/*
* Copyright 2014 byteslounge.com (Gonçalo Marques).
*
* 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
*
* 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.byteslounge.cdi.resolver.verifier;
import com.byteslounge.cdi.exception.ExtensionInitializationException;
/**
* Checks if the reserved property resolver method parameters order is properly
* configured
*
* @author Gonçalo Marques
* @since 1.0.0
*/
public class ParameterIndexVerifier implements ResolverMethodVerifier {
private final int localeParameterIndex;
private final int bundleNameParameterIndex;
public ParameterIndexVerifier(int localeParameterIndex, int bundleNameParameterIndex) {
this.localeParameterIndex = localeParameterIndex;
this.bundleNameParameterIndex = bundleNameParameterIndex;
}
/**
* See {@link ResolverMethodVerifier#verify()}
*/
@Override
public void verify() {
if (localeParameterIndex > -1 && localeParameterIndex != 0) {
throw new ExtensionInitializationException("Locale parameter, if present in property resolver method, must be the first one.");
}
if (bundleNameParameterIndex > -1 && localeParameterIndex == -1 && bundleNameParameterIndex != 0) {
throw new ExtensionInitializationException(
"BundleName parameter, if present in property resolver method without Locale parameter, must be the first one.");
}
if (localeParameterIndex > -1 && bundleNameParameterIndex > -1 && (bundleNameParameterIndex - localeParameterIndex != 1)) {
throw new ExtensionInitializationException("BundleName parameter must be right after Locale parameter in property resolver method.");
}
}
}