//$Id: Environment.java 11506 2007-05-09 17:49:31Z [email protected] $
package org.hibernate.cfg;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.Statement;
import java.sql.Timestamp;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.HibernateException;
import org.hibernate.bytecode.BytecodeProvider;
import org.hibernate.util.ConfigHelper;
import org.hibernate.util.PropertiesHelper;
/**
* Provides access to configuration info passed in <tt>Properties</tt> objects.
* <br><br>
* Hibernate has two property scopes:
* <ul>
* <li><b>Factory-level</b> properties may be passed to the <tt>SessionFactory</tt> when it
* instantiated. Each instance might have different property values. If no
* properties are specified, the factory calls <tt>Environment.getProperties()</tt>.
* <li><b>System-level</b> properties are shared by all factory instances and are always
* determined by the <tt>Environment</tt> properties.
* </ul>
* The only system-level properties are
* <ul>
* <li><tt>hibernate.jdbc.use_streams_for_binary</tt>
* <li><tt>hibernate.cglib.use_reflection_optimizer</tt>
* </ul>
* <tt>Environment</tt> properties are populated by calling <tt>System.getProperties()</tt>
* and then from a resource named <tt>/hibernate.properties</tt> if it exists. System
* properties override properties specified in <tt>hibernate.properties</tt>.<br>
* <br>
* The <tt>SessionFactory</tt> is controlled by the following properties.
* Properties may be either be <tt>System</tt> properties, properties
* defined in a resource named <tt>/hibernate.properties</tt> or an instance of
* <tt>java.util.Properties</tt> passed to
* <tt>Configuration.buildSessionFactory()</tt><br>
* <br>
* <table>
* <tr><td><b>property</b></td><td><b>meaning</b></td></tr>
* <tr>
* <td><tt>hibernate.dialect</tt></td>
* <td>classname of <tt>org.hibernate.dialect.Dialect</tt> subclass</td>
* </tr>
* <tr>
* <td><tt>hibernate.cache.provider_class</tt></td>
* <td>classname of <tt>org.hibernate.cache.CacheProvider</tt>
* subclass (if not specified EHCache is used)</td>
* </tr>
* <tr>
* <td><tt>hibernate.connection.provider_class</tt></td>
* <td>classname of <tt>org.hibernate.connection.ConnectionProvider</tt>
* subclass (if not specified hueristics are used)</td>
* </tr>
* <tr><td><tt>hibernate.connection.username</tt></td><td>database username</td></tr>
* <tr><td><tt>hibernate.connection.password</tt></td><td>database password</td></tr>
* <tr>
* <td><tt>hibernate.connection.url</tt></td>
* <td>JDBC URL (when using <tt>java.sql.DriverManager</tt>)</td>
* </tr>
* <tr>
* <td><tt>hibernate.connection.driver_class</tt></td>
* <td>classname of JDBC driver</td>
* </tr>
* <tr>
* <td><tt>hibernate.connection.isolation</tt></td>
* <td>JDBC transaction isolation level (only when using
* <tt>java.sql.DriverManager</tt>)
* </td>
* </tr>
* <td><tt>hibernate.connection.pool_size</tt></td>
* <td>the maximum size of the connection pool (only when using
* <tt>java.sql.DriverManager</tt>)
* </td>
* </tr>
* <tr>
* <td><tt>hibernate.connection.datasource</tt></td>
* <td>databasource JNDI name (when using <tt>javax.sql.Datasource</tt>)</td>
* </tr>
* <tr>
* <td><tt>hibernate.jndi.url</tt></td><td>JNDI <tt>InitialContext</tt> URL</td>
* </tr>
* <tr>
* <td><tt>hibernate.jndi.class</tt></td><td>JNDI <tt>InitialContext</tt> classname</td>
* </tr>
* <tr>
* <td><tt>hibernate.max_fetch_depth</tt></td>
* <td>maximum depth of outer join fetching</td>
* </tr>
* <tr>
* <td><tt>hibernate.jdbc.batch_size</tt></td>
* <td>enable use of JDBC2 batch API for drivers which support it</td>
* </tr>
* <tr>
* <td><tt>hibernate.jdbc.fetch_size</tt></td>
* <td>set the JDBC fetch size</td>
* </tr>
* <tr>
* <td><tt>hibernate.jdbc.use_scrollable_resultset</tt></td>
* <td>enable use of JDBC2 scrollable resultsets (you only need this specify
* this property when using user supplied connections)</td>
* </tr>
* <tr>
* <td><tt>hibernate.jdbc.use_getGeneratedKeys</tt></td>
* <td>enable use of JDBC3 PreparedStatement.getGeneratedKeys() to retrieve
* natively generated keys after insert. Requires JDBC3+ driver and JRE1.4+</td>
* </tr>
* <tr>
* <td><tt>hibernate.hbm2ddl.auto</tt></td>
* <td>enable auto DDL export</td>
