de.micromata.genome.util.runtime.config.LocalSettingsConfigUtils.java Source code

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Here is the source code for de.micromata.genome.util.runtime.config.LocalSettingsConfigUtils.java

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//
// Copyright (C) 2010-2016 Micromata GmbH
//
// 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 de.micromata.genome.util.runtime.config;

import java.lang.reflect.Field;
import java.util.List;

import org.apache.commons.lang3.StringUtils;

import de.micromata.genome.util.bean.FieldMatchers;
import de.micromata.genome.util.bean.PrivateBeanUtils;
import de.micromata.genome.util.runtime.LocalSettings;

/**
 * Utilities to manage configuration mappings.
 *
 * @author Roger Rene Kommer (r.kommer.extern@micromata.de)
 */
public class LocalSettingsConfigUtils {

    /**
     * Inits the from local settings.
     *
     * @param bean the bean
     * @param localSettings the local settings
     */
    public static void initFromLocalSettings(LocalSettingsConfigModel bean, LocalSettings localSettings) {
        List<Field> fields = PrivateBeanUtils.findAllFields(bean.getClass(),
                FieldMatchers.hasAnnotation(ALocalSettingsPath.class));
        for (Field field : fields) {
            ALocalSettingsPath lsp = field.getAnnotation(ALocalSettingsPath.class);
            String key = lsp.key();
            if ("<fieldName>".equals(key) == true) {
                key = field.getName();
            }
            PrivateBeanUtils.writeField(bean, field, localSettings.get(bean.buildKey(key), lsp.defaultValue()));
        }
    }

    /**
     * To properties.
     *
     * @param bean the bean
     * @param writer the writer
     * @return the local settings writer
     */
    public static LocalSettingsWriter toProperties(LocalSettingsConfigModel bean, LocalSettingsWriter writer) {
        String comment = bean.getSectionComment();
        LocalSettingsWriter lw = writer.newSection(comment);
        toPropertiesInSection(bean, lw);
        return lw;
    }

    /**
     * To properties in section.
     *
     * @param bean the bean
     * @param writer the writer
     */
    public static void toPropertiesInSection(LocalSettingsConfigModel bean, LocalSettingsWriter writer) {
        List<Field> fields = PrivateBeanUtils.findAllFields(bean.getClass(),
                FieldMatchers.hasAnnotation(ALocalSettingsPath.class));
        for (Field field : fields) {
            ALocalSettingsPath lsp = field.getAnnotation(ALocalSettingsPath.class);
            String key = lsp.key();
            if ("<fieldName>".equals(key) == true) {
                key = field.getName();
            }
            String val = (String) PrivateBeanUtils.readField(bean, field);
            writer.put(bean.buildKey(key), val, lsp.comment());
        }
    }

    /**
     * Join.
     *
     * @param prefix the prefix
     * @param key the key
     * @return the string
     */
    public static String join(String prefix, String key) {
        if (StringUtils.isBlank(prefix) == true) {
            return key;
        }
        return prefix + "." + key;
    }

}