org.mule.expression
Class ExpressionUtils

java.lang.Object
  org.mule.expression.ExpressionUtils

public final class ExpressionUtils
extends Object

Used by the different header expression evaluators to read message properties, honuouring scope and return type

Method Summary

static Object	getProperty(String expression, PropertyScope scope, MuleMessage msg) Gets a property or map/list of properties specified by an expression supporting multiple return types as well as all and optional modifiers.
static <T> T	getProperty(String expression, PropertyScope scope, MuleMessage msg, Class<T> type) Gets a property or map/list of properties specific by an expression supporting multiple return types as well as all and optional modifiers
protected static <T> T	getPropertyInternal(String expression, PropertyScope scope, boolean parseScope, MuleMessage msg, Class<T> type) Obtains a property or map/list of properties from a message using an expression that specifies which property or properties to evaluate.
static Object	getPropertyWithScope(String expression, MuleMessage msg) Gets a property or map/list of properties specific by an expression supporting multiple return types as well as all and optional modifiers Handles scope-aware expressions like "#[header:INBOUND:foo]
static <T> T	getPropertyWithScope(String expression, MuleMessage msg, Class<T> type) Gets a property or map/list of properties specific by an expression supporting multiple return types as well as all and optional modifiers Handles scope-aware expressions like "#[header:INBOUND:foo]
protected static PropertyScope	getScope(String expression)

Methods inherited from class java.lang.Object

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

Method Detail

getPropertyWithScope

public static Object getPropertyWithScope(String expression,
                                          MuleMessage msg)

Gets a property or map/list of properties specific by an expression supporting multiple return types as well as all and optional modifiers Handles scope-aware expressions like "#[header:INBOUND:foo]

Parameters:

expression - the header name to evaluate. this can be prefixed with a message scope such as INBOUND, OUTBOUND or INVOCATION scope. If no scope is defined the default scope is OUTBOUND

msg - the message to evaluate on

getPropertyWithScope

public static <T> T getPropertyWithScope(String expression,
                                         MuleMessage msg,
                                         Class<T> type)

Gets a property or map/list of properties specific by an expression supporting multiple return types as well as all and optional modifiers Handles scope-aware expressions like "#[header:INBOUND:foo]

Parameters:

expression - the header name to evaluate. this can be prefixed with a message scope such as INBOUND, OUTBOUND or INVOCATION scope. If no scope is defined the default scope is OUTBOUND

msg - the message to evaluate on

type - the expected return type for this evaluation

Returns:

an object of type 'type' corresponding to the message header requested or null if the header was not on the message in the specified scope

getProperty

public static Object getProperty(String expression,
                                 PropertyScope scope,
                                 MuleMessage msg)

Gets a property or map/list of properties specified by an expression supporting multiple return types as well as all and optional modifiers.

getProperty

public static <T> T getProperty(String expression,
                                PropertyScope scope,
                                MuleMessage msg,
                                Class<T> type)

Gets a property or map/list of properties specific by an expression supporting multiple return types as well as all and optional modifiers

Parameters:

msg - the message to evaluate on

type - the expected return type for this evaluation

Returns:

an object of type 'type' corresponding to the message header requested or null if the header was not on the message in the specified scope

getPropertyInternal

protected static <T> T getPropertyInternal(String expression,
                                           PropertyScope scope,
                                           boolean parseScope,
                                           MuleMessage msg,
                                           Class<T> type)

Obtains a property or map/list of properties from a message using an expression that specifies which property or properties to evaluate. This method can be used default scope

Parameters:

expression - the expression used to evaluator the message

scope - the scope to be used when obtaining a property. This is the default if parseScopes is true.

parseScope - should scope we parsed from expression string. When true the scope acts as a default.

msg - the message to be evaluated

type - return type expected

Returns:

property or list/map of evaluated property values

getScope

protected static PropertyScope getScope(String expression)