AbstractContext (bboss-velocity 6.1.5 API)

java.lang.Object
- bboss.org.apache.velocity.context.AbstractContext

所有已实现的接口:

Context, InternalEventContext

直接已知子类:

VelocityContext
```
public abstract class AbstractContext
extends java.lang.Object
implements Context
```
This class is the abstract base class for all conventional Velocity Context implementations. Simply extend this class and implement the abstract routines that access your preferred storage method. Takes care of context chaining. Also handles / enforces policy on null keys and values :
- Null keys and values are accepted and basically dropped.
- If you place an object into the context with a null key, it will be ignored and logged.
- If you try to place a null into the context with any key, it will be dropped and logged.
The default implementation of this for application use is bboss.org.apache.velocity.VelocityContext. All thanks to Fedor for the chaining idea.

构造器概要

构造器
构造器和说明

AbstractContext()
default CTOR

AbstractContext(Context inner)
Chaining constructor accepts a Context argument.

构造器
构造器和说明
`AbstractContext()` default CTOR
`AbstractContext(Context inner)` Chaining constructor accepts a Context argument.

方法概要

所有方法实例方法抽象方法具体方法
限定符和类型	方法和说明
`EventCartridge`	`attachEventCartridge(EventCartridge ec)`
`boolean`	`containsKey(java.lang.Object key)` Indicates whether the specified key is in the context.
`java.lang.Object`	`get(java.lang.String key)` Gets the value corresponding to the provided key from the context.
`Context`	`getChainedContext()` returns innerContext if one is chained
`int`	`getCurrentMacroCallDepth()` get the current macro call depth
`java.lang.String`	`getCurrentMacroName()` get the current macro name
`Resource`	`getCurrentResource()` temporary fix to enable #include() to figure out current encoding.
`java.lang.String`	`getCurrentTemplateName()` get the current template name
`EventCartridge`	`getEventCartridge()`
`java.lang.Object[]`	`getKeys()` Get all the keys for the values in the context
`java.util.List`	`getMacroLibraries()` Get the macro library list for the current template.
`java.lang.Object[]`	`getMacroNameStack()` get the current macro name stack
`java.lang.Object[]`	`getTemplateNameStack()` get the current template name stack
`IntrospectionCacheData`	`icacheGet(java.lang.Object key)` returns an IntrospectionCache Data (@see IntrospectionCacheData) object if exists for the key
`void`	`icachePut(java.lang.Object key, IntrospectionCacheData o)` places an IntrospectionCache Data (@see IntrospectionCacheData) element in the cache for specified key
`abstract boolean`	`internalContainsKey(java.lang.Object key)` Implement to determine if a key is in the storage.
`abstract java.lang.Object`	`internalGet(java.lang.String key)` Implement to return a value from the context storage.
`abstract java.lang.Object[]`	`internalGetKeys()` Implement to return an object array of key strings from your storage.
`abstract java.lang.Object`	`internalPut(java.lang.String key, java.lang.Object value)` Implement to put a value into the context storage.
`abstract java.lang.Object`	`internalRemove(java.lang.Object key)` I mplement to remove an item from your storage.
`void`	`popCurrentMacroName()` remove the current macro name from stack
`void`	`popCurrentTemplateName()` remove the current template name from stack
`void`	`pushCurrentMacroName(java.lang.String s)` set the current macro name on top of stack
`void`	`pushCurrentTemplateName(java.lang.String s)` set the current template name on top of stack
`java.lang.Object`	`put(java.lang.String key, java.lang.Object value)` Adds a name/value pair to the context.
`java.lang.Object`	`remove(java.lang.Object key)` Removes the value associated with the specified key from the context.
`void`	`setCurrentResource(Resource r)`
`void`	`setMacroLibraries(java.util.List macroLibraries)` Set the macro library list for the current template.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - AbstractContext
```
public AbstractContext()
```
    default CTOR
  - AbstractContext
```
public AbstractContext(Context inner)
```
    Chaining constructor accepts a Context argument. It will relay get() operations into this Context in the even the 'local' get() returns null.
    
    参数:
    
    inner - context to be chained
- 方法详细资料
  - internalGet
```
public abstract java.lang.Object internalGet(java.lang.String key)
```
    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.
    
    参数:
    
    key - key whose associated value is to be returned
    
    返回:
    
    object stored in the context
  - internalPut
```
public abstract java.lang.Object internalPut(java.lang.String key,
                                             java.lang.Object value)
```
    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.
    
    参数:
    
    key - key with which to associate the value
    
    value - value to be associated with the key
    
    返回:
    
    previously stored value if exists, or null
  - internalContainsKey
```
public abstract boolean internalContainsKey(java.lang.Object key)
```
    Implement to determine if a key is in the storage.
    
    Currently, this method is not used internally by the Velocity engine.
    
    参数:
    
    key - key to test for existance
    
    返回:
    
    true if found, false if not
  - internalGetKeys
```
public abstract java.lang.Object[] internalGetKeys()
```
    Implement to return an object array of key strings from your storage.
    
    Currently, this method is not used internally by the Velocity engine.
    
    返回:
    
    array of keys
  - internalRemove
```
public abstract java.lang.Object internalRemove(java.lang.Object key)
```
    I mplement to remove an item from your storage.
    
    Currently, this method is not used internally by the Velocity engine.
    
    参数:
    
    key - key to remove
    
    返回:
    
    object removed if exists, else null
  - put
```
public java.lang.Object put(java.lang.String key,
                            java.lang.Object value)
```
    Adds a name/value pair to the context.
    
    指定者:
    
    put 在接口中 Context
    
    参数:
    
    key - The name to key the provided value with.
    
    value - The corresponding value.
    
