net.sibcolombia.sibsp.model.factory.ThesaurusHandlingRule.java Source code

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Here is the source code for net.sibcolombia.sibsp.model.factory.ThesaurusHandlingRule.java

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/*
 * Copyright 2009 GBIF. 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 net.sibcolombia.sibsp.model.factory;

import java.net.URI;

import com.google.inject.Inject;
import net.sibcolombia.sibsp.model.ExtensionProperty;
import net.sibcolombia.sibsp.model.Vocabulary;
import net.sibcolombia.sibsp.service.admin.VocabulariesManager;
import org.apache.commons.digester.Rule;
import org.apache.log4j.Logger;
import org.xml.sax.Attributes;

/**
 * This will call the root of the stack to find the url2thesaurus, and then set the appropriate thesaurus on the
 * extension. Namespaces are completely ignored. The "thesaurus" attribute is searched for and if found, the thesaurus
 * is set if found.
 */
public class ThesaurusHandlingRule extends Rule {

    public static final String ATTRIBUTE_THESAURUS = "thesaurus";
    private static final Logger LOG = Logger.getLogger(ThesaurusHandlingRule.class);
    private final VocabulariesManager vocabManager;

    @Inject
    public ThesaurusHandlingRule(VocabulariesManager vocabManager) {
        this.vocabManager = vocabManager;
    }

    @Override
    public void begin(String namespace, String name, Attributes attributes) throws Exception {

        for (int i = 0; i < attributes.getLength(); i++) {
            if (ThesaurusHandlingRule.ATTRIBUTE_THESAURUS.equals(attributes.getQName(i))) {
                Vocabulary tv = null;
                try {
                    URI vocabURIObject = new URI(attributes.getValue(i));
                    tv = vocabManager.get(vocabURIObject);
                } catch (Exception e) {
                    LOG.error("Vocabulary with location " + attributes.getValue(i) + " couldnt get hold of: "
                            + e.getMessage(), e);
                }

                if (tv == null) {
                    LOG.warn("No Vocabulary object exists for the URL[" + attributes.getValue(i)
                            + "] so cannot be set");
                } else {
                    Object extensionPropertyAsObject = getDigester().peek();
                    if (extensionPropertyAsObject instanceof ExtensionProperty) {
                        ExtensionProperty eProperty = (ExtensionProperty) extensionPropertyAsObject;
                        eProperty.setVocabulary(tv);
                        LOG.debug("Vocabulary with URI[" + tv.getUriString() + "] added to extension property");
                    }
                }

                break; // since we found the attribute
            }
        }
    }
}