org.springframework.cglib.core.SpringNamingPolicy Maven / Gradle / Ivy
/*
* Copyright 2002-2022 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
*
* https://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.cglib.core;
/**
* Custom variant of CGLIB's {@link DefaultNamingPolicy}, modifying the tag
* in generated class names from "EnhancerByCGLIB" etc to a "SpringCGLIB" tag
* and using a plain counter suffix instead of a hash code suffix (as of 6.0).
*
* This allows for reliably discovering pre-generated Spring proxy classes
* in the classpath.
*
* @author Juergen Hoeller
* @since 3.2.8 / 6.0
*/
public final class SpringNamingPolicy implements NamingPolicy {
public static final SpringNamingPolicy INSTANCE = new SpringNamingPolicy();
private static final String LABEL = "$$SpringCGLIB$$";
private SpringNamingPolicy() {
}
@Override
public String getClassName(String prefix, String source, Object key, Predicate names) {
if (prefix == null) {
prefix = "org.springframework.cglib.empty.Object";
}
else if (prefix.startsWith("java.") || prefix.startsWith("javax.")) {
prefix = "_" + prefix;
}
String base;
int existingLabel = prefix.indexOf(LABEL);
if (existingLabel >= 0) {
base = prefix.substring(0, existingLabel + LABEL.length());
}
else {
base = prefix + LABEL;
}
int index = 0;
String attempt = base + index;
while (names.evaluate(attempt)) {
attempt = base + index++;
}
return attempt;
}
}