//$Id: SettingsFactory.java 11403 2007-04-11 14:25:13Z steve.ebersole@jboss.com $
package org.hibernate.cfg;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Map;
import java.util.Properties;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.ConnectionReleaseMode;
import org.hibernate.EntityMode;
import org.hibernate.HibernateException;
import org.hibernate.bytecode.BytecodeProvider;
import org.hibernate.cache.CacheProvider;
import org.hibernate.cache.NoCacheProvider;
import org.hibernate.cache.QueryCacheFactory;
import org.hibernate.connection.ConnectionProvider;
import org.hibernate.connection.ConnectionProviderFactory;
import org.hibernate.dialect.Dialect;
import org.hibernate.dialect.DialectFactory;
import org.hibernate.exception.SQLExceptionConverter;
import org.hibernate.exception.SQLExceptionConverterFactory;
import org.hibernate.hql.QueryTranslatorFactory;
import org.hibernate.jdbc.BatcherFactory;
import org.hibernate.jdbc.BatchingBatcherFactory;
import org.hibernate.jdbc.NonBatchingBatcherFactory;
import org.hibernate.transaction.TransactionFactory;
import org.hibernate.transaction.TransactionFactoryFactory;
import org.hibernate.transaction.TransactionManagerLookup;
import org.hibernate.transaction.TransactionManagerLookupFactory;
import org.hibernate.util.PropertiesHelper;
import org.hibernate.util.ReflectHelper;
import org.hibernate.util.StringHelper;
/**
* Reads configuration properties and configures a <tt>Settings</tt> instance.
*
* @author Gavin King
*/
public class SettingsFactory implements Serializable {
private static final Log log = LogFactory.getLog(SettingsFactory.class);
public static final String DEF_CACHE_PROVIDER = NoCacheProvider.class.getName();
protected SettingsFactory() throws HibernateException {}
public Settings buildSettings(Properties props) {
Settings settings = new Settings();
//SessionFactory name:
String sessionFactoryName = props.getProperty(Environment.SESSION_FACTORY_NAME);
settings.setSessionFactoryName(sessionFactoryName);
//JDBC and connection settings:
ConnectionProvider connections = createConnectionProvider(props);
settings.setConnectionProvider(connections);
//Interrogate JDBC metadata
String databaseName = null;
int databaseMajorVersion = 0;
boolean metaSupportsScrollable = false;
boolean metaSupportsGetGeneratedKeys = false;
boolean metaSupportsBatchUpdates = false;
boolean metaReportsDDLCausesTxnCommit = false;
boolean metaReportsDDLInTxnSupported = true;
// 'hibernate.temp.use_jdbc_metadata_defaults' is a temporary magic value.
// The need for it is intended to be alleviated with 3.3 developement, thus it is
// not defined as an Environment constant...
// it is used to control whether we should consult the JDBC metadata to determine
// certain Settings default values; it is useful to *not* do this when the database
// may not be available (mainly in tools usage).
boolean useJdbcMetadata = PropertiesHelper.getBoolean( "hibernate.temp.use_jdbc_metadata_defaults", props, true );
if ( useJdbcMetadata ) {
try {
Connection conn = connections.getConnection();
try {
DatabaseMetaData meta = conn.getMetaData();
databaseName = meta.getDatabaseProductName();
databaseMajorVersion = getDatabaseMajorVersion(meta);
log.info("RDBMS: " + databaseName + ", version: " + meta.getDatabaseProductVersion() );
log.info("JDBC driver: " + meta.getDriverName() + ", version: " + meta.getDriverVersion() );
metaSupportsScrollable = meta.supportsResultSetType(ResultSet.TYPE_SCROLL_INSENSITIVE);
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;
}
}
}
finally {
connections.closeConnection(conn);
}
}
catch (SQLException sqle) {
log.warn("Could not obtain connection metadata", sqle);
}
catch (UnsupportedOperationException uoe) {
// user supplied JDBC connections
}
}
settings.setDataDefinitionImplicitCommit( metaReportsDDLCausesTxnCommit );
settings.setDataDefinitionInTransactionSupported( metaReportsDDLInTxnSupported );
//SQL Dialect:
Dialect dialect = determineDialect( props, databaseName, databaseMajorVersion );
settings.setDialect(dialect);
//use dialect default properties
final Properties properties = new Properties();
properties.putAll( dialect.getDefaultProperties() );
properties.putAll(props);
// Transaction settings:
