| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.camel.component.file; |
| |
| import java.util.Comparator; |
| |
| import org.apache.camel.CamelContext; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Expression; |
| import org.apache.camel.spi.Language; |
| import org.apache.camel.util.ObjectHelper; |
| |
| /** |
| * Default file sorter. |
| */ |
| public final class GenericFileDefaultSorter { |
| |
| private GenericFileDefaultSorter() { |
| } |
| |
| /** |
| * Returns a new sort by name |
| */ |
| public static Comparator<GenericFile<?>> sortByName(final boolean reverse) { |
| return new Comparator<GenericFile<?>>() { |
| public int compare(GenericFile<?> o1, GenericFile<?> o2) { |
| int answer = o1.getFileName().compareTo(o2.getFileName()); |
| return reverse ? -1 * answer : answer; |
| } |
| }; |
| } |
| |
| /** |
| * Returns a new sort by path name |
| */ |
| public static Comparator<GenericFile<?>> sortByPathName(final boolean reverse) { |
| return new Comparator<GenericFile<?>>() { |
| public int compare(GenericFile<?> o1, GenericFile<?> o2) { |
| int answer = o1.getParent().compareTo(o2.getParent()); |
| return reverse ? -1 * answer : answer; |
| } |
| }; |
| } |
| |
| /** |
| * Returns a new sort by last modified (newest first) |
| */ |
| public static Comparator<GenericFile<?>> sortByLastModified( |
| final boolean reverse) { |
| return new Comparator<GenericFile<?>>() { |
| public int compare(GenericFile<?> o1, GenericFile<?> o2) { |
| long delta = o1.getLastModified() - o2.getLastModified(); |
| if (delta == 0) { |
| return 0; |
| } |
| int answer = delta > 0 ? 1 : -1; |
| return reverse ? -1 * answer : answer; |
| } |
| }; |
| } |
| |
| /** |
| * Returns a new sort by file size (smallest first) |
| */ |
| public static Comparator<GenericFile<?>> sortBySize(final boolean reverse) { |
| return new Comparator<GenericFile<?>>() { |
| public int compare(GenericFile<?> o1, GenericFile<?> o2) { |
| long delta = o1.getFileLength() - o2.getFileLength(); |
| if (delta == 0) { |
| return 0; |
| } |
| int answer = delta > 0 ? 1 : -1; |
| return reverse ? -1 * answer : answer; |
| } |
| }; |
| } |
| |
| /** |
| * Returns a new sory by file language expression |
| * |
| * @param context the camel context |
| * @param expression the file language expression |
| * @param reverse true to reverse order |
| * @return the comparator |
| */ |
| public static Comparator<Exchange> sortByFileLanguage( |
| CamelContext context, String expression, boolean reverse) { |
| return sortByFileLanguage(context, expression, reverse, false, null); |
| } |
| |
| /** |
| * Returns a new sory by file language expression |
| * |
| * @param context the camel context |
| * @param expression the file language expression |
| * @param reverse true to reverse order |
| * @param ignoreCase ignore case if comparing strings |
| * @return the comparator |
| */ |
| public static Comparator<Exchange> sortByFileLanguage( |
| CamelContext context, String expression, boolean reverse, boolean ignoreCase) { |
| return sortByFileLanguage(context, expression, reverse, ignoreCase, null); |
| } |
| |
| /** |
| * Returns a new sort by file language expression |
| * |
| * @param context the camel context |
| * @param expression the file language expression |
| * @param reverse true to reverse order |
| * @param ignoreCase ignore case if comparing strings |
| * @param nested nested comparator for sub group sorting, can be null |
| * @return the comparator |
| */ |
| public static Comparator<Exchange> sortByFileLanguage( |
| final CamelContext context, final String expression, final boolean reverse, |
| final boolean ignoreCase, final Comparator<Exchange> nested) { |
| return new Comparator<Exchange>() { |
| public int compare(Exchange o1, Exchange o2) { |
| Language language = context.resolveLanguage("file"); |
| final Expression exp = language.createExpression(expression); |
| Object result1 = exp.evaluate(o1, Object.class); |
| Object result2 = exp.evaluate(o2, Object.class); |
| int answer = ObjectHelper.compare(result1, result2, ignoreCase); |
| // if equal then sub sort by nested comparator |
| if (answer == 0 && nested != null) { |
| answer = nested.compare(o1, o2); |
| } |
| return reverse ? -1 * answer : answer; |
| } |
| |
| public String toString() { |
| return expression + (nested != null ? ";" + nested.toString() : ""); |
| } |
| }; |
| } |
| |
| } |