| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| Passage |
|
| 1.0;1 |
| 1 | /** | |
| 2 | * Distribution License: | |
| 3 | * JSword is free software; you can redistribute it and/or modify it under | |
| 4 | * the terms of the GNU Lesser General Public License, version 2.1 or later | |
| 5 | * as published by the Free Software Foundation. This program is distributed | |
| 6 | * in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even | |
| 7 | * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
| 8 | * See the GNU Lesser General Public License for more details. | |
| 9 | * | |
| 10 | * The License is available on the internet at: | |
| 11 | * http://www.gnu.org/copyleft/lgpl.html | |
| 12 | * or by writing to: | |
| 13 | * Free Software Foundation, Inc. | |
| 14 | * 59 Temple Place - Suite 330 | |
| 15 | * Boston, MA 02111-1307, USA | |
| 16 | * | |
| 17 | * © CrossWire Bible Society, 2005 - 2016 | |
| 18 | * | |
| 19 | */ | |
| 20 | package org.crosswire.jsword.passage; | |
| 21 | ||
| 22 | import java.io.IOException; | |
| 23 | import java.io.Reader; | |
| 24 | import java.io.Writer; | |
| 25 | import java.util.Iterator; | |
| 26 | ||
| 27 | /** | |
| 28 | * A Passage is a specialized Collection of Verses. The additions are: | |
| 29 | * <ul> | |
| 30 | * <li>List blurring | |
| 31 | * <li>Range Counting and iteration (in addition to Verse counting etc) | |
| 32 | * <li>List change notification, so you can register to update yourself, and | |
| 33 | * this goes hand in hand with a added thread-safe contract. | |
| 34 | * <li>getName() to be more VerseBase like. | |
| 35 | * <li>Human readable serialization. So we can read and write to and from OLB | |
| 36 | * style Passage files. | |
| 37 | * </ul> | |
| 38 | * | |
| 39 | * <p> | |
| 40 | * Passage no longer extends the Collection interface to avoid J2SE 1.1/1.2 | |
| 41 | * portability problems, and because many of the things that a Passage does rely | |
| 42 | * on consecutive Verses which are an alien concept to Collections. So users | |
| 43 | * would have to use the Passage interface anyway. | |
| 44 | * | |
| 45 | * <p> | |
| 46 | * Other arguments for and against. | |
| 47 | * <ul> | |
| 48 | * <li>The generic version will postpone some type errors to runtime. Is this a | |
| 49 | * huge problem? Are there many syntax errors that would be lost? Probably not. | |
| 50 | * <li>The specific version would stop enhancements like add("Gen 1:1"); (But | |
| 51 | * this is just syntactical sugar anyway). | |
| 52 | * <li>The specific version allows functionality by is-a as well as has-a. But a | |
| 53 | * Passage is fundamentally different so this is not that much use. | |
| 54 | * <li>At the end of the day I expect people to use getName() instead of | |
| 55 | * toString() and blur(), both of which are Passage things not Collection | |
| 56 | * things. So the general use of these classes is via a Passage interface not a | |
| 57 | * Collections one. | |
| 58 | * <li>Note that the implementations of Passage could not adhere strictly to the | |
| 59 | * Collections interface in returning false from add(), remove() etc, to specify | |
| 60 | * if the Collection was changed. Given ranges and the like this can get very | |
| 61 | * time consuming and complex. | |
| 62 | * </ul> | |
| 63 | * | |
| 64 | * <p> | |
| 65 | * The upshot of all this is that I am removing the Collections interface from | |
| 66 | * Passage. | |
| 67 | * | |
| 68 | * <p> | |
| 69 | * I considered giving Passages names to allow for a CLI that could use named | |
| 70 | * RangedPassages, however that is perhaps better left to another class. | |
| 71 | * | |
| 72 | * @see gnu.lgpl.License The GNU Lesser General Public License for details. | |
| 73 | * @author Joe Walker | |
| 74 | */ | |
| 75 | public interface Passage extends VerseKey<Passage> { | |
| 76 | /** | |
| 77 | * A summary of the verses in this Passage For example | |
