| 1 | /* |
| 2 | * Copyright 2012-2013 the original author or authors. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.springframework.batch.core.configuration.annotation; |
| 17 | |
| 18 | import org.springframework.context.annotation.ImportSelector; |
| 19 | import org.springframework.core.annotation.AnnotationAttributes; |
| 20 | import org.springframework.core.type.AnnotationMetadata; |
| 21 | import org.springframework.util.Assert; |
| 22 | |
| 23 | /** |
| 24 | * Base {@code Configuration} class providing common structure for enabling and using Spring Batch. Customization is |
| 25 | * available by implementing the {@link BatchConfigurer} interface. |
| 26 | * |
| 27 | * @author Dave Syer |
| 28 | * @since 2.2 |
| 29 | * @see EnableBatchProcessing |
| 30 | */ |
| 31 | public class BatchConfigurationSelector implements ImportSelector { |
| 32 | |
| 33 | @Override |
| 34 | public String[] selectImports(AnnotationMetadata importingClassMetadata) { |
| 35 | Class<?> annotationType = EnableBatchProcessing.class; |
| 36 | AnnotationAttributes attributes = AnnotationAttributes.fromMap(importingClassMetadata.getAnnotationAttributes( |
| 37 | annotationType.getName(), false)); |
| 38 | Assert.notNull(attributes, String.format("@%s is not present on importing class '%s' as expected", |
| 39 | annotationType.getSimpleName(), importingClassMetadata.getClassName())); |
| 40 | |
| 41 | String[] imports; |
| 42 | if (attributes.containsKey("modular") && attributes.getBoolean("modular")) { |
| 43 | imports = new String[] { ModularBatchConfiguration.class.getName() }; |
| 44 | } |
| 45 | else { |
| 46 | imports = new String[] { SimpleBatchConfiguration.class.getName() }; |
| 47 | } |
| 48 | |
| 49 | return imports; |
| 50 | } |
| 51 | |
| 52 | } |