1/*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the  "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 *     http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18/*
19 * $Id: XMLStringFactoryImpl.java 468655 2006-10-28 07:12:06Z minchau $
20 */
21package org.apache.xpath.objects;
22
23import org.apache.xml.utils.FastStringBuffer;
24import org.apache.xml.utils.XMLString;
25import org.apache.xml.utils.XMLStringFactory;
26
27/**
28 * Class XMLStringFactoryImpl creates XString versions of XMLStrings.
29 * @xsl.usage internal
30 */
31public class XMLStringFactoryImpl extends XMLStringFactory
32{
33  /** The XMLStringFactory to pass to DTM construction.   */
34  private static XMLStringFactory m_xstringfactory =
35    new XMLStringFactoryImpl();
36
37  /**
38   * Get the XMLStringFactory to pass to DTM construction.
39   *
40   *
41   * @return A never-null static reference to a String factory.
42   */
43  public static XMLStringFactory getFactory()
44  {
45    return m_xstringfactory;
46  }
47
48  /**
49   * Create a new XMLString from a Java string.
50   *
51   *
52   * @param string Java String reference, which must be non-null.
53   *
54   * @return An XMLString object that wraps the String reference.
55   */
56  public XMLString newstr(String string)
57  {
58    return new XString(string);
59  }
60
61  /**
62   * Create a XMLString from a FastStringBuffer.
63   *
64   *
65   * @param fsb FastStringBuffer reference, which must be non-null.
66   * @param start The start position in the array.
67   * @param length The number of characters to read from the array.
68   *
69   * @return An XMLString object that wraps the FastStringBuffer reference.
70   */
71  public XMLString newstr(FastStringBuffer fsb, int start, int length)
72  {
73    return new XStringForFSB(fsb, start, length);
74  }
75
76  /**
77   * Create a XMLString from a FastStringBuffer.
78   *
79   *
80   * @param string FastStringBuffer reference, which must be non-null.
81   * @param start The start position in the array.
82   * @param length The number of characters to read from the array.
83   *
84   * @return An XMLString object that wraps the FastStringBuffer reference.
85   */
86  public XMLString newstr(char[] string, int start, int length)
87  {
88    return new XStringForChars(string, start, length);
89  }
90
91  /**
92   * Get a cheap representation of an empty string.
93   *
94   * @return An non-null reference to an XMLString that represents "".
95   */
96  public XMLString emptystr()
97  {
98    return XString.EMPTYSTRING;
99  }
100
101}
102