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KeyGenerators should not return a plain array parameter as raw key but rather always handle that case in a deepHashCode fashion

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Issue: SPR-11505
(cherry picked from commit e50cff4)
This commit is contained in:
Juergen Hoeller
2014-03-05 17:37:09 +01:00
parent 7e2a214f32
commit 70155e9ff9
2 changed files with 132 additions and 10 deletions
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23
spring-context/src/main/java/org/springframework/cache/interceptor/DefaultKeyGenerator.java vendored
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2011 the original author or authors.
* Copyright 2002-2014 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.
@@ -17,8 +17,7 @@
package org.springframework.cache.interceptor;
import java.lang.reflect.Method;
import org.springframework.cache.interceptor.KeyGenerator;
import java.util.Arrays;
/**
* Default key generator. Returns {@value #NO_PARAM_KEY} if no
@@ -29,25 +28,29 @@ import org.springframework.cache.interceptor.KeyGenerator;
*
* @author Costin Leau
* @author Chris Beams
* @author Juergen Hoeller
* @since 3.1
*/
public class DefaultKeyGenerator implements KeyGenerator {
public static final int NO_PARAM_KEY = 0;
public static final int NULL_PARAM_KEY = 53;
public Object generate(Object target, Method method, Object... params) {
if (params.length == 1) {
return (params[0] == null ? NULL_PARAM_KEY : params[0]);
}
if (params.length == 0) {
return NO_PARAM_KEY;
}
int hashCode = 17;
for (Object object : params) {
hashCode = 31 * hashCode + (object == null ? NULL_PARAM_KEY : object.hashCode());
if (params.length == 1) {
Object param = params[0];
if (param == null) {
return NULL_PARAM_KEY;
}
if (!param.getClass().isArray()) {
return param;
}
}
return Integer.valueOf(hashCode);
return Arrays.deepHashCode(params);
}
}