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* 修正排序 * Update dubbo-common/src/main/java/com/alibaba/dubbo/common/extension/support/ActivateComparator.java code style Co-Authored-By: dongYES <[email protected]>
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...o-common/src/main/java/com/alibaba/dubbo/common/extension/support/ActivateComparator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,86 +1,94 @@ | ||
| /* | ||
| * 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 com.alibaba.dubbo.common.extension.support; | ||
|
|
||
| import com.alibaba.dubbo.common.extension.Activate; | ||
| import com.alibaba.dubbo.common.extension.ExtensionLoader; | ||
| import com.alibaba.dubbo.common.extension.SPI; | ||
|
|
||
| import java.util.Comparator; | ||
|
|
||
| /** | ||
| * OrderComparetor | ||
| */ | ||
| public class ActivateComparator implements Comparator<Object> { | ||
|
|
||
| public static final Comparator<Object> COMPARATOR = new ActivateComparator(); | ||
|
|
||
| @Override | ||
| public int compare(Object o1, Object o2) { | ||
| if (o1 == null && o2 == null) { | ||
| return 0; | ||
| } | ||
| if (o1 == null) { | ||
| return -1; | ||
| } | ||
| if (o2 == null) { | ||
| return 1; | ||
| } | ||
| if (o1.equals(o2)) { | ||
| return 0; | ||
| } | ||
| Activate a1 = o1.getClass().getAnnotation(Activate.class); | ||
| Activate a2 = o2.getClass().getAnnotation(Activate.class); | ||
| if ((a1.before().length > 0 || a1.after().length > 0 | ||
| || a2.before().length > 0 || a2.after().length > 0) | ||
| && o1.getClass().getInterfaces().length > 0 | ||
| && o1.getClass().getInterfaces()[0].isAnnotationPresent(SPI.class)) { | ||
| ExtensionLoader<?> extensionLoader = ExtensionLoader.getExtensionLoader(o1.getClass().getInterfaces()[0]); | ||
| if (a1.before().length > 0 || a1.after().length > 0) { | ||
| String n2 = extensionLoader.getExtensionName(o2.getClass()); | ||
| for (String before : a1.before()) { | ||
| if (before.equals(n2)) { | ||
| return -1; | ||
| } | ||
| } | ||
| for (String after : a1.after()) { | ||
| if (after.equals(n2)) { | ||
| return 1; | ||
| } | ||
| } | ||
| } | ||
| if (a2.before().length > 0 || a2.after().length > 0) { | ||
| String n1 = extensionLoader.getExtensionName(o1.getClass()); | ||
| for (String before : a2.before()) { | ||
| if (before.equals(n1)) { | ||
| return 1; | ||
| } | ||
| } | ||
| for (String after : a2.after()) { | ||
| if (after.equals(n1)) { | ||
| return -1; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| int n1 = a1 == null ? 0 : a1.order(); | ||
| int n2 = a2 == null ? 0 : a2.order(); | ||
| // never return 0 even if n1 equals n2, otherwise, o1 and o2 will override each other in collection like HashSet | ||
| return n1 > n2 ? 1 : -1; | ||
| } | ||
|
|
||
| } | ||
| /* | ||
| * 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 com.alibaba.dubbo.common.extension.support; | ||
|
|
||
| import com.alibaba.dubbo.common.extension.Activate; | ||
| import com.alibaba.dubbo.common.extension.ExtensionLoader; | ||
| import com.alibaba.dubbo.common.extension.SPI; | ||
|
|
||
| import java.util.Comparator; | ||
|
|
||
| /** | ||
| * OrderComparetor | ||
| */ | ||
| public class ActivateComparator implements Comparator<Object> { | ||
|
|
||
| public static final Comparator<Object> COMPARATOR = new ActivateComparator(); | ||
|
|
||
| @Override | ||
| public int compare(Object o1, Object o2) { | ||
| if (o1 == null && o2 == null) { | ||
| return 0; | ||
| } | ||
| if (o1 == null) { | ||
| return -1; | ||
| } | ||
| if (o2 == null) { | ||
| return 1; | ||
| } | ||
| if (o1.equals(o2)) { | ||
| return 0; | ||
| } | ||
| Activate a1 = o1.getClass().getAnnotation(Activate.class); | ||
| Activate a2 = o2.getClass().getAnnotation(Activate.class); | ||
| Class<?> spiClass = null; | ||
| if (o1.getClass().getInterfaces().length > 0) { | ||
| for (Class<?> item : o1.getClass().getInterfaces()) { | ||
| if (item.isAnnotationPresent(SPI.class)) { | ||
| spiClass = item; | ||
| break; | ||
| } | ||
| } | ||
| } | ||
| if ((a1.before().length > 0 || a1.after().length > 0 | ||
| || a2.before().length > 0 || a2.after().length > 0) | ||
| && spiClass != null) { | ||
| ExtensionLoader<?> extensionLoader = ExtensionLoader.getExtensionLoader(spiClass); | ||
| if (a1.before().length > 0 || a1.after().length > 0) { | ||
| String n2 = extensionLoader.getExtensionName(o2.getClass()); | ||
| for (String before : a1.before()) { | ||
| if (before.equals(n2)) { | ||
| return -1; | ||
| } | ||
| } | ||
| for (String after : a1.after()) { | ||
| if (after.equals(n2)) { | ||
| return 1; | ||
| } | ||
| } | ||
| } | ||
| if (a2.before().length > 0 || a2.after().length > 0) { | ||
| String n1 = extensionLoader.getExtensionName(o1.getClass()); | ||
| for (String before : a2.before()) { | ||
| if (before.equals(n1)) { | ||
| return 1; | ||
| } | ||
| } | ||
| for (String after : a2.after()) { | ||
| if (after.equals(n1)) { | ||
| return -1; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| int n1 = a1 == null ? 0 : a1.order(); | ||
| int n2 = a2 == null ? 0 : a2.order(); | ||
| // never return 0 even if n1 equals n2, otherwise, o1 and o2 will override each other in collection like HashSet | ||
| return n1 > n2 ? 1 : -1; | ||
| } | ||
|
|
||
| } |