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[DS-734] Cache columnNames in TableRowIterator, reduce database accesses in Item.update (getting metadatafields)

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git-svn-id: http://scm.dspace.org/svn/repo/dspace/trunk@5721 9c30dcfa-912a-0410-8fc2-9e0234be79fd
This commit is contained in:
Graham Triggs
2010-11-03 20:10:11 +00:00
parent e0da343294
commit 6d6c309371
3 changed files with 74 additions and 7 deletions
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24
dspace-api/src/main/java/org/dspace/content/Item.java
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@@ -48,6 +48,7 @@ import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.dspace.app.util.AuthorizeUtil;
import org.dspace.authorize.AuthorizeConfiguration;
@@ -1770,10 +1771,29 @@ public class Item extends DSpaceObject
}
}
private transient MetadataField[] allMetadataFields = null;
private MetadataField getMetadataField(DCValue dcv) throws SQLException, AuthorizeException
{
return MetadataField.findByElement(ourContext,
getMetadataSchemaID(dcv), dcv.element, dcv.qualifier);
if (allMetadataFields == null)
{
allMetadataFields = MetadataField.findAll(ourContext);
}
if (allMetadataFields != null)
{
int schemaID = getMetadataSchemaID(dcv);
for (MetadataField field : allMetadataFields)
{
if (field.getSchemaID() == schemaID &&
StringUtils.equals(field.getElement(), dcv.element) &&
StringUtils.equals(field.getQualifier(), dcv.qualifier))
{
return field;
}
}
}
return null;
}
private int getMetadataSchemaID(DCValue dcv) throws SQLException