1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.tuscany.sca.data.engine;
import java.io.InputStream;
import java.util.List;
import org.apache.tuscany.das.rdb.ConfigHelper;
import org.apache.tuscany.das.rdb.DAS;
import org.apache.tuscany.das.rdb.config.wrapper.MappingWrapper;
import org.apache.tuscany.sca.data.engine.config.ConnectionInfo;
/**
* The DataAccessEngineManager acts like a registry and factory for DAS instances
* It holds DAS by it's config file name, reusing the same DAS for all components
* using the same config file.
*
* @version $Rev$ $Date$
*/
public class DataAccessEngineManager {
//private final Map<String, DAS> registry = new HashMap<String, DAS>();
public DataAccessEngineManager() {
super();
}
protected DAS initializeDAS(String config, ConnectionInfo connectionInfo, String table, String pkColumns) throws MissingConfigFileException {
//load the config file
//System.out.println("Initializing DAS");
ConfigHelper configHelper;
if(config == null) {
//no config information
configHelper = new ConfigHelper();
} else {
//initialize the config helper by loading config file
configHelper = new ConfigHelper(this.getConfigStream(config));
}
//add additional connectionInfo if provided in the SCA Composite file
if( connectionInfo != null) {
String dataSource = connectionInfo.getDataSource();
if(dataSource != null && dataSource.length() > 0) {
configHelper.addConnectionInfo(dataSource);
} else {
String driverClass = connectionInfo.getConnectionProperties().getDriverClass();
String connectionURL = connectionInfo.getConnectionProperties().getDatabaseURL();
String userName = connectionInfo.getConnectionProperties().getUsername();
String password = connectionInfo.getConnectionProperties().getPassword();
int loginTimeout = connectionInfo.getConnectionProperties().getLoginTimeout();
configHelper.addConnectionInfo(driverClass, connectionURL, userName, password, loginTimeout);
}
}
if(table != null && pkColumns != null) {
MappingWrapper configWrapper = new MappingWrapper(configHelper.getConfig());
List<String> pkColsList = DataAccessEngine.getKeys(pkColumns);
for(int i=0; i<pkColsList.size(); i++) {
configWrapper.addPrimaryKey(table+"."+pkColsList.get(i), pkColsList.get(i));
}
}
DAS das = DAS.FACTORY.createDAS(configHelper.getConfig());
return das;
}
/*
public DAS getDAS(String config) throws MissingConfigFileException {
//DAS das = registry.get(config);
//if ( das == null) {
// das = this.initializeDAS(config);
// this.registry.put(config, das);
//}
return initializeDAS(config, null);
}
public DAS getDAS(ConnectionInfo connectionInfo) {
assert connectionInfo != null;
//FIXME: cache the das, we need to define the keys to use (datasource and databaseurl + hashed(username + password))
DAS das = null;
try {
das = initializeDAS(null, connectionInfo);
}catch (MissingConfigFileException e) {
//this should never happen, as configFile == null
}
return das;
}
*/
public DAS getDAS(String config, ConnectionInfo connectionInfo) throws MissingConfigFileException {
assert connectionInfo != null;
//FIXME: cache the das, we need to define the keys to use (datasource and databaseurl + hashed(username + password))
return initializeDAS(config, connectionInfo, null, null);
}
public DAS getDAS(String config, ConnectionInfo connectionInfo, String table, String pkColumns) throws MissingConfigFileException {
assert connectionInfo != null;
//FIXME: cache the das, we need to define the keys to use (datasource and databaseurl + hashed(username + password))
return initializeDAS(config, connectionInfo, table, pkColumns);
}
protected InputStream getConfigStream(String config) throws MissingConfigFileException{
InputStream configStream = null;
try {
configStream = this.getClass().getClassLoader().getResourceAsStream(config);
} catch (Exception e) {
throw new MissingConfigFileException(config);
}
return configStream;
}
}
|
