source: trunk/greenstone3-extensions/gs3build/src/org/greenstone/gsdl3/gs3build/doctypes/DocumentSQLWriter.java@ 12188

package org.greenstone.gsdl3.gs3build.doctypes;

import java.io.PrintWriter;

import java.sql.*;

import org.greenstone.gsdl3.gs3build.util.XMLTools;
import org.greenstone.gsdl3.gs3build.database.*;

public class DocumentSQLWriter
{
  public DocumentSQLWriter()
  {
  }

  public static boolean touchDocument(DocumentID docID, GS3SQLConnection connection, long touchTime, long modTime)
  { GS3SQLUpdate update = new GS3SQLUpdate("document");
    update.setWhere(new GS3SQLWhere(new GS3SQLWhereItem("DocID", "=", docID.toString())));
    update.addDate("IndexedDate", new java.sql.Timestamp(touchTime));
    update.addDate("ModifiedDate", new java.sql.Timestamp(modTime));
    try {
    Statement statement = connection.createStatement();
    statement.execute(update.toString());
    statement.close();
    } catch (SQLException e) {
    System.err.println("DocumentSQLWriter.touchDocument() Error: "+ e);
    return false;
    }
    System.out.println(update.toString());
    return true;
  }

  /**
   * Just write the document to the database, assuming that it is not already there
   */
  public boolean writeDocument(DocumentInterface document, GS3SQLConnection connection)
  {     
    // TODO: output document in METS format, with Greenstone-specific metadata
    // placed in a wrapper inside the descriptive metadata block

    // put the document into the database
    try {
      if (document.getID() != null)
      { //tag = XMLTools.addAttribute(tag, "OBJID", document.getID().toString());
    GS3SQLSelect select = new GS3SQLSelect("document");
    select.addField("*");
    select.setWhere(new GS3SQLWhere(new GS3SQLWhereItem("DocID", "=", document.getID().toString())));
    
    Statement statement = connection.createStatement();
    ResultSet results = statement.executeQuery(select.toString());
    if (!results.first()) { // empty result
      GS3SQLInsert insert = new GS3SQLInsert("document");
      insert.addValue("DocID", document.getID().toString());
      insert.addValue("DocType", document.getDocumentType());

      insert.addDate("AccessionDate", new java.sql.Timestamp(document.getAccessionDate()));
      insert.addDate("IndexedDate", new java.sql.Timestamp(document.getLastIndexedDate()));
      insert.addDate("ModifiedDate", new java.sql.Timestamp(document.getModifiedDatestamp()));

      statement.execute(insert.toString());
    }
    else {
      /* redundant code - not used... */
      //      GS3SQLUpdate update = new GS3SQLUpdate("document");
      //      update.setWhere(new GS3SQLWhere(new GS3SQLWhereItem("DocID", "=", document.getID().toString())));
      //      connection.execute(update.toString());
    }
    statement.close();
      }
    } catch (SQLException ex) {
    System.out.println("DocumentSQLWriter.writeDocument() Error:"+ex);
    }
    //    output.println(tag);
    
    // Write the structural metadata:
    //   if in "Create METS" mode:
    //     take all the documents as being in the one group, of the "physical"
    //     document; particular document plugins may extend this behaviour,
    //     which would suggest placing it in the AbstractDocument or similar
    //     class?!
    if (document.getDocumentMetadata() == null) {
      System.out.println("Null metadata document");
    }
    document.getDocumentMetadata().writeSQL(document, connection);

    document.getDocumentFiles().writeSQL(document, connection);

    document.getDocumentStructure().writeSQL(document, connection);

    // Write the body information
    // TODO: only output the document if there is some
    // content/formatting change between the original and
    // what greenstone actually does; if the original is
    // good, then place a marker saying "get the document
    // "from the original file"
    return true;
  }
}