TransactionFactory transactionFactory = createTransactionFactory(properties);
settings.setTransactionFactory(transactionFactory);
settings.setTransactionManagerLookup( createTransactionManagerLookup(properties) );
boolean flushBeforeCompletion = PropertiesHelper.getBoolean(Environment.FLUSH_BEFORE_COMPLETION, properties);
log.info("Automatic flush during beforeCompletion(): " + enabledDisabled(flushBeforeCompletion) );
settings.setFlushBeforeCompletionEnabled(flushBeforeCompletion);
boolean autoCloseSession = PropertiesHelper.getBoolean(Environment.AUTO_CLOSE_SESSION, properties);
log.info("Automatic session close at end of transaction: " + enabledDisabled(autoCloseSession) );
settings.setAutoCloseSessionEnabled(autoCloseSession);
//JDBC and connection settings:
int batchSize = PropertiesHelper.getInt(Environment.STATEMENT_BATCH_SIZE, properties, 0);
if ( !metaSupportsBatchUpdates ) batchSize = 0;
if (batchSize>0) log.info("JDBC batch size: " + batchSize);
settings.setJdbcBatchSize(batchSize);
boolean jdbcBatchVersionedData = PropertiesHelper.getBoolean(Environment.BATCH_VERSIONED_DATA, properties, false);
if (batchSize>0) log.info("JDBC batch updates for versioned data: " + enabledDisabled(jdbcBatchVersionedData) );
settings.setJdbcBatchVersionedData(jdbcBatchVersionedData);
settings.setBatcherFactory( createBatcherFactory(properties, batchSize) );
boolean useScrollableResultSets = PropertiesHelper.getBoolean(Environment.USE_SCROLLABLE_RESULTSET, properties, metaSupportsScrollable);
log.info("Scrollable result sets: " + enabledDisabled(useScrollableResultSets) );
settings.setScrollableResultSetsEnabled(useScrollableResultSets);
boolean wrapResultSets = PropertiesHelper.getBoolean(Environment.WRAP_RESULT_SETS, properties, false);
log.debug( "Wrap result sets: " + enabledDisabled(wrapResultSets) );
settings.setWrapResultSetsEnabled(wrapResultSets);
boolean useGetGeneratedKeys = PropertiesHelper.getBoolean(Environment.USE_GET_GENERATED_KEYS, properties, metaSupportsGetGeneratedKeys);
log.info("JDBC3 getGeneratedKeys(): " + enabledDisabled(useGetGeneratedKeys) );
settings.setGetGeneratedKeysEnabled(useGetGeneratedKeys);
Integer statementFetchSize = PropertiesHelper.getInteger(Environment.STATEMENT_FETCH_SIZE, properties);
if (statementFetchSize!=null) log.info("JDBC result set fetch size: " + statementFetchSize);
settings.setJdbcFetchSize(statementFetchSize);
String releaseModeName = PropertiesHelper.getString( Environment.RELEASE_CONNECTIONS, properties, "auto" );
log.info( "Connection release mode: " + releaseModeName );
ConnectionReleaseMode releaseMode;
if ( "auto".equals(releaseModeName) ) {
releaseMode = transactionFactory.getDefaultReleaseMode();
}
else {
releaseMode = ConnectionReleaseMode.parse( releaseModeName );
if ( releaseMode == ConnectionReleaseMode.AFTER_STATEMENT && !connections.supportsAggressiveRelease() ) {
log.warn( "Overriding release mode as connection provider does not support 'after_statement'" );
releaseMode = ConnectionReleaseMode.AFTER_TRANSACTION;
}
}
settings.setConnectionReleaseMode( releaseMode );
//SQL Generation settings:
String defaultSchema = properties.getProperty(Environment.DEFAULT_SCHEMA);
String defaultCatalog = properties.getProperty(Environment.DEFAULT_CATALOG);
if (defaultSchema!=null) log.info("Default schema: " + defaultSchema);
if (defaultCatalog!=null) log.info("Default catalog: " + defaultCatalog);
settings.setDefaultSchemaName(defaultSchema);
settings.setDefaultCatalogName(defaultCatalog);
Integer maxFetchDepth = PropertiesHelper.getInteger(Environment.MAX_FETCH_DEPTH, properties);
if (maxFetchDepth!=null) log.info("Maximum outer join fetch depth: " + maxFetchDepth);
settings.setMaximumFetchDepth(maxFetchDepth);
int batchFetchSize = PropertiesHelper.getInt(Environment.DEFAULT_BATCH_FETCH_SIZE, properties, 1);
log.info("Default batch fetch size: " + batchFetchSize);
settings.setDefaultBatchFetchSize(batchFetchSize);
boolean comments = PropertiesHelper.getBoolean(Environment.USE_SQL_COMMENTS, properties);
log.info( "Generate SQL with comments: " + enabledDisabled(comments) );
settings.setCommentsEnabled(comments);
boolean orderUpdates = PropertiesHelper.getBoolean( Environment.ORDER_UPDATES, properties );
