org.kohsuke.stapler.jelly

Class DefaultScriptInvoker

java.lang.Object

org.kohsuke.stapler.jelly.DefaultScriptInvoker

All Implemented Interfaces:

org.apache.commons.jelly.XMLOutputFactory, ScriptInvoker

public class DefaultScriptInvoker
extends java.lang.Object
implements ScriptInvoker, org.apache.commons.jelly.XMLOutputFactory

Standard implementation of ScriptInvoker.

Author:

Kohsuke Kawaguchi

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	COMPRESS_BY_DEFAULT Whether gzip compression of the dynamic content is enabled by default or not.

Constructor Summary

Constructors

Constructor and Description
DefaultScriptInvoker()

Method Summary

Methods

Modifier and Type	Method and Description
protected org.apache.commons.jelly.JellyContext	createContext(StaplerRequest req, StaplerResponse rsp, org.apache.commons.jelly.Script script, java.lang.Object it)
protected java.io.OutputStream	createOutputStream(StaplerRequest req, StaplerResponse rsp, org.apache.commons.jelly.Script script, java.lang.Object it)
protected org.apache.commons.jelly.XMLOutput	createXMLOutput(StaplerRequest req, StaplerResponse rsp, org.apache.commons.jelly.Script script, java.lang.Object it)
org.apache.commons.jelly.XMLOutput	createXMLOutput(java.io.Writer writer, boolean escapeText)
protected void	exportVariables(StaplerRequest req, StaplerResponse rsp, org.apache.commons.jelly.Script script, java.lang.Object it, org.apache.commons.jelly.JellyContext context)
void	invokeScript(StaplerRequest req, StaplerResponse rsp, org.apache.commons.jelly.Script script, java.lang.Object it) Invokes the script and generates output to ServletResponse.getOutputStream().
void	invokeScript(StaplerRequest req, StaplerResponse rsp, org.apache.commons.jelly.Script script, java.lang.Object it, org.apache.commons.jelly.XMLOutput out) Invokes the script and generates output to the specified output

Methods inherited from class java.lang.Object

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

Field Detail

COMPRESS_BY_DEFAULT

public static boolean COMPRESS_BY_DEFAULT

Whether gzip compression of the dynamic content is enabled by default or not.

For non-trivial web applications, where the performance matters, it is normally a good trade-off to spend a bit of CPU cycles to compress data. This is because:

• CPU is already 1 or 2 order of magnitude faster than RAM and network.
• CPU is getting faster than any other components, such as RAM and network.
• Because of the TCP window slow start, on a large latency network, compression makes difference in the order of 100ms to 1sec to the completion of a request by saving multiple roundtrips.

Stuff rendered by Jelly is predominantly text, so the compression would work well.

See Also:

Latency Trumps All

Constructor Detail

DefaultScriptInvoker

public DefaultScriptInvoker()

Method Detail

invokeScript

public void invokeScript(StaplerRequest req,
                StaplerResponse rsp,
                org.apache.commons.jelly.Script script,
                java.lang.Object it)
                  throws java.io.IOException,
                         org.apache.commons.jelly.JellyTagException

Description copied from interface: ScriptInvoker

Invokes the script and generates output to ServletResponse.getOutputStream().

Specified by:

invokeScript in interface ScriptInvoker

Throws:

java.io.IOException

org.apache.commons.jelly.JellyTagException

invokeScript

public void invokeScript(StaplerRequest req,
                StaplerResponse rsp,
                org.apache.commons.jelly.Script script,
                java.lang.Object it,
                org.apache.commons.jelly.XMLOutput out)
                  throws java.io.IOException,
                         org.apache.commons.jelly.JellyTagException

Description copied from interface: ScriptInvoker

Invokes the script and generates output to the specified output

Specified by:

invokeScript in interface ScriptInvoker

Throws:

java.io.IOException

org.apache.commons.jelly.JellyTagException

createXMLOutput

protected org.apache.commons.jelly.XMLOutput createXMLOutput(StaplerRequest req,
                                                 StaplerResponse rsp,
                                                 org.apache.commons.jelly.Script script,
                                                 java.lang.Object it)
                                                      throws java.io.IOException

Throws:

java.io.IOException

createOutputStream

protected java.io.OutputStream createOutputStream(StaplerRequest req,
                                      StaplerResponse rsp,
                                      org.apache.commons.jelly.Script script,
                                      java.lang.Object it)
                                           throws java.io.IOException

Throws:

java.io.IOException

exportVariables

protected void exportVariables(StaplerRequest req,
                   StaplerResponse rsp,
                   org.apache.commons.jelly.Script script,
                   java.lang.Object it,
                   org.apache.commons.jelly.JellyContext context)

createContext

protected org.apache.commons.jelly.JellyContext createContext(StaplerRequest req,
                                                  StaplerResponse rsp,
                                                  org.apache.commons.jelly.Script script,
                                                  java.lang.Object it)

createXMLOutput

public org.apache.commons.jelly.XMLOutput createXMLOutput(java.io.Writer writer,
                                                 boolean escapeText)

Specified by:

createXMLOutput in interface org.apache.commons.jelly.XMLOutputFactory