| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| StateOldDirty |
|
| 1.0;1 |
| 1 | package org.apache.ojb.odmg.states; | |
| 2 | ||
| 3 | /* Copyright 2002-2005 The Apache Software Foundation | |
| 4 | * | |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 6 | * you may not use this file except in compliance with the License. | |
| 7 | * You may obtain a copy of the License at | |
| 8 | * | |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 | * | |
| 11 | * Unless required by applicable law or agreed to in writing, software | |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 | * See the License for the specific language governing permissions and | |
| 15 | * limitations under the License. | |
| 16 | */ | |
| 17 | ||
| 18 | import org.apache.ojb.odmg.ObjectEnvelope; | |
| 19 | ||
| 20 | /** | |
| 21 | * this state represents old objects which have been altered during tx. | |
| 22 | */ | |
| 23 | public class StateOldDirty extends ModificationState | |
| 24 | { | |
| 25 | ||
| 26 | /** | |
| 27 | * return resulting state after marking clean | |
| 28 | */ | |
| 29 | public ModificationState markClean() | |
| 30 | { | |
| 31 | return this; | |
| 32 | } | |
| 33 | ||
| 34 | /** | |
| 35 | * return resulting state after marking delete | |
| 36 | */ | |
| 37 | public ModificationState markDelete() | |
| 38 | { | |
| 39 | return StateOldDelete.getInstance(); | |
| 40 | } | |
| 41 | ||
| 42 | /** | |
| 43 | * return resulting state after marking dirty | |
| 44 | */ | |
| 45 | public ModificationState markDirty() | |
| 46 | { | |
| 47 | return this; | |
| 48 | } | |
| 49 | ||
| 50 | /** | |
| 51 | * return resulting state after marking new | |
| 52 | */ | |
| 53 | public ModificationState markNew() | |
| 54 | { | |
| 55 | return this; | |
| 56 | } | |
| 57 | ||
| 58 | /** | |
| 59 | * return resulting state after marking old | |
| 60 | */ | |
| 61 | public ModificationState markOld() | |
| 62 | { | |
| 63 | return this; | |
| 64 | } | |
| 65 | ||
| 66 | private static StateOldDirty _instance = new StateOldDirty(); | |
| 67 | ||
| 68 | /** | |
| 69 | * private constructor: use singleton instance | |
| 70 | */ | |
| 71 | private StateOldDirty() | |
| 72 | { | |
| 73 | } | |
| 74 | ||
| 75 | /** | |
| 76 | * perform a checkpoint, i.e. perform updates on underlying db but keep locks on objects | |
| 77 | */ | |
| 78 | public static StateOldDirty getInstance() | |
| 79 | { | |
| 80 | return _instance; | |
| 81 | } | |
| 82 | ||
| 83 | /** | |
| 84 | * checkpoint the transaction | |
| 85 | */ | |
| 86 | public void checkpoint(ObjectEnvelope mod) | |
| 87 | throws org.apache.ojb.broker.PersistenceBrokerException | |
| 88 | { | |
| 89 | mod.doUpdate(); | |
| 90 | } | |
| 91 | ||
| 92 | ||
| 93 | /** | |
| 94 | * commit the associated transaction | |
| 95 | */ | |
| 96 | public void commit(ObjectEnvelope mod) throws org.apache.ojb.broker.PersistenceBrokerException | |
| 97 | { | |
| 98 | mod.doUpdate(); | |
| 99 | mod.setModificationState(StateOldClean.getInstance()); | |
| 100 | } | |
| 101 | ||
| 102 | /** | |
| 103 | * rollback transaction. | |
| 104 | */ | |
| 105 | public void rollback(ObjectEnvelope mod) | |
| 106 | { | |
| 107 | mod.doEvictFromCache(); | |
| 108 | /* | |
| 109 | arminw: we can't really restore object state with all dependencies and fields | |
| 110 | without having a deep copy of the clean object. To avoid side-effects disable this | |
| 111 | feature | |
| 112 | */ | |
| 113 | // // Call added to rollback the object itself so it has the previous values again when it is used further on. | |
| 114 | // mod.rollback(); | |
| 115 | } | |
| 116 | ||
| 117 | /* | |
| 118 | * @see ModificationState#needsUpdate() | |
| 119 | */ | |
| 120 | public boolean needsUpdate() | |
| 121 | { | |
| 122 | return true; | |
| 123 | } | |
| 124 | ||
| 125 | } |