log.info( "Order SQL updates by primary key: " + enabledDisabled( orderUpdates ) );
settings.setOrderUpdatesEnabled( orderUpdates );
boolean orderInserts = PropertiesHelper.getBoolean(Environment.ORDER_INSERTS, properties);
log.info( "Order SQL inserts for batching: " + enabledDisabled( orderInserts ) );
settings.setOrderInsertsEnabled( orderInserts );
//Query parser settings:
settings.setQueryTranslatorFactory( createQueryTranslatorFactory(properties) );
Map querySubstitutions = PropertiesHelper.toMap(Environment.QUERY_SUBSTITUTIONS, " ,=;:\n\t\r\f", properties);
log.info("Query language substitutions: " + querySubstitutions);
settings.setQuerySubstitutions(querySubstitutions);
boolean jpaqlCompliance = PropertiesHelper.getBoolean( Environment.JPAQL_STRICT_COMPLIANCE, properties, false );
settings.setStrictJPAQLCompliance( jpaqlCompliance );
log.info( "JPA-QL strict compliance: " + enabledDisabled( jpaqlCompliance ) );
// Second-level / query cache:
boolean useSecondLevelCache = PropertiesHelper.getBoolean(Environment.USE_SECOND_LEVEL_CACHE, properties, true);
log.info( "Second-level cache: " + enabledDisabled(useSecondLevelCache) );
settings.setSecondLevelCacheEnabled(useSecondLevelCache);
boolean useQueryCache = PropertiesHelper.getBoolean(Environment.USE_QUERY_CACHE, properties);
log.info( "Query cache: " + enabledDisabled(useQueryCache) );
settings.setQueryCacheEnabled(useQueryCache);
if ( useSecondLevelCache || useQueryCache ) {
// The cache provider is needed when we either have second-level cache enabled
// or query cache enabled. Note that useSecondLevelCache is enabled by default
settings.setCacheProvider( createCacheProvider( properties ) );
}
else {
settings.setCacheProvider( new NoCacheProvider() );
}
boolean useMinimalPuts = PropertiesHelper.getBoolean(
Environment.USE_MINIMAL_PUTS, properties, settings.getCacheProvider().isMinimalPutsEnabledByDefault()
);
log.info( "Optimize cache for minimal puts: " + enabledDisabled(useMinimalPuts) );
settings.setMinimalPutsEnabled(useMinimalPuts);
String prefix = properties.getProperty(Environment.CACHE_REGION_PREFIX);
if ( StringHelper.isEmpty(prefix) ) prefix=null;
if (prefix!=null) log.info("Cache region prefix: "+ prefix);
settings.setCacheRegionPrefix(prefix);
boolean useStructuredCacheEntries = PropertiesHelper.getBoolean(Environment.USE_STRUCTURED_CACHE, properties, false);
log.info( "Structured second-level cache entries: " + enabledDisabled(useStructuredCacheEntries) );
settings.setStructuredCacheEntriesEnabled(useStructuredCacheEntries);
if (useQueryCache) settings.setQueryCacheFactory( createQueryCacheFactory(properties) );
//SQL Exception converter:
SQLExceptionConverter sqlExceptionConverter;
try {
sqlExceptionConverter = SQLExceptionConverterFactory.buildSQLExceptionConverter( dialect, properties );
}
catch(HibernateException e) {
log.warn("Error building SQLExceptionConverter; using minimal converter");
sqlExceptionConverter = SQLExceptionConverterFactory.buildMinimalSQLExceptionConverter();
}
settings.setSQLExceptionConverter(sqlExceptionConverter);
//Statistics and logging:
boolean showSql = PropertiesHelper.getBoolean(Environment.SHOW_SQL, properties);
if (showSql) log.info("Echoing all SQL to stdout");
settings.setShowSqlEnabled(showSql);
boolean formatSql = PropertiesHelper.getBoolean(Environment.FORMAT_SQL, properties);
settings.setFormatSqlEnabled(formatSql);
boolean useStatistics = PropertiesHelper.getBoolean(Environment.GENERATE_STATISTICS, properties);
log.info( "Statistics: " + enabledDisabled(useStatistics) );
settings.setStatisticsEnabled(useStatistics);
boolean useIdentifierRollback = PropertiesHelper.getBoolean(Environment.USE_IDENTIFIER_ROLLBACK, properties);
log.info( "Deleted entity synthetic identifier rollback: " + enabledDisabled(useIdentifierRollback) );
settings.setIdentifierRollbackEnabled(useIdentifierRollback);
//Schema export:
String autoSchemaExport = properties.getProperty(Environment.HBM2DDL_AUTO);
if ( "validate".equals(autoSchemaExport) ) settings.setAutoValidateSchema(true);
if ( "update".equals(autoSchemaExport) ) settings.setAutoUpdateSchema(true);
if ( "create".equals(autoSchemaExport) ) settings.setAutoCreateSchema(true);
if ( "create-drop".equals(autoSchemaExport) ) {
