| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| Filters |
|
| 1.0;1 |
| 1 | /*-- | |
| 2 | ||
| 3 | Copyright (C) 2011-2012 Jason Hunter & Brett McLaughlin. | |
| 4 | All rights reserved. | |
| 5 | ||
| 6 | Redistribution and use in source and binary forms, with or without | |
| 7 | modification, are permitted provided that the following conditions | |
| 8 | are met: | |
| 9 | ||
| 10 | 1. Redistributions of source code must retain the above copyright | |
| 11 | notice, this list of conditions, and the following disclaimer. | |
| 12 | ||
| 13 | 2. Redistributions in binary form must reproduce the above copyright | |
| 14 | notice, this list of conditions, and the disclaimer that follows | |
| 15 | these conditions in the documentation and/or other materials | |
| 16 | provided with the distribution. | |
| 17 | ||
| 18 | 3. The name "JDOM" must not be used to endorse or promote products | |
| 19 | derived from this software without prior written permission. For | |
| 20 | written permission, please contact <request_AT_jdom_DOT_org>. | |
| 21 | ||
| 22 | 4. Products derived from this software may not be called "JDOM", nor | |
| 23 | may "JDOM" appear in their name, without prior written permission | |
| 24 | from the JDOM Project Management <request_AT_jdom_DOT_org>. | |
| 25 | ||
| 26 | In addition, we request (but do not require) that you include in the | |
| 27 | end-user documentation provided with the redistribution and/or in the | |
| 28 | software itself an acknowledgement equivalent to the following: | |
| 29 | "This product includes software developed by the | |
| 30 | JDOM Project (http://www.jdom.org/)." | |
| 31 | Alternatively, the acknowledgment may be graphical using the logos | |
| 32 | available at http://www.jdom.org/images/logos. | |
| 33 | ||
| 34 | THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED | |
| 35 | WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
| 36 | OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 37 | DISCLAIMED. IN NO EVENT SHALL THE JDOM AUTHORS OR THE PROJECT | |
| 38 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 39 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 40 | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | |
| 41 | USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
| 42 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
| 43 | OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT | |
| 44 | OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 45 | SUCH DAMAGE. | |
| 46 | ||
| 47 | This software consists of voluntary contributions made by many | |
| 48 | individuals on behalf of the JDOM Project and was originally | |
| 49 | created by Jason Hunter <jhunter_AT_jdom_DOT_org> and | |
| 50 | Brett McLaughlin <brett_AT_jdom_DOT_org>. For more information | |
| 51 | on the JDOM Project, please see <http://www.jdom.org/>. | |
| 52 | ||
| 53 | */ | |
| 54 | ||
| 55 | package org.jdom2.filter; | |
| 56 | ||
| 57 | import org.jdom2.Attribute; | |
| 58 | import org.jdom2.CDATA; | |
| 59 | import org.jdom2.Comment; | |
| 60 | import org.jdom2.Content; | |
| 61 | import org.jdom2.DocType; | |
| 62 | import org.jdom2.Document; | |
| 63 | import org.jdom2.Element; | |
| 64 | import org.jdom2.EntityRef; | |
| 65 | import org.jdom2.Namespace; | |
| 66 | import org.jdom2.ProcessingInstruction; | |
| 67 | import org.jdom2.Text; | |
| 68 | ||
| 69 | /** | |
| 70 | * Factory class of convenience methods to create Filter instances of common | |
| 71 | * types. Methods that return Filters that act on core JDOM classes (Element, | |
| 72 | * Text, etc.) are simply named after the content they return. | |
