons.jelly.expression that implement Expression

Modifier and Type	Class	Description
class	CompositeExpression	CompositeExpression is a Composite expression made up of several Expression objects which are concatenated into a single String.
class	ConstantExpression	ConstantExpression represents a constant expression.
class	ExpressionSupport	ExpressionSupport an abstract base class for Expression implementations which provides default implementations of some of the typesafe evaluation methods.

Fields in org.apache.commons.jelly.expression declared as Expression

Modifier and Type	Field	Description
static final Expression	Expression.NULL	Singleton instance that represents the expression that evaluates to null.

Methods in org.apache.commons.jelly.expression that return Expression

Modifier and Type	Method	Description
Expression	ExpressionFactory.createExpression(String text)	Creates a new expression for the given text
static Expression	CompositeExpression.parse(String text, ExpressionFactory factory)	Parses the given String to be either a ConstantExpression, an Expression denoted as "${foo}" or some String with embedded expressions such as "abc${something}def${else}xyz" which results in a CompositeExpression being returned.

Methods in org.apache.commons.jelly.expression with parameters of type Expression

Modifier and Type	Method	Description
void	CompositeExpression.addExpression(Expression expression)	Adds a new expression to the end of the expression list

Uses of Expression in org.apache.commons.jelly.expression.jexl

Classes in org.apache.commons.jelly.expression.jexl that implement Expression

Modifier and Type	Class	Description
class	JexlExpression	Represents a Jexl expression which fully supports the Expression Language in JSTL and JSP along with some extra features like object method invocation.

Methods in org.apache.commons.jelly.expression.jexl that return Expression

Modifier and Type	Method	Description
Expression	JexlExpressionFactory.createExpression(String text)

Uses of Expression in org.apache.commons.jelly.expression.xpath

Classes in org.apache.commons.jelly.expression.xpath that implement Expression

Modifier and Type	Class	Description
class	XPathExpression	An expression which returns an XPath object.

Constructors in org.apache.commons.jelly.expression.xpath with parameters of type Expression

Modifier	Constructor	Description
	XPathExpression(String text, Expression xpathExpr, TagScript tagScript)

Uses of Expression in org.apache.commons.jelly.impl

Fields in org.apache.commons.jelly.impl declared as Expression

Modifier and Type	Field	Description
Expression	ExpressionAttribute.exp

Methods in org.apache.commons.jelly.impl that return Expression

Modifier and Type	Method	Description
protected Expression	TagScript.getAttribute(String name)	Retrieves the expression of the given attribute name.
Expression	Attribute.getDefaultValue()	Returns the defaultValue.
Expression	ExpressionScript.getExpression()

Methods in org.apache.commons.jelly.impl with parameters of type Expression

Modifier and Type	Method	Description
void	TagScript.addAttribute(String name, String prefix, String nsURI, Expression expression)	Add an initialization attribute for the tag.
void	TagScript.addAttribute(String name, Expression expression)	Add an initialization attribute for the tag.
void	Attribute.setDefaultValue(Expression defaultValue)	Sets the defaultValue.
void	ExpressionScript.setExpression(Expression expression)	Sets the expression evaluated as a String and output by this script

Constructors in org.apache.commons.jelly.impl with parameters of type Expression

Modifier	Constructor	Description
	ExpressionAttribute(String name, String prefix, String nsURI, Expression exp)
	ExpressionAttribute(String name, Expression exp)
	ExpressionScript(Expression expression)

Uses of Expression in org.apache.commons.jelly.parser

Classes in org.apache.commons.jelly.parser that implement Expression

Modifier and Type	Class	Description
class	EscapingExpression	Expression that escapes output so that the text can appear in the PCDATA portion of XML.

Methods in org.apache.commons.jelly.parser that return Expression

Modifier and Type	Method	Description
protected Expression	XMLParser.createConstantExpression(String tagName, String attributeName, String attributeValue)
protected Expression	XMLParser.createEscapingExpression(Expression expression)

Methods in org.apache.commons.jelly.parser with parameters of type Expression

Modifier and Type	Method	Description
protected void	XMLParser.addExpressionScript(ScriptBlock script, Expression expression)	Adds the given Expression object to the current Script.
protected Expression	XMLParser.createEscapingExpression(Expression expression)

Constructors in org.apache.commons.jelly.parser with parameters of type Expression

Modifier	Constructor	Description
	EscapingExpression(Expression base)

Uses of Expression in org.apache.commons.jelly.tags.core

Methods in org.apache.commons.jelly.tags.core with parameters of type Expression

Modifier and Type	Method	Description
void	SetTag.setDefaultValue(Expression defaultValue)	Deprecated. Sets the default value to be used if the value exprsesion results in a null value or blank String
void	ForEachTag.setItems(Expression items)	Sets the expression used to iterate over.
void	SwitchTag.setOn(Expression on)	Sets the value to switch on.
void	BreakTag.setTest(Expression test)	Sets the Jelly expression to evaluate (optional).
void	IfTag.setTest(Expression test)	Deprecated. Sets the Jelly expression to evaluate.
void	WhenTag.setTest(Expression test)	Sets the expression to evaluate.
void	WhileTag.setTest(Expression e)	Setter for the expression
void	CaseTag.setValue(Expression value)
void	ExprTag.setValue(Expression value)	Sets the Jexl expression to evaluate.
void	SetTag.setValue(Expression value)	Deprecated. Sets the expression to evaluate.
void	RemoveTag.setVar(Expression var)	Sets the name of the variable which will be removed by this tag..