org.n52.svalbard.decode.SwesExtensionDecoderv20 Maven / Gradle / Ivy

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/*
 * Copyright 2015-2020 52°North Initiative for Geospatial Open Source
 * Software 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 org.n52.svalbard.decode;

import java.util.Collections;
import java.util.Set;

import org.apache.xmlbeans.XmlObject;
import org.apache.xmlbeans.impl.values.XmlAnyTypeImpl;
import org.n52.shetland.ogc.ows.extension.Extension;
import org.n52.shetland.ogc.swe.SweAbstractDataComponent;
import org.n52.shetland.ogc.swes.SwesConstants;
import org.n52.shetland.ogc.swes.SwesExtension;
import org.n52.shetland.util.CollectionHelper;
import org.n52.shetland.w3c.W3CConstants;
import org.n52.svalbard.decode.exception.DecodingException;
import org.n52.svalbard.decode.exception.UnsupportedDecoderInputException;
import org.n52.svalbard.decode.exception.UnsupportedDecoderXmlInputException;
import org.n52.svalbard.util.CodingHelper;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Node;

import com.google.common.base.Joiner;

/**
 * @author Eike Hinderk
 *         Jürrens
 *
 * @since 1.0.0
 */
public class SwesExtensionDecoderv20 extends AbstractXmlDecoder> {

    private static final Logger LOGGER = LoggerFactory.getLogger(SwesDecoderv20.class);

    private static final Set DECODER_KEYS =
            CollectionHelper.union(CodingHelper.decoderKeysForElements(W3CConstants.NS_XS, XmlAnyTypeImpl.class),
                    CodingHelper.decoderKeysForElements(SwesConstants.NS_SWES_20, XmlAnyTypeImpl.class));

    public SwesExtensionDecoderv20() {
        LOGGER.debug("Decoder for the following keys initialized successfully: {}!",
                Joiner.on(", ").join(DECODER_KEYS));
    }

    @Override
    public Set getKeys() {
        return Collections.unmodifiableSet(DECODER_KEYS);
    }

    @Override
    public Extension decode(XmlObject xmlObject) throws DecodingException, UnsupportedDecoderInputException {

        if (isSwesExtension(xmlObject)) {
            XmlObject[] children = xmlObject.selectPath("./*");
            if (children.length == 1) {
                Object xmlObj = decodeXmlElement(children[0]);
                if (xmlObj instanceof Extension) {
                    return (Extension) xmlObj;
                } else {
                    final SwesExtension