Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
Axis |
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1 | /* |
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2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/saxpath/Axis.java,v 1.6 2005/06/28 13:44:46 elharo Exp $ |
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3 | * $Revision: 1.6 $ |
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4 | * $Date: 2005/06/28 13:44:46 $ |
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5 | * |
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6 | * ==================================================================== |
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7 | * |
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8 | * Copyright (C) 2000-2002 bob mcwhirter & James Strachan. |
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9 | * All rights reserved. |
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10 | * |
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11 | * Redistribution and use in source and binary forms, with or without |
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12 | * modification, are permitted provided that the following conditions |
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13 | * are met: |
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14 | * |
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15 | * 1. Redistributions of source code must retain the above copyright |
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16 | * notice, this list of conditions, and the following disclaimer. |
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17 | * |
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18 | * 2. Redistributions in binary form must reproduce the above copyright |
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19 | * notice, this list of conditions, and the disclaimer that follows |
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20 | * these conditions in the documentation and/or other materials |
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21 | * provided with the distribution. |
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22 | * |
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23 | * 3. The name "Jaxen" must not be used to endorse or promote products |
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24 | * derived from this software without prior written permission. For |
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25 | * written permission, please contact license@jaxen.org. |
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26 | * |
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27 | * 4. Products derived from this software may not be called "Jaxen", nor |
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28 | * may "Jaxen" appear in their name, without prior written permission |
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29 | * from the Jaxen Project Management (pm@jaxen.org). |
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30 | * |
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31 | * In addition, we request (but do not require) that you include in the |
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32 | * end-user documentation provided with the redistribution and/or in the |
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33 | * software itself an acknowledgement equivalent to the following: |
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34 | * "This product includes software developed by the |
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35 | * Jaxen Project <http://www.jaxen.org/>." |
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36 | * Alternatively, the acknowledgment may be graphical using the logos |
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37 | * available at http://www.jaxen.org/ |
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38 | * |
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39 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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40 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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41 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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42 | * DISCLAIMED. IN NO EVENT SHALL THE Jaxen AUTHORS OR THE PROJECT |
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43 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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45 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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46 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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47 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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48 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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49 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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50 | * SUCH DAMAGE. |
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51 | * |
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52 | * ==================================================================== |
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53 | * This software consists of voluntary contributions made by many |
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54 | * individuals on behalf of the Jaxen Project and was originally |
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55 | * created by bob mcwhirter <bob@werken.com> and |
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56 | * James Strachan <jstrachan@apache.org>. For more information on the |
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57 | * Jaxen Project, please see <http://www.jaxen.org/>. |
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58 | * |
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59 | * $Id: Axis.java,v 1.6 2005/06/28 13:44:46 elharo Exp $ |
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60 | */ |
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61 | ||
62 | ||
63 | ||
64 | package org.jaxen.saxpath; |
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65 | ||
66 | import org.jaxen.JaxenRuntimeException; |
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67 | ||
68 | ||
69 | ||
70 | /** |
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71 | * |
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72 | * Internal SAXPath class that contains constants representing |
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73 | * XPath operators to avoid a lot of string comparisons. |
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74 | */ |
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75 | public class Axis |
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76 | { |
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77 | ||
78 | 0 | private Axis() {} |
79 | ||
80 | // XXX Ultimately these should use the type-safe enum pattern instead |
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81 | /** Marker for an invalid axis */ |
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82 | public final static int INVALID_AXIS = 0; |
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83 | ||
84 | /** The <code>child</code> axis */ |
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85 | public final static int CHILD = 1; |
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86 | ||
87 | /** The <code>descendant</code> axis */ |
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88 | public final static int DESCENDANT = 2; |
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89 | ||
90 | /** The <code>parent</code> axis */ |
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91 | public final static int PARENT = 3; |
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92 | ||
93 | /** The <code>ancestor</code> axis */ |
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94 | public final static int ANCESTOR = 4; |
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95 | ||
96 | /** The <code>following-sibling</code> axis */ |
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97 | public final static int FOLLOWING_SIBLING = 5; |
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98 | ||
