com.cloudera.nav.plugin.client.writer.registry.MPropertyRegistryFactory.java Source code

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Here is the source code for com.cloudera.nav.plugin.client.writer.registry.MPropertyRegistryFactory.java

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/*
 * Copyright (c) 2015 Cloudera, Inc.
 *
 * 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.cloudera.nav.plugin.client.writer.registry;

import com.cloudera.nav.plugin.model.annotations.MProperty;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;

import org.apache.commons.lang.StringUtils;

public class MPropertyRegistryFactory extends AbstractRegistryFactory<MPropertyEntry> {

    private static final String[] PREFIXES = { "get", "is" };

    @Override
    protected MPropertyEntry createEntry(Method method) {
        return new MPropertyEntry(getAttributeName(method), method);
    }

    @Override
    protected Class<? extends Annotation> getTypeClass() {
        return MProperty.class;
    }

    private String getAttributeName(Method method) {
        // return attribute from MProperty annotation if explicitly specified
        // otherwise create the attribute from the method name
        // with first letter lowercased
        String attributeName = method.getAnnotation(MProperty.class).attribute();
        if (StringUtils.isEmpty(attributeName)) {
            String methodName = method.getName();
            for (String prefix : PREFIXES) {
                if (methodName.startsWith(prefix) && methodName.length() > prefix.length()) {
                    methodName = String.valueOf(methodName.charAt(prefix.length())).toLowerCase()
                            + methodName.substring(prefix.length() + 1);
                    break;
                }
            }
            attributeName = methodName;
        }
        return attributeName;
    }
}