org.mule.runtime.core.el

Class DataWeaveExpressionLanguageAdaptor

java.lang.Object

org.mule.runtime.core.el.DataWeaveExpressionLanguageAdaptor

All Implemented Interfaces:

ExpressionLanguageAdaptor, ExtendedExpressionLanguageAdaptor

public class DataWeaveExpressionLanguageAdaptor
extends Object
implements ExtendedExpressionLanguageAdaptor

Field Summary

Fields

Modifier and Type	Field and Description
static String	APP
static String	ATTRIBUTES
static String	CORRELATION_ID
static String	DATA_TYPE
static String	ERROR
static String	FLOW
static String	ID
static String	MULE
static String	PARAMETERS
static String	PAYLOAD
static String	PROPERTIES
static String	SERVER
static String	VARIABLES

Constructor Summary

Constructors

Constructor and Description
DataWeaveExpressionLanguageAdaptor(MuleContext muleContext)

Method Summary

Modifier and Type	Method and Description
void	addGlobalBindings(org.mule.runtime.api.el.BindingContext bindingContext) Registers the given BindingContext as global.
void	enrich(String expression, Event event, Event.Builder eventBuilder, FlowConstruct flowConstruct, Object object) Enriches an event.
void	enrich(String expression, Event event, Event.Builder eventBuilder, FlowConstruct flowConstruct, org.mule.runtime.api.metadata.TypedValue value) Enriches an event using a typed value.
org.mule.runtime.api.metadata.TypedValue	evaluate(String expression, org.mule.runtime.api.metadata.DataType expectedOutputType, Event event, org.mule.runtime.api.el.BindingContext context) Evaluates an expression according to a given BindingContext and outputs .
org.mule.runtime.api.metadata.TypedValue	evaluate(String expression, org.mule.runtime.api.metadata.DataType expectedOutputType, Event event, FlowConstruct flowConstruct, org.mule.runtime.api.el.BindingContext context, boolean failOnNull) Evaluates an expression according to a given BindingContext, an Event and a FlowConstruct.
org.mule.runtime.api.metadata.TypedValue	evaluate(String expression, Event event, org.mule.runtime.api.el.BindingContext context) Evaluates an expression according to a given BindingContext.
org.mule.runtime.api.metadata.TypedValue	evaluate(String expression, Event event, Event.Builder eventBuilder, FlowConstruct flowConstruct, org.mule.runtime.api.el.BindingContext context) Execute the expression returning the result.
org.mule.runtime.api.metadata.TypedValue	evaluate(String expression, Event event, FlowConstruct flowConstruct, org.mule.runtime.api.el.BindingContext bindingContext) Evaluates an expression according to a given BindingContext, an Event and a FlowConstruct.
Iterator<org.mule.runtime.api.metadata.TypedValue<?>>	split(String expression, Event event, org.mule.runtime.api.el.BindingContext bindingContext) Splits using the specified expression and group it with the batch size.
Iterator<org.mule.runtime.api.metadata.TypedValue<?>>	split(String expression, Event event, FlowConstruct flowConstruct, org.mule.runtime.api.el.BindingContext bindingContext) Splits using the specified expression and group it with the batch size.
org.mule.runtime.api.el.ValidationResult	validate(String expression) Verifies whether an expression is valid or not syntactically.

Methods inherited from class java.lang.Object

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

Field Detail

PAYLOAD

public static final String PAYLOAD

See Also:

Constant Field Values

DATA_TYPE

public static final String DATA_TYPE

See Also:

Constant Field Values

ATTRIBUTES

public static final String ATTRIBUTES

See Also:

Constant Field Values

ERROR

public static final String ERROR

See Also:

Constant Field Values

ID

public static final String ID

See Also:

Constant Field Values

CORRELATION_ID

public static final String CORRELATION_ID

See Also:

Constant Field Values

VARIABLES

public static final String VARIABLES

See Also:

Constant Field Values

PROPERTIES

public static final String PROPERTIES

See Also:

Constant Field Values

PARAMETERS

public static final String PARAMETERS

See Also:

Constant Field Values

FLOW

public static final String FLOW

See Also:

Constant Field Values

SERVER

public static final String SERVER

See Also:

Constant Field Values

MULE

public static final String MULE

See Also:

Constant Field Values

APP

public static final String APP

See Also:

Constant Field Values

Constructor Detail

DataWeaveExpressionLanguageAdaptor

@Inject
public DataWeaveExpressionLanguageAdaptor(MuleContext muleContext)

Method Detail

addGlobalBindings

public void addGlobalBindings(org.mule.runtime.api.el.BindingContext bindingContext)

Registers the given BindingContext as global.

