org.apache.camel.model.language
Class ExpressionDefinition

java.lang.Object
  org.apache.camel.model.language.ExpressionDefinition

All Implemented Interfaces:

Expression, Predicate

Direct Known Subclasses:

ConstantExpression, ELExpression, ExpressionClause, GroovyExpression, HeaderExpression, JavaScriptExpression, JXPathExpression, LanguageExpression, MethodCallExpression, MvelExpression, NamespaceAwareExpression, OgnlExpression, PhpExpression, PropertyExpression, PythonExpression, RefExpression, RubyExpression, SimpleExpression, SpELExpression, SqlExpression, TokenizerExpression

public class ExpressionDefinition
extends Object
implements Expression, Predicate

A useful base class for an expression

Version:

Constructor Summary

ExpressionDefinition()

ExpressionDefinition(Expression expression)

ExpressionDefinition(Predicate predicate)

ExpressionDefinition(String expression)

Method Summary

void	assertMatches(String text, Exchange exchange)
protected void	configureExpression(CamelContext camelContext, Expression expression)
protected void	configurePredicate(CamelContext camelContext, Predicate predicate)
Expression	createExpression(CamelContext camelContext)
Expression	createExpression(RouteContext routeContext)
Predicate	createPredicate(CamelContext camelContext)
Predicate	createPredicate(RouteContext routeContext)
Object	evaluate(Exchange exchange)
<T> T	evaluate(Exchange exchange, Class<T> type) Returns the value of the expression on the given exchange
String	getExpression()
ExpressionDefinition	getExpressionType()
Expression	getExpressionValue()
String	getId() Gets the value of the id property.
String	getLabel() Returns some descriptive text to describe this node
static String	getLabel(List<ExpressionDefinition> expressions)
String	getLanguage()
Predicate	getPredicate()
Boolean	getTrim()
boolean	isTrim()
boolean	matches(Exchange exchange) Evaluates the predicate on the message exchange and returns true if this exchange matches the predicate
void	setExpression(String expression)
protected void	setExpressionType(ExpressionDefinition expressionType) Allows derived classes to set a lazily created expressionType instance such as if using the ExpressionClause
protected void	setExpressionValue(Expression expressionValue)
void	setId(String value) Sets the value of the id property.
protected void	setProperty(Object bean, String name, Object value) Sets a named property on the object instance using introspection
void	setTrim(Boolean trim)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionDefinition

public ExpressionDefinition()

ExpressionDefinition

public ExpressionDefinition(String expression)

ExpressionDefinition

public ExpressionDefinition(Predicate predicate)

ExpressionDefinition

public ExpressionDefinition(Expression expression)

Method Detail

getLabel

public static String getLabel(List<ExpressionDefinition> expressions)

toString

public String toString()

Overrides:

toString in class Object

evaluate

public Object evaluate(Exchange exchange)

evaluate

public <T> T evaluate(Exchange exchange,
                      Class<T> type)

Description copied from interface: Expression

Returns the value of the expression on the given exchange

Specified by:

evaluate in interface Expression

Parameters:

exchange - the message exchange on which to evaluate the expression

type - the expected type of the evaluation result

Returns:

the value of the expression

assertMatches

public void assertMatches(String text,
                          Exchange exchange)
                   throws AssertionError

Throws:

AssertionError

matches

public boolean matches(Exchange exchange)

Description copied from interface: Predicate

Evaluates the predicate on the message exchange and returns true if this exchange matches the predicate

Specified by:

matches in interface Predicate

Parameters:

exchange - the message exchange

Returns:

true if the predicate matches

getLanguage

public String getLanguage()

createPredicate

public final Predicate createPredicate(RouteContext routeContext)

createPredicate

public Predicate createPredicate(CamelContext camelContext)

createExpression

public final Expression createExpression(RouteContext routeContext)

createExpression

public Expression createExpression(CamelContext camelContext)

getExpression

public String getExpression()

setExpression

@Required
public void setExpression(String expression)

getId

public String getId()

Gets the value of the id property.

setId

public void setId(String value)

Sets the value of the id property.

getPredicate

public Predicate getPredicate()

getExpressionValue

public Expression getExpressionValue()

setExpressionValue

protected void setExpressionValue(Expression expressionValue)

getExpressionType

public ExpressionDefinition getExpressionType()

getTrim

public Boolean getTrim()

setTrim

public void setTrim(Boolean trim)

isTrim

public boolean isTrim()

getLabel

public String getLabel()

Returns some descriptive text to describe this node

setExpressionType

protected void setExpressionType(ExpressionDefinition expressionType)

Allows derived classes to set a lazily created expressionType instance such as if using the ExpressionClause

configurePredicate

protected void configurePredicate(CamelContext camelContext,
                                  Predicate predicate)

configureExpression

protected void configureExpression(CamelContext camelContext,
                                   Expression expression)

setProperty

protected void setProperty(Object bean,
                           String name,
                           Object value)

Sets a named property on the object instance using introspection