/
MySqlSymmetricDialect.java
179 lines (156 loc) · 6.88 KB
/
MySqlSymmetricDialect.java
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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
/*
* Licensed to JumpMind Inc under one or more contributor
* license agreements. See the NOTICE file distributed
* with this work for additional information regarding
* copyright ownership. JumpMind Inc licenses this file
* to you under the GNU Lesser General Public License (the
* "License"); you may not use this file except in compliance
* with the License.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see
* <http://www.gnu.org/licenses/>.
*
* 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.jumpmind.symmetric.db.mysql;
import java.sql.Connection;
import java.sql.SQLException;
import org.jumpmind.db.platform.IDatabasePlatform;
import org.jumpmind.db.sql.ISqlTransaction;
import org.jumpmind.db.sql.SqlException;
import org.jumpmind.db.sql.jdbc.JdbcSqlTransaction;
import org.jumpmind.db.util.BinaryEncoding;
import org.jumpmind.symmetric.Version;
import org.jumpmind.symmetric.common.ParameterConstants;
import org.jumpmind.symmetric.db.AbstractSymmetricDialect;
import org.jumpmind.symmetric.db.ISymmetricDialect;
import org.jumpmind.symmetric.model.Trigger;
import org.jumpmind.symmetric.model.TriggerHistory;
import org.jumpmind.symmetric.service.IParameterService;
public class MySqlSymmetricDialect extends AbstractSymmetricDialect implements ISymmetricDialect {
private static final String TRANSACTION_ID = "transaction_id";
static final String SYNC_TRIGGERS_DISABLED_USER_VARIABLE = "@sync_triggers_disabled";
static final String SYNC_TRIGGERS_DISABLED_NODE_VARIABLE = "@sync_node_disabled";
private String functionTemplateKeySuffix = null;
public MySqlSymmetricDialect(IParameterService parameterService, IDatabasePlatform platform) {
super(parameterService, platform);
this.triggerText = new MySqlTriggerText();
this.parameterService = parameterService;
}
@Override
protected void initTablesAndFunctionsForSpecificDialect() {
int[] versions = Version.parseVersion(getProductVersion());
if (getMajorVersion() == 5
&& (getMinorVersion() == 0 || (getMinorVersion() == 1 && versions[2] < 23))) {
this.functionTemplateKeySuffix = "_pre_5_1_23";
} else {
this.functionTemplateKeySuffix = "_post_5_1_23";
}
}
@Override
public boolean supportsTransactionId() {
return true;
}
@Override
protected void createRequiredFunctions() {
String[] functions = triggerText.getFunctionsToInstall();
for (int i = 0; i < functions.length; i++) {
if (functions[i].endsWith(this.functionTemplateKeySuffix)) {
String funcName = parameterService.getTablePrefix()
+ "_"
+ functions[i].substring(0, functions[i].length()
- this.functionTemplateKeySuffix.length());
if (platform.getSqlTemplate().queryForInt(
triggerText.getFunctionInstalledSql(funcName, platform.getDefaultSchema())) == 0) {
platform.getSqlTemplate().update(
triggerText.getFunctionSql(functions[i], funcName,
platform.getDefaultSchema()));
log.info("Just installed {}", funcName);
}
}
}
}
@Override
protected boolean doesTriggerExistOnPlatform(String catalog, String schema, String tableName,
String triggerName) {
catalog = catalog == null ? (platform.getDefaultCatalog() == null ? null : platform
.getDefaultCatalog()) : catalog;
String checkCatalogSql = (catalog != null && catalog.length() > 0) ? " and trigger_schema='"
+ catalog + "'"
: "";
return platform
.getSqlTemplate()
.queryForInt(
"select count(*) from information_schema.triggers where trigger_name like ? and event_object_table like ?"
+ checkCatalogSql, new Object[] { triggerName, tableName }) > 0;
}
@Override
public void removeTrigger(StringBuilder sqlBuffer, String catalogName, String schemaName,
String triggerName, String tableName, TriggerHistory oldHistory) {
catalogName = catalogName == null ? "" : (catalogName + ".");
final String sql = "drop trigger " + catalogName + triggerName;
logSql(sql, sqlBuffer);
if (parameterService.is(ParameterConstants.AUTO_SYNC_TRIGGERS)) {
try {
platform.getSqlTemplate().update(sql);
} catch (Exception e) {
log.warn("Trigger does not exist");
}
}
}
public void disableSyncTriggers(ISqlTransaction transaction, String nodeId) {
transaction.execute("set " + SYNC_TRIGGERS_DISABLED_USER_VARIABLE + "=1");
if (nodeId != null) {
transaction
.execute("set " + SYNC_TRIGGERS_DISABLED_NODE_VARIABLE + "='" + nodeId + "'");
}
}
public void enableSyncTriggers(ISqlTransaction transaction) {
transaction.execute("set " + SYNC_TRIGGERS_DISABLED_USER_VARIABLE + "=null");
transaction.execute("set " + SYNC_TRIGGERS_DISABLED_NODE_VARIABLE + "=null");
}
public String getSyncTriggersExpression() {
return SYNC_TRIGGERS_DISABLED_USER_VARIABLE + " is null";
}
private final String getTransactionFunctionName() {
return platform.getDefaultCatalog() + "." + parameterService.getTablePrefix() + "_"
+ TRANSACTION_ID;
}
@Override
public String getTransactionTriggerExpression(String defaultCatalog, String defaultSchema,
Trigger trigger) {
return getTransactionFunctionName() + "()";
}
public void purge() {
}
@Override
protected String switchCatalogForTriggerInstall(String catalog, ISqlTransaction transaction) {
if (catalog != null) {
Connection c = ((JdbcSqlTransaction) transaction).getConnection();
String previousCatalog;
try {
previousCatalog = c.getCatalog();
c.setCatalog(catalog);
return previousCatalog;
} catch (SQLException e) {
throw new SqlException(e);
}
} else {
return null;
}
}
@Override
public BinaryEncoding getBinaryEncoding() {
return BinaryEncoding.HEX;
}
@Override
protected String getDbSpecificDataHasChangedCondition(Trigger trigger) {
return "var_row_data != var_old_data";
}
}