* </tr>
* <tr>
* <td><tt>hibernate.default_schema</tt></td>
* <td>use given schema name for unqualified tables (always optional)</td>
* </tr>
* <tr>
* <td><tt>hibernate.default_catalog</tt></td>
* <td>use given catalog name for unqualified tables (always optional)</td>
* </tr>
* <tr>
* <td><tt>hibernate.session_factory_name</tt></td>
* <td>If set, the factory attempts to bind this name to itself in the
* JNDI context. This name is also used to support cross JVM <tt>
* Session</tt> (de)serialization.</td>
* </tr>
* <tr>
* <td><tt>hibernate.transaction.manager_lookup_class</tt></td>
* <td>classname of <tt>org.hibernate.transaction.TransactionManagerLookup</tt>
* implementor</td>
* </tr>
* <tr>
* <td><tt>hibernate.transaction.factory_class</tt></td>
* <td>the factory to use for instantiating <tt>Transaction</tt>s.
* (Defaults to <tt>JDBCTransactionFactory</tt>.)</td>
* </tr>
* <tr>
* <td><tt>hibernate.query.substitutions</tt></td><td>query language token substitutions</td>
* </tr>
* </table>
*
* @see org.hibernate.SessionFactory
* @author Gavin King
*/
public final class Environment {
public static final String VERSION = "3.2.4";
/**
* <tt>ConnectionProvider</tt> implementor to use when obtaining connections
*/
public static final String CONNECTION_PROVIDER ="hibernate.connection.provider_class";
/**
* JDBC driver class
*/
public static final String DRIVER ="hibernate.connection.driver_class";
/**
* JDBC transaction isolation level
*/
public static final String ISOLATION ="hibernate.connection.isolation";
/**
* JDBC URL
*/
public static final String URL ="hibernate.connection.url";
/**
* JDBC user
*/
public static final String USER ="hibernate.connection.username";
/**
* JDBC password
*/
public static final String PASS ="hibernate.connection.password";
/**
* JDBC autocommit mode
*/
public static final String AUTOCOMMIT ="hibernate.connection.autocommit";
/**
* Maximum number of inactive connections for Hibernate's connection pool
*/
public static final String POOL_SIZE ="hibernate.connection.pool_size";
/**
* <tt>java.sql.Datasource</tt> JNDI name
*/
public static final String DATASOURCE ="hibernate.connection.datasource";
/**
* prefix for arbitrary JDBC connection properties
*/
public static final String CONNECTION_PREFIX = "hibernate.connection";
/**
* JNDI initial context class, <tt>Context.INITIAL_CONTEXT_FACTORY</tt>
*/
public static final String JNDI_CLASS ="hibernate.jndi.class";
/**
* JNDI provider URL, <tt>Context.PROVIDER_URL</tt>
*/
public static final String JNDI_URL ="hibernate.jndi.url";
/**
* prefix for arbitrary JNDI <tt>InitialContext</tt> properties
*/
public static final String JNDI_PREFIX = "hibernate.jndi";
/**
* JNDI name to bind to <tt>SessionFactory</tt>
*/
public static final String SESSION_FACTORY_NAME = "hibernate.session_factory_name";
/**
* Hibernate SQL <tt>Dialect</tt> class
*/
public static final String DIALECT ="hibernate.dialect";
/**
* A default database schema (owner) name to use for unqualified tablenames
*/
public static final String DEFAULT_SCHEMA = "hibernate.default_schema";
/**
* A default database catalog name to use for unqualified tablenames
*/
public static final String DEFAULT_CATALOG = "hibernate.default_catalog";
/**
* Enable logging of generated SQL to the console
*/
public static final String SHOW_SQL ="hibernate.show_sql";
/**
* Enable formatting of SQL logged to the console
*/
public static final String FORMAT_SQL ="hibernate.format_sql";
/**
* Add comments to the generated SQL
*/
public static final String USE_SQL_COMMENTS ="hibernate.use_sql_comments";
/**
* Maximum depth of outer join fetching
*/
public static final String MAX_FETCH_DEPTH = "hibernate.max_fetch_depth";
/**
* The default batch size for batch fetching
*/
public static final String DEFAULT_BATCH_FETCH_SIZE = "hibernate.default_batch_fetch_size";
/**
* Use <tt>java.io</tt> streams to read / write binary data from / to JDBC
*/
public static final String USE_STREAMS_FOR_BINARY = "hibernate.jdbc.use_streams_for_binary";
/**
* Use JDBC scrollable <tt>ResultSet</tt>s. This property is only necessary when there is
* no <tt>ConnectionProvider</tt>, ie. the user is supplying JDBC connections.
