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 Vary, 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 IllegalArgumentException,
                            IllegalAccessException,
                            InvocationTargetException,
                            Exception

Throws:

IllegalArgumentException

IllegalAccessException

InvocationTargetException

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 Vary, 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