Specified by:

addGlobalBindings in interface ExpressionLanguageAdaptor

Parameters:

bindingContext - the context to register

evaluate

public org.mule.runtime.api.metadata.TypedValue evaluate(String expression,
                                                         Event event,
                                                         org.mule.runtime.api.el.BindingContext context)

Description copied from interface: ExpressionLanguageAdaptor

Evaluates an expression according to a given BindingContext.

Specified by:

evaluate in interface ExpressionLanguageAdaptor

Parameters:

expression - the expression to be executed

event - the current event being processed

Returns:

the result of execution of the expression.

evaluate

public org.mule.runtime.api.metadata.TypedValue evaluate(String expression,
                                                         org.mule.runtime.api.metadata.DataType expectedOutputType,
                                                         Event event,
                                                         org.mule.runtime.api.el.BindingContext context)
                                                  throws ExpressionRuntimeException

Description copied from interface: ExpressionLanguageAdaptor

Evaluates an expression according to a given BindingContext and outputs .

Specified by:

evaluate in interface ExpressionLanguageAdaptor

Parameters:

expression - the expression to be executed

expectedOutputType - the expected output type so that automatic conversion can be performed for the resulting value type.

event - the current event being processed

Returns:

the result of execution of the expression.

Throws:

ExpressionRuntimeException - if a problem occurs evaluating the expression

evaluate

public org.mule.runtime.api.metadata.TypedValue evaluate(String expression,
                                                         org.mule.runtime.api.metadata.DataType expectedOutputType,
                                                         Event event,
                                                         FlowConstruct flowConstruct,
                                                         org.mule.runtime.api.el.BindingContext context,
                                                         boolean failOnNull)
                                                  throws ExpressionRuntimeException

Description copied from interface: ExpressionLanguageAdaptor

Evaluates an expression according to a given BindingContext, an Event and a FlowConstruct.

Specified by:

evaluate in interface ExpressionLanguageAdaptor

Parameters:

expression - the expression to be executed

expectedOutputType - the expected output type so that automatic conversion can be performed for the resulting value type.

event - the current event being processed

flowConstruct - the flow where the event is being processed

context - the bindings to consider

failOnNull - indicates if should fail if the evaluation result is null

Returns:

the result of execution of the expression.

Throws:

ExpressionRuntimeException - if a problem occurs evaluating the expression

evaluate

public org.mule.runtime.api.metadata.TypedValue evaluate(String expression,
                                                         Event event,
                                                         FlowConstruct flowConstruct,
                                                         org.mule.runtime.api.el.BindingContext bindingContext)

Description copied from interface: ExpressionLanguageAdaptor

Evaluates an expression according to a given BindingContext, an Event and a FlowConstruct.

Specified by:

evaluate in interface ExpressionLanguageAdaptor

Parameters:

expression - the expression to be executed

event - the current event being processed

flowConstruct - the flow where the event is being processed

bindingContext - the bindings to consider

Returns:

the result of execution of the expression.

evaluate

public org.mule.runtime.api.metadata.TypedValue evaluate(String expression,
                                                         Event event,
                                                         Event.Builder eventBuilder,
                                                         FlowConstruct flowConstruct,
                                                         org.mule.runtime.api.el.BindingContext context)

Description copied from interface: ExtendedExpressionLanguageAdaptor

Execute the expression returning the result. The expression will be executed with MuleEvent context, meaning the expression language implementation should provided access to the message. A Map of variables can be provided that will be able to the expression when executed. Variable provided in the map will only be available if there are no conflict with context variables provided by the expression language implementation. This version of evaluate allows Event or InternalMessage mutation performed within the expression to be maintained post-evaluation via the use of a result Event.Builder which should be created from the original event before being passed and then used to construct the post-evaluation event.

