org.mule.module.json
Class JsonExpressionEvaluator
java.lang.Object
org.mule.module.json.JsonExpressionEvaluator
- All Implemented Interfaces:
- ExpressionEvaluator, NamedObject
- Direct Known Subclasses:
- JsonNodeExpressionEvaluator
public class JsonExpressionEvaluator
- extends Object
- implements ExpressionEvaluator
An expression evaluator to allow users to define json expressions in their mule configuration, i.e.
#[json:person/addresses[0]/postcode]
See the JsonData
object for mor information about the query syntax.
It is also possible to use this evaluator in ExpressionFilter
objects. For example
a filter could be defined as -
#[json:person/registered]
Where 'registered' is a boolean value. It is also possible to filter on the existence of a value i.e.
#[json:person/favouriteColour]
Which would return true if 'favouriteColour' has been set. This evaluator also dds two logic operators you can use
to create more sophisticated boolean expressions; equals and not equals -
#[json:person/favouriteColour = red]
or
#[json:person/favouriteColour != brown]
- See Also:
JsonData
Field Summary |
protected Log |
logger
logger used by this class |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
logger
protected final transient Log logger
- logger used by this class
JsonExpressionEvaluator
public JsonExpressionEvaluator()
evaluate
public Object evaluate(String expression,
MuleMessage message)
- Description copied from interface:
ExpressionEvaluator
- Extracts a single property from the message
- Specified by:
evaluate
in interface ExpressionEvaluator
- Parameters:
expression
- the property expression or expressionmessage
- the message to extract from
- Returns:
- the result of the extraction or null if the property was not found
extractResultFromNode
protected Object extractResultFromNode(org.codehaus.jackson.JsonNode result)
getName
public String getName()
- Description copied from interface:
NamedObject
- Gets the name of the object
- Specified by:
getName
in interface NamedObject
- Returns:
- the name of the object
Copyright © 2003-2012 MuleSoft, Inc.. All Rights Reserved.