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added html splash page generation to dipsLoader
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,192 @@ | ||
| /** | ||
| * | ||
| */ | ||
| package de.nrw.hbz.edm.impl; | ||
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|
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| import java.io.BufferedInputStream; | ||
| import java.io.BufferedOutputStream; | ||
| import java.io.ByteArrayInputStream; | ||
| import java.io.File; | ||
| import java.io.FileInputStream; | ||
| import java.io.FileNotFoundException; | ||
| import java.io.FileOutputStream; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
|
|
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| import org.apache.logging.log4j.LogManager; | ||
| import org.apache.logging.log4j.Logger; | ||
|
|
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| import com.fasterxml.jackson.core.JsonProcessingException; | ||
| import com.fasterxml.jackson.core.exc.StreamReadException; | ||
| import com.fasterxml.jackson.databind.DatabindException; | ||
| import com.fasterxml.jackson.dataformat.xml.XmlMapper; | ||
|
|
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| import de.nrw.hbz.edm.model.Rdf; | ||
| import de.nrw.hbz.edm.model.deserialize.DeserializeRdf; | ||
| import de.nrw.hbz.edm.model.serialize.SerializeRdf; | ||
|
|
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| /** | ||
| * A class to generate appropriate Pojo-representations from serialized EDM (Europeana Data Model) metadata | ||
| * Makes use of the jackson-Framework | ||
| */ | ||
| public class EdmProvider { | ||
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|
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| final static Logger logger = LogManager.getLogger(EdmProvider.class); | ||
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| private Rdf rdf = new DeserializeRdf(); | ||
| private static InputStream xmlIs = null; | ||
|
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| /** | ||
| * Constructor takes serialized EDM as File Object | ||
| * @param file | ||
| */ | ||
| public EdmProvider(File file) { | ||
| xmlIs = loadXml(file); | ||
| } | ||
|
|
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| /** | ||
| * Constructor takes serialized EDM as String | ||
| * @param rdfString | ||
| */ | ||
| public EdmProvider(String rdfString) { | ||
| xmlIs = loadXmlString(rdfString); | ||
| } | ||
|
|
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| /** | ||
| * Constructor takes serialized EDM as InputStream | ||
| * @param rdfIs | ||
| */ | ||
| public EdmProvider(InputStream rdfIs) { | ||
| //importFile = new File(fileName); | ||
| xmlIs = rdfIs; | ||
| } | ||
|
|
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| /** | ||
| * loads File content into InputStream | ||
| * @return InputStream representing EDM metadata | ||
| */ | ||
| private static InputStream loadXml(File file) { | ||
| BufferedInputStream bis = null; | ||
| try { | ||
| FileInputStream fis = new FileInputStream(file); | ||
| bis = new BufferedInputStream(fis); | ||
| } catch (FileNotFoundException e) { | ||
| logger.error(e.getMessage()); | ||
| } | ||
|
|
||
| return bis; | ||
| } | ||
|
|
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| /** | ||
| * @param rdf EDM metadata as String representation | ||
| * @return InputStream representing EDM metadata | ||
| */ | ||
| private static InputStream loadXmlString(String rdfString) { | ||
|
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| BufferedInputStream bis = null; | ||
| ByteArrayInputStream baif = new ByteArrayInputStream(rdfString.getBytes()); | ||
| bis = new BufferedInputStream(baif); | ||
|
|
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| return bis; | ||
| } | ||
|
|
||
| /** | ||
| * method takes serialized EDM as InputStream | ||
| * @param is InputStream to be used | ||
| * @return EDM as Pojos according to jackson-Framework | ||
| */ | ||
| public static Rdf deserialize(InputStream is) { | ||
| DeserializeRdf rdf = null; | ||
| xmlIs = is; | ||
| XmlMapper xmlMapper = new XmlMapper(); | ||
| try { | ||
| rdf = xmlMapper.readValue(xmlIs, DeserializeRdf.class); | ||
|
|
||
| } catch (StreamReadException e) { | ||
| logger.error(e.getMessage()); | ||
| } catch (DatabindException e) { | ||
| logger.error(e.getMessage()); | ||
| } catch (IOException e) { | ||
| logger.error(e.getMessage()); | ||
| } | ||
|
|
||
|
|
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| return rdf; | ||
| } | ||
|
|
||
| /** | ||
| * method takes serialized EDM as File object | ||
| * @param file File to be used | ||
| * @return EDM as Pojos according to jackson-Framework | ||
| */ | ||
| public static Rdf deserialize(File file) { | ||
| DeserializeRdf rdf = null; | ||
| xmlIs = loadXml(file); | ||
| XmlMapper xmlMapper = new XmlMapper(); | ||
| try { | ||
| rdf = xmlMapper.readValue(xmlIs, DeserializeRdf.class); | ||
|
|
||
| } catch (StreamReadException e) { | ||
| logger.error(e.getMessage()); | ||
| } catch (DatabindException e) { | ||
| logger.error(e.getMessage()); | ||
| } catch (IOException e) { | ||
| logger.error(e.getMessage()); | ||
| } | ||
|
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||
|
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| return rdf; | ||
| } | ||
|
|
||
| /** | ||
| * method takes serialized EDM as String | ||
| * @param edmString the String used to deserialize | ||
| * @return EDM as Pojos according to jackson-Framework | ||
| */ | ||
| public static Rdf deserialize(String edmString) { | ||
| DeserializeRdf rdf = null; | ||
| xmlIs = loadXmlString(edmString); | ||
| XmlMapper xmlMapper = new XmlMapper(); | ||
| try { | ||
| rdf = xmlMapper.readValue(xmlIs, DeserializeRdf.class); | ||
|
|
||
| } catch (StreamReadException e) { | ||
| logger.error(e.getMessage()); | ||
| } catch (DatabindException e) { | ||
| logger.error(e.getMessage()); | ||
| } catch (IOException e) { | ||
| logger.error(e.getMessage()); | ||
| } | ||
| return rdf; | ||
| } | ||
|
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| public static String serialize(Rdf edm) { | ||
| XmlMapper xmlMapper = new XmlMapper(); | ||
| String xml = null; | ||
| try { | ||
| xmlMapper.writerFor(SerializeRdf.class); | ||
| xml = xmlMapper.writerWithDefaultPrettyPrinter().writeValueAsString(edm); | ||
|
|
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| } catch (JsonProcessingException e) { | ||
| logger.error("Failed to serialize EDM Object: " + edm.toString()); | ||
| } | ||
| return xml; | ||
| } | ||
|
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| /** | ||
| * @return the oaiPmh | ||
| */ | ||
| public Rdf getEdm() { | ||
| return rdf; | ||
| } | ||
|
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||
|
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| /** | ||
| * @param oaiPmh the oaiPmh to set | ||
| */ | ||
| public void setEdm(Rdf rdf) { | ||
| this.rdf = rdf; | ||
| } | ||
|
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|
|
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| } |
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