| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * Copyright 1999-2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| /* |
| * $Id: StringToStringTableVector.java,v 1.2.4.1 2005/09/15 08:15:56 suresh_emailid 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; |
| } |
| } |