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Code Issues Releases Wiki Activity

Merge pull request #733 from wenshao/master

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change oracle valid connection impl
This commit is contained in:
高铁
2014-12-03 03:33:24 +08:00
parent b282b8181d 0480471829
commit e3de9b300f
1 changed files with 21 additions and 37 deletions
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src/main/java/com/alibaba/druid/pool/vendor/OracleValidConnectionChecker.java
Vendored
+21 -37
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@@ -15,6 +15,13 @@
*/
package com.alibaba.druid.pool.vendor;
import java.io.Serializable;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;
import com.alibaba.druid.pool.DruidPooledConnection;
import com.alibaba.druid.pool.ValidConnectionChecker;
import com.alibaba.druid.pool.ValidConnectionCheckerAdapter;
@@ -22,41 +29,21 @@ import com.alibaba.druid.proxy.jdbc.ConnectionProxy;
import com.alibaba.druid.support.logging.Log;
import com.alibaba.druid.support.logging.LogFactory;
import com.alibaba.druid.util.JdbcUtils;
import com.alibaba.druid.util.Utils;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;
public class OracleValidConnectionChecker extends ValidConnectionCheckerAdapter implements ValidConnectionChecker, Serializable {
private static final long serialVersionUID = -2227528634302168877L;
private static final long serialVersionUID = -2227528634302168877L;
private static final Log LOG = LogFactory.getLog(OracleValidConnectionChecker.class);
private static final Log LOG = LogFactory.getLog(OracleValidConnectionChecker.class);
private final Class<?> clazz;
private final Method ping;
private final static Object[] params = new Object[] { new Integer(5000) };
private int timeout = 1;
private String defaultValidateQuery = "SELECT 'x' FROM DUAL";
public OracleValidConnectionChecker(){
try {
clazz = Utils.loadClass("oracle.jdbc.driver.OracleConnection");
if (clazz != null) {
ping = clazz.getMethod("pingDatabase", new Class[] { Integer.TYPE });
} else {
ping = null;
}
} catch (Exception e) {
throw new RuntimeException("Unable to resolve pingDatabase method:", e);
}
configFromProperties(System.getProperties());
}
@Override
public void configFromProperties(Properties properties) {
String property = properties.getProperty("druid.oracle.pingTimeout");
@@ -65,12 +52,16 @@ public class OracleValidConnectionChecker extends ValidConnectionCheckerAdapter
setTimeout(value);
}
}
public void setTimeout(int timeout) {
params[0] = timeout;
public void setTimeout(int seconds) {
this.timeout = seconds;
}
public boolean isValidConnection(Connection conn, String validateQuery, int validationQueryTimeout) {
if (validateQuery == null || validateQuery.isEmpty()) {
validateQuery = this.defaultValidateQuery;
}
try {
if (conn.isClosed()) {
return false;
@@ -89,18 +80,11 @@ public class OracleValidConnectionChecker extends ValidConnectionCheckerAdapter
conn = ((ConnectionProxy) conn).getRawObject();
}
// unwrap
if (clazz != null && clazz.isAssignableFrom(conn.getClass())) {
Integer status = (Integer) ping.invoke(conn, params);
// Error
return status >= 0;
}
Statement stmt = null;
ResultSet rs = null;
try {
stmt = conn.createStatement();
stmt.setQueryTimeout(timeout);
rs = stmt.executeQuery(validateQuery);
return true;
} catch (SQLException e) {