Restore FileListFilter and fix some javadoc links.

spring-integration-file/src/main/java/org/springframework/integration/file/entries/AbstractEntryListFilter.java

@@ -33,6 +33,9 @@ import java.util.List;
 public abstract class AbstractEntryListFilter<T> implements InitializingBean, EntryListFilter<T> {
 	public abstract boolean accept(T t);
 
+	/**
+	 * {@inheritDoc}
+	 */
 	public List<T> filterEntries(T[] entries) {
 		List<T> accepted = new ArrayList<T>();
 

spring-integration-file/src/main/java/org/springframework/integration/file/entries/EntryListFilter.java

@@ -19,18 +19,23 @@ import java.util.List;
 
 
 /**
- * Strategy interface for filtering a group of entries / files.
+ * Strategy interface for filtering entries representing files on a local or remote file system. This is a generic
+ * variant of FileListFilter that also works with references to remote files.
  * <p/>
- * {@link EntryListFilter} that passes file entries only one time. This can
- * conveniently be used to prevent duplication of files, as is done in
- * {@link org.springframework.integration.file.FileReadingMessageSource}.
- * <p/>
- * This implementation is thread safe.
+ * Implementations must be thread safe.
  *
- * @author Iwein Fuld
  * @author Josh Long
- * @since 1.0.0
+ * @author Iwein Fuld
+ *
+ * @since 2.0.0
+ *
+ * @see org.springframework.integration.file.filters.FileListFilter
  */
 public interface EntryListFilter<T> {
+
+    /**
+     * Filters out entries and returns the entries that are left in a list, or an
+     * empty list when a null is passed in.
+     */
 	List<T> filterEntries(T[] entries);
 }

spring-integration-file/src/main/java/org/springframework/integration/file/entries/PatternMatchingEntryListFilter.java

@@ -23,14 +23,14 @@ import java.util.regex.Pattern;
 
 
 /**
- *
- *
  * Filters a listing of entries (T) by qualifying their 'name' (as determined by {@link org.springframework.integration.file.entries.EntryNamer})
  * against a regular expression (an instance of {@link java.util.regex.Pattern})
  *
  * @author Iwein Fuld
  * @author Josh Long
  * @param <T>   the type of entry
+ *
+ * @since 2.0.0
  */
 public class PatternMatchingEntryListFilter<T> extends AbstractEntryListFilter<T> implements InitializingBean {
 	private Pattern pattern;

spring-integration-file/src/main/java/org/springframework/integration/file/filters/FileListFilter.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2002-2008 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.integration.file.filters;
+
+import java.io.File;
+import java.util.List;
+
+/**
+ * Strategy interface for filtering a group of files.
+ *
+ * @author Iwein Fuld
+ *
+ * @since 1.0.0
+ *
+ * @see org.springframework.integration.file.entries.EntryListFilter
+ *
+ */
+public interface FileListFilter {
+
+    /**
+     * Filters out files and returns the files that are left in a list, or an
+     * empty list when a null is passed in.
+     */
+    List<File> filterFiles(File[] files);
+
+}