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HHH-15755: Let OracleDialect detect if running on Autonomous database

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LLEFEVRE 2022-11-25 08:52:21 +01:00 committed by Christian Beikov
parent 6777f4f7ac
commit 2509b74201
1 changed files with 26 additions and 0 deletions
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26
hibernate-core/src/main/java/org/hibernate/dialect/OracleDialect.java
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@ -130,6 +130,7 @@ import static org.hibernate.type.SqlTypes.VARCHAR;
*
* @author Steve Ebersole
* @author Gavin King
* @author Loïc Lefèvre
*/
public class OracleDialect extends Dialect {
@ -149,16 +150,41 @@ public class OracleDialect extends Dialect {
: new LegacyOracleLimitHandler( getVersion() );
private final UniqueDelegate uniqueDelegate = new CreateTableUniqueDelegate(this);
/** is it an Autonomous Database Cloud Service? */
protected final boolean autonomous;
public OracleDialect() {
this( MINIMUM_VERSION );
}
public OracleDialect(DatabaseVersion version) {
super(version);
autonomous = false;
}
public OracleDialect(DialectResolutionInfo info) {
super(info);
autonomous = isAutonomous( info.getDatabaseMetadata() );
}
protected static boolean isAutonomous(DatabaseMetaData databaseMetaData) {
if ( databaseMetaData != null ) {
try (java.sql.Statement s = databaseMetaData.getConnection().createStatement() ) {
// v$pdbs is available to any user on Autonomous database
try( ResultSet rs = s.executeQuery( "select p.name, t.region, t.base_size, t.service, t.infrastructure\n" +
"from v$pdbs p, JSON_TABLE(p.cloud_identity, '$' COLUMNS (region path '$.REGION', base_size number path '$.BASE_SIZE', service path '$.SERVICE', infrastructure path '$.INFRASTRUCTURE')) t" )) {
return rs.next();
}
}
catch (SQLException ex) {
// Ignore
}
}
return false;
}
public boolean isAutonomous() {
return autonomous;
}
@Override