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ElementFilter now CollectionFilter

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Refactored filter to handle a Collection of Resources

Made 'pattern' a constructor-arg since it's mandatory
This commit is contained in:
Mark Fisher
2011-11-22 12:57:48 -05:00
parent 193f3d2439
commit 32d64b19f4
5 changed files with 72 additions and 58 deletions
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32
spring-integration-core/src/test/java/org/springframework/integration/resource/ResourcePatternResolverParserTests.java
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@@ -13,9 +13,18 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.integration.resource;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.io.File;
import java.util.Collection;
import java.util.Collections;
import org.junit.Test;
@@ -27,13 +36,8 @@ import org.springframework.integration.Message;
import org.springframework.integration.channel.QueueChannel;
import org.springframework.integration.endpoint.SourcePollingChannelAdapter;
import org.springframework.integration.test.util.TestUtils;
import org.springframework.integration.util.ElementFilter;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import org.springframework.integration.util.CollectionFilter;
import org.springframework.util.CollectionUtils;
/**
* @author Oleg Zhurakousky
@@ -114,19 +118,19 @@ public class ResourcePatternResolverParserTests {
assertNull(message);
}
public static class OneItemAndNeverAgainResourceListFilter implements ElementFilter<Resource> {
public static class OneItemAndNeverAgainResourceListFilter implements CollectionFilter<Resource> {
private volatile boolean once = false;
public Resource filter(Resource unfilteredElement) {
if (!once){
public Collection<Resource> filter(Collection<Resource> unfilteredResources) {
if (!once && !CollectionUtils.isEmpty(unfilteredResources)) {
once = true;
return unfilteredElement;
return Collections.singletonList(unfilteredResources.iterator().next());
}
return null;
}
}
}