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/**
* ============LICENSE_START==========================================
* org.onap.aai
* ===================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* Copyright © 2017-2018 Amdocs
* ===================================================================
* 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.
* ============LICENSE_END============================================
*/
package org.onap.aai.modelloader.entity.model;
import java.io.StringReader;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.onap.aai.modelloader.service.ModelLoaderMsgs;
import org.onap.aai.cl.api.Logger;
import org.onap.aai.cl.eelf.LoggerFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xml.sax.InputSource;
public class ModelParserFactory {
private static Logger logger = LoggerFactory.getInstance().getLogger(ModelParserFactory.class.getName());
private static String MODEL_ELEMENT = "model";
private static String NAMED_QUERY_ELEMENT = "named-query";
public static IModelParser createModelParser(byte[] artifactPayload, String artifactName) {
Document doc = null;
try {
String payload = new String(artifactPayload);
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder;
builder = factory.newDocumentBuilder();
InputSource is = new InputSource(new StringReader(payload));
doc = builder.parse(is);
} catch (Exception e) {
logger.error(ModelLoaderMsgs.ARTIFACT_PARSE_ERROR, "Unable to parse artifact " + artifactName);
return null;
}
if (doc.getDocumentElement().getNodeName().equalsIgnoreCase(NAMED_QUERY_ELEMENT)) {
return new NamedQueryArtifactParser();
}
if (!doc.getDocumentElement().getNodeName().equalsIgnoreCase(MODEL_ELEMENT)) {
logger.error(ModelLoaderMsgs.ARTIFACT_PARSE_ERROR, "Unable to parse artifact " + artifactName
+ ": Invalid root element: " + doc.getDocumentElement().getNodeName());
return null;
}
Element e = doc.getDocumentElement();
String ns = e.getAttribute("xmlns");
String[] parts = ns.split("/");
if (parts.length < 1) {
logger.error(ModelLoaderMsgs.ARTIFACT_PARSE_ERROR, "Unable to parse artifact " + artifactName
+ ": Could not parse namespace version");
return null;
}
String modelNamespaceVersion = parts[parts.length-1].trim().replace("v", "");
int version = Integer.parseInt(modelNamespaceVersion);
if (version > 8) {
return new ModelArtifactParser();
}
return new ModelV8ArtifactParser();
}
}
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