*/
public static final String USE_SCROLLABLE_RESULTSET = "hibernate.jdbc.use_scrollable_resultset";
/**
* Tells the JDBC driver to attempt to retrieve row Id with the JDBC 3.0 PreparedStatement.getGeneratedKeys()
* method. In general, performance will be better if this property is set to true and the underlying
* JDBC driver supports getGeneratedKeys().
*/
public static final String USE_GET_GENERATED_KEYS = "hibernate.jdbc.use_get_generated_keys";
/**
* Gives the JDBC driver a hint as to the number of rows that should be fetched from the database
* when more rows are needed. If <tt>0</tt>, JDBC driver default settings will be used.
*/
public static final String STATEMENT_FETCH_SIZE = "hibernate.jdbc.fetch_size";
/**
* Maximum JDBC batch size. A nonzero value enables batch updates.
*/
public static final String STATEMENT_BATCH_SIZE = "hibernate.jdbc.batch_size";
/**
* Select a custom batcher.
*/
public static final String BATCH_STRATEGY = "hibernate.jdbc.factory_class";
/**
* Should versioned data be included in batching?
*/
public static final String BATCH_VERSIONED_DATA = "hibernate.jdbc.batch_versioned_data";
/**
* An XSLT resource used to generate "custom" XML
*/
public static final String OUTPUT_STYLESHEET ="hibernate.xml.output_stylesheet";
/**
* Maximum size of C3P0 connection pool
*/
public static final String C3P0_MAX_SIZE = "hibernate.c3p0.max_size";
/**
* Minimum size of C3P0 connection pool
*/
public static final String C3P0_MIN_SIZE = "hibernate.c3p0.min_size";
/**
* Maximum idle time for C3P0 connection pool
*/
public static final String C3P0_TIMEOUT = "hibernate.c3p0.timeout";
/**
* Maximum size of C3P0 statement cache
*/
public static final String C3P0_MAX_STATEMENTS = "hibernate.c3p0.max_statements";
/**
* Number of connections acquired when pool is exhausted
*/
public static final String C3P0_ACQUIRE_INCREMENT = "hibernate.c3p0.acquire_increment";
/**
* Idle time before a C3P0 pooled connection is validated
*/
public static final String C3P0_IDLE_TEST_PERIOD = "hibernate.c3p0.idle_test_period";
/**
* Proxool/Hibernate property prefix
*/
public static final String PROXOOL_PREFIX = "hibernate.proxool";
/**
* Proxool property to configure the Proxool Provider using an XML (<tt>/path/to/file.xml</tt>)
*/
public static final String PROXOOL_XML = "hibernate.proxool.xml";
/**
* Proxool property to configure the Proxool Provider using a properties file (<tt>/path/to/proxool.properties</tt>)
*/
public static final String PROXOOL_PROPERTIES = "hibernate.proxool.properties";
/**
* Proxool property to configure the Proxool Provider from an already existing pool (<tt>true</tt> / <tt>false</tt>)
*/
public static final String PROXOOL_EXISTING_POOL = "hibernate.proxool.existing_pool";
/**
* Proxool property with the Proxool pool alias to use
* (Required for <tt>PROXOOL_EXISTING_POOL</tt>, <tt>PROXOOL_PROPERTIES</tt>, or
* <tt>PROXOOL_XML</tt>)
*/
public static final String PROXOOL_POOL_ALIAS = "hibernate.proxool.pool_alias";
/**
* Enable automatic session close at end of transaction
*/
public static final String AUTO_CLOSE_SESSION = "hibernate.transaction.auto_close_session";
/**
* Enable automatic flush during the JTA <tt>beforeCompletion()</tt> callback
*/
public static final String FLUSH_BEFORE_COMPLETION = "hibernate.transaction.flush_before_completion";
/**
* Specifies how Hibernate should release JDBC connections.