| 73 | * <p> | |
| 74 | * Filters that | |
| 75 | * match non-core classes (Boolean, Object, etc.) are all prefixed with the | |
| 76 | * letter 'f' (for <strong>f</strong>ilter). | |
| 77 | * <p> | |
| 78 | * The Filter returned by {@link #fpassthrough()} is not really a filter in the | |
| 79 | * sense that it will never filter anything out - everything matches. This can | |
| 80 | * be useful to accomplish some tasks, for example the JDOM XPath API uses it | |
| 81 | * extensively. | |
| 82 | * | |
| 83 | * @author Rolf Lear | |
| 84 | * | |
| 85 | */ | |
| 86 | public final class Filters { | |
| 87 | ||
| 88 | 1 | private static final Filter<Content> fcontent = |
| 89 | new ClassFilter<Content>(Content.class); | |
| 90 | ||
| 91 | 1 | private static final Filter<Attribute> fattribute = |
| 92 | new AttributeFilter(); | |
| 93 | ||
| 94 | 1 | private static final Filter<Comment> fcomment = |
| 95 | new ClassFilter<Comment>(Comment.class); | |
| 96 | ||
| 97 | 1 | private static final Filter<CDATA> fcdata = |
| 98 | new ClassFilter<CDATA>(CDATA.class); | |
| 99 | ||
| 100 | 1 | private static final Filter<DocType> fdoctype = |
| 101 | new ClassFilter<DocType>(DocType.class); | |
| 102 | ||
| 103 | 1 | private static final Filter<EntityRef> fentityref = |
| 104 | new ClassFilter<EntityRef>(EntityRef.class); | |
| 105 | ||
| 106 | 1 | private static final Filter<ProcessingInstruction> fpi = |
| 107 | new ClassFilter<ProcessingInstruction>(ProcessingInstruction.class); | |
| 108 | ||
| 109 | 1 | private static final Filter<Text> ftext = |
| 110 | new ClassFilter<Text>(Text.class); | |
| 111 | ||
| 112 | 1 | private static final Filter<Text> ftextonly = new TextOnlyFilter(); |
| 113 | ||
| 114 | 1 | private static final Filter<Element> felement = |
| 115 | new ClassFilter<Element>(Element.class); | |
| 116 | ||
| 117 | 1 | private static final Filter<Document> fdocument = |
| 118 | new ClassFilter<Document>(Document.class); | |
| 119 | ||
| 120 | 1 | private static final Filter<Double> fdouble = |
| 121 | new ClassFilter<Double>(Double.class); | |
| 122 | ||
| 123 | 1 | private static final Filter<Boolean> fboolean = |
| 124 | new ClassFilter<Boolean>(Boolean.class); | |
| 125 | ||
| 126 | 1 | private static final Filter<String> fstring = |
| 127 | new ClassFilter<String>(String.class); | |
| 128 | ||
| 129 | 1 | private static final Filter<Object> fpassthrough = |
| 130 | new PassThroughFilter(); | |
| 131 | ||
| 132 | ||
| 133 | 0 | private Filters() { |
| 134 | // do nothing... make instances impossible. | |
| 135 | 0 | } |
| 136 | ||
| 137 | /** | |
| 138 | * Return a Filter that matches any {@link Content} data. | |
| 139 | * | |
| 140 | * @return a Filter that matches any {@link Content} data. | |
| 141 | */ | |
| 142 | public static final Filter<Content> content() { | |
| 143 | 398 | return fcontent; |
| 144 | } | |
| 145 | ||
| 146 | /** | |
| 147 | * Return a Filter that matches any {@link Attribute} data. | |
| 148 | * | |
| 149 | * @return a Filter that matches any {@link Attribute} data. | |
| 150 | */ | |
| 151 | public static final Filter<Attribute> attribute() { | |
| 152 | 37 | return fattribute; |
| 153 | } | |
| 154 | ||
| 155 | /** | |
| 156 | * Return a Filter that matches any {@link Attribute} data with the | |
| 157 | * specified name. | |
| 158 | * | |
| 159 | * @param name The name for all the Attributes to have (these can be in any | |
| 160 | * Namespace). | |
| 161 | * @return a Filter that matches any {@link Attribute} data with the | |
| 162 | * specified name. | |
| 163 | */ | |
| 164 | public static final Filter<Attribute> attribute(String name) { | |
