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org.apache.tiles.velocity.context
Class VelocityUtil

java.lang.Object
  org.apache.tiles.velocity.context.VelocityUtil

public final class VelocityUtil
extends Object

Utilities for Velocity usage in Tiles.

Since:

2.2.0

Version:

$Rev: 902965 $ $Date: 2010-01-25 21:12:46 +0100 (lun, 25 gen 2010) $

Field Summary

static org.apache.velocity.runtime.Renderable

EMPTY_RENDERABLE A renderable object that does not render anything.

Method Summary

static void	evaluateBody(org.apache.velocity.context.InternalContextAdapter context, Writer writer, org.apache.velocity.runtime.parser.node.Node node) Evaluates the body writing in the passed writer.
static String	getBodyAsString(org.apache.velocity.context.InternalContextAdapter context, org.apache.velocity.runtime.parser.node.Node node) Evaluates the body (child node at position 1) and returns it as a string.
static Map<String,Object>	getParameters(org.apache.velocity.context.InternalContextAdapter context, org.apache.velocity.runtime.parser.node.Node node) Extracts the parameters from the directives, by getting the child at position 0 supposing it is a map.
static ArrayStack<Map<String,Object>>	getParameterStack(org.apache.velocity.context.Context context) Deprecated. Use Velocity directives.
static void	setAttribute(org.apache.velocity.context.Context velocityContext, HttpServletRequest request, ServletContext servletContext, String name, Object obj, String scope) Sets an attribute in the desired scope.
static boolean	toSimpleBoolean(Boolean obj, boolean defaultValue) Null-safe conversion from Boolean to boolean.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_RENDERABLE

public static final org.apache.velocity.runtime.Renderable EMPTY_RENDERABLE

A renderable object that does not render anything.

Since:

2.2.0

Method Detail

toSimpleBoolean

public static boolean toSimpleBoolean(Boolean obj,
                                      boolean defaultValue)

Null-safe conversion from Boolean to boolean.

Parameters:

obj - The Boolean object.

defaultValue - This value will be returned if obj is null.

Returns:

The boolean value of obj or, if null, defaultValue.

Since:

2.2.0

getParameterStack

@Deprecated
public static ArrayStack<Map<String,Object>> getParameterStack(org.apache.velocity.context.Context context)

Deprecated. Use Velocity directives.

Returns or creates the parameter stack to use. It is useful to store parameters across tool calls.

Parameters:

context - The Velocity context.

Returns:

The parameter stack.

Since:

2.2.0

setAttribute

public static void setAttribute(org.apache.velocity.context.Context velocityContext,
                                HttpServletRequest request,
                                ServletContext servletContext,
                                String name,
                                Object obj,
                                String scope)

Sets an attribute in the desired scope.

Parameters:

velocityContext - The Velocity context.

request - The HTTP request.

servletContext - The servlet context.

name - The name of the attribute.

obj - The value of the attribute.

scope - The scope. It can be page, request , session, application.

Since:

2.2.0

getBodyAsString

public static String getBodyAsString(org.apache.velocity.context.InternalContextAdapter context,
                                     org.apache.velocity.runtime.parser.node.Node node)
                              throws IOException

Evaluates the body (child node at position 1) and returns it as a string.

Parameters:

context - The Velocity context.

node - The node to use.

Returns:

The evaluated body.

Throws:

IOException - If something goes wrong.

Since:

2.2.2

evaluateBody

public static void evaluateBody(org.apache.velocity.context.InternalContextAdapter context,
                                Writer writer,
                                org.apache.velocity.runtime.parser.node.Node node)
                         throws IOException

Evaluates the body writing in the passed writer.

Parameters:

context - The Velocity context.

writer - The writer to write into.

node - The node to use.

Throws:

IOException - If something goes wrong.

Since:

2.2.2

getParameters

public static Map<String,Object> getParameters(org.apache.velocity.context.InternalContextAdapter context,
                                               org.apache.velocity.runtime.parser.node.Node node)

Extracts the parameters from the directives, by getting the child at position 0 supposing it is a map.

Parameters:

context - The Velocity context.

node - The node to use.

Returns:

The extracted parameters.

Since:

2.2.2