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org.jdaemon.util
Class ArrayAccessor  

java.lang.Object
  org.jdaemon.util.ArrayAccessor

All Implemented Interfaces:

Accessor

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public class ArrayAccessor

extends java.lang.Object

implements Accessor

Accessor which allows items stored in an array to be given names and accessed via those names.

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Field Summary
private  java.util.TreeMap	map           Stores the mapping of names to array indices

 

Constructor Summary

ArrayAccessor(java.lang.String[] names)           Creates a new instance of ArrayAccessor given an array of names.

 

Method Summary
java.lang.Object	getAttribute(java.lang.String name, java.lang.Object aggregate)           Retrieves a named attribute from an object.
java.lang.Object	getAttribute(java.lang.String name, java.lang.Object[] array)           Retrieves a named attribute from an array.
java.util.Iterator	getAttributeNames()           Get an iterator over all the attribute names understood by this Accessor.
void	setAttribute(java.lang.String name, java.lang.Object[] array, java.lang.Object value)           Set the value of a named attribute within an array.
void	setAttribute(java.lang.String name, java.lang.Object aggregate, java.lang.Object value)           Set the value of a named attribute within an object.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

map

private java.util.TreeMap map

Stores the mapping of names to array indices

Constructor Detail

ArrayAccessor

public ArrayAccessor(java.lang.String[] names)

Creates a new instance of ArrayAccessor given an array of names. If name ith String in the array of names used to construct an ArrayAccessor accessor, and objects is an array of java objects, then:

accessor.getAttribute(name, objects) == objects[i]

Method Detail

getAttribute

public java.lang.Object getAttribute(java.lang.String name,
                                     java.lang.Object[] array)
                              throws java.lang.IllegalArgumentException

Retrieves a named attribute from an array. If name is the ith String in the array of names used to construct this ArrayAccessor, then:

accessor.getAttribute(name, array) == array[i]

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getAttribute

public java.lang.Object getAttribute(java.lang.String name,
                                     java.lang.Object aggregate)
                              throws java.lang.IllegalArgumentException

Retrieves a named attribute from an object. aggregate must be an array. If name is the ith String in the array of names used to construct this ArrayAccessor, then:

accessor.getAttribute(name, aggregate) == aggregate[i]

Specified by:

getAttribute in interface Accessor

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setAttribute

public void setAttribute(java.lang.String name,
                         java.lang.Object[] array,
                         java.lang.Object value)
                  throws java.lang.IllegalArgumentException

Set the value of a named attribute within an array. If name is the ith String in the array of names used to construct this ArrayAccessor, then:

accessor.setAttribute(name, array, value) and array[i] = value

are equivalent.

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setAttribute

public void setAttribute(java.lang.String name,
                         java.lang.Object aggregate,
                         java.lang.Object value)
                  throws java.lang.IllegalArgumentException

Set the value of a named attribute within an object. aggregate must be an array. If name is the ith String in the array of names used to construct this ArrayAccessor, then:

accessor.setAttribute(name, aggregate, value) and aggregate[i] = value

are equivalent.

Specified by:

setAttribute in interface Accessor

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getAttributeNames

public java.util.Iterator getAttributeNames()

Get an iterator over all the attribute names understood by this Accessor.

Specified by:

getAttributeNames in interface Accessor

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