freemarker.ext.servlet

Class IncludePage

java.lang.Object

freemarker.ext.servlet.IncludePage

All Implemented Interfaces:

TemplateDirectiveModel, TemplateModel

public class IncludePage
extends java.lang.Object
implements TemplateDirectiveModel

A model that when invoked with a 'path' parameter will perform a servlet include. It also support an optional hash named 'params' which specifies request parameters for the include - its keys are strings, its values should be either strings or sequences of strings (for multiple valued parameters). A third optional parameter 'inherit_params' should be a boolean when specified, and it defaults to true when not specified. A value of true means that the include inherits the request parameters from the current request. In this case values in 'params' will get prepended to the existing values of parameters.

Field Summary

Fields inherited from interface freemarker.template.TemplateModel

NOTHING

Constructor Summary

Constructors

Constructor and Description
IncludePage(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)

Method Summary

Modifier and Type	Method and Description
void	execute(Environment env, java.util.Map params, TemplateModel[] loopVars, TemplateDirectiveBody body) Executes this user-defined directive; called by FreeMarker when the user-defined directive is called in the template.

Methods inherited from class java.lang.Object

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

Constructor Detail

IncludePage

public IncludePage(javax.servlet.http.HttpServletRequest request,
                   javax.servlet.http.HttpServletResponse response)

Method Detail

execute

public void execute(Environment env,
                    java.util.Map params,
                    TemplateModel[] loopVars,
                    TemplateDirectiveBody body)
             throws TemplateException,
                    java.io.IOException

Description copied from interface: TemplateDirectiveModel

Executes this user-defined directive; called by FreeMarker when the user-defined directive is called in the template.

This method should not throw RuntimeException, nor IOException that wasn't caused by writing to the output. Such exceptions should be catched inside the method and wrapped inside a TemplateException. (Note that setting Configuration.setWrapUncheckedExceptions(boolean) to true can mitigate the negative effects of implementations that throw RuntimeException-s.)

Specified by:

execute in interface TemplateDirectiveModel

Parameters:

env - the current processing environment. Note that you can access the output Writer by Environment.getOut().

params - the parameters (if any) passed to the directive as a map of key/value pairs where the keys are String-s and the values are TemplateModel instances. This is never null. If you need to convert the template models to POJOs, you can use the utility methods in the DeepUnwrap class.

loopVars - an array that corresponds to the "loop variables", in the order as they appear in the directive call. ("Loop variables" are out-parameters that are available to the nested body of the directive; see in the Manual.) You set the loop variables by writing this array. The length of the array gives the number of loop-variables that the caller has specified. Never null, but can be a zero-length array.

body - an object that can be used to render the nested content (body) of the directive call. If the directive call has no nested content (i.e., it's like <@myDirective /> or <@myDirective></@myDirective>), then this will be null.

Throws:

TemplateException - If any problem occurs that's not an IOException during writing the template output.

java.io.IOException - When writing the template output fails. Other IOException-s should be catched in this method and wrapped into TemplateException.