    返回:
    
    Object that was replaced in the the Context if applicable or null if not.
  - get
```
public java.lang.Object get(java.lang.String key)
```
    Gets the value corresponding to the provided key from the context. Supports the chaining context mechanism. If the 'local' context doesn't have the value, we try to get it from the chained context.
    
    指定者:
    
    get 在接口中 Context
    
    参数:
    
    key - The name of the desired value.
    
    返回:
    
    The value corresponding to the provided key or null if the key param is null.
  - containsKey
```
public boolean containsKey(java.lang.Object key)
```
    Indicates whether the specified key is in the context. Provided for debugging purposes.
    
    指定者:
    
    containsKey 在接口中 Context
    
    参数:
    
    key - The key to look for.
    
    返回:
    
    true if the key is in the context, false if not.
  - getKeys
```
public java.lang.Object[] getKeys()
```
    Get all the keys for the values in the context
    
    指定者:
    
    getKeys 在接口中 Context
    
    返回:
    
    Object[] of keys in the Context. Does not return keys in chained context.
  - remove
```
public java.lang.Object remove(java.lang.Object key)
```
    Removes the value associated with the specified key from the context.
    
    指定者:
    
    remove 在接口中 Context
    
    参数:
    
    key - The name of the value to remove.
    
    返回:
    
    The value that the key was mapped to, or null if unmapped.
  - getChainedContext
```
public Context getChainedContext()
```
    returns innerContext if one is chained
    
    返回:
    
    Context if chained, null if not
  - pushCurrentTemplateName
```
public void pushCurrentTemplateName(java.lang.String s)
```
    set the current template name on top of stack
    
    参数:
    
    s - current template name
  - popCurrentTemplateName
```
public void popCurrentTemplateName()
```
    remove the current template name from stack
  - getCurrentTemplateName
```
public java.lang.String getCurrentTemplateName()
```
    get the current template name
    
    返回:
    
    String current template name
  - getTemplateNameStack
```
public java.lang.Object[] getTemplateNameStack()
```
    get the current template name stack
    
    返回:
    
    Object[] with the template name stack contents.
  - pushCurrentMacroName
```
public void pushCurrentMacroName(java.lang.String s)
```
    set the current macro name on top of stack
    
    参数:
    
    s - current macro name
  - popCurrentMacroName
```
public void popCurrentMacroName()
```
    remove the current macro name from stack
  - getCurrentMacroName
```
public java.lang.String getCurrentMacroName()
```
    get the current macro name
    
    返回:
    
    String current macro name
  - getCurrentMacroCallDepth
```
public int getCurrentMacroCallDepth()
```
    get the current macro call depth
    
    返回:
    
    int current macro call depth
  - getMacroNameStack
```
public java.lang.Object[] getMacroNameStack()
```
    get the current macro name stack
    
    返回:
    
    Object[] with the macro name stack contents.
  - icacheGet
```
public IntrospectionCacheData icacheGet(java.lang.Object key)
```
    returns an IntrospectionCache Data (@see IntrospectionCacheData) object if exists for the key
    
    参数:
    
    key - key to find in cache
    
    返回:
    
    cache object
  - icachePut
```
public void icachePut(java.lang.Object key,
                      IntrospectionCacheData o)
```
    places an IntrospectionCache Data (@see IntrospectionCacheData) element in the cache for specified key
    
    参数:
    
    key - key
    
    o - IntrospectionCacheData object to place in cache
  - setCurrentResource
```
public void setCurrentResource(Resource r)
```
    另请参阅:
    
    InternalHousekeepingContext.setCurrentResource(bboss.org.apache.velocity.runtime.resource.Resource)
  - getCurrentResource
```
public Resource getCurrentResource()
```
    temporary fix to enable #include() to figure out current encoding.
    
    返回:
    
    The current resource.
    
    另请参阅:
    
    InternalHousekeepingContext.getCurrentResource()
  - setMacroLibraries
```
public void setMacroLibraries(java.util.List macroLibraries)
```
    Set the macro library list for the current template.
    
    参数:
    
    macroLibraries - list of macro libraries to set
    
    另请参阅:
    
    InternalHousekeepingContext.setMacroLibraries(List)
  - getMacroLibraries
```
public java.util.List getMacroLibraries()
```
    Get the macro library list for the current template.
    
    返回:
    
    List of macro library names
    
    另请参阅:
    
    InternalHousekeepingContext.getMacroLibraries()
  - attachEventCartridge
```
public EventCartridge attachEventCartridge(EventCartridge ec)
```
    指定者:
    
    attachEventCartridge 在接口中 InternalEventContext
    
    返回:
    
    The old EventCartridge.
    
    另请参阅:
    
    InternalEventContext.attachEventCartridge(bboss.org.apache.velocity.app.event.EventCartridge)
  - getEventCartridge
```
public EventCartridge getEventCartridge()
```
    指定者:
    
    getEventCartridge 在接口中 InternalEventContext
    
    返回:
    
    The current EventCartridge.
    
    另请参阅:
    
    InternalEventContext.getEventCartridge()

类 AbstractContext

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

AbstractContext

AbstractContext

方法详细资料

internalGet

internalPut

internalContainsKey

internalGetKeys

internalRemove

put

get

containsKey

getKeys

remove

getChainedContext

pushCurrentTemplateName

popCurrentTemplateName

getCurrentTemplateName

getTemplateNameStack

pushCurrentMacroName

popCurrentMacroName

getCurrentMacroName

getCurrentMacroCallDepth

getMacroNameStack

icacheGet

icachePut

setCurrentResource

getCurrentResource

setMacroLibraries

getMacroLibraries

attachEventCartridge

getEventCartridge