| 78 | * "10 verses in 4 books" | |
| 79 | * | |
| 80 | * @return a String containing an overview of the verses | |
| 81 | */ | |
| 82 | String getOverview(); | |
| 83 | ||
| 84 | /** | |
| 85 | * Returns the number of verses in this collection. Like Collection.size() | |
| 86 | * This does not mean the Passage needs to use Verses, just that it | |
| 87 | * understands the concept. | |
| 88 | * | |
| 89 | * @return the number of Verses in this collection | |
| 90 | * @see Verse | |
| 91 | */ | |
| 92 | int countVerses(); | |
| 93 | ||
| 94 | /** | |
| 95 | * Determine whether there are two or more ranges. | |
| 96 | * | |
| 97 | * @param restrict | |
| 98 | * Do we break ranges at chapter/book boundaries | |
| 99 | * @return whether there are two or more ranges | |
| 100 | * @see VerseRange | |
| 101 | */ | |
| 102 | boolean hasRanges(RestrictionType restrict); | |
| 103 | ||
| 104 | /** | |
| 105 | * Like countVerses() that counts VerseRanges instead of Verses Returns the | |
| 106 | * number of fragments in this collection. This does not mean the Passage | |
| 107 | * needs to use VerseRanges, just that it understands the concept. | |
| 108 | * | |
| 109 | * @param restrict | |
| 110 | * Do we break ranges at chapter/book boundaries | |
| 111 | * @return the number of VerseRanges in this collection | |
| 112 | * @see VerseRange | |
| 113 | */ | |
| 114 | int countRanges(RestrictionType restrict); | |
| 115 | ||
| 116 | /** | |
| 117 | * Ensures that there are a maximum of <code>count</code> Verses in this | |
| 118 | * Passage. If there were more than <code>count</code> Verses then a new | |
| 119 | * Passage is created containing the Verses from <code>count</code>+1 | |
| 120 | * onwards. If there was not greater than <code>count</code> in the Passage, | |
| 121 | * then the passage remains unchanged, and null is returned. | |
| 122 | * | |
| 123 | * @param count | |
| 124 | * The maximum number of Verses to allow in this collection | |
| 125 | * @return A new Passage containing the remaining verses or null | |
| 126 | * @see Verse | |
| 127 | */ | |
| 128 | Passage trimVerses(int count); | |
| 129 | ||
| 130 | /** | |
| 131 | * Ensures that there are a maximum of <code>count</code> VerseRanges in | |
| 132 | * this Passage. If there were more than <code>count</code> VerseRanges then | |
| 133 | * a new Passage is created containing the VerseRanges from | |
| 134 | * <code>count</code>+1 onwards. If there was not greater than | |
| 135 | * <code>count</code> in the Passage, then the passage remains unchanged, | |
| 136 | * and null is returned. | |
| 137 | * | |
| 138 | * @param count | |
| 139 | * The maximum number of VerseRanges to allow in this collection | |
| 140 | * @param restrict | |
| 141 | * Do we break ranges at chapter/book boundaries | |
| 142 | * @return A new Passage containing the remaining verses or null | |
| 143 | * @see VerseRange | |
| 144 | */ | |
| 145 | Passage trimRanges(int count, RestrictionType restrict); | |
| 146 | ||
| 147 | /** | |
| 148 | * How many books are there in this Passage | |
| 149 | * | |
| 150 | * @return The number of distinct books | |
| 151 | */ | |
| 152 | int booksInPassage(); | |
| 153 | ||
| 154 | /** | |
| 155 | * Get a specific Verse from this collection | |
| 156 | * | |
| 157 | * @param offset | |
| 158 | * The verse offset (legal values are 0 to countVerses()-1) | |
| 159 | * @return The Verse | |
| 160 | * @throws ArrayIndexOutOfBoundsException | |
| 161 | * If the offset is out of range | |
| 162 | */ | |
| 163 | Verse getVerseAt(int offset) throws ArrayIndexOutOfBoundsException; | |
| 164 | ||
| 165 | /** | |
| 166 | * Get a specific VerseRange from this collection | |
| 167 | * | |
| 168 | * @param offset | |
| 169 | * The verse range offset (legal values are 0 to countRanges()-1) | |
| 170 | * @param restrict | |
| 171 | * Do we break ranges at chapter/book boundaries | |
