Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
Passage |
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| 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 | } |