| 165 | 1 | return new AttributeFilter(name); |
| 166 | } | |
| 167 | ||
| 168 | /** | |
| 169 | * Return a Filter that matches any {@link Attribute} data with the | |
| 170 | * specified name and namespace. | |
| 171 | * | |
| 172 | * @param name The name for all the Attributes to have. | |
| 173 | * @param ns The Namespace for all the Attributes to have. | |
| 174 | * @return a Filter that matches any {@link Attribute} data with the | |
| 175 | * specified name and namespace. | |
| 176 | */ | |
| 177 | public static final Filter<Attribute> attribute(String name, Namespace ns) { | |
| 178 | 7 | return new AttributeFilter(name, ns); |
| 179 | } | |
| 180 | ||
| 181 | /** | |
| 182 | * Return a Filter that matches any {@link Attribute} data with the | |
| 183 | * specified namespace. | |
| 184 | * | |
| 185 | * @param ns The Namespace for all the Attributes to have. | |
| 186 | * @return a Filter that matches any {@link Attribute} data with the | |
| 187 | * specified namespace. | |
| 188 | */ | |
| 189 | public static final Filter<Attribute> attribute(Namespace ns) { | |
| 190 | 2 | return new AttributeFilter(ns); |
| 191 | } | |
| 192 | ||
| 193 | /** | |
| 194 | * Return a Filter that matches any {@link Comment} data. | |
| 195 | * | |
| 196 | * @return a Filter that matches any {@link Comment} data. | |
| 197 | */ | |
| 198 | public static final Filter<Comment> comment() { | |
| 199 | 326 | return fcomment; |
| 200 | } | |
| 201 | ||
| 202 | /** | |
| 203 | * Return a Filter that matches any {@link CDATA} data. | |
| 204 | * | |
| 205 | * @return a Filter that matches any {@link CDATA} data. | |
| 206 | */ | |
| 207 | public static final Filter<CDATA> cdata() { | |
| 208 | 3 | return fcdata; |
| 209 | } | |
| 210 | ||
| 211 | /** | |
| 212 | * Return a Filter that matches any {@link DocType} data. | |
| 213 | * | |
| 214 | * @return a Filter that matches any {@link DocType} data. | |
| 215 | */ | |
| 216 | public static final Filter<DocType> doctype() { | |
| 217 | 1 | return fdoctype; |
| 218 | } | |
| 219 | ||
| 220 | /** | |
| 221 | * Return a Filter that matches any {@link EntityRef} data. | |
| 222 | * | |
| 223 | * @return a Filter that matches any {@link EntityRef} data. | |
| 224 | */ | |
| 225 | public static final Filter<EntityRef> entityref() { | |
| 226 | 1 | return fentityref; |
| 227 | } | |
| 228 | ||
| 229 | /** | |
| 230 | * Return a Filter that matches any {@link Element} data. | |
| 231 | * | |
| 232 | * @return a Filter that matches any {@link Element} data. | |
| 233 | */ | |
| 234 | public static final Filter<Element> element() { | |
| 235 | 90 | return felement; |
| 236 | } | |
| 237 | ||
| 238 | /** | |
| 239 | * Return a Filter that matches any {@link Document} data. | |
| 240 | * | |
| 241 | * @return a Filter that matches any {@link Document} data. | |
| 242 | */ | |
| 243 | public static final Filter<Document> document() { | |
| 244 | 1 | return fdocument; |
| 245 | } | |
| 246 | ||
| 247 | /** | |
| 248 | * Return a Filter that matches any {@link Element} data with the specified | |
| 249 | * name. | |
| 250 | * | |
| 251 | * @param name The name of Elements to match. | |
| 252 | * @return a Filter that matches any {@link Element} data with the specified | |
| 253 | * name. | |
| 254 | */ | |
| 255 | public static final Filter<Element> element(String name) { | |
| 256 | 9 | return new ElementFilter(name, Namespace.NO_NAMESPACE); |
| 257 | } | |
| 258 | ||
| 259 | /** | |
| 260 | * Return a Filter that matches any {@link Element} data with the specified | |
| 261 | * name and Namespace. | |
| 262 | * | |
| 263 | * @param name The name of Elements to match. | |