*/
public static final String RELEASE_CONNECTIONS = "hibernate.connection.release_mode";
/**
* Context scoping impl for {@link org.hibernate.SessionFactory#getCurrentSession()} processing.
*/
public static final String CURRENT_SESSION_CONTEXT_CLASS = "hibernate.current_session_context_class";
/**
* <tt>TransactionFactory</tt> implementor to use for creating <tt>Transaction</tt>s
*/
public static final String TRANSACTION_STRATEGY = "hibernate.transaction.factory_class";
/**
* <tt>TransactionManagerLookup</tt> implementor to use for obtaining the <tt>TransactionManager</tt>
*/
public static final String TRANSACTION_MANAGER_STRATEGY = "hibernate.transaction.manager_lookup_class";
/**
* JNDI name of JTA <tt>UserTransaction</tt> object
*/
public static final String USER_TRANSACTION = "jta.UserTransaction";
/**
* The <tt>CacheProvider</tt> implementation class
*/
public static final String CACHE_PROVIDER = "hibernate.cache.provider_class";
/**
* The <tt>CacheProvider</tt> implementation class
*/
public static final String CACHE_PROVIDER_CONFIG = "hibernate.cache.provider_configuration_file_resource_path";
/**
* The <tt>CacheProvider</tt> JNDI namespace, if pre-bound to JNDI.
*/
public static final String CACHE_NAMESPACE = "hibernate.cache.jndi";
/**
* Enable the query cache (disabled by default)
*/
public static final String USE_QUERY_CACHE = "hibernate.cache.use_query_cache";
/**
* The <tt>QueryCacheFactory</tt> implementation class.
*/
public static final String QUERY_CACHE_FACTORY = "hibernate.cache.query_cache_factory";
/**
* Enable the second-level cache (enabled by default)
*/
public static final String USE_SECOND_LEVEL_CACHE = "hibernate.cache.use_second_level_cache";
/**
* Optimize the cache for mimimal puts instead of minimal gets
*/
public static final String USE_MINIMAL_PUTS = "hibernate.cache.use_minimal_puts";
/**
* The <tt>CacheProvider</tt> region name prefix
*/
public static final String CACHE_REGION_PREFIX = "hibernate.cache.region_prefix";
/**
* Enable use of structured second-level cache entries
*/
public static final String USE_STRUCTURED_CACHE = "hibernate.cache.use_structured_entries";
/**
* Enable statistics collection
*/
public static final String GENERATE_STATISTICS = "hibernate.generate_statistics";
public static final String USE_IDENTIFIER_ROLLBACK = "hibernate.use_identifier_rollback";
/**
* Use bytecode libraries optimized property access
*/
public static final String USE_REFLECTION_OPTIMIZER = "hibernate.bytecode.use_reflection_optimizer";
/**
* The classname of the HQL query parser factory
*/
public static final String QUERY_TRANSLATOR = "hibernate.query.factory_class";
/**
* A comma-seperated list of token substitutions to use when translating a Hibernate
* query to SQL
*/
public static final String QUERY_SUBSTITUTIONS = "hibernate.query.substitutions";
/**
* Should named queries be checked during startup (the default is enabled).
* <p/>
* Mainly intended for test environments.
*/
public static final String QUERY_STARTUP_CHECKING = "hibernate.query.startup_check";
/**
* Auto export/update schema using hbm2ddl tool. Valid values are <tt>update</tt>,
* <tt>create</tt>, <tt>create-drop</tt> and <tt>validate</tt>.
*/
public static final String HBM2DDL_AUTO = "hibernate.hbm2ddl.auto";
/**
* The {@link org.hibernate.exception.SQLExceptionConverter} to use for converting SQLExceptions
* to Hibernate's JDBCException hierarchy. The default is to use the configured
* {@link org.hibernate.dialect.Dialect}'s preferred SQLExceptionConverter.
*/
public static final String SQL_EXCEPTION_CONVERTER = "hibernate.jdbc.sql_exception_converter";
/**
* Enable wrapping of JDBC result sets in order to speed up column name lookups for
* broken JDBC drivers
*/
public static final String WRAP_RESULT_SETS = "hibernate.jdbc.wrap_result_sets";
/**
* Enable ordering of update statements by primary key value
*/
public static final String ORDER_UPDATES = "hibernate.order_updates";
/**
* Enable ordering of insert statements for the purpose of more effecient JDBC batching.
