basebookpeer.java

Torque示例

package com.becom.om;

import java.math.BigDecimal;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

import org.apache.torque.NoRowsException;
import org.apache.torque.TooManyRowsException;
import org.apache.torque.Torque;
import org.apache.torque.TorqueException;
import org.apache.torque.map.MapBuilder;
import org.apache.torque.map.TableMap;
import org.apache.torque.om.DateKey;
import org.apache.torque.om.NumberKey;
import org.apache.torque.om.StringKey;
import org.apache.torque.om.ObjectKey;
import org.apache.torque.om.SimpleKey;
import org.apache.torque.util.BasePeer;
import org.apache.torque.util.Criteria;

import com.workingdogs.village.DataSetException;
import com.workingdogs.village.QueryDataSet;
import com.workingdogs.village.Record;

// Local classes
import com.becom.om.map.*;


  
  
/**
 * This class was autogenerated by Torque on:
 *
 * [Tue Apr 20 13:21:09 CST 2004]
 *
 */
public abstract class BaseBookPeer
    extends BasePeer
{

    /** the default database name for this class */
    public static final String DATABASE_NAME = "bookstore";

     /** the table name for this class */
    public static final String TABLE_NAME = "book";

    /**
     * @return the map builder for this peer
     * @throws TorqueException Any exceptions caught during processing will be
     *         rethrown wrapped into a TorqueException.
     */
    public static MapBuilder getMapBuilder()
        throws TorqueException
    {
        return getMapBuilder(BookMapBuilder.CLASS_NAME);
    }

      /** the column name for the BOOK_ID field */
    public static final String BOOK_ID;
      /** the column name for the TITLE field */
    public static final String TITLE;
      /** the column name for the ISBN field */
    public static final String ISBN;
      /** the column name for the PUBLISHER_ID field */
    public static final String PUBLISHER_ID;
      /** the column name for the AUTHOR_ID field */
    public static final String AUTHOR_ID;
  
    static
    {
          BOOK_ID = "book.BOOK_ID";
          TITLE = "book.TITLE";
          ISBN = "book.ISBN";
          PUBLISHER_ID = "book.PUBLISHER_ID";
          AUTHOR_ID = "book.AUTHOR_ID";
          if (Torque.isInit())
        {
            try
            {
                getMapBuilder(BookMapBuilder.CLASS_NAME);
            }
            catch (Exception e)
            {
                log.error("Could not initialize Peer", e);
            }
        }
        else
        {
            Torque.registerMapBuilder(BookMapBuilder.CLASS_NAME);
        }
    }
 
    /** number of columns for this peer */
    public static final int numColumns =  5;

    /** A class that can be returned by this peer. */
    protected static final String CLASSNAME_DEFAULT =
        "com.becom.om.Book";

    /** A class that can be returned by this peer. */
    protected static final Class CLASS_DEFAULT = initClass(CLASSNAME_DEFAULT);

    /**
     * Class object initialization method.
     *
     * @param className name of the class to initialize
     * @return the initialized class
     */
    private static Class initClass(String className)
    {
        Class c = null;
        try
        {
            c = Class.forName(className);
        }
        catch (Throwable t)
        {
            log.error("A FATAL ERROR has occurred which should not "
                + "have happened under any circumstance.  Please notify "
                + "the Torque developers <[e-mail]> "
                + "and give as many details as possible (including the error "
                + "stack trace).", t);

            // Error objects should always be propogated.
            if (t instanceof Error)
            {
                throw (Error) t.fillInStackTrace();
            }
        }
        return c;
    }

    /**
     * Get the list of objects for a ResultSet.  Please not that your
     * resultset MUST return columns in the right order.  You can use
     * getFieldNames() in BaseObject to get the correct sequence.
     *
     * @param results the ResultSet
     * @return the list of objects
     * @throws TorqueException Any exceptions caught during processing will be
     *         rethrown wrapped into a TorqueException.
     */
    public static List resultSet2Objects(java.sql.ResultSet results)
            throws TorqueException
    {
        try
        {
            QueryDataSet qds = null;
            List rows = null;
            try
            {
                qds = new QueryDataSet(results);
                rows = getSelectResults(qds);
            }
            finally
            {
                if (qds != null)
                {
                    qds.close();
                }
            }

            return populateObjects(rows);
        }
        catch (SQLException e)
        {
            throw new TorqueException(e);
        }
        catch (DataSetException e)
        {
            throw new TorqueException(e);
        }
    }


