/*
* 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.jasper.optimizations;
import org.apache.jasper.compiler.Localizer;
import org.apache.jasper.compiler.StringInterpreterFactory.DefaultStringInterpreter;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
/**
* Provides an optimised conversion of string values to Enums. It bypasses the check for registered PropertyEditor.
*/
public class StringInterpreterEnum extends DefaultStringInterpreter {
// Can't be static
private final Log log = LogFactory.getLog(ELInterpreterTagSetters.class);
@Override
protected String coerceToOtherType(Class<?> c, String s, boolean isNamedAttribute) {
if (c.isEnum() && !isNamedAttribute) {
try {
@SuppressWarnings({ "unchecked", "rawtypes" })
Enum<?> enumValue = Enum.valueOf((Class<? extends Enum>) c, s);
return c.getName() + "." + enumValue.name();
} catch (IllegalArgumentException iae) {
if (log.isDebugEnabled()) {
log.debug(Localizer.getMessage("jsp.error.typeConversion", s, "Enum[" + c.getName() + "]"), iae);
}
// Continue and resolve the value at runtime
}
}
return null;
}
}