DefaultHttpProviderMarshaler: Make it possible to extract the XML content from
the NMR.
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Key: SM-1307
URL: https://issues.apache.org/activemq/browse/SM-1307
Project: ServiceMix
Issue Type: Improvement
Components: servicemix-core, servicemix-http
Affects Versions: 3.2.1
Reporter: Tom Purcell
Attachments: servicemixRestSupport.tar.gz
The current implementation of DefaultHttpProviderMarshaler the it is possible
to construct the location URI by specifying an XPath
expression(locationURIExpression). Make it possible to extract the XML content
as well. In order to do this JAXPXPathExpression must change.
In the SMX JAXPXPathExpression class the evaluateXPath(Object object) method
calls the javax.xml.xpath.XPathExpression evaluate(object) method. There are
four implementations of that method in XPathExpression. The one being called in
the SMX JAXPXPathExpression class returns a String. This String contains the
VALUEs only, not the tags. This is great when you need a value to build a URL
but not when you need the actual XML. You need the NodeSet. Another version of
the XPathExpression evaluate method, evaluate(object, returnType), allows you
to control the return type by specifing one of the
javax.xml.xpath.XPathConstants but the SMX JAXPXPathExpression does not expose
a way to call it.
The attached file contains the following
An SVN diff of JAXPXPathExpression in which:
- Changed:
protected Object evaluateXPath(Object object) throws
XPathExpressionException
To:
protected Object evaluateXPath(Object object, QName returnType) throws
XPathExpressionException
- Added:
public Object evaluate(MessageExchange exchange, NormalizedMessage
message, QName returnType) throws MessagingException
- Changed:
public Object evaluate(MessageExchange exchange, NormalizedMessage
message) throws MessagingException
To call the new version above. It passes in XPathConstants.STRING as the
QName to provide backward compatibility.
The RestProviderMarshaler which:
- Extends DefaultHttpProviderMarshaler and makes use of the nes functionality
- Adds HttpStatus.SC_CREATED to the check for valid response codes in
handleResponse(MessageExchange exchange, SmxHttpExchange httpExchange). This is
to support valid responses to a RESTful POST call.
Below is a sample XBean config for the new http:provder:
<http:provider service="wile:wileRestService"
interfaceName="wileCreate"
endpoint="wileRestCreate"
marshaler="#createMarshaler"/>
<bean id="createMarshaler" class="com.jbi.marshal.RestProviderMarshaler">
<property name="locationURIExpression">
<bean
class="org.apache.servicemix.expression.JAXPStringXPathExpression">
<constructor-arg
value="concat('http://localhost:8080/wile-www/assetmanagement/assetservice/',/assetRequest/perspective)"/>
</bean>
</property>
<property name="method"
value="POST"/>
<property name="contentType"
value="application/x-www-form-urlencoded"/>
<property name="contentExpression">
<bean
class="org.apache.servicemix.expression.JAXPStringXPathExpression">
<constructor-arg value="//asset"/>
</bean>
</property>
</bean>
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