ch.ralscha.extdirectspring.util

Class ExtDirectSpringUtil

java.lang.Object

ch.ralscha.extdirectspring.util.ExtDirectSpringUtil

public final class ExtDirectSpringUtil
extends Object

Utility class

Field Summary

Fields

Modifier and Type	Field and Description
static Charset	UTF8_CHARSET

Method Summary

Methods

Modifier and Type	Method and Description
static void	addCacheHeaders(javax.servlet.http.HttpServletResponse response, String etag, Integer month) Adds Expires, ETag and Cache-Control response headers.
static boolean	equal(Object a, Object b) Checks if two objects are equal.
static String	getStackTrace(Throwable t) Converts a stacktrace into a String
static void	handleCacheableResponse(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, byte[] data, String contentType) Checks etag and sends back HTTP status 304 if not modified.
static Object	invoke(org.springframework.context.ApplicationContext context, String beanName, MethodInfo methodInfo, Object[] params) Invokes a method on a Spring managed bean.
static Object	invoke(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, Locale locale, org.springframework.context.ApplicationContext context, ExtDirectRequest directRequest, ParametersResolver parametersResolver)
static boolean	isMultipart(javax.servlet.http.HttpServletRequest request) Checks if the request is a multipart request

Methods inherited from class java.lang.Object

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

Field Detail

UTF8_CHARSET

public static final Charset UTF8_CHARSET

Method Detail

equal

public static boolean equal(Object a,
            Object b)

Checks if two objects are equal. Returns true if both objects are null

Parameters:

a - object one

b - object two

Returns:

true if objects are equal

isMultipart

public static boolean isMultipart(javax.servlet.http.HttpServletRequest request)

Checks if the request is a multipart request

Parameters:

request - the HTTP servlet request

Returns:

true if request is a Multipart request (file upload)

invoke

public static Object invoke(org.springframework.context.ApplicationContext context,
            String beanName,
            MethodInfo methodInfo,
            Object[] params)
                     throws IllegalArgumentException,
                            IllegalAccessException,
                            InvocationTargetException

Invokes a method on a Spring managed bean.

Parameters:

context - a Spring application context

beanName - the name of the bean

methodInfo - the methodInfo object

params - the parameters

Returns:

the result of the method invocation

Throws:

IllegalArgumentException - if there is no bean in the context

IllegalAccessException

InvocationTargetException

invoke

public static Object invoke(javax.servlet.http.HttpServletRequest request,
            javax.servlet.http.HttpServletResponse response,
            Locale locale,
            org.springframework.context.ApplicationContext context,
            ExtDirectRequest directRequest,
            ParametersResolver parametersResolver)
                     throws Exception

Throws:

Exception

getStackTrace

public static String getStackTrace(Throwable t)

Converts a stacktrace into a String

Parameters:

t - a Throwable

Returns:

the whole stacktrace in a String

addCacheHeaders

public static void addCacheHeaders(javax.servlet.http.HttpServletResponse response,
                   String etag,
                   Integer month)

Adds Expires, ETag and Cache-Control response headers.

Parameters:

response - the HTTP servlet response

etag - the calculated etag (md5) of the response

month - number of months the response can be cached. Added to the Expires and Cache-Control header. If null defaults to 6 months.

handleCacheableResponse

public static void handleCacheableResponse(javax.servlet.http.HttpServletRequest request,
                           javax.servlet.http.HttpServletResponse response,
                           byte[] data,
                           String contentType)
                                    throws IOException

Checks etag and sends back HTTP status 304 if not modified. If modified sets content type and content length, adds cache headers ( addCacheHeaders(HttpServletResponse, String, Integer)), writes the data into the ServletResponse.getOutputStream() and flushes it.

Parameters:

request - the HTTP servlet request

response - the HTTP servlet response

data - the response data

contentType - the content type of the data (i.e. "application/javascript;charset=UTF-8")

Throws:

IOException