Mercurial > hg4j

comparison src/org/tmatesoft/hg/repo/Revlog.java @ 347:8da7ade36c57

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add specific IAE subclass to handle wrong (e.g. outdated after rollback) revisions
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 22 Nov 2011 05:25:57 +0100
parents a674b8590362
children 5f9073eabf06
comparison
equal deleted inserted replaced
346:6d2c6b2469fc 347:8da7ade36c57
28 import java.util.LinkedList; 28 import java.util.LinkedList;
29 import java.util.List; 29 import java.util.List;
30 30
31 import org.tmatesoft.hg.core.HgBadStateException; 31 import org.tmatesoft.hg.core.HgBadStateException;
32 import org.tmatesoft.hg.core.HgException; 32 import org.tmatesoft.hg.core.HgException;
33 import org.tmatesoft.hg.core.HgInvalidRevisionException;
33 import org.tmatesoft.hg.core.Nodeid; 34 import org.tmatesoft.hg.core.Nodeid;
34 import org.tmatesoft.hg.internal.ArrayHelper; 35 import org.tmatesoft.hg.internal.ArrayHelper;
35 import org.tmatesoft.hg.internal.DataAccess; 36 import org.tmatesoft.hg.internal.DataAccess;
36 import org.tmatesoft.hg.internal.Experimental; 37 import org.tmatesoft.hg.internal.Experimental;
37 import org.tmatesoft.hg.internal.RevlogStream; 38 import org.tmatesoft.hg.internal.RevlogStream;
84 85
85 public final int getLastRevision() { 86 public final int getLastRevision() {
86 return content.revisionCount() - 1; 87 return content.revisionCount() - 1;
87 } 88 }
88 89
89 public final Nodeid getRevision(int revision) { 90 public final Nodeid getRevision(int revision) throws HgInvalidRevisionException {
90 // XXX cache nodeids? Rather, if context.getCache(this).getRevisionMap(create == false) != null, use it 91 // XXX cache nodeids? Rather, if context.getCache(this).getRevisionMap(create == false) != null, use it
91 return Nodeid.fromBinary(content.nodeid(revision), 0); 92 return Nodeid.fromBinary(content.nodeid(revision), 0);
92 } 93 }
93 94
94 /** 95 /**
95 * FIXME need to be careful about (1) ordering of the revisions in the return list; (2) modifications (sorting) of the argument array 96 * FIXME need to be careful about (1) ordering of the revisions in the return list; (2) modifications (sorting) of the argument array
96 */ 97 */
97 public final List<Nodeid> getRevisions(int... revisions) { 98 public final List<Nodeid> getRevisions(int... revisions) throws HgInvalidRevisionException {
98 ArrayList<Nodeid> rv = new ArrayList<Nodeid>(revisions.length); 99 ArrayList<Nodeid> rv = new ArrayList<Nodeid>(revisions.length);
99 Arrays.sort(revisions); 100 Arrays.sort(revisions);
100 getRevisionsInternal(rv, revisions); 101 getRevisionsInternal(rv, revisions);
101 return rv; 102 return rv;
102 } 103 }
103 104
104 /*package-local*/ void getRevisionsInternal(final List<Nodeid> retVal, int[] sortedRevs) { 105 /*package-local*/ void getRevisionsInternal(final List<Nodeid> retVal, int[] sortedRevs) throws HgInvalidRevisionException {
105 // once I have getRevisionMap and may find out whether it is avalable from cache, 106 // once I have getRevisionMap and may find out whether it is avalable from cache,
106 // may use it, perhaps only for small number of revisions 107 // may use it, perhaps only for small number of revisions
107 content.iterate(sortedRevs, false, new RevlogStream.Inspector() { 108 content.iterate(sortedRevs, false, new RevlogStream.Inspector() {
108 109
109 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess data) { 110 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess data) {
112 }); 113 });
113 } 114 }
114 115
115 /** 116 /**
116 * Get local revision number (index) of the specified revision. 117 * Get local revision number (index) of the specified revision.
118 * If unsure, use {@link #isKnown(Nodeid)} to find out whether nodeid belongs to this revlog.
117 * 119 *
118 * For occasional queries, this method works with decent performance, despite its O(n/2) approach. 120 * For occasional queries, this method works with decent performance, despite its O(n/2) approach.
119 * Alternatively, if you need to perform multiple queries (e.g. at least 15-20), {@link RevisionMap} may come handy. 121 * Alternatively, if you need to perform multiple queries (e.g. at least 15-20), {@link RevisionMap} may come handy.
