| 1 | /* |
| 2 | |
| 3 | Derby - Class org.apache.derby.jdbc.ResourceAdapterImpl |
| 4 | |
| 5 | Copyright 1999, 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.jdbc; |
| 22 | |
| 23 | import org.apache.derby.iapi.services.info.JVMInfo; |
| 24 | |
| 25 | import org.apache.derby.iapi.services.context.ContextService; |
| 26 | import org.apache.derby.iapi.services.monitor.ModuleControl; |
| 27 | import org.apache.derby.iapi.services.monitor.Monitor; |
| 28 | import org.apache.derby.iapi.services.sanity.SanityManager; |
| 29 | |
| 30 | import org.apache.derby.iapi.jdbc.ResourceAdapter; |
| 31 | //import org.apache.derby.iapi.jdbc.XATransactionResource; |
| 32 | |
| 33 | import org.apache.derby.iapi.error.StandardException; |
| 34 | import org.apache.derby.iapi.store.access.AccessFactory; |
| 35 | import org.apache.derby.iapi.store.access.xa.XAResourceManager; |
| 36 | import org.apache.derby.iapi.store.access.xa.XAXactId; |
| 37 | |
| 38 | |
| 39 | import java.util.Properties; |
| 40 | import java.util.Hashtable; |
| 41 | import java.util.Enumeration; |
| 42 | |
| 43 | |
| 44 | public class ResourceAdapterImpl |
| 45 | implements ResourceAdapter, ModuleControl |
| 46 | { |
| 47 | private boolean active; |
| 48 | |
| 49 | // the real resource manager |
| 50 | private XAResourceManager rm; |
| 51 | |
| 52 | // maps Xid to XATransationResource for run time transactions |
| 53 | private Hashtable connectionTable; |
| 54 | |
| 55 | /* |
| 56 | * Module control |
| 57 | */ |
| 58 | |
| 59 | public void boot(boolean create, Properties properties) |
| 60 | throws StandardException |
| 61 | { |
| 62 | // we can only run on jdk1.2 or beyond with JTA and JAVA 20 extension |
| 63 | // loaded. |
| 64 | |
| 65 | connectionTable = new Hashtable(); |
| 66 | |
| 67 | AccessFactory af = |
| 68 | (AccessFactory)Monitor.findServiceModule(this, AccessFactory.MODULE); |
| 69 | |
| 70 | rm = (XAResourceManager) af.getXAResourceManager(); |
| 71 | |
| 72 | active = true; |
| 73 | } |
| 74 | |
| 75 | public void stop() |
| 76 | { |
| 77 | active = false; |
| 78 | |
| 79 | for (Enumeration e = connectionTable.elements(); e.hasMoreElements(); ) { |
| 80 | |
| 81 | XATransactionState tranState = (XATransactionState) e.nextElement(); |
| 82 | |
| 83 | try { |
| 84 | tranState.conn.close(); |
| 85 | } catch (java.sql.SQLException sqle) { |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | active = false; |
| 90 | } |
| 91 | |
| 92 | public boolean isActive() |
| 93 | { |
| 94 | return active; |
| 95 | } |
| 96 | |
| 97 | /* |
| 98 | * Resource Adapter methods |
| 99 | */ |
| 100 | |
| 101 | public synchronized Object findConnection(XAXactId xid) { |
| 102 | |
| 103 | return connectionTable.get(xid); |
| 104 | } |
| 105 | |
| 106 | public synchronized boolean addConnection(XAXactId xid, Object conn) { |
| 107 | if (connectionTable.get(xid) != null) |
| 108 | return false; |
| 109 | |
| 110 | // put this into the transaction table, if the xid is already |
| 111 | // present as an in-doubt transaction, we need to remove it from |
| 112 | // the run time list |
| 113 | connectionTable.put(xid, conn); |
| 114 | return true; |
| 115 | } |
| 116 | |
| 117 | public synchronized Object removeConnection(XAXactId xid) { |
| 118 | |
| 119 | return connectionTable.remove(xid); |
| 120 | |
| 121 | } |
| 122 | |
| 123 | |
| 124 | /** |
| 125 | Return the XA Resource manager to the XA Connection |
| 126 | */ |
| 127 | public XAResourceManager getXAResourceManager() |
| 128 | { |
| 129 | return rm; |
| 130 | } |
| 131 | } |