  
    /**
     * Method to do inserts.
     *
     * @param criteria object used to create the INSERT statement.
     * @throws TorqueException Any exceptions caught during processing will be
     *         rethrown wrapped into a TorqueException.
     */
    public static ObjectKey doInsert(Criteria criteria)
        throws TorqueException
    {
        return BaseBookPeer
            .doInsert(criteria, (Connection) null);
    }

    /**
     * Method to do inserts.  This method is to be used during a transaction,
     * otherwise use the doInsert(Criteria) method.  It will take care of
     * the connection details internally.
     *
     * @param criteria object used to create the INSERT statement.
     * @param con the connection to use
     * @throws TorqueException Any exceptions caught during processing will be
     *         rethrown wrapped into a TorqueException.
     */
    public static ObjectKey doInsert(Criteria criteria, Connection con)
        throws TorqueException
    {
                                
        // Set the correct dbName if it has not been overridden
        // criteria.getDbName will return the same object if not set to
        // another value so == check is okay and faster
        if (criteria.getDbName() == Torque.getDefaultDB())
        {
            criteria.setDbName(DATABASE_NAME);
        }
        if (con == null)
        {
            return BasePeer.doInsert(criteria);
        }
        else
        {
            return BasePeer.doInsert(criteria, con);
        }
    }

    /**
     * Add all the columns needed to create a new object.
     *
     * @param criteria object containing the columns to add.
     * @throws TorqueException Any exceptions caught during processing will be
     *         rethrown wrapped into a TorqueException.
     */
    public static void addSelectColumns(Criteria criteria)
            throws TorqueException
    {
          criteria.addSelectColumn(BOOK_ID);
          criteria.addSelectColumn(TITLE);
          criteria.addSelectColumn(ISBN);
          criteria.addSelectColumn(PUBLISHER_ID);
          criteria.addSelectColumn(AUTHOR_ID);
      }

    /**
     * Create a new object of type cls from a resultset row starting
     * from a specified offset.  This is done so that you can select
     * other rows than just those needed for this object.  You may
     * for example want to create two objects from the same row.
     *
     * @throws TorqueException Any exceptions caught during processing will be
     *         rethrown wrapped into a TorqueException.
     */
    public static Book row2Object(Record row,
                                             int offset,
                                             Class cls)
        throws TorqueException
    {
        try
        {
            Book obj = (Book) cls.newInstance();
            BookPeer.populateObject(row, offset, obj);
                  obj.setModified(false);
              obj.setNew(false);

            return obj;
        }
        catch (InstantiationException e)
        {
            throw new TorqueException(e);
        }
        catch (IllegalAccessException e)
        {
            throw new TorqueException(e);
        }
    }

    /**
     * Populates an object from a resultset row starting
     * from a specified offset.  This is done so that you can select
     * other rows than just those needed for this object.  You may
     * for example want to create two objects from the same row.
     *
     * @throws TorqueException Any exceptions caught during processing will be
     *         rethrown wrapped into a TorqueException.
     */
    public static void populateObject(Record row,
                                      int offset,
                                      Book obj)
        throws TorqueException
    {
        try
        {
                obj.setBookId(row.getValue(offset + 0).asInt());
                  obj.setTitle(row.getValue(offset + 1).asString());
                  obj.setISBN(row.getValue(offset + 2).asString());
                  obj.setPublisherId(row.getValue(offset + 3).asInt());
                  obj.setAuthorId(row.getValue(offset + 4).asInt());
              }
        catch (DataSetException e)
        {
            throw new TorqueException(e);
        }
    }

    /**
     * Method to do selects.
     *
     * @param criteria object used to create the SELECT statement.
     * @return List of selected Objects
     * @throws TorqueException Any exceptions caught during processing will be
     *         rethrown wrapped into a TorqueException.
     */
    public static List doSelect(Criteria criteria) throws TorqueException
    {
        return populateObjects(doSelectVillageRecords(criteria));