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Merge pull request IQSS#4302 from IQSS/3700-export-schema.org
implement export of schema.org JSON-LD IQSS#3700
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86 changes: 86 additions & 0 deletions
86
src/main/java/edu/harvard/iq/dataverse/export/SchemaDotOrgExporter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| package edu.harvard.iq.dataverse.export; | ||
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| import com.google.auto.service.AutoService; | ||
| import edu.harvard.iq.dataverse.DatasetVersion; | ||
| import edu.harvard.iq.dataverse.export.spi.Exporter; | ||
| import edu.harvard.iq.dataverse.util.BundleUtil; | ||
| import java.io.IOException; | ||
| import java.io.OutputStream; | ||
| import java.io.StringReader; | ||
| import java.util.logging.Logger; | ||
| import javax.json.Json; | ||
| import javax.json.JsonObject; | ||
| import javax.json.JsonReader; | ||
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| @AutoService(Exporter.class) | ||
| public class SchemaDotOrgExporter implements Exporter { | ||
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| private static final Logger logger = Logger.getLogger(SchemaDotOrgExporter.class.getCanonicalName()); | ||
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| public static final String NAME = "schema.org"; | ||
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| @Override | ||
| public void exportDataset(DatasetVersion version, JsonObject json, OutputStream outputStream) throws ExportException { | ||
| String jsonLdAsString = version.getJsonLd(); | ||
| StringReader stringReader = new StringReader(jsonLdAsString); | ||
| JsonReader jsonReader = Json.createReader(stringReader); | ||
| JsonObject jsonLdJsonObject = jsonReader.readObject(); | ||
| try { | ||
| outputStream.write(jsonLdJsonObject.toString().getBytes("UTF8")); | ||
| } catch (IOException ex) { | ||
| logger.info("IOException calling outputStream.write: " + ex); | ||
| } | ||
| try { | ||
| outputStream.flush(); | ||
| } catch (IOException ex) { | ||
| logger.info("IOException calling outputStream.flush: " + ex); | ||
| } | ||
| } | ||
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| @Override | ||
| public String getProviderName() { | ||
| return NAME; | ||
| } | ||
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| @Override | ||
| public String getDisplayName() { | ||
| return BundleUtil.getStringFromBundle("dataset.exportBtn.itemLabel.schemaDotOrg"); | ||
| } | ||
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| @Override | ||
| public Boolean isXMLFormat() { | ||
| return false; | ||
| } | ||
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| @Override | ||
| public Boolean isHarvestable() { | ||
| // Defer harvesting because the current effort was estimated as a "2": https://github.com/IQSS/dataverse/issues/3700 | ||
| return false; | ||
| } | ||
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| @Override | ||
| public Boolean isAvailableToUsers() { | ||
| return true; | ||
| } | ||
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| @Override | ||
| public String getXMLNameSpace() throws ExportException { | ||
| throw new ExportException(SchemaDotOrgExporter.class.getSimpleName() + ": not an XML format."); | ||
| } | ||
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| @Override | ||
| public String getXMLSchemaLocation() throws ExportException { | ||
| throw new ExportException(SchemaDotOrgExporter.class.getSimpleName() + ": not an XML format."); | ||
| } | ||
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| @Override | ||
| public String getXMLSchemaVersion() throws ExportException { | ||
| throw new ExportException(SchemaDotOrgExporter.class.getSimpleName() + ": not an XML format."); | ||
| } | ||
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| @Override | ||
| public void setParam(String name, Object value) { | ||
| // this exporter doesn't need/doesn't currently take any parameters | ||
| } | ||
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| } |
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