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org.jboss.errai.reflections.scanners.ConvertersScanner Maven / Gradle / Ivy

/*
 * Copyright (C) 2015 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.jboss.errai.reflections.scanners;

import java.util.List;

/** scans for methods that take one class as an argument and returns another class */ 
@SuppressWarnings({"unchecked"})
public class ConvertersScanner extends AbstractScanner {
    public void scan(final Object cls) {
        final List methods = getMetadataAdapter().getMethods(cls);
        for (final Object method : methods) {
            final List parameterNames = getMetadataAdapter().getParameterNames(method);

            if (parameterNames.size() == 1) {
                final String from = parameterNames.get(0);
                final String to = getMetadataAdapter().getReturnTypeName(method);

                if (!to.equals("void") && (acceptResult(from) || acceptResult(to))) {
                    final String methodKey = getMetadataAdapter().getMethodFullKey(cls, method);
                    getStore().put(getConverterKey(from, to), methodKey);
                }
            }
        }
    }

    public static String getConverterKey(final String from, final String to) {
        return from + " to " + to;
    }

    public static String getConverterKey(final Class from, final Class to) {
        return getConverterKey(from.getName(), to.getName());
    }
}