settings.setAutoCreateSchema(true);
settings.setAutoDropSchema(true);
}
EntityMode defaultEntityMode = EntityMode.parse( properties.getProperty( Environment.DEFAULT_ENTITY_MODE ) );
log.info( "Default entity-mode: " + defaultEntityMode );
settings.setDefaultEntityMode( defaultEntityMode );
boolean namedQueryChecking = PropertiesHelper.getBoolean( Environment.QUERY_STARTUP_CHECKING, properties, true );
log.info( "Named query checking : " + enabledDisabled( namedQueryChecking ) );
settings.setNamedQueryStartupCheckingEnabled( namedQueryChecking );
// String provider = properties.getProperty( Environment.BYTECODE_PROVIDER );
// log.info( "Bytecode provider name : " + provider );
// BytecodeProvider bytecodeProvider = buildBytecodeProvider( provider );
// settings.setBytecodeProvider( bytecodeProvider );
return settings;
}
protected 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.debug( "using cglib as bytecode provider by default" );
return new org.hibernate.bytecode.cglib.BytecodeProviderImpl();
}
}
private int getDatabaseMajorVersion(DatabaseMetaData meta) {
try {
Method gdbmvMethod = DatabaseMetaData.class.getMethod("getDatabaseMajorVersion", null);
return ( (Integer) gdbmvMethod.invoke(meta, null) ).intValue();
}
catch (NoSuchMethodException nsme) {
return 0;
}
catch (Throwable t) {
log.debug("could not get database version from JDBC metadata");
return 0;
}
}
private static String enabledDisabled(boolean value) {
return value ? "enabled" : "disabled";
}
protected QueryCacheFactory createQueryCacheFactory(Properties properties) {
String queryCacheFactoryClassName = PropertiesHelper.getString(
Environment.QUERY_CACHE_FACTORY, properties, "org.hibernate.cache.StandardQueryCacheFactory"
);
log.info("Query cache factory: " + queryCacheFactoryClassName);
try {
return (QueryCacheFactory) ReflectHelper.classForName(queryCacheFactoryClassName).newInstance();
}
catch (Exception cnfe) {
throw new HibernateException("could not instantiate QueryCacheFactory: " + queryCacheFactoryClassName, cnfe);
}
}
protected CacheProvider createCacheProvider(Properties properties) {
String cacheClassName = PropertiesHelper.getString(
Environment.CACHE_PROVIDER, properties, DEF_CACHE_PROVIDER
);
log.info("Cache provider: " + cacheClassName);
try {
return (CacheProvider) ReflectHelper.classForName(cacheClassName).newInstance();
}
catch (Exception cnfe) {
throw new HibernateException("could not instantiate CacheProvider: " + cacheClassName, cnfe);
}
}
protected QueryTranslatorFactory createQueryTranslatorFactory(Properties properties) {
String className = PropertiesHelper.getString(
Environment.QUERY_TRANSLATOR, properties, "org.hibernate.hql.ast.ASTQueryTranslatorFactory"
);
log.info("Query translator: " + className);
try {
return (QueryTranslatorFactory) ReflectHelper.classForName(className).newInstance();
}
catch (Exception cnfe) {
throw new HibernateException("could not instantiate QueryTranslatorFactory: " + className, cnfe);
}
}
protected BatcherFactory createBatcherFactory(Properties properties, int batchSize) {
String batcherClass = properties.getProperty(Environment.BATCH_STRATEGY);
if (batcherClass==null) {
return batchSize==0 ?
(BatcherFactory) new NonBatchingBatcherFactory() :
(BatcherFactory) new BatchingBatcherFactory();
}
else {
log.info("Batcher factory: " + batcherClass);
try {
return (BatcherFactory) ReflectHelper.classForName(batcherClass).newInstance();
}
catch (Exception cnfe) {
throw new HibernateException("could not instantiate BatcherFactory: " + batcherClass, cnfe);
}
}
}
protected ConnectionProvider createConnectionProvider(Properties properties) {
return ConnectionProviderFactory.newConnectionProvider(properties);
}
protected TransactionFactory createTransactionFactory(Properties properties) {
return TransactionFactoryFactory.buildTransactionFactory(properties);
}
protected TransactionManagerLookup createTransactionManagerLookup(Properties properties) {
return TransactionManagerLookupFactory.getTransactionManagerLookup(properties);
}
private Dialect determineDialect(Properties props, String databaseName, int databaseMajorVersion) {
return DialectFactory.buildDialect( props, databaseName, databaseMajorVersion );
}
}
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