| 1 | /* |
| 2 | |
| 3 | Derby - Class org.apache.derby.impl.store.raw.xact.InternalXact |
| 4 | |
| 5 | Copyright 1997, 2004 The Apache Software Foundation or its licensors, as applicable. |
| 6 | |
| 7 | Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | you may not use this file except in compliance with the License. |
| 9 | You may obtain a copy of the License at |
| 10 | |
| 11 | http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | |
| 13 | Unless required by applicable law or agreed to in writing, software |
| 14 | distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | See the License for the specific language governing permissions and |
| 17 | limitations under the License. |
| 18 | |
| 19 | */ |
| 20 | |
| 21 | package org.apache.derby.impl.store.raw.xact; |
| 22 | |
| 23 | import org.apache.derby.iapi.reference.SQLState; |
| 24 | |
| 25 | import org.apache.derby.iapi.store.raw.Transaction; |
| 26 | |
| 27 | import org.apache.derby.iapi.store.raw.log.LogFactory; |
| 28 | |
| 29 | import org.apache.derby.iapi.store.raw.data.DataFactory; |
| 30 | |
| 31 | import org.apache.derby.iapi.error.StandardException; |
| 32 | |
| 33 | import org.apache.derby.iapi.services.sanity.SanityManager; |
| 34 | |
| 35 | import java.io.ObjectInput; |
| 36 | |
| 37 | /** |
| 38 | |
| 39 | @see Xact |
| 40 | |
| 41 | */ |
| 42 | public class InternalXact extends Xact |
| 43 | { |
| 44 | |
| 45 | /* |
| 46 | ** Constructor |
| 47 | */ |
| 48 | |
| 49 | protected InternalXact( |
| 50 | XactFactory xactFactory, |
| 51 | LogFactory logFactory, |
| 52 | DataFactory dataFactory) |
| 53 | { |
| 54 | super(xactFactory, logFactory, dataFactory, false, null); |
| 55 | |
| 56 | // always want to hold latches & containers open past the commit/abort |
| 57 | setPostComplete(); |
| 58 | } |
| 59 | |
| 60 | /* |
| 61 | ** Methods of Transaction |
| 62 | */ |
| 63 | |
| 64 | |
| 65 | /** |
| 66 | Savepoints are not supported in internal transactions. |
| 67 | |
| 68 | @exception StandardException A transaction exception is thrown to |
| 69 | disallow savepoints. |
| 70 | |
| 71 | @see Transaction#setSavePoint |
| 72 | */ |
| 73 | public int setSavePoint(String name, Object kindOfSavepoint) |
| 74 | throws StandardException |
| 75 | { |
| 76 | throw StandardException.newException( |
| 77 | SQLState.XACT_NOT_SUPPORTED_IN_INTERNAL_XACT); |
| 78 | } |
| 79 | |
| 80 | |
| 81 | /* |
| 82 | ** Methods of RawTransaction |
| 83 | */ |
| 84 | /** |
| 85 | Internal transactions don't allow logical operations. |
| 86 | |
| 87 | @exception StandardException A transaction exception is thrown to |
| 88 | disallow logical operations. |
| 89 | |
| 90 | @see org.apache.derby.iapi.store.raw.xact.RawTransaction#recoveryRollbackFirst |
| 91 | */ |
| 92 | |
| 93 | public void checkLogicalOperationOK() |
| 94 | throws StandardException |
| 95 | { |
| 96 | throw StandardException.newException( |
| 97 | SQLState.XACT_NOT_SUPPORTED_IN_INTERNAL_XACT); |
| 98 | } |
| 99 | |
| 100 | /** |
| 101 | Yes, we do want to be rolled back first in recovery. |
| 102 | |
| 103 | @see org.apache.derby.iapi.store.raw.xact.RawTransaction#recoveryRollbackFirst |
| 104 | */ |
| 105 | public boolean recoveryRollbackFirst() |
| 106 | { |
| 107 | return true; |
| 108 | } |
| 109 | |
| 110 | /* |
| 111 | ** Implementation specific methods |
| 112 | */ |
| 113 | |
| 114 | /** |
| 115 | * @param commitOrAbort to commit or abort |
| 116 | * |
| 117 | * @exception StandardException on error |
| 118 | */ |
| 119 | protected void doComplete(Integer commitOrAbort) |
| 120 | throws StandardException |
| 121 | { |
| 122 | |
| 123 | // release our latches on an abort |
| 124 | // keep everything on a commit |
| 125 | if (commitOrAbort.equals(ABORT)) |
| 126 | super.doComplete(commitOrAbort); |
| 127 | } |
| 128 | |
| 129 | protected void setIdleState() |
| 130 | { |
| 131 | |
| 132 | super.setIdleState(); |
| 133 | |
| 134 | // Quiesce mode never denies an internal transaction from going active, don't |
| 135 | // have to worry about that |
| 136 | if (countObservers() != 0) |
| 137 | { |
| 138 | try |
| 139 | { |
| 140 | super.setActiveState(); |
| 141 | } |
| 142 | catch (StandardException se) |
| 143 | { |
| 144 | if (SanityManager.DEBUG) |
| 145 | SanityManager.THROWASSERT("unexpected exception: " + se); |
| 146 | } |
| 147 | } |
| 148 | } |
| 149 | } |