*/
public static final String ORDER_INSERTS = "hibernate.order_inserts";
/**
* The EntityMode in which set the Session opened from the SessionFactory.
*/
public static final String DEFAULT_ENTITY_MODE = "hibernate.default_entity_mode";
/**
* The jacc context id of the deployment
*/
public static final String JACC_CONTEXTID = "hibernate.jacc_context_id";
public static final String BYTECODE_PROVIDER = "hibernate.bytecode.provider";
public static final String JPAQL_STRICT_COMPLIANCE= "hibernate.query.jpaql_strict_compliance";
private static final BytecodeProvider BYTECODE_PROVIDER_INSTANCE;
private static final boolean ENABLE_BINARY_STREAMS;
private static final boolean ENABLE_REFLECTION_OPTIMIZER;
private static final boolean JVM_SUPPORTS_LINKED_HASH_COLLECTIONS;
private static final boolean JVM_HAS_TIMESTAMP_BUG;
private static final boolean JVM_HAS_JDK14_TIMESTAMP;
private static final boolean JVM_SUPPORTS_GET_GENERATED_KEYS;
private static final Properties GLOBAL_PROPERTIES;
private static final HashMap ISOLATION_LEVELS = new HashMap();
private static final Map OBSOLETE_PROPERTIES = new HashMap();
private static final Map RENAMED_PROPERTIES = new HashMap();
private static final Log log = LogFactory.getLog(Environment.class);
/**
* Issues warnings to the user when any obsolete property names are used.
*/
public static void verifyProperties(Properties props) {
Iterator iter = props.keySet().iterator();
Map propertiesToAdd = new HashMap();
while ( iter.hasNext() ) {
final Object propertyName = iter.next();
Object newPropertyName = OBSOLETE_PROPERTIES.get( propertyName );
if ( newPropertyName != null ) {
log.warn( "Usage of obsolete property: " + propertyName + " no longer supported, use: " + newPropertyName );
}
newPropertyName = RENAMED_PROPERTIES.get( propertyName );
if ( newPropertyName != null ) {
log.warn( "Property [" + propertyName + "] has been renamed to [" + newPropertyName + "]; update your properties appropriately" );
if ( ! props.containsKey( newPropertyName ) ) {
propertiesToAdd.put( newPropertyName, props.get( propertyName ) );
}
}
}
props.putAll(propertiesToAdd);
}
static {
log.info("Hibernate " + VERSION);
RENAMED_PROPERTIES.put( "hibernate.cglib.use_reflection_optimizer", USE_REFLECTION_OPTIMIZER );
ISOLATION_LEVELS.put( new Integer(Connection.TRANSACTION_NONE), "NONE" );
ISOLATION_LEVELS.put( new Integer(Connection.TRANSACTION_READ_UNCOMMITTED), "READ_UNCOMMITTED" );
ISOLATION_LEVELS.put( new Integer(Connection.TRANSACTION_READ_COMMITTED), "READ_COMMITTED" );
ISOLATION_LEVELS.put( new Integer(Connection.TRANSACTION_REPEATABLE_READ), "REPEATABLE_READ" );
ISOLATION_LEVELS.put( new Integer(Connection.TRANSACTION_SERIALIZABLE), "SERIALIZABLE" );
GLOBAL_PROPERTIES = new Properties();
//Set USE_REFLECTION_OPTIMIZER to false to fix HHH-227
GLOBAL_PROPERTIES.setProperty( USE_REFLECTION_OPTIMIZER, Boolean.FALSE.toString() );
try {
InputStream stream = ConfigHelper.getResourceAsStream("/hibernate.properties");
try {
GLOBAL_PROPERTIES.load(stream);
log.info( "loaded properties from resource hibernate.properties: " + PropertiesHelper.maskOut(GLOBAL_PROPERTIES, PASS) );
}
catch (Exception e) {
log.error("problem loading properties from hibernate.properties");
}
finally {
try{
stream.close();
}
catch (IOException ioe){
log.error("could not close stream on hibernate.properties", ioe);
}
}
}
catch (HibernateException he) {
log.info("hibernate.properties not found");
}
try {
GLOBAL_PROPERTIES.putAll( System.getProperties() );
}
catch (SecurityException se) {