120 * 122 *
121 * @param nid revision to look up 123 * @param nid revision to look up
122 * @return revision index, or {@link HgRepository#BAD_REVISION} if specified revision not found. 124 * @return revision local index in this revlog
123 */ 125 * @throws HgInvalidRevisionException if supplied nodeid doesn't identify any revision from this revlog
124 public final int getLocalRevision(Nodeid nid) { 126 */
127 public final int getLocalRevision(Nodeid nid) throws HgInvalidRevisionException {
125 int revision = content.findLocalRevisionNumber(nid); 128 int revision = content.findLocalRevisionNumber(nid);
126 if (revision == BAD_REVISION) { 129 if (revision == BAD_REVISION) {
127 throw new IllegalArgumentException(String.format("%s doesn't represent a revision of %s", nid.toString(), this /*XXX HgDataFile.getPath might be more suitable here*/)); 130 throw new HgInvalidRevisionException(String.format("Bad revision of %s", this /*XXX HgDataFile.getPath might be more suitable here*/), nid, null);
128 } 131 }
129 return revision; 132 return revision;
130 } 133 }
131 134
132 // Till now, i follow approach that NULL nodeid is never part of revlog 135 // Till now, i follow approach that NULL nodeid is never part of revlog
144 147
145 /** 148 /**
146 * Access to revision data as is (decompressed, but otherwise unprocessed, i.e. not parsed for e.g. changeset or manifest entries) 149 * Access to revision data as is (decompressed, but otherwise unprocessed, i.e. not parsed for e.g. changeset or manifest entries)
147 * @param nodeid 150 * @param nodeid
148 */ 151 */
149 protected void rawContent(Nodeid nodeid, ByteChannel sink) throws HgException, IOException, CancelledException { 152 protected void rawContent(Nodeid nodeid, ByteChannel sink) throws HgException, IOException, CancelledException, HgInvalidRevisionException {
150 rawContent(getLocalRevision(nodeid), sink); 153 rawContent(getLocalRevision(nodeid), sink);
151 } 154 }
152 155
153 /** 156 /**
154 * @param revision - repo-local index of this file change (not a changelog revision number!) 157 * @param revision - repo-local index of this file change (not a changelog revision number!)
155 */ 158 */
156 protected void rawContent(int revision, ByteChannel sink) throws HgException, IOException, CancelledException { 159 protected void rawContent(int revision, ByteChannel sink) throws HgException, IOException, CancelledException, HgInvalidRevisionException {
157 if (sink == null) { 160 if (sink == null) {
158 throw new IllegalArgumentException(); 161 throw new IllegalArgumentException();
159 } 162 }
160 ContentPipe insp = new ContentPipe(sink, 0); 163 ContentPipe insp = new ContentPipe(sink, 0);
161 insp.checkCancelled(); 164 insp.checkCancelled();
168 * 171 *
169 * @param revision - revision to query parents, or {@link HgRepository#TIP} 172 * @param revision - revision to query parents, or {@link HgRepository#TIP}
170 * @param parentRevisions - int[2] to get local revision numbers of parents (e.g. {6, -1}) 173 * @param parentRevisions - int[2] to get local revision numbers of parents (e.g. {6, -1})
171 * @param parent1 - byte[20] or null, if parent's nodeid is not needed 174 * @param parent1 - byte[20] or null, if parent's nodeid is not needed
172 * @param parent2 - byte[20] or null, if second parent's nodeid is not needed 175 * @param parent2 - byte[20] or null, if second parent's nodeid is not needed
173 * @return 176 * @throws HgInvalidRevisionException
174 */ 177 * @throws IllegalArgumentException
175 public void parents(int revision, int[] parentRevisions, byte[] parent1, byte[] parent2) { 178 */
179 public void parents(int revision, int[] parentRevisions, byte[] parent1, byte[] parent2) throws HgInvalidRevisionException {
176 if (revision != TIP && !(revision >= 0 && revision < content.revisionCount())) { 180 if (revision != TIP && !(revision >= 0 && revision < content.revisionCount())) {
177 throw new IllegalArgumentException(String.valueOf(revision)); 181 throw new HgInvalidRevisionException(revision);
178 } 182 }
179 if (parentRevisions == null || parentRevisions.length < 2) { 183 if (parentRevisions == null || parentRevisions.length < 2) {
180 throw new IllegalArgumentException(String.valueOf(parentRevisions)); 184 throw new IllegalArgumentException(String.valueOf(parentRevisions));
181 } 185 }
182 if (parent1 != null && parent1.length < 20) { 186 if (parent1 != null && parent1.length < 20) {
219 } 223 }
220 } 224 }
221 } 225 }
222 226
223 @Experimental 227 @Experimental
224 public void walk(int start, int end, final Revlog.Inspector inspector) { 228 public void walk(int start, int end, final Revlog.Inspector inspector) throws HgInvalidRevisionException {
225 int lastRev = getLastRevision(); 229 int lastRev = getLastRevision();
226 if (start == TIP) { 230 if (start == TIP) {
227 start = lastRev; 231 start = lastRev;
228 } 232 }
229 if (end == TIP) { 233 if (end == TIP) {