99 | /** The <code>preceding-sibling</code> axis */ |
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100 | public final static int PRECEDING_SIBLING = 6; |
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101 | ||
102 | /** The <code>following</code> axis */ |
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103 | public final static int FOLLOWING = 7; |
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104 | ||
105 | /** The <code>preceding</code> axis */ |
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106 | public final static int PRECEDING = 8; |
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107 | ||
108 | /** The <code>attribute</code> axis */ |
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109 | public final static int ATTRIBUTE = 9; |
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110 | ||
111 | /** The <code>namespace</code> axis */ |
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112 | public final static int NAMESPACE = 10; |
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113 | ||
114 | /** The <code>self</code> axis */ |
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115 | public final static int SELF = 11; |
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116 | ||
117 | /** The <code>descendant-or-self</code> axis */ |
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118 | public final static int DESCENDANT_OR_SELF = 12; |
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119 | ||
120 | /** The <code>ancestor-or-self</code> axis */ |
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121 | public final static int ANCESTOR_OR_SELF = 13; |
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122 | ||
123 | /** |
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124 | * <p> |
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125 | * Returns the name of the axis. |
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126 | * </p> |
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127 | * |
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128 | * @param axisNum the axis code |
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129 | * @return the name of the axis such as might be used in an XPath expression |
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130 | * @throws JaxenRuntimeException if the number does not represent one of the 13 |
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131 | * XPath axes |
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132 | */ |
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133 | public static String lookup(int axisNum) |
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134 | { |
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135 | 78 | switch ( axisNum ) |
136 | { |
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137 | case CHILD: |
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138 | 36 | return "child"; |
139 | ||
140 | case DESCENDANT: |
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141 | 0 | return "descendant"; |
142 | ||
143 | case PARENT: |
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144 | 0 | return "parent"; |
145 | ||
146 | case ANCESTOR: |
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147 | 0 | return "ancestor"; |
148 | ||
149 | case FOLLOWING_SIBLING: |
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150 | 0 | return "following-sibling"; |
151 | ||
152 | case PRECEDING_SIBLING: |
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153 | 0 | return "preceding-sibling"; |
154 | ||
155 | case FOLLOWING: |
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156 | 0 | return "following"; |
157 | ||
158 | case PRECEDING: |
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159 | 0 | return "preceding"; |
160 | ||
161 | case ATTRIBUTE: |
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162 | 0 | return "attribute"; |
163 | ||
164 | case NAMESPACE: |
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165 | 0 | return "namespace"; |
166 | ||
167 | case SELF: |
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168 | 0 | return "self"; |
169 | ||
170 | case DESCENDANT_OR_SELF: |
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171 | 36 | return "descendant-or-self"; |
172 | ||
173 | case ANCESTOR_OR_SELF: |
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174 | 0 | return "ancestor-or-self"; |
175 | } |
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176 | ||
177 | 6 | throw new JaxenRuntimeException("Illegal Axis Number"); |
178 | } |
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179 | ||
180 | /** |
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181 | * <p> |
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182 | * Returns the code for an axis given its name. |
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183 | * </p> |
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184 | * |
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185 | * @param axisName the name of the axis: child, parent, descendant, descendant-or-self, etc. |
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186 | * @return the axis code |
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187 | */ |
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188 | public static int lookup(String axisName) |
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189 | { |
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190 | 2622 | if ( "child".equals( axisName ) ) |
191 | { |
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192 | 336 | return CHILD; |
193 | } |
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194 | ||
195 | 2286 | if ( "descendant".equals( axisName ) ) |
196 | { |
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197 | 534 | return DESCENDANT; |
198 | } |
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199 | ||
200 | 1752 | if ( "parent".equals( axisName ) ) |
201 | { |
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202 | 222 | return PARENT; |
203 | } |
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204 | ||
205 | 1530 | if ( "ancestor".equals( axisName ) ) |
206 | { |
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207 | 108 | return ANCESTOR; |
208 | } |
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209 | ||
210 | 1422 | if ( "following-sibling".equals( axisName ) ) |
211 | { |
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212 | 54 | return FOLLOWING_SIBLING; |
213 | } |
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214 | ||
215 | 1368 | if ( "preceding-sibling".equals( axisName ) ) |
216 | { |
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217 | 270 | return PRECEDING_SIBLING; |
218 | } |
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219 | ||
220 | 1098 | if ( "following".equals( axisName ) ) |
221 | { |
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222 | 96 | return FOLLOWING; |
223 | } |
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224 | ||
225 | 1002 | if ( "preceding".equals( axisName ) ) |
226 | { |
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227 | 222 | return PRECEDING; |
228 | } |
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229 | ||
230 | 780 | if ( "attribute".equals( axisName ) ) |
231 | { |
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232 | 48 | return ATTRIBUTE; |
233 | } |
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234 | ||
235 | 732 | if ( "namespace".equals( axisName ) ) |
236 | { |
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237 | 468 | return NAMESPACE; |
238 | } |
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239 | ||
240 | 264 | if ( "self".equals( axisName ) ) |
241 | { |
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242 | 42 | return SELF; |
243 | } |
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244 | ||
245 | 222 | if ( "descendant-or-self".equals( axisName ) ) |
246 | { |
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247 | 156 | return DESCENDANT_OR_SELF; |
248 | } |
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249 | ||
250 | 66 | if ( "ancestor-or-self".equals( axisName ) ) |
251 | { |
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252 | 54 | return ANCESTOR_OR_SELF; |
253 | } |
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254 | ||
255 | 12 | return INVALID_AXIS; |
256 | } |
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257 | } |