org.mule.expression

Class MuleExpressionEvaluator

java.lang.Object

org.mule.expression.MuleExpressionEvaluator

All Implemented Interfaces:

MuleContextAware, ExpressionEvaluator, NamedObject

Deprecated.

MuleExpressionEvaluator is a wrapper of the default expression evaluators which ends up redirecting to the DefaultExpressionManager evaluate method. It has been deprecated since it only provides one more way to accomplish the same result. Instead use the default expression evaluators, for example: #[mule:message.headers(foo, bar)] - replaced by #[headers:foo,bar] #[mule:message.attachments-list(attach1, attach2*)] - replaced by #[attachments-list:attach1,attach2*] #[mule:context.serviceName] - replaced by #[context:serviceName] Check the Expressions configuration reference for more examples of the default expression evaluators syntax.

@Deprecated
public class MuleExpressionEvaluator
extends Object
implements ExpressionEvaluator, MuleContextAware

This evaluator provide a powerful expression language for querying mule information at runtime. It provides a unified language for querying message properties, attachments payload, Mule context information such as the current service or endpoint and access to the registry. Here are some examples: #[mule:message.headers(foo, bar)] - retrieves two headers 'foo' and 'bar' and returns a Map. #[mule:message.attachments-list(attach1, attach2*)] - retrieves two named attachments in a List. The star on 'attach2' indicates that it is optional #[mule:message.headers(all)] - retrieves all headers and returns as a Map. #[mule:message.payload(org.dom4j.Document)] - return the payload and convert it to a org.dom4j.Document. #[mule:message.correlationId] - return the the correlationId on the message #[mule:message.map-payload(foo)] - expects a Map payload object and will retrive a property 'foo' from the map. #[mule.context.serviceName] - returns the current service Name #[mule.context.modelName] - returns the current model Name #[mule.context.workingDir] - returns the working Directory #[mule.context.serverId] - returns the current server ID #[mule.registry.apple] - returns an object called 'apple' from the registry #[mule.registry.apple*] - returns an object called 'apple' from the registry but is optional #[mule.registry.apple.washed] - returns the property 'washed on an object called 'apple' in the registry

Field Summary

Fields

Modifier and Type	Field and Description
static String	NAME Deprecated.

Constructor Summary

Constructors

Constructor and Description
MuleExpressionEvaluator() Deprecated.

Method Summary

Methods

Modifier and Type	Method and Description
Object	evaluate(String expression, MuleMessage message) Deprecated. Extracts a single property from the message
TypedValue	evaluateTyped(String expression, MuleMessage message) Deprecated. Extracts a single typed property from the message
protected ExpressionConfig	getExpressionConfig(String eval, String expression) Deprecated.
String	getName() Deprecated. Gets the name of the object
void	setMuleContext(MuleContext context) Deprecated.

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final String NAME

Deprecated.

See Also:

Constant Field Values

Constructor Detail

MuleExpressionEvaluator

public MuleExpressionEvaluator()

Deprecated.

Method Detail

setMuleContext

public void setMuleContext(MuleContext context)

Deprecated.

Specified by:

setMuleContext in interface MuleContextAware

evaluate

public Object evaluate(String expression,
              MuleMessage message)

Deprecated.

Description copied from interface: ExpressionEvaluator

Extracts a single property from the message

Specified by:

evaluate in interface ExpressionEvaluator

Parameters:

expression - the property expression or expression

message - the message to extract from

Returns:

the result of the extraction or null if the property was not found

evaluateTyped

public TypedValue evaluateTyped(String expression,
                       MuleMessage message)

Deprecated.

Description copied from interface: ExpressionEvaluator

Extracts a single typed property from the message

Specified by:

evaluateTyped in interface ExpressionEvaluator

Parameters:

expression - the property expression or expression

message - the message to extract from

Returns:

a no null data type for the extracted value

getExpressionConfig

protected ExpressionConfig getExpressionConfig(String eval,
                                   String expression)

Deprecated.

getName

public String getName()

Deprecated.

Description copied from interface: NamedObject

Gets the name of the object

Specified by:

getName in interface NamedObject

Returns:

the name of the object