Specified by:

evaluate in interface ExtendedExpressionLanguageAdaptor

Parameters:

expression - the expression to be executed

event - the current event being processed

eventBuilder - event builder instance used to mutate the current message or event.

flowConstruct - the flow where the event is being processed

context - the bindings to consider

Returns:

the result of execution of the expression.

validate

public org.mule.runtime.api.el.ValidationResult validate(String expression)

Description copied from interface: ExpressionLanguageAdaptor

Verifies whether an expression is valid or not syntactically.

Specified by:

validate in interface ExpressionLanguageAdaptor

Parameters:

expression - to be validated

Returns:

a ValidationResult indicating whether the validation was successful or not

split

public Iterator<org.mule.runtime.api.metadata.TypedValue<?>> split(String expression,
                                                                   Event event,
                                                                   FlowConstruct flowConstruct,
                                                                   org.mule.runtime.api.el.BindingContext bindingContext)
                                                            throws ExpressionRuntimeException

Description copied from interface: ExpressionLanguageAdaptor

Splits using the specified expression and group it with the batch size. If batch size is less or equals to zero then no batching is done. The expression should return a collection of elements.

Specified by:

split in interface ExpressionLanguageAdaptor

Parameters:

expression - the expression to be executed

event - the current event being processed

flowConstruct - the flow where the event is being processed

bindingContext - the bindings to consider

Returns:

the result of execution of the expression.

Throws:

ExpressionRuntimeException - if a problem occurs evaluating the expression

split

public Iterator<org.mule.runtime.api.metadata.TypedValue<?>> split(String expression,
                                                                   Event event,
                                                                   org.mule.runtime.api.el.BindingContext bindingContext)
                                                            throws ExpressionRuntimeException

Description copied from interface: ExpressionLanguageAdaptor

Splits using the specified expression and group it with the batch size. If batch size is less or equals to zero then no batching is done. The expression should return a collection of elements.

Specified by:

split in interface ExpressionLanguageAdaptor

Parameters:

expression - the expression to be executed

event - the current event being processed

bindingContext - the bindings to consider

Returns:

the result of execution of the expression.

Throws:

ExpressionRuntimeException - if a problem occurs evaluating the expression

enrich

public void enrich(String expression,
                   Event event,
                   Event.Builder eventBuilder,
                   FlowConstruct flowConstruct,
                   Object object)

Description copied from interface: ExtendedExpressionLanguageAdaptor

Enriches an event. This version of enrich allows Event or InternalMessage mutation performed within the expression to be maintained post-evaluation via the use of a result Event.Builder which should be created from the original event before being passed and then used to construct the post-evaluation event.

Specified by:

enrich in interface ExtendedExpressionLanguageAdaptor

Parameters:

expression - a single expression i.e. header://foo that defines how the message should be enriched

event - The event to be enriched

eventBuilder - event builder instance used to mutate the current message or event.

flowConstruct - the flow where the event is being processed

object - The object used for enrichment

enrich

public void enrich(String expression,
                   Event event,
                   Event.Builder eventBuilder,
                   FlowConstruct flowConstruct,
                   org.mule.runtime.api.metadata.TypedValue value)

Description copied from interface: ExtendedExpressionLanguageAdaptor

Enriches an event using a typed value. This version of enrich allows Event or InternalMessage mutation performed within the expression to be maintained post-evaluation via the use of a result Event.Builder which should be created from the original event before being passed and then used to construct the post-evaluation event.

Specified by:

enrich in interface ExtendedExpressionLanguageAdaptor

Parameters:

expression - a single expression i.e. header://foo that defines how the message should be enriched

event - The event to be enriched

eventBuilder - event builder instance used to mutate the current message or event.

flowConstruct - the flow where the event is being processed

value - The typed value used for enrichment