| 172 | * @return The Verse Range | |
| 173 | * @throws ArrayIndexOutOfBoundsException | |
| 174 | * If the offset is out of range | |
| 175 | */ | |
| 176 | VerseRange getRangeAt(int offset, RestrictionType restrict) throws ArrayIndexOutOfBoundsException; | |
| 177 | ||
| 178 | /** | |
| 179 | * Like iterator() that iterates over VerseRanges instead of Verses. | |
| 180 | * Exactly the same data will be traversed, however using rangeIterator() | |
| 181 | * will usually give fewer iterations (and never more) | |
| 182 | * | |
| 183 | * @param restrict | |
| 184 | * Do we break ranges over chapters | |
| 185 | * @return A list enumerator | |
| 186 | */ | |
| 187 | Iterator<VerseRange> rangeIterator(RestrictionType restrict); | |
| 188 | ||
| 189 | /** | |
| 190 | * Returns true if this collection contains all the specified Verse | |
| 191 | * | |
| 192 | * @param that | |
| 193 | * Verse or VerseRange that may exist in this Passage | |
| 194 | * @return true if this collection contains that | |
| 195 | */ | |
| 196 | boolean contains(Key that); | |
| 197 | ||
| 198 | /** | |
| 199 | * Add this Verse/VerseRange to this Passage | |
| 200 | * | |
| 201 | * @param that | |
| 202 | * The Verses to be added from this Passage | |
| 203 | */ | |
| 204 | void add(Key that); | |
| 205 | ||
| 206 | /** | |
| 207 | * Remove this Verse/VerseRange from this Passage | |
| 208 | * | |
| 209 | * @param that | |
| 210 | * The Verses to be removed from this Passage | |
| 211 | */ | |
| 212 | void remove(Key that); | |
| 213 | ||
| 214 | /** | |
| 215 | * Returns true if this Passage contains all of the verses in that Passage | |
| 216 | * | |
| 217 | * @param that | |
| 218 | * Passage to be checked for containment in this collection. | |
| 219 | * @return true if this reference contains all of the Verses in that Passage | |
| 220 | */ | |
| 221 | boolean containsAll(Passage that); | |
| 222 | ||
| 223 | /** | |
| 224 | * To be compatible with humans we read/write ourselves to a file that a | |
| 225 | * human can read and even edit. OLB verse.lst integration is a good goal | |
| 226 | * here. | |
| 227 | * | |
| 228 | * @param in | |
| 229 | * The stream to read from | |
| 230 | * @exception java.io.IOException | |
| 231 | * If the file/network etc breaks | |
| 232 | * @exception NoSuchVerseException | |
| 233 | * If the file was invalid | |
| 234 | */ | |
| 235 | void readDescription(Reader in) throws IOException, NoSuchVerseException; | |
| 236 | ||
| 237 | /** | |
| 238 | * To be compatible with humans we read/write ourselves to a file that a | |
| 239 | * human can read and even edit. OLB verse.lst integration is a good goal | |
| 240 | * here. | |
| 241 | * | |
| 242 | * @param out | |
| 243 | * The stream to write to | |
| 244 | * @exception java.io.IOException | |
| 245 | * If the file/network etc breaks | |
| 246 | */ | |
| 247 | void writeDescription(Writer out) throws IOException; | |
| 248 | ||
| 249 | /** | |
| 250 | * For performance reasons we may well want to hint to the Passage that we | |
| 251 | * have done editing it for now and that it is safe to cache certain values | |
| 252 | * to speed up future reads. Any action taken by this method will be undone | |
| 253 | * simply by making a future edit, and the only loss in calling | |
| 254 | * optimizeReads() is a loss of time if you then persist in writing to the | |
| 255 | * Passage. | |
| 256 | */ | |
| 257 | void optimizeReads(); | |
| 258 | ||
| 259 | /** | |
| 260 | * Event Listeners - Add Listener | |
| 261 | * | |
| 262 | * @param li | |
| 263 | * The listener to add | |
| 264 | */ | |
| 265 | void addPassageListener(PassageListener li); | |
| 266 | ||
| 267 | /** | |
| 268 | * Event Listeners - Remove Listener | |
| 269 | * | |
| 270 | * @param li | |
| 271 | * The listener to remove | |
| 272 | */ | |
| 273 | void removePassageListener(PassageListener li); | |
| 274 | } |