javax.activation
类 CommandMap

java.lang.Object
  javax.activation.CommandMap

直接已知子类：

MailcapCommandMap

public abstract class CommandMap
extends Object

版本：

$Rev: 513099 $ $Date: 2011/05/07 04:32:39 $

构造方法摘要

CommandMap()

方法摘要

abstract DataContentHandler	createDataContentHandler(String mimeType) Locate a DataContentHandler for the given mime type.
DataContentHandler	createDataContentHandler(String mimeType, DataSource ds) Locate a DataContentHandler for the given mime type.
abstract CommandInfo[]	getAllCommands(String mimeType) Get all available commands for the given mimetype.
CommandInfo[]	getAllCommands(String mimeType, DataSource ds) Get the entire command set for the given mimetype, as modified by the DataSource.
abstract CommandInfo	getCommand(String mimeType, String cmdName) Get the default command implementation for a give mimeType
CommandInfo	getCommand(String mimeType, String cmdName, DataSource ds) Get the default command implementation for a given mimeType/DataSource combo.
static CommandMap	getDefaultCommandMap() Return the default CommandMap.
String[]	getMimeTypes() Return all mime types known to this CommandMap, or null if none.
abstract CommandInfo[]	getPreferredCommands(String mimeType) Get the preferred commands for the given mimetype.
CommandInfo[]	getPreferredCommands(String mimeType, DataSource ds) Get the preferred commands for the given mimetype, as modified by the DataSource.
static void	setDefaultCommandMap(CommandMap commandMap) Set the default CommandMap.

从类 java.lang.Object 继承的方法

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

构造方法详细信息

CommandMap

public CommandMap()

方法详细信息

getDefaultCommandMap

public static CommandMap getDefaultCommandMap()

Return the default CommandMap. If this has not been explictly set using setDefaultCommandMap() then a MailcapCommandMap is returned.

返回：

the default CommandMap

setDefaultCommandMap

public static void setDefaultCommandMap(CommandMap commandMap)

Set the default CommandMap.

参数：

commandMap - the new default CommandMap; if null resets to a MailcapCommandMap

抛出：

SecurityException - if the caller does not have "SetFactory" RuntimePermission

getPreferredCommands

public CommandInfo[] getPreferredCommands(String mimeType,
                                          DataSource ds)

Get the preferred commands for the given mimetype, as modified by the DataSource. The default implementation is just a delegation to getPreferredCommands(mimeType), but the concrete implementations can define additional behavior.

参数：

mimeType - The mimeType name.

ds - The datasource providing the type object.

返回：

The array of CommandInfo[] objects associated with this mimeType/DataSource combo.

getPreferredCommands

public abstract CommandInfo[] getPreferredCommands(String mimeType)

Get the preferred commands for the given mimetype. The concrete implementations define the actual behaviour.

参数：

mimeType - The mimeType name.

返回：

The array of CommandInfo[] objects associated with this mimeType combo.

getAllCommands

public CommandInfo[] getAllCommands(String mimeType,
                                    DataSource ds)

Get the entire command set for the given mimetype, as modified by the DataSource. The default implementation is just a delegation to getAllCommands(mimeType), but the concrete implementations can define additional behavior.

参数：

mimeType - The mimeType name.

ds - The datasource providing the type object.

返回：

The array of CommandInfo[] objects associated with this mimeType/DataSource combo.

getAllCommands

public abstract CommandInfo[] getAllCommands(String mimeType)

Get all available commands for the given mimetype. The concrete implementations define the actual behaviour.

参数：

mimeType - The mimeType name.

返回：

The array of CommandInfo[] objects associated with this mimeType combo.

getCommand

public CommandInfo getCommand(String mimeType,
                              String cmdName,
                              DataSource ds)

Get the default command implementation for a given mimeType/DataSource combo. The default implementation just delegates to getCommand(mimeType, cmdName). Subclasses may provide more specialized behavior.

参数：

mimeType - The name of the mime type

cmdName - The command action we wish to perform.

ds - The modifying DataSource.

返回：

A CommandInfo object corresponding to the command mapping.

getCommand

public abstract CommandInfo getCommand(String mimeType,
                                       String cmdName)

Get the default command implementation for a give mimeType

参数：

mimeType - The name of the mime type

cmdName - The command action we wish to perform.

返回：

A CommandInfo object corresponding to the command mapping.

createDataContentHandler

public DataContentHandler createDataContentHandler(String mimeType,
                                                   DataSource ds)

Locate a DataContentHandler for the given mime type. The concrete implementations determine how this mapping is performed.

参数：

mimeType - The target MIME type.

ds - The DataSource associated with this request.

返回：

The DataContentHandler for the MIME type.

createDataContentHandler

public abstract DataContentHandler createDataContentHandler(String mimeType)

Locate a DataContentHandler for the given mime type. The concrete implementations determine how this mapping is performed.

参数：

mimeType - The target MIME type.

返回：

The DataContentHandler for the MIME type.

getMimeTypes

public String[] getMimeTypes()

Return all mime types known to this CommandMap, or null if none.

返回：

a String array of all mime types known to this CommandMap