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HHH-3525 : JDK 1.4 isolation reflection 

git-svn-id: https://svn.jboss.org/repos/hibernate/core/trunk@15338 1b8cb986-b30d-0410-93ca-fae66ebed9b2
This commit is contained in:
Steve Ebersole 2008-10-13 14:13:15 +00:00
parent 1d919d9d53
commit 02ab577b05
2 changed files with 68 additions and 32 deletions
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79
core/src/main/java/org/hibernate/cfg/Environment.java
View File

@ -237,7 +237,7 @@ public final class Environment {
public static final String SESSION_FACTORY_NAME = "hibernate.session_factory_name";
/**
* Hibernate SQL <tt>Dialect</tt> class
* Hibernate SQL {@link org.hibernate.dialect.Dialect} class
*/
public static final String DIALECT ="hibernate.dialect";
/**
@ -516,7 +516,9 @@ public final class Environment {
private static final Logger log = LoggerFactory.getLogger(Environment.class);
/**
* Issues warnings to the user when any obsolete property names are used.
* Issues warnings to the user when any obsolete or renamed property names are used.
*
* @param props The specified properties.
*/
public static void verifyProperties(Properties props) {
Iterator iter = props.keySet().iterator();
@ -605,7 +607,9 @@ public final class Environment {
getGeneratedKeysSupport = false;
}
JVM_SUPPORTS_GET_GENERATED_KEYS = getGeneratedKeysSupport;
if (!JVM_SUPPORTS_GET_GENERATED_KEYS) log.info("JVM does not support Statement.getGeneratedKeys()");
if (!JVM_SUPPORTS_GET_GENERATED_KEYS) {
log.info("JVM does not support Statement.getGeneratedKeys()");
}
boolean linkedHashSupport;
try {
@ -616,10 +620,16 @@ public final class Environment {
linkedHashSupport = false;
}
JVM_SUPPORTS_LINKED_HASH_COLLECTIONS = linkedHashSupport;
if (!JVM_SUPPORTS_LINKED_HASH_COLLECTIONS) log.info("JVM does not support LinkedHasMap, LinkedHashSet - ordered maps and sets disabled");
if (!JVM_SUPPORTS_LINKED_HASH_COLLECTIONS) {
log.info("JVM does not support LinkedHasMap, LinkedHashSet - ordered maps and sets disabled");
}
long x = 123456789;
JVM_HAS_TIMESTAMP_BUG = new Timestamp(x).getTime() != x;
if (JVM_HAS_TIMESTAMP_BUG) {
log.info("using workaround for JVM bug in java.sql.Timestamp");
}
JVM_HAS_TIMESTAMP_BUG = new Timestamp(123456789).getTime() != 123456789;
if (JVM_HAS_TIMESTAMP_BUG) log.info("using workaround for JVM bug in java.sql.Timestamp");
Timestamp t = new Timestamp(0);
t.setNanos(5 * 1000000);
JVM_HAS_JDK14_TIMESTAMP = t.getTime() == 5;
@ -636,21 +646,37 @@ public final class Environment {
}
/**
* Does this JVM have the IBM JDK 1.3.1. The bug is <tt>new Timestamp(x).getTime()!=x</tt>.
* Does this JVM's implementation of {@link java.sql.Timestamp} have a bug in which the following is true:<code>
* new java.sql.Timestamp( x ).getTime() != x
* </code>
* <p/>
* NOTE : IBM JDK 1.3.1 the only known JVM to exhibit this behavior.
*
* @return True if the JVM's {@link Timestamp} implementa
*/
public static boolean jvmHasTimestampBug() {
return JVM_HAS_TIMESTAMP_BUG;
}
/**
* Does this JVM handle <tt>Timestamp</tt> in the JDK 1.4 compliant way?
* Does this JVM handle {@link java.sql.Timestamp} in the JDK 1.4 compliant way wrt to nano rolling>
*
* @return True if the JDK 1.4 (JDBC3) specification for {@link java.sql.Timestamp} nano rolling is adhered to.
*
* @deprecated Starting with 3.3 Hibernate requires JDK 1.4 or higher
*/
public static boolean jvmHasJDK14Timestamp() {
return JVM_HAS_JDK14_TIMESTAMP;
}
/**
* Does this JVM support <tt>LinkedHashSet</tt>, <tt>LinkedHashMap</tt>.
* Does this JVM support {@link java.util.LinkedHashSet} and {@link java.util.LinkedHashMap}?
* <p/>
* Note, this is true for JDK 1.4 and above; hence the deprecation.
*
* @return True if {@link java.util.LinkedHashSet} and {@link java.util.LinkedHashMap} are available.
*
* @deprecated Starting with 3.3 Hibernate requires JDK 1.4 or higher
* @see java.util.LinkedHashSet
* @see java.util.LinkedHashMap
*/
@ -658,29 +684,50 @@ public final class Environment {
return JVM_SUPPORTS_LINKED_HASH_COLLECTIONS;
}
/**
* Does this JDK/JVM define the JDBC {@link Statement} interface with a 'getGeneratedKeys' method?
* <p/>
* Note, this is true for JDK 1.4 and above; hence the deprecation.
*
* @return True if generated keys can be retrieved via Statement; false otherwise.
*
* @see Statement
* @deprecated Starting with 3.3 Hibernate requires JDK 1.4 or higher
*/
public static boolean jvmSupportsGetGeneratedKeys() {
return JVM_SUPPORTS_GET_GENERATED_KEYS;
}
/**
* Should we use streams to bind binary types to JDBC IN parameters.
* Property <tt>hibernate.jdbc.use_streams_for_binary</tt>.
* @see Environment#USE_STREAMS_FOR_BINARY
* Should we use streams to bind binary types to JDBC IN parameters?
*
* @return True if streams should be used for binary data handling; false otherwise.
*
* @see #USE_STREAMS_FOR_BINARY
*/
public static boolean useStreamsForBinary() {
return ENABLE_BINARY_STREAMS;
}
/**
* Should we use CGLIB reflection optimizer.
* Property <tt>hibernate.jdbc.use_refection_optimizer</tt>.
* @see Environment#USE_REFLECTION_OPTIMIZER
* Should we use reflection optimization?
*
* @return True if reflection optimization should be used; false otherwise.
*
* @see #USE_REFLECTION_OPTIMIZER
* @see #getBytecodeProvider()
* @see BytecodeProvider#getReflectionOptimizer
*/
public static boolean useReflectionOptimizer() {
return ENABLE_REFLECTION_OPTIMIZER;
}
private Environment() { throw new UnsupportedOperationException(); }
/**
* Disallow instantiation
*/
private Environment() {
throw new UnsupportedOperationException();
}
/**
* Return <tt>System</tt> properties, extended by any properties specified