| 264 | * @param ns The Namespace to match | |
| 265 | * @return a Filter that matches any {@link Element} data with the specified | |
| 266 | * name and Namespace. | |
| 267 | */ | |
| 268 | public static final Filter<Element> element(String name, Namespace ns) { | |
| 269 | 4 | return new ElementFilter(name, ns); |
| 270 | } | |
| 271 | ||
| 272 | /** | |
| 273 | * Return a Filter that matches any {@link Element} data with the specified | |
| 274 | * Namespace. | |
| 275 | * | |
| 276 | * @param ns The Namespace to match | |
| 277 | * @return a Filter that matches any {@link Element} data with the specified | |
| 278 | * Namespace. | |
| 279 | */ | |
| 280 | public static final Filter<Element> element(Namespace ns) { | |
| 281 | 3 | return new ElementFilter(null, ns); |
| 282 | } | |
| 283 | ||
| 284 | /** | |
| 285 | * Return a Filter that matches any {@link ProcessingInstruction} data. | |
| 286 | * | |
| 287 | * @return a Filter that matches any {@link ProcessingInstruction} data. | |
| 288 | */ | |
| 289 | public static final Filter<ProcessingInstruction> processinginstruction() { | |
| 290 | 217 | return fpi; |
| 291 | } | |
| 292 | ||
| 293 | /** | |
| 294 | * Return a Filter that matches any {@link Text} data (which includes | |
| 295 | * {@link CDATA} since that is a subclass of Text). | |
| 296 | * | |
| 297 | * @return a Filter that matches any {@link Text} data (which includes | |
| 298 | * {@link CDATA} since that is a subclass of Text). | |
| 299 | */ | |
| 300 | public static final Filter<Text> text() { | |
| 301 | 2578 | return ftext; |
| 302 | } | |
| 303 | ||
| 304 | /** | |
| 305 | * Return a Filter that matches any {@link Text} data (excludes | |
| 306 | * {@link CDATA} instances). | |
| 307 | * | |
| 308 | * @return a Filter that matches any {@link Text} data (which excludes | |
| 309 | * {@link CDATA} instances). | |
| 310 | */ | |
| 311 | public static final Filter<Text> textOnly() { | |
| 312 | 1 | return ftextonly; |
| 313 | } | |
| 314 | ||
| 315 | /** | |
| 316 | * Return a Filter that matches any Boolean data. | |
| 317 | * | |
| 318 | * @return a Filter that matches any Boolean data. | |
| 319 | */ | |
| 320 | public static final Filter<Boolean> fboolean() { | |
| 321 | 1 | return fboolean; |
| 322 | } | |
| 323 | ||
| 324 | /** | |
| 325 | * Return a Filter that matches any String data. | |
| 326 | * | |
| 327 | * @return a Filter that matches any String data. | |
| 328 | */ | |
| 329 | public static final Filter<String> fstring() { | |
| 330 | 43 | return fstring; |
| 331 | } | |
| 332 | ||
| 333 | /** | |
| 334 | * Return a Filter that matches any Double data. | |
| 335 | * | |
| 336 | * @return a Filter that matches any Double data. | |
| 337 | */ | |
| 338 | public static final Filter<Double> fdouble() { | |
| 339 | 11 | return fdouble; |
| 340 | } | |
| 341 | ||
| 342 | /** | |
| 343 | * Return a Filter that matches any data of the specified Class. | |
| 344 | * | |
| 345 | * @param <F> The generic type of the content returned by this Filter | |
| 346 | * @param clazz the Class type to match in the filter | |
| 347 | * @return a Filter that matches any data of the specified Class. | |
| 348 | */ | |
| 349 | public static final <F> Filter<F> fclass(Class<F> clazz) { | |
| 350 | 1 | return new ClassFilter<F>(clazz); |
| 351 | } | |
| 352 | ||
| 353 | /** | |
| 354 | * Return a filter that does no filtering at all - everything matches. | |
| 355 | * @return A Pass-Through Filter. | |
| 356 | */ | |
| 357 | public static final Filter<Object> fpassthrough() { | |
| 358 | 6163 | return fpassthrough; |
| 359 | } | |
| 360 | ||
| 361 | } |