83 lines
2.9 KiB
Java
83 lines
2.9 KiB
Java
package org.gcube.datacatalogue.metadatadiscovery;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import org.gcube.common.scope.api.ScopeProvider;
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import org.gcube.common.scope.impl.ScopeBean;
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import org.gcube.datacatalogue.metadatadiscovery.bean.MetadataType;
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import org.gcube.datacatalogue.metadatadiscovery.bean.jaxb.MetadataFormat;
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import org.gcube.datacatalogue.metadatadiscovery.reader.MedataFormatDiscovery;
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import org.gcube.datacatalogue.metadatadiscovery.reader.MedataFormatReader;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* The Class DataCalogueMetadataReader.
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*
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* @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
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* Jun 8, 2016
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*/
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public class DataCalogueMetadataFormatReader implements DataCatalogueMetadataDiscovery{
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private MedataFormatDiscovery medataFormatDiscovery;
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private final ScopeBean scope;
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private Map<String, MetadataFormat> hash = new HashMap<String, MetadataFormat>();
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private static Logger logger = LoggerFactory.getLogger(DataCalogueMetadataFormatReader.class);
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/**
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* Instantiates a new data calogue metadata format reader.
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*
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* @throws Exception the exception
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*/
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public DataCalogueMetadataFormatReader() throws Exception {
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String scopeString = ScopeProvider.instance.get();
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logger.debug("DataCalogueMetadataFormatReader read scope "+scopeString +" from ScopeProvider");
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if(scopeString==null || scopeString.isEmpty())
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throw new Exception("Please set a valid scope into ScopeProvider");
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scope = new ScopeBean(scopeString);
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medataFormatDiscovery = new MedataFormatDiscovery(scope);
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logger.info("MedataFormatDiscovery has retrieved: "+medataFormatDiscovery.getMetadataTypes().size() +" metadata type/s");
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logger.debug("filling cache for MedataFormat");
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for (MetadataType mT : medataFormatDiscovery.getMetadataTypes()) {
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MedataFormatReader reader = new MedataFormatReader(scope, mT.getId());
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hash.put(mT.getId(), reader.getMetadataFormat());
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logger.debug("MetadataType id: "+mT.getId() +" cached as: "+reader.getMetadataFormat());
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}
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}
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/* (non-Javadoc)
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* @see org.gcube.datacatalogue.metadatadiscovery.DataCatalogueMetadataDiscovery#getListOfMetadataTypes()
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*/
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@Override
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public List<MetadataType> getListOfMetadataTypes() throws Exception {
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return medataFormatDiscovery.getMetadataTypes();
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}
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/* (non-Javadoc)
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* @see org.gcube.datacatalogue.metadatadiscovery.DataCatalogueMetadataDiscovery#getMetadataFormatForMetadataType(org.gcube.datacatalogue.metadatadiscovery.bean.MetadataType)
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*/
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@Override
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public MetadataFormat getMetadataFormatForMetadataType(MetadataType type) throws Exception {
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if(type==null)
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throw new Exception("MetadataType is null");
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MetadataFormat format = hash.get(type.getId());
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if(format!=null)
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return format;
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MedataFormatReader reader = new MedataFormatReader(scope, type.getId());
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return reader.getMetadataFormat();
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}
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}
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