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gcat/src/main/java/org/gcube/gcat/rest/Namespace.java

61 lines
1.8 KiB
Java

package org.gcube.gcat.rest;
import java.util.List;
import javax.ws.rs.GET;
import javax.ws.rs.InternalServerErrorException;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import org.gcube.datacatalogue.metadatadiscovery.DataCalogueMetadataFormatReader;
import org.gcube.datacatalogue.metadatadiscovery.bean.jaxb.NamespaceCategory;
import org.gcube.gcat.ResourceInitializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
/**
* @author Luca Frosini (ISTI - CNR)
*/
@Path(BaseREST.NAMESPACES)
public class Namespace extends BaseREST {
/**
* Returns the categories.
* @param context
* @return
* @throws Exception
*/
public static List<NamespaceCategory> getNamespaceCategories() throws Exception {
DataCalogueMetadataFormatReader reader = Profile.getDataCalogueMetadataFormatReader();
return reader.getListOfNamespaceCategories();
}
@GET
@Produces(ResourceInitializer.APPLICATION_JSON_CHARSET_UTF_8)
public String list() {
setCalledMethod("GET /" + BaseREST.NAMESPACES);
ObjectMapper mapper = new ObjectMapper();
ArrayNode arrayNode = mapper.createArrayNode();
try {
List<NamespaceCategory> namespaces = Namespace.getNamespaceCategories();
for(NamespaceCategory namespaceCategory : namespaces) {
ObjectNode namespace = mapper.createObjectNode();
namespace.put("id", namespaceCategory.getId());
namespace.put("title", namespaceCategory.getTitle());
namespace.put("name", namespaceCategory.getNamespaceCategoryQName());
namespace.put("description", namespaceCategory.getDescription());
arrayNode.add(namespace);
}
return mapper.writeValueAsString(arrayNode);
} catch(Exception e) {
throw new InternalServerErrorException(e.getMessage());
}
}
}