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/*
* $Id: StringToStringTableVector.java,v 1.8 2010-11-01 04:34:52 joehw Exp $
*/
package com.sun.org.apache.xml.internal.utils;
/**
* A very simple table that stores a list of StringToStringTables, optimized
* for small lists.
* @xsl.usage internal
*/
public class StringToStringTableVector
{
/** Size of blocks to allocate */
private int m_blocksize;
/** Array of StringToStringTable objects */
private StringToStringTable m_map[];
/** Number of StringToStringTable objects in this array */
private int m_firstFree = 0;
/** Size of this array */
private int m_mapSize;
/**
* Default constructor. Note that the default
* block size is very small, for small lists.
*/
public StringToStringTableVector()
{
m_blocksize = 8;
m_mapSize = m_blocksize;
m_map = new StringToStringTable[m_blocksize];
}
/**
* Construct a StringToStringTableVector, using the given block size.
*
* @param blocksize Size of blocks to allocate
*/
public StringToStringTableVector(int blocksize)
{
m_blocksize = blocksize;
m_mapSize = blocksize;
m_map = new StringToStringTable[blocksize];
}
/**
* Get the length of the list.
*
* @return Number of StringToStringTable objects in the list
*/
public final int getLength()
{
return m_firstFree;
}
/**
* Get the length of the list.
*
* @return Number of StringToStringTable objects in the list
*/
public final int size()
{
return m_firstFree;
}
/**
* Append a StringToStringTable object onto the vector.
*
* @param value StringToStringTable object to add
*/
public final void addElement(StringToStringTable value)
{
if ((m_firstFree + 1) >= m_mapSize)
{
m_mapSize += m_blocksize;
StringToStringTable newMap[] = new StringToStringTable[m_mapSize];
System.arraycopy(m_map, 0, newMap, 0, m_firstFree + 1);
m_map = newMap;
}
m_map[m_firstFree] = value;
m_firstFree++;
}
/**
* Given a string, find the last added occurance value
* that matches the key.
*
* @param key String to look up
*
* @return the last added occurance value that matches the key
* or null if not found.
*/
public final String get(String key)
{
for (int i = m_firstFree - 1; i >= 0; --i)
{
String nsuri = m_map[i].get(key);
if (nsuri != null)
return nsuri;
}
return null;
}
/**
* Given a string, find out if there is a value in this table
* that matches the key.
*
* @param key String to look for
*
* @return True if the string was found in table, null if not
*/
public final boolean containsKey(String key)
{
for (int i = m_firstFree - 1; i >= 0; --i)
{
if (m_map[i].get(key) != null)
return true;
}
return false;
}
/**
* Remove the last element.
*/
public final void removeLastElem()
{
if (m_firstFree > 0)
{
m_map[m_firstFree] = null;
m_firstFree--;
}
}
/**
* Get the nth element.
*
* @param i Index of element to find
*
* @return The StringToStringTable object at the given index
*/
public final StringToStringTable elementAt(int i)
{
return m_map[i];
}
/**
* Tell if the table contains the given StringToStringTable.
*
* @param s The StringToStringTable to find
*
* @return True if the StringToStringTable is found
*/
public final boolean contains(StringToStringTable s)
{
for (int i = 0; i < m_firstFree; i++)
{
if (m_map[i].equals(s))
return true;
}
return false;
}
}