| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| StateNewClean |
|
| 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 new objects which have not been altered during tx. | |
| 22 | */ | |
| 23 | public class StateNewClean extends ModificationState | |
| 24 | { | |
| 25 | private static StateNewClean _instance = new StateNewClean(); | |
| 26 | ||
| 27 | /** | |
| 28 | * private constructor: we use singleton instances | |
| 29 | */ | |
| 30 | private StateNewClean() | |
| 31 | { | |
| 32 | } | |
| 33 | ||
| 34 | /** | |
| 35 | * perform a checkpoint, i.e. perform updates on underlying db but keep locks on objects | |
| 36 | */ | |
| 37 | public static StateNewClean getInstance() | |
| 38 | { | |
| 39 | return _instance; | |
| 40 | } | |
| 41 | ||
| 42 | /** | |
| 43 | * return resulting state after marking clean | |
| 44 | */ | |
| 45 | public ModificationState markClean() | |
| 46 | { | |
| 47 | return this; | |
| 48 | } | |
| 49 | ||
| 50 | /** | |
| 51 | * return resulting state after marking delete | |
| 52 | */ | |
| 53 | public ModificationState markDelete() | |
| 54 | { | |
| 55 | return StateNewDelete.getInstance(); | |
| 56 | } | |
| 57 | ||
| 58 | /** | |
| 59 | * return resulting state after marking dirty | |
| 60 | */ | |
| 61 | public ModificationState markDirty() | |
| 62 | { | |
| 63 | return StateNewDirty.getInstance(); | |
| 64 | } | |
| 65 | ||
| 66 | /** | |
| 67 | * return resulting state after marking new | |
| 68 | */ | |
| 69 | public ModificationState markNew() | |
| 70 | { | |
| 71 | return this; | |
| 72 | } | |
| 73 | ||
| 74 | /** | |
| 75 | * return resulting state after marking old | |
| 76 | */ | |
| 77 | public ModificationState markOld() | |
| 78 | { | |
| 79 | return StateOldClean.getInstance(); | |
| 80 | } | |
| 81 | ||
| 82 | /** | |
| 83 | * object is new, thus we need an INSERT to store it | |
| 84 | */ | |
| 85 | public boolean needsInsert() | |
| 86 | { | |
| 87 | return true; | |
| 88 | } | |
| 89 | ||
| 90 | /** | |
| 91 | * checkpoint the transaction | |
| 92 | */ | |
| 93 | public void checkpoint(ObjectEnvelope mod) | |
| 94 | throws org.apache.ojb.broker.PersistenceBrokerException | |
| 95 | { | |
| 96 | mod.doInsert(); | |
| 97 | mod.setModificationState(StateOldClean.getInstance()); | |
| 98 | } | |
| 99 | ||
| 100 | ||
| 101 | /** | |
| 102 | * commit the associated transaction | |
| 103 | */ | |
| 104 | public void commit(ObjectEnvelope mod) throws org.apache.ojb.broker.PersistenceBrokerException | |
| 105 | { | |
| 106 | mod.doInsert(); | |
| 107 | mod.setModificationState(StateOldClean.getInstance()); | |
| 108 | } | |
| 109 | ||
| 110 | /** | |
| 111 | * rollback the transaction | |
| 112 | */ | |
| 113 | public void rollback(ObjectEnvelope mod) | |
| 114 | { | |
| 115 | mod.doEvictFromCache(); | |
| 116 | } | |
| 117 | } |