org.springframework.transaction.annotation.AbstractTransactionManagementConfiguration Maven / Gradle / Ivy
/*
* Copyright 2002-2012 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.transaction.annotation;
import java.util.Collection;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportAware;
import org.springframework.core.annotation.AnnotationAttributes;
import org.springframework.core.type.AnnotationMetadata;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.util.Assert;
/**
* Abstract base {@code @Configuration} class providing common structure for enabling
* Spring's annotation-driven transaction management capability.
*
* @author Chris Beams
* @since 3.1
* @see EnableTransactionManagement
*/
@Configuration
public abstract class AbstractTransactionManagementConfiguration implements ImportAware {
protected AnnotationAttributes enableTx;
protected PlatformTransactionManager txManager;
public void setImportMetadata(AnnotationMetadata importMetadata) {
this.enableTx = AnnotationAttributes.fromMap(
importMetadata.getAnnotationAttributes(EnableTransactionManagement.class.getName(), false));
Assert.notNull(this.enableTx,
"@EnableTransactionManagement is not present on importing class " +
importMetadata.getClassName());
}
@Autowired(required=false)
void setConfigurers(Collection configurers) {
if (configurers == null || configurers.isEmpty()) {
return;
}
if (configurers.size() > 1) {
throw new IllegalStateException("only one TransactionManagementConfigurer may exist");
}
TransactionManagementConfigurer configurer = configurers.iterator().next();
this.txManager = configurer.annotationDrivenTransactionManager();
}
}