com.jalios.rest.client
Class ClientUtil

java.lang.Object
  com.jalios.rest.client.ClientUtil

public class ClientUtil
extends Object

Utility functions (static public methods) used in Rest Clients.

Since:

JCMS-6.0

Author:

dissert

Constructor Summary

ClientUtil()

Method Summary

static void	addHttpHeader(org.restlet.data.Request request, String key, String value) Adds a header in a HTTP request represented by the request parameter.
static boolean	getBoolean(JcmsResource resource, String xpathExpression, boolean def) If the result of the XPath query is a boolean String, it is converted in Boolean.
static Date	getDate(JcmsResource resource, String xpathExpression, Date def) If the result of the XPath query is a Date as defined by the W3C Date Time format (eg 1999-01-01T14:07:00+01:00).
static org.jdom.Element	getFirstElement(JcmsResource resource, String xpathExpression) Utility functions to use XPath expression to introspect xml contained in entity boby of HTTP response
static long	getLong(JcmsResource resource, String xpathExpression, long def) If the result of the XPath query is a long representation String, it is converted as an long.
static List<?>	getNodeList(JcmsResource resource, String xpathExpression) Provide XPath feature : returns the list of Nodes in the xml in the entity body of the resource in first argument, with the xPathExpression in second argument.
static org.restlet.data.Preference<org.restlet.data.MediaType>	getPreferenceMediaType(org.restlet.data.MediaType mediaType)
static org.restlet.data.Request	getRequest(org.restlet.data.Reference resourceRef, org.restlet.data.Method method) Instanciate the request with the uri and the HTTP method.
static Object	getSingleNode(JcmsResource resource, String xpathExpression) Provide XPath feature : returns the first of the Nodes in the xml in the entity body of the resource in first argument, with the xPathExpression in second argument.
static String	getString(JcmsResource resource, String xpathExpression) Return the most pertinent String for the result of the XPath query in the body content of the given resource.
static void	setPreferedMediaType(org.restlet.data.Request request, org.restlet.data.MediaType[] mediaTypes) In a Restlet Request object, set the prefered MediaType

Methods inherited from class java.lang.Object

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

Constructor Detail

ClientUtil

public ClientUtil()

Method Detail

addHttpHeader

public static void addHttpHeader(org.restlet.data.Request request,
                                 String key,
                                 String value)

Adds a header in a HTTP request represented by the request parameter.

Parameters:

request - The Restlet object representing an HTTP request.

key - The name of the given HTTP header

value - The name for the given HTTP header

getRequest

public static org.restlet.data.Request getRequest(org.restlet.data.Reference resourceRef,
                                                  org.restlet.data.Method method)

Instanciate the request with the uri and the HTTP method.

Parameters:

resourceRef -

method -

Returns:

the Request object, with the URI and the HTTP method.

setPreferedMediaType

public static void setPreferedMediaType(org.restlet.data.Request request,
                                        org.restlet.data.MediaType[] mediaTypes)

In a Restlet Request object, set the prefered MediaType

Parameters:

request - The Restlet Request object

mediaTypes - The prefered media type

getPreferenceMediaType

public static org.restlet.data.Preference<org.restlet.data.MediaType> getPreferenceMediaType(org.restlet.data.MediaType mediaType)

getFirstElement

public static org.jdom.Element getFirstElement(JcmsResource resource,
                                               String xpathExpression)
                                        throws org.jdom.JDOMException

Utility functions to use XPath expression to introspect xml contained in entity boby of HTTP response

Parameters:

resource - the given resource get by a rest request

xpathExpression - an xpath expression to dig into the body content of the request

Returns:

the first element if the node as a result of the XPath xpression is an element

Throws:

org.jdom.JDOMException - if the XPath expression is invalid or its evaluation on the specified context failed.

getSingleNode

public static Object getSingleNode(JcmsResource resource,
                                   String xpathExpression)
                            throws org.jdom.JDOMException

Provide XPath feature : returns the first of the Nodes in the xml in the entity body of the resource in first argument, with the xPathExpression in second argument.

Parameters:

resource - the search is done into the entity body of this resource

xpathExpression - the XPath expression

Returns:

the list of selected item, which may be of types: Element, Attribute, Text, CDATA, Comment, ProcessingInstruction, Boolean, Double, String, or null if no item was selected.

Throws:

org.jdom.JDOMException - if the XPath expression is invalid or its evaluation on the specified context failed.

getNodeList

public static List<?> getNodeList(JcmsResource resource,
                                  String xpathExpression)
                           throws org.jdom.JDOMException

Provide XPath feature : returns the list of Nodes in the xml in the entity body of the resource in first argument, with the xPathExpression in second argument.

Parameters:

resource - the given resource get by a rest request

xpathExpression - the XPath expression

Returns:

the list of selected item, which may be of types: Element, Attribute, Text, CDATA, Comment, ProcessingInstruction, Boolean, Double, String, or null if no item was selected.

Throws:

org.jdom.JDOMException - if the XPath expression is invalid or its evaluation on the specified context failed.

getString

public static String getString(JcmsResource resource,
                               String xpathExpression)
                        throws org.jdom.JDOMException

Return the most pertinent String for the result of the XPath query in the body content of the given resource.

Parameters:

resource - the given resource get by a rest request

xpathExpression - an xpath expression to dig into the body content of the request

Returns:

the String found or null

Throws:

org.jdom.JDOMException - if the XPath expression is invalid or its evaluation on the specified context failed.

getBoolean

public static boolean getBoolean(JcmsResource resource,
                                 String xpathExpression,
                                 boolean def)

If the result of the XPath query is a boolean String, it is converted in Boolean. Otherwise, the default value is returned.

Parameters:

resource - the given resource get by a rest request

xpathExpression - an xpath expression to dig into the body content of the request

def - the default value

Returns:

the value associated to the string found or def.

getDate

public static Date getDate(JcmsResource resource,
                           String xpathExpression,
                           Date def)

If the result of the XPath query is a Date as defined by the W3C Date Time format (eg 1999-01-01T14:07:00+01:00).
For more details, see http://www.w3.org/TR/NOTE-datetime
, it is converted this Date. Otherwise, the default value is returned.

Parameters:

resource - the given resource get by a rest request

xpathExpression - an xpath expression to dig into the body content of the request

def - the default value

Returns:

the value associated to the string found or def.

getLong

public static long getLong(JcmsResource resource,
                           String xpathExpression,
                           long def)

If the result of the XPath query is a long representation String, it is converted as an long. Otherwise, the default value is returned.

Parameters:

resource - the given resource get by a rest request

xpathExpression - an xpath expression to dig into the body content of the request

def - the default value

Returns:

the value associated to the string found or def.