21
core/src/main/java/org/hibernate/cfg/SettingsFactory.java
View File

@ -120,28 +120,17 @@ public class SettingsFactory implements Serializable {
metaSupportsBatchUpdates = meta.supportsBatchUpdates();
metaReportsDDLCausesTxnCommit = meta.dataDefinitionCausesTransactionCommit();
metaReportsDDLInTxnSupported = !meta.dataDefinitionIgnoredInTransactions();
if ( Environment.jvmSupportsGetGeneratedKeys() ) {
try {
Boolean result = (Boolean) DatabaseMetaData.class.getMethod("supportsGetGeneratedKeys", null)
.invoke(meta, null);
metaSupportsGetGeneratedKeys = result.booleanValue();
}
catch (AbstractMethodError ame) {
metaSupportsGetGeneratedKeys = false;
}
catch (Exception e) {
metaSupportsGetGeneratedKeys = false;
}
}
metaSupportsGetGeneratedKeys = meta.supportsGetGeneratedKeys();
}
catch (SQLException sqle) {
log.warn("Could not obtain connection metadata", sqle);
}
finally {
connections.closeConnection(conn);
}
}
catch (SQLException sqle) {
log.warn("Could not obtain connection metadata", sqle);
log.warn("Could not obtain connection to query metadata", sqle);
}
catch (UnsupportedOperationException uoe) {
// user supplied JDBC connections