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comparison src/org/tmatesoft/hg/internal/RevlogStream.java @ 295:981f9f50bb6c

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Issue 11: Error log facility. SessionContext to share common facilities
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 16 Sep 2011 05:35:32 +0200
parents b11f6a08f748
children e7ca6f16d074
comparison
equal deleted inserted replaced
294:32890bab7209 295:981f9f50bb6c
77 public int revisionCount() { 77 public int revisionCount() {
78 initOutline(); 78 initOutline();
79 return baseRevisions.length; 79 return baseRevisions.length;
80 } 80 }
81 81
82 /**
83 * @throws HgBadStateException if internal read operation failed
84 */
82 public int dataLength(int revision) { 85 public int dataLength(int revision) {
83 // XXX in fact, use of iterate() instead of this implementation may be quite reasonable. 86 // XXX in fact, use of iterate() instead of this implementation may be quite reasonable.
84 // 87 //
85 final int indexSize = revisionCount(); 88 final int indexSize = revisionCount();
86 DataAccess daIndex = getIndexStream(); 89 DataAccess daIndex = getIndexStream();
92 daIndex.seek(recordOffset + 12); // 6+2+4 95 daIndex.seek(recordOffset + 12); // 6+2+4
93 int actualLen = daIndex.readInt(); 96 int actualLen = daIndex.readInt();
94 return actualLen; 97 return actualLen;
95 } catch (IOException ex) { 98 } catch (IOException ex) {
96 ex.printStackTrace(); // log error. FIXME better handling 99 ex.printStackTrace(); // log error. FIXME better handling
97 throw new IllegalStateException(ex); 100 throw new HgBadStateException(ex);
98 } finally { 101 } finally {
99 daIndex.done(); 102 daIndex.done();
100 } 103 }
101 } 104 }
102 105
106 /**
107 * @throws HgBadStateException if internal read operation failed
108 */
103 public byte[] nodeid(int revision) { 109 public byte[] nodeid(int revision) {
104 final int indexSize = revisionCount(); 110 final int indexSize = revisionCount();
105 if (revision == TIP) { 111 if (revision == TIP) {
106 revision = indexSize - 1; 112 revision = indexSize - 1;
107 } 113 }
115 byte[] rv = new byte[20]; 121 byte[] rv = new byte[20];
116 daIndex.readBytes(rv, 0, 20); 122 daIndex.readBytes(rv, 0, 20);
117 return rv; 123 return rv;
118 } catch (IOException ex) { 124 } catch (IOException ex) {
119 ex.printStackTrace(); 125 ex.printStackTrace();
120 throw new IllegalStateException(); 126 throw new HgBadStateException();
121 } finally { 127 } finally {
122 daIndex.done(); 128 daIndex.done();
123 } 129 }
124 } 130 }
125 131
132 /**
133 * Get link field from the index record.
134 * @throws HgBadStateException if internal read operation failed
135 */
126 public int linkRevision(int revision) { 136 public int linkRevision(int revision) {
127 final int last = revisionCount() - 1; 137 final int last = revisionCount() - 1;
128 if (revision == TIP) { 138 if (revision == TIP) {
129 revision = last; 139 revision = last;
130 } 140 }
137 daIndex.seek(recordOffset + 20); 147 daIndex.seek(recordOffset + 20);
138 int linkRev = daIndex.readInt(); 148 int linkRev = daIndex.readInt();
139 return linkRev; 149 return linkRev;
140 } catch (IOException ex) { 150 } catch (IOException ex) {
141 ex.printStackTrace(); 151 ex.printStackTrace();
142 throw new IllegalStateException(); 152 throw new HgBadStateException();
143 } finally { 153 } finally {
144 daIndex.done(); 154 daIndex.done();
145 } 155 }
146 } 156 }
147 157