de.boksa.rt.rest.response.parser.processor.FieldProcessorRegistry.java Source code

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Here is the source code for de.boksa.rt.rest.response.parser.processor.FieldProcessorRegistry.java

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/*
 * Copyright (C) 2012  Benjamin Boksa (http://www.boksa.de/)
 * 
 *   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.boksa.rt.rest.response.parser.processor;

import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;

import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.lang.StringUtils;

import de.boksa.rt.model.RTCustomField;
import de.boksa.rt.model.RTTicket;

public class FieldProcessorRegistry {

    private static final FieldProcessorRegistry SINGLETON = new FieldProcessorRegistry();

    private FieldProcessorRegistry() {
        this.typeFieldProcessors = new HashMap<Class<?>, FieldProcessor>();

        this.typeFieldProcessors.put(Long.class, LongFieldProcessor.getInstance());

        this.standardFieldProcessors = new HashMap<String, FieldProcessor>();
        this.customFieldProcessors = new HashMap<String, FieldProcessor>();
    }

    public static FieldProcessorRegistry getInstance() {
        return SINGLETON;
    }

    private Map<Class<?>, FieldProcessor> typeFieldProcessors;
    private Map<String, FieldProcessor> standardFieldProcessors;
    private Map<String, FieldProcessor> customFieldProcessors;

    public FieldProcessor getTicketFieldProcessor(RTTicket ticket, String ticketFieldName) {
        FieldProcessor fieldProcessor = null;

        Matcher m = RTCustomField.PATTERN_CUSTOM_FIELD_NAME.matcher(ticketFieldName);

        if (m.matches()) {
            fieldProcessor = customFieldProcessors.get(m.group(1));
            if (fieldProcessor == null) {
                fieldProcessor = DefaultCustomFieldProcessor.getInstance();
            }
        } else {
            fieldProcessor = standardFieldProcessors.get(ticketFieldName);
            if (fieldProcessor == null) {
                try {
                    fieldProcessor = typeFieldProcessors
                            .get(PropertyUtils.getPropertyType(ticket, StringUtils.uncapitalize(ticketFieldName)));
                } catch (Exception ex) {
                    ex.printStackTrace();
                }
            }
        }

        return (fieldProcessor != null) ? fieldProcessor : DefaultFieldProcessor.getInstance();
    }

}