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annotate src/org/tmatesoft/hg/core/HgChangesetTreeHandler.java @ 408:e732521a9eb4 smartgit3

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Issue 28: support hgignore entries with syntax prefix
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 16 Mar 2012 15:06:44 +0100
parents 994b5813a925
children 2747b0723867
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1 /*
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2 * Copyright (c) 2011 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.core;
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18
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19 import java.util.Collection;
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20
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21 import org.tmatesoft.hg.util.CancelledException;
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22 import org.tmatesoft.hg.util.Pair;
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23
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24 /**
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25 *
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26 * @author Artem Tikhomirov
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27 * @author TMate Software Ltd.
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28 */
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29 public interface HgChangesetTreeHandler {
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30 /**
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31 * @param entry access to various pieces of information about current tree node. Instances might be
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32 * reused across calls and shall not be kept by client's code
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33 * @throws HgCallbackTargetException.Wrap wrapper object for any exception user code may produce. Wrapped exception would get re-thrown with {@link HgCallbackTargetException}
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34 * @throws CancelledException if execution of the operation was cancelled
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35 */
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36 public void next(HgChangesetTreeHandler.TreeElement entry) throws HgCallbackTargetException.Wrap, CancelledException;
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37
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38 interface TreeElement {
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39 /**
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40 * Revision of the revlog being iterated. For example, when walking file history, return value represents file revisions.
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41 *
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42 * @return revision of the revlog being iterated.
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43 */
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44 public Nodeid fileRevision();
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45
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46 /**
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47 * @return changeset associated with the current revision
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48 * @throws HgException indicates failure dealing with Mercurial data
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49 */
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50 public HgChangeset changeset() throws HgException;
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51
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52 /**
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53 * Lightweight alternative to {@link #changeset()}, identifies changeset in which current file node has been modified
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54 * @return changeset {@link Nodeid}
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55 */
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56 public Nodeid changesetRevision();
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57
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58 /**
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59 * Node, these are not necessarily in direct relation to parents of changeset from {@link #changeset()}
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60 * @return changesets that correspond to parents of the current file node, either pair element may be <code>null</code>.
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61 * @throws HgException indicates failure dealing with Mercurial data
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62 */
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63 public Pair<HgChangeset, HgChangeset> parents() throws HgException;
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65 /**
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66 * Lightweight alternative to {@link #parents()}, give {@link Nodeid nodeids} only
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67 * @return two values, neither is <code>null</code>, use {@link Nodeid#isNull()} to identify parent not set
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68 */
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69 public Pair<Nodeid, Nodeid> parentRevisions();
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70
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71 /**
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72 * Changes that originate from the given change and bear it as their parent.
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73 * @return collection (possibly empty) of immediate children of the change
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74 * @throws HgException indicates failure dealing with Mercurial data
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75 */
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76 public Collection<HgChangeset> children() throws HgException;
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78 /**
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79 * Lightweight alternative to {@link #children()}.
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80 * @return never <code>null</code>
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81 */
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82 public Collection<Nodeid> childRevisions();
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83 }
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84 }