Package net.datacrow.core.db

Source Code of net.datacrow.core.db.InsertQuery

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package net.datacrow.core.db;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import javax.swing.ImageIcon;

import net.datacrow.core.DcRepository;
import net.datacrow.core.objects.DcField;
import net.datacrow.core.objects.DcMapping;
import net.datacrow.core.objects.DcObject;
import net.datacrow.core.objects.Picture;

import org.apache.log4j.Logger;

public class InsertQuery extends Query {
   
    private final static Logger logger = Logger.getLogger(InsertQuery.class.getName());
   
    private DcObject dco;
   
    public InsertQuery(DcObject dco) throws SQLException {
        super(dco.getModule().getIndex(), dco.getRequests());
        this.dco = dco;
        this.dco.setIDs();
    }
   
    @Override
    protected void clear() {
        super.clear();
        dco = null;
    }
   
    @SuppressWarnings("unchecked")
    @Override
    public List<DcObject> run() {
        boolean success = false;
       
        Collection<Object> values = new ArrayList<Object>();
        StringBuffer columns = new StringBuffer();

        // create non existing references
        createReferences(dco);
        
        Collection<DcMapping> references = new ArrayList<DcMapping>();
        Collection<Picture> pictures = new ArrayList<Picture>();

        Connection conn = null;
        Statement stmt = null;
        PreparedStatement ps = null;

        try {
            conn = DatabaseManager.getConnection();
            stmt = conn.createStatement();
       
            for (DcField field : dco.getFields()) {
                if (field.getValueType() == DcRepository.ValueTypes._PICTURE) {
                    Picture picture = (Picture) dco.getValue(field.getIndex());
                    ImageIcon image = picture != null ? (ImageIcon) picture.getValue(Picture._D_IMAGE) : null;
                    if (image != null) {
                        if (image.getIconHeight() == 0 || image.getIconWidth() == 0) {
                            logger.warn("Image " + dco.getID() + "_" + field.getDatabaseFieldName() + ".jpg" + " is invalid and will not be saved");
                        } else {
                            picture.setValue(Picture._A_OBJECTID, dco.getID());
                            picture.setValue(Picture._B_FIELD, field.getDatabaseFieldName());
                            picture.setValue(Picture._C_FILENAME, dco.getID() + "_" + field.getDatabaseFieldName() + ".jpg");
                            picture.setValue(Picture._E_HEIGHT, image.getIconHeight());
                            picture.setValue(Picture._F_WIDTH, image.getIconWidth());
                            picture.isEdited(true);
                            pictures.add(picture);
                        }
                    }
                } else if (field.getValueType() == DcRepository.ValueTypes._DCOBJECTCOLLECTION) {
                    Collection<DcMapping> c = (Collection<DcMapping>) dco.getValue(field.getIndex());
                    if (c != null) references.addAll(c);               
                   
                } else if (!field.isUiOnly()) {
                    if (columns.length() > 0)
                        columns.append(", ");
   
                    values.add(getQueryValue(dco, field.getIndex()));
                    columns.append(field.getDatabaseFieldName());
                }
            }
           
            String sqlPart = "";
            for (int i = 0; i < values.size(); i++)
                sqlPart += (sqlPart.length() > 0 ? ", ?" : "?");
           
            String sql = "INSERT INTO " + dco.getTableName() + " (" + columns + ") \r\n" + "VALUES (" + sqlPart + ");";
           
            ps = conn.prepareStatement(sql);
            setValues(ps, values);
            ps.execute();
           
            for (DcMapping mapping : references) {
                stmt.execute("INSERT INTO " + mapping.getTableName() +
                             " (" + mapping.getDatabaseFieldName(DcMapping._A_PARENT_ID) + ", " +
                             mapping.getDatabaseFieldName(DcMapping._B_REFERENCED_ID) +
                             ") VALUES ('" + dco.getID() + "', '" + mapping.getReferencedID() + "')");
            }
           
            for (Picture picture : pictures) {
                new InsertQuery(picture).run();
                saveImage(picture);
            }

            if (dco.getCurrentChildren() != null) {
                for (DcObject child : dco.getCurrentChildren()) {
                    child.setValue(child.getParentReferenceFieldIndex(), dco.getID());
                    new InsertQuery(child).run();
                }
            }
           
            success = true;
           
        } catch (SQLException e) {
            logger.error("An error occured while running the query", e);
        }
       
        try {
            if (ps != null) ps.close();
            if (stmt != null) stmt.close();
        } catch (SQLException e) {
            logger.error("Error while closing connection", e);
        }
       
        handleRequest(success);
        return null;
    }
   
    @Override
    protected void finalize() throws Throwable {
        clear();
        super.finalize();
    }
}
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