Package org.apache.velocity.example
Class TreeMapContext
- java.lang.Object
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- org.apache.velocity.context.InternalContextBase
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- org.apache.velocity.context.AbstractContext
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- org.apache.velocity.example.TreeMapContext
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- All Implemented Interfaces:
Context
,InternalEventContext
,InternalHousekeepingContext
public class TreeMapContext extends AbstractContext
Example context impl that uses a TreeMap Not much point other than to show how easy it is. This is unsupported, example code.- Version:
- $Id$
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Field Summary
Fields Modifier and Type Field Description private java.util.Map<java.lang.String,java.lang.Object>
context
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Constructor Summary
Constructors Constructor Description TreeMapContext()
TreeMapContext(Context inner)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
internalContainsKey(java.lang.String key)
Implement to determine if a key is in the storage.java.lang.Object
internalGet(java.lang.String key)
Implement to return a value from the context storage.java.lang.String[]
internalGetKeys()
Implement to return an object array of key strings from your storage.java.lang.Object
internalPut(java.lang.String key, java.lang.Object value)
Implement to put a value into the context storage.java.lang.Object
internalRemove(java.lang.String key)
Implement to remove an item from your storage.-
Methods inherited from class org.apache.velocity.context.AbstractContext
containsKey, get, getChainedContext, getKeys, put, remove
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Methods inherited from class org.apache.velocity.context.InternalContextBase
attachEventCartridge, getCurrentMacroCallDepth, getCurrentMacroName, getCurrentResource, getCurrentTemplateName, getEventCartridge, getMacroLibraries, getMacroNameStack, getTemplateNameStack, icacheGet, icachePut, popCurrentMacroName, popCurrentTemplateName, pushCurrentMacroName, pushCurrentTemplateName, setCurrentResource, setMacroLibraries
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Constructor Detail
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TreeMapContext
public TreeMapContext()
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TreeMapContext
public TreeMapContext(Context inner)
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Method Detail
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internalGet
public java.lang.Object internalGet(java.lang.String key)
Description copied from class:AbstractContext
Implement to return a value from the context storage.
The implementation of this method is required for proper operation of a Context implementation in general Velocity use.- Specified by:
internalGet
in classAbstractContext
- Parameters:
key
- key whose associated value is to be returned- Returns:
- object stored in the context
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internalPut
public java.lang.Object internalPut(java.lang.String key, java.lang.Object value)
Description copied from class:AbstractContext
Implement to put a value into the context storage.
The implementation of this method is required for proper operation of a Context implementation in general Velocity use.- Specified by:
internalPut
in classAbstractContext
- Parameters:
key
- key with which to associate the valuevalue
- value to be associated with the key- Returns:
- previously stored value if exists, or null
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internalContainsKey
public boolean internalContainsKey(java.lang.String key)
Description copied from class:AbstractContext
Implement to determine if a key is in the storage.
Currently, this method is not used internally by the Velocity engine.- Specified by:
internalContainsKey
in classAbstractContext
- Parameters:
key
- key to test for existence- Returns:
- true if found, false if not
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internalGetKeys
public java.lang.String[] internalGetKeys()
Description copied from class:AbstractContext
Implement to return an object array of key strings from your storage.
Currently, this method is not used internally by the Velocity engine.- Specified by:
internalGetKeys
in classAbstractContext
- Returns:
- array of keys
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internalRemove
public java.lang.Object internalRemove(java.lang.String key)
Description copied from class:AbstractContext
Implement to remove an item from your storage.
Currently, this method is not used internally by the Velocity engine.- Specified by:
internalRemove
in classAbstractContext
- Parameters:
key
- key to remove- Returns:
- object removed if exists, else null
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