Package com.sun.javatest.util
Class OrderedTwoWayTable
- java.lang.Object
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- com.sun.javatest.util.OrderedTwoWayTable
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public class OrderedTwoWayTable extends java.lang.Object
A map-like structure which has two side-by-side ordered sets of Objects in pairs. This is basically a map structure except that it is always ordered and has a less strict an idea of key and value. The terms key and value are still used to differentiate data from the two sets. The primary advantage to using this class is that you can do lookups either by key or value, in case where translation in both directions is necessary.
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Constructor Summary
Constructors Constructor Description OrderedTwoWayTable()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected int
findIndex(java.util.Vector data, java.lang.Object target)
Get the index of the target in the table.java.lang.Object
getKeyAt(int index)
Get the key at the given index.int
getKeyIndex(java.lang.Object key)
Get the position of the key within the table.int
getSize()
Get the number of pairs in the table.java.lang.Object
getValueAt(int index)
Get the value at the given index.int
getValueIndex(java.lang.Object value)
Get the position of a value within the table.void
put(java.lang.Object key, java.lang.Object value)
Put an object in the table.void
remove(int index)
Remove the object at a specified index.
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Method Detail
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put
public void put(java.lang.Object key, java.lang.Object value)
Put an object in the table.- Parameters:
key
- the key for this objectvalue
- the object to be stored in the table
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getKeyIndex
public int getKeyIndex(java.lang.Object key)
Get the position of the key within the table.- Parameters:
key
- the key whose position is required- Returns:
- the position of the key within the table, or -1 if not found
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getValueIndex
public int getValueIndex(java.lang.Object value)
Get the position of a value within the table.- Parameters:
value
- the value whose position is required- Returns:
- the position of the value within the table, or -1 if not found
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getValueAt
public java.lang.Object getValueAt(int index)
Get the value at the given index.- Parameters:
index
- the index of the required value- Returns:
- the value at the given index, or null if not found or index out of bounds.
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getKeyAt
public java.lang.Object getKeyAt(int index)
Get the key at the given index.- Parameters:
index
- the index of the given key- Returns:
- the value at the given index, null if not found or index out of bounds.
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getSize
public int getSize()
Get the number of pairs in the table.- Returns:
- the numbver of pairs on the table
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remove
public void remove(int index)
Remove the object at a specified index.- Parameters:
index
- the index of the entry to be removed.
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findIndex
protected int findIndex(java.util.Vector data, java.lang.Object target)
Get the index of the target in the table. This is a reference equality search.- Parameters:
data
- the vector in which to searchtarget
- the object to search for- Returns:
- the index of the target in the vector, or -1 if not found
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