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All Roads Lead to ROME. ROME is a set of Atom/RSS Java utilities that make it easy to work in Java with most syndication formats. Today it accepts all flavors of RSS (0.90, 0.91, 0.92, 0.93, 0.94, 1.0 and 2.0), Atom 0.3 and Atom 1.0 feeds. Rome includes a set of parsers and generators for the various flavors of feeds, as well as converters to convert from one format to another. The parsers can give you back Java objects that are either specific for the format you want to work with, or a generic normalized SyndFeed object that lets you work on with the data without bothering about the underlying format.

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/*
 * Copyright 2004 Sun Microsystems, 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.rometools.rome.io.impl;

import java.util.Locale;

import org.jdom2.Element;
import org.jdom2.Namespace;

import com.rometools.rome.feed.module.Module;
import com.rometools.rome.feed.module.SyModule;
import com.rometools.rome.feed.module.SyModuleImpl;
import com.rometools.rome.io.ModuleParser;

public class SyModuleParser implements ModuleParser {

    @Override
    public String getNamespaceUri() {
        return SyModule.URI;
    }

    private Namespace getDCNamespace() {
        return Namespace.getNamespace(SyModule.URI);
    }

    @Override
    public Module parse(final Element syndRoot, final Locale locale) {

        boolean foundSomething = false;

        final SyModule sm = new SyModuleImpl();

        final Element updatePeriod = syndRoot.getChild("updatePeriod", getDCNamespace());
        if (updatePeriod != null) {
            foundSomething = true;
            sm.setUpdatePeriod(updatePeriod.getText().trim());
        }

        final Element updateFrequency = syndRoot.getChild("updateFrequency", getDCNamespace());
        if (updateFrequency != null) {
            foundSomething = true;
            sm.setUpdateFrequency(Integer.parseInt(updateFrequency.getText().trim()));
        }

        final Element updateBase = syndRoot.getChild("updateBase", getDCNamespace());
        if (updateBase != null) {
            foundSomething = true;
            sm.setUpdateBase(DateParser.parseDate(updateBase.getText(), locale));
        }

        if (foundSomething) {
            return sm;
        } else {
            return null;
        }

    }

}