/** {@inheritDoc} */
public Configuration get() {
final Configuration configuration = new Configuration(environment);
configuration.setLazyLoadingEnabled(lazyLoadingEnabled);
configuration.setAggressiveLazyLoading(aggressiveLazyLoading);
configuration.setMultipleResultSetsEnabled(multipleResultSetsEnabled);
configuration.setUseGeneratedKeys(useGeneratedKeys);
configuration.setUseColumnLabel(useColumnLabel);
configuration.setCacheEnabled(cacheEnabled);
configuration.setDefaultExecutorType(defaultExecutorType);
configuration.setAutoMappingBehavior(autoMappingBehavior);
configuration.setObjectFactory(objectFactory);
configuration.setObjectWrapperFactory(objectWrapperFactory);
configuration.setDefaultScriptingLanguage(defaultScriptingLanguageType);
configuration.setMapUnderscoreToCamelCase(mapUnderscoreToCamelCase);
configuration.setCallSettersOnNulls(callSettersOnNulls);
configuration.setDefaultStatementTimeout(defaultStatementTimeout);
try {
if (databaseIdProvider != null) {
configuration.setDatabaseId(databaseIdProvider.getDatabaseId(dataSource));
}
for (Map.Entry<String, Class<?>> alias : typeAliases.entrySet()) {
configuration.getTypeAliasRegistry().registerAlias(alias.getKey(), alias.getValue());
}
for (Map.Entry<Class<?>, TypeHandler<?>> typeHandler : typeHandlers.entrySet()) {
registerTypeHandler(configuration, typeHandler.getKey(), typeHandler.getValue());
}
for (TypeHandler<?> typeHandler : mappingTypeHandlers) {
configuration.getTypeHandlerRegistry().register(typeHandler);
}
for (Class<?> mapperClass : mapperClasses) {
if (!configuration.hasMapper(mapperClass)) {
configuration.addMapper(mapperClass);
}
}
for (Interceptor interceptor : plugins) {
configuration.addInterceptor(interceptor);
}
if (failFast) {
configuration.getMappedStatementNames();
}
} catch (Throwable cause) {
throw new ProvisionException(
"An error occurred while building the org.apache.ibatis.session.Configuration", cause);
} finally {
ErrorContext.instance().reset();
}
return configuration;
}
/**
* Creates the SQL schema during service start-up. Note: This design assumes a volatile database
* engine.
*/
@Override
@Transactional
protected void startUp() throws IOException {
Configuration configuration = sessionFactory.getConfiguration();
String createStatementName = "create_tables";
configuration.setMapUnderscoreToCamelCase(true);
configuration.addMappedStatement(
new Builder(
configuration,
createStatementName,
new StaticSqlSource(
configuration,
CharStreams.toString(
new InputStreamReader(
DbStorage.class.getResourceAsStream("schema.sql"), Charsets.UTF_8))),
SqlCommandType.UPDATE)
.build());
try (SqlSession session = sessionFactory.openSession()) {
session.update(createStatementName);
}
}