Java Doc for RequestCache.java in  » Ajax » Laszlo-4.0.10 » org » openlaszlo » cache » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Ajax » Laszlo 4.0.10 » org.openlaszlo.cache   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.openlaszlo.cache.Cache       org.openlaszlo.cache.RequestCache All known Subclasses:   org.openlaszlo.cache.MediaCache,  org.openlaszlo.cache.DataCache,  org.openlaszlo.cache.XMLDataCache, RequestCache abstract public class RequestCache extends Cache (Code) A class for maintaining a disk-backed cache of HTTP requests. The main entry point is the getAsSWF method. Given a specific HTTP request and response, the item returns an InputStream for a possibly-converted SWF that represents the item requested. This method may return NULL, indicating that a special HTTP status code has been stuck in the response. author:    Eric Bloch Field Summary protected  Converter mConverter      Constructor Summary public   RequestCache(String name, File cacheDirectory, Converter converter, Properties props)      Creates a new RequestCache instance. Method Summary public  void getAsSWF(String app, HttpServletRequest req, HttpServletResponse res, DataSource dataSource)      Using the given datasource from the incoming request, get the data if it's out of data from the cache, convert it to SWF, and write it out to the given response. public  Converter getConverter()       InputStream getItemStreamAsSWF(Item item, String app, HttpServletRequest req, HttpServletResponse res, DataSource dataSource)      Get the item if it's been updated since the given time. public  Serializable getKey(HttpServletRequest req)      public  boolean isCacheable(HttpServletRequest req)      true if the request is cacheable.If response headers are to be sentback, then the request is not cacheable on the server.If req headers are sent, then the request is not cacheableon the server.If the cache parameter is present and set to true, the request is cacheable. Field Detail mConverter protected Converter mConverter(Code) converter Constructor Detail RequestCache public RequestCache(String name, File cacheDirectory, Converter converter, Properties props) throws IOException(Code) Creates a new RequestCache instance. Parameters:   name - Parameters:   cacheDirectory - a File naming a directorywhere cache files should be kept Parameters:   converter - Parameters:   props - Method Detail getAsSWF public void getAsSWF(String app, HttpServletRequest req, HttpServletResponse res, DataSource dataSource) throws IOException, DataSourceException, ConversionException(Code) Using the given datasource from the incoming request, get the data if it's out of data from the cache, convert it to SWF, and write it out to the given response. Parameters:   app - absolute path name to app Parameters:   req - servlet request that triggered the get Parameters:   res - servlet response to fill out Parameters:   dataSource - source of data throws:   IOException - if there's an IOException while creatingthe response throws:   DataSourceException - if there's an error getting the data throws:   ConversionException - if there's an error convering the data getConverter public Converter getConverter()(Code) Return the converter for this cache getItemStreamAsSWF InputStream getItemStreamAsSWF(Item item, String app, HttpServletRequest req, HttpServletResponse res, DataSource dataSource) throws IOException, DataSourceException, ConversionException(Code) Get the item if it's been updated since the given time. Item must be locked when you call this. null if the url hasn't been modified since the given timeor an input stream that can be used to read the item's contentas SWF. getKey public Serializable getKey(HttpServletRequest req) throws MalformedURLException(Code) a serializable cache key for the given request isCacheable public boolean isCacheable(HttpServletRequest req)(Code) true if the request is cacheable.If response headers are to be sentback, then the request is not cacheable on the server.If req headers are sent, then the request is not cacheableon the server.If the cache parameter is present and set to true, the request is cacheable. Otherwise it's not. Fields inherited from org.openlaszlo.cache.Cache final public String DEFAULT_DISK_MAX(Code)(Java Doc) final public String DEFAULT_MEM_ITEM_MAX(Code)(Java Doc) final public String DEFAULT_MEM_MAX(Code)(Java Doc) Methods inherited from org.openlaszlo.cache.Cache protected void afterCacheRead(Object metaData)(Code)(Java Doc) public synchronized boolean clearCache()(Code)(Java Doc) public synchronized void dumpXML(StringBuffer buf, String name, boolean details)(Code)(Java Doc) protected synchronized Item findItem(Serializable key, String enc, boolean doLockAndLeaveActive) throws IOException(Code)(Java Doc) public synchronized long getDiskSize()(Code)(Java Doc) protected synchronized Item getItem(Serializable key)(Code)(Java Doc) public synchronized long getMaxDiskSize()(Code)(Java Doc) public synchronized long getMaxMemSize()(Code)(Java Doc) public synchronized long getMemSize()(Code)(Java Doc) public synchronized void setMaxDiskSize(long size)(Code)(Java Doc) public synchronized void setMaxMemSize(long size)(Code)(Java Doc) protected synchronized void updateCache(Item item)(Code)(Java Doc) protected synchronized void updateCacheAndDeactivateItem(Item item)(Code)(Java Doc) public synchronized void updateMapsAndReckonItems(boolean clearAll)(Code)(Java Doc) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)