log.warn("could not copy system properties, system properties will be ignored");
}
verifyProperties(GLOBAL_PROPERTIES);
ENABLE_BINARY_STREAMS = PropertiesHelper.getBoolean(USE_STREAMS_FOR_BINARY, GLOBAL_PROPERTIES);
ENABLE_REFLECTION_OPTIMIZER = PropertiesHelper.getBoolean(USE_REFLECTION_OPTIMIZER, GLOBAL_PROPERTIES);
if (ENABLE_BINARY_STREAMS) {
log.info("using java.io streams to persist binary types");
}
if (ENABLE_REFLECTION_OPTIMIZER) {
log.info("using bytecode reflection optimizer");
}
BYTECODE_PROVIDER_INSTANCE = buildBytecodeProvider( GLOBAL_PROPERTIES );
boolean getGeneratedKeysSupport;
try {
Statement.class.getMethod("getGeneratedKeys", null);
getGeneratedKeysSupport = true;
}
catch (NoSuchMethodException nsme) {
getGeneratedKeysSupport = false;
}
JVM_SUPPORTS_GET_GENERATED_KEYS = getGeneratedKeysSupport;
if (!JVM_SUPPORTS_GET_GENERATED_KEYS) log.info("JVM does not support Statement.getGeneratedKeys()");
boolean linkedHashSupport;
try {
Class.forName("java.util.LinkedHashSet");
linkedHashSupport = true;
}
catch (ClassNotFoundException cnfe) {
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");
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;
if (JVM_HAS_JDK14_TIMESTAMP) {
log.info("using JDK 1.4 java.sql.Timestamp handling");
}
else {
log.info("using pre JDK 1.4 java.sql.Timestamp handling");
}
}
public static BytecodeProvider getBytecodeProvider() {
return BYTECODE_PROVIDER_INSTANCE;
}
/**
* Does this JVM have the IBM JDK 1.3.1. The bug is <tt>new Timestamp(x).getTime()!=x</tt>.
*/
public static boolean jvmHasTimestampBug() {
return JVM_HAS_TIMESTAMP_BUG;
}
/**
* Does this JVM handle <tt>Timestamp</tt> in the JDK 1.4 compliant way?
*/
public static boolean jvmHasJDK14Timestamp() {
return JVM_HAS_JDK14_TIMESTAMP;
}
/**
* Does this JVM support <tt>LinkedHashSet</tt>, <tt>LinkedHashMap</tt>.
* @see java.util.LinkedHashSet
* @see java.util.LinkedHashMap
*/
public static boolean jvmSupportsLinkedHashCollections() {
return JVM_SUPPORTS_LINKED_HASH_COLLECTIONS;
}
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
*/
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
*/
public static boolean useReflectionOptimizer() {
return ENABLE_REFLECTION_OPTIMIZER;
}
private Environment() { throw new UnsupportedOperationException(); }
/**
* Return <tt>System</tt> properties, extended by any properties specified
* in <tt>hibernate.properties</tt>.
* @return Properties
*/
public static Properties getProperties() {
Properties copy = new Properties();
copy.putAll(GLOBAL_PROPERTIES);
return copy;
}
/**
* Get the name of a JDBC transaction isolation level
*
* @see java.sql.Connection
* @param isolation as defined by <tt>java.sql.Connection</tt>
* @return a human-readable name
*/
public static String isolationLevelToString(int isolation) {
return (String) ISOLATION_LEVELS.get( new Integer(isolation) );
}
public static BytecodeProvider buildBytecodeProvider(Properties properties) {
String provider = PropertiesHelper.getString( Environment.BYTECODE_PROVIDER, properties, "cglib" );
log.info( "Bytecode provider name : " + provider );
return buildBytecodeProvider( provider );
}
private static BytecodeProvider buildBytecodeProvider(String providerName) {
if ( "javassist".equals( providerName ) ) {
return new org.hibernate.bytecode.javassist.BytecodeProviderImpl();
}
else if ( "cglib".equals( providerName ) ) {
return new org.hibernate.bytecode.cglib.BytecodeProviderImpl();
}
else {
log.warn( "unrecognized bytecode provider [" + providerName + "], using cglib by default" );
return new org.hibernate.bytecode.cglib.BytecodeProviderImpl();
}
}
}
|