com.atlassian.confluence.velocity.context

Class ChainedVelocityContext

java.lang.Object

org.apache.velocity.context.AbstractContext

org.apache.velocity.VelocityContext

com.atlassian.confluence.velocity.context.ChainedVelocityContext

All Implemented Interfaces:

Cloneable, org.apache.velocity.context.Context, org.apache.velocity.context.InternalEventContext

public final class ChainedVelocityContext
extends org.apache.velocity.VelocityContext

Replace the chaining provided by AbstractContext because it has broken implementations of containsKey() and getKeys() in Velocity 1.5.

This class works around the broken implementations of containsKey() by checking the result of get() instead.

Constructor Summary

Constructors

Constructor and Description
ChainedVelocityContext(org.apache.velocity.context.Context delegate) Creates a new chained context using the provided delegate context for secondary lookups.

Method Summary

Modifier and Type	Method and Description
boolean	internalContainsKey(Object key)
Object	internalGet(String key)
Object[]	internalGetKeys() This method is inherently unreliable because the implementation of AbstractContext.getKeys() used in other Velocity contexts doesn't delegate correctly.

Methods inherited from class org.apache.velocity.VelocityContext

clone, internalPut, internalRemove

Methods inherited from class org.apache.velocity.context.AbstractContext

containsKey, get, getChainedContext, getKeys, put, remove

Methods inherited from class java.lang.Object

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

Constructor Detail

ChainedVelocityContext

public ChainedVelocityContext(org.apache.velocity.context.Context delegate)

Creates a new chained context using the provided delegate context for secondary lookups.

Parameters:

delegate - the delegate context which is checked after this context

Throws:

IllegalArgumentException - if delegate is null

Method Detail

internalGet

public Object internalGet(String key)

Overrides:

internalGet in class org.apache.velocity.VelocityContext

internalContainsKey

public boolean internalContainsKey(Object key)

Overrides:

internalContainsKey in class org.apache.velocity.VelocityContext

internalGetKeys

public Object[] internalGetKeys()

This method is inherently unreliable because the implementation of AbstractContext.getKeys() used in other Velocity contexts doesn't delegate correctly. Because of this, the result may not contains all the keys of the delegate context.

Overrides:

internalGetKeys in class org.apache.velocity.VelocityContext