DerivedExecutionContext (unix4j 0.4 API)

java.lang.Object
- org.unix4j.context.DerivedExecutionContext

All Implemented Interfaces:

ExecutionContext
```
public class DerivedExecutionContext
extends Object
implements ExecutionContext
```
A derived execution context allows overriding of some values while forwarding other getter calls to an original delegate context.

Constructor Summary

Constructors
Constructor and Description
`DerivedExecutionContext()` Constructor for new derived execution context with a new instance of `DefaultExecutionContext` as delegate context.
`DerivedExecutionContext(ExecutionContext delegate)` Constructor for new derived execution context with the specified delegate context.

Method Summary

Methods
Modifier and Type	Method and Description
`ConverterRegistry`	`getConverterRegistry()`
`File`	`getCurrentDirectory()` Returns the current directory, never null.
`Map<String,String>`	`getEnv()`
`Locale`	`getLocale()`
`File`	`getRelativeToCurrentDirectory(File file)` Returns the given file but relative to the `current directory` if the given file path is not absolute.
`Properties`	`getSys()`
`File`	`getTempDirectory()`
`String`	`getUser()` Returns the user name, usually defined by the `"user.name"` system property.
`File`	`getUserHome()` Returns the user home directory, usually defined by the `"user.home"` system property.
`<V> ValueConverter<V>`	`getValueConverterFor(Class<V> type)`
`VariableContext`	`getVariableContext()`
`protected void`	`init()` Initialisation method called from the constructor.
`void`	`setConverterRegistry(ConverterRegistry converterRegistry)`
`void`	`setCurrentDirectory(File currentDirectory)`
`void`	`setCurrentDirectory(String currentDirectory)`
`void`	`setEnv(Map<String,String> env)`
`void`	`setLocale(Locale locale)`
`void`	`setSys(Properties sys)`
`void`	`setTempDirectory(File tempDirectory)`
`void`	`setTempDirectory(String tempDirectory)`
`void`	`setUser(String user)`
`void`	`setUserHome(File userHome)`
`void`	`setUserHome(String userHome)`
`void`	`setVariableContext(VariableContext variableContext)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DerivedExecutionContext
```
public DerivedExecutionContext()
```
    Constructor for new derived execution context with a new instance of DefaultExecutionContext as delegate context.
  - DerivedExecutionContext
```
public DerivedExecutionContext(ExecutionContext delegate)
```
    Constructor for new derived execution context with the specified delegate context.
    
    Parameters:
    delegate - the delegate context to which all getter calls are forwarded by default
- Method Detail
  - init
```
protected void init()
```
    Initialisation method called from the constructor. The default implementation adds a ExecutionContextVariableResolver for this derived context to the VariableContext.
    
    See Also:
    getVariableContext()
  - setCurrentDirectory
```
public void setCurrentDirectory(File currentDirectory)
```
  - setCurrentDirectory
```
public void setCurrentDirectory(String currentDirectory)
```
  - getCurrentDirectory
```
public File getCurrentDirectory()
```
    Description copied from interface: ExecutionContext
    
    Returns the current directory, never null. If the current directory has not explicitly been changed, the file specified by the "user.dir" system property is returned.
    
    Specified by:
    
    getCurrentDirectory in interface ExecutionContext
    
    Returns:
    the current directory, the same as the "user.dir" system property it has not been set explicitly
    See Also:
    System.getProperties()
  - setUser
```
public void setUser(String user)
```
  - getRelativeToCurrentDirectory
```
public File getRelativeToCurrentDirectory(File file)
```
    Description copied from interface: ExecutionContext
    
    Returns the given file but relative to the current directory if the given file path is not absolute. Most commands should resolve files through this method since the unix4j current directory and the Java current directory are not the same.
    
    Specified by:
    
    getRelativeToCurrentDirectory in interface ExecutionContext
    
    Parameters:
    file - the file to return relative to the current directory if it denotes a relative path
    
    Returns:
    the given file relative to the execution context's current directory
  - getUser
```
public String getUser()
```
    Description copied from interface: ExecutionContext
    
    Returns the user name, usually defined by the "user.name" system property.
    
    Specified by:
    
    getUser in interface ExecutionContext
    
    Returns:
    the user name, usually defined by the "user.name" system property
    See Also:
    System.getProperties()
  - setUserHome
```
public void setUserHome(File userHome)
```
  - setUserHome
```
public void setUserHome(String userHome)
```
  - getUserHome
```
public File getUserHome()
```
    Description copied from interface: ExecutionContext
    
    Returns the user home directory, usually defined by the "user.home" system property.
    
    Specified by:
    
    getUserHome in interface ExecutionContext
    
    Returns:
    the user home directory, usually defined by the "user.home" system property
    See Also:
    System.getProperties()
  - setTempDirectory
```
public void setTempDirectory(File tempDirectory)
```
  - setTempDirectory
```
public void setTempDirectory(String tempDirectory)
```
  - getTempDirectory
```
public File getTempDirectory()
```
    Specified by:
    
    getTempDirectory in interface ExecutionContext
  - setLocale
```
public void setLocale(Locale locale)
```
  - getLocale
```
public Locale getLocale()
```
    Specified by:
    
    getLocale in interface ExecutionContext
  - setEnv
```
public void setEnv(Map<String,String> env)
```
  - getEnv
```
public Map<String,String> getEnv()
```
    Specified by:
    
    getEnv in interface ExecutionContext
  - setSys
```
public void setSys(Properties sys)
```
  - getSys
```
public Properties getSys()
```
    Specified by:
    
    getSys in interface ExecutionContext
  - setVariableContext
```
public void setVariableContext(VariableContext variableContext)
```
  - getVariableContext
```
public VariableContext getVariableContext()
```
    Specified by:
    
    getVariableContext in interface ExecutionContext
  - setConverterRegistry
```
public void setConverterRegistry(ConverterRegistry converterRegistry)
```
  - getConverterRegistry
```
public ConverterRegistry getConverterRegistry()
```
    Specified by:
    
    getConverterRegistry in interface ExecutionContext
  - getValueConverterFor
```
public <V> ValueConverter<V> getValueConverterFor(Class<V> type)
```
    Specified by:
    
    getValueConverterFor in interface ExecutionContext

Class DerivedExecutionContext

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DerivedExecutionContext

DerivedExecutionContext

Method Detail

init

setCurrentDirectory

setCurrentDirectory

getCurrentDirectory

setUser

getRelativeToCurrentDirectory

getUser

setUserHome

setUserHome

getUserHome

setTempDirectory

setTempDirectory

getTempDirectory

setLocale

getLocale

setEnv

getEnv

setSys

getSys

setVariableContext

getVariableContext

setConverterRegistry

getConverterRegistry

getValueConverterFor