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DefaultJdoDialect supports JDO 3.0 query timeout facility (as supported by DataNucleus 2.1)

This commit is contained in:
Juergen Hoeller 2010-07-08 11:47:30 +00:00
parent 3918518779
commit 96b9cf6ca9
1 changed files with 18 additions and 5 deletions
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23
org.springframework.orm/src/main/java/org/springframework/orm/jdo/DefaultJdoDialect.java
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@ -1,5 +1,5 @@
/*
* Copyright 2002-2009 the original author or authors.
* Copyright 2002-2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -16,6 +16,7 @@
package org.springframework.orm.jdo;
import java.lang.reflect.Method;
import java.sql.Connection;
import java.sql.SQLException;
import javax.jdo.JDOException;
@ -34,6 +35,8 @@ import org.springframework.jdbc.support.SQLExceptionTranslator;
import org.springframework.transaction.InvalidIsolationLevelException;
import org.springframework.transaction.TransactionDefinition;
import org.springframework.transaction.TransactionException;
import org.springframework.util.ClassUtils;
import org.springframework.util.ReflectionUtils;
/**
* Default implementation of the {@link JdoDialect} interface.
@ -66,6 +69,10 @@ import org.springframework.transaction.TransactionException;
*/
public class DefaultJdoDialect implements JdoDialect, PersistenceExceptionTranslator {
// JDO 3.0 setTimeoutMillis method available?
private static final Method setTimeoutMillisMethod =
ClassUtils.getMethodIfAvailable(Query.class, "setTimeoutMillis", Integer.class);
protected final Log logger = LogFactory.getLog(getClass());
private SQLExceptionTranslator jdbcExceptionTranslator;
@ -181,13 +188,19 @@ public class DefaultJdoDialect implements JdoDialect, PersistenceExceptionTransl
}
/**
* This implementation sets the JPA 2.0 query hints "javax.persistence.lock.timeout"
* and "javax.persistence.query.timeout", assuming that JDO 2.1 providers are often
* This implementation applies a JDO 3.0 query timeout, if available. Otherwise,
* it sets the JPA 2.0 query hints "javax.persistence.lock.timeout" and
* "javax.persistence.query.timeout", assuming that JDO providers are often
* JPA providers as well.
*/
public void applyQueryTimeout(Query query, int remainingTimeInSeconds) throws JDOException {
query.addExtension("javax.persistence.lock.timeout", remainingTimeInSeconds);
query.addExtension("javax.persistence.query.timeout", remainingTimeInSeconds);
if (setTimeoutMillisMethod != null) {
ReflectionUtils.invokeMethod(setTimeoutMillisMethod, query, remainingTimeInSeconds);
}
else {
query.addExtension("javax.persistence.lock.timeout", remainingTimeInSeconds);
query.addExtension("javax.persistence.query.timeout", remainingTimeInSeconds);
}
}