basebook.java

Torque示例

package com.becom.om;


import java.math.BigDecimal;
import java.sql.Connection;
import java.util.ArrayList;
import java.util.Date;
import java.util.Collections;
import java.util.List;

import org.apache.commons.lang.ObjectUtils;
import org.apache.torque.TorqueException;
import org.apache.torque.om.BaseObject;
import org.apache.torque.om.ComboKey;
import org.apache.torque.om.DateKey;
import org.apache.torque.om.NumberKey;
import org.apache.torque.om.ObjectKey;
import org.apache.torque.om.SimpleKey;
import org.apache.torque.om.StringKey;
import org.apache.torque.om.Persistent;
import org.apache.torque.util.Criteria;
import org.apache.torque.util.Transaction;

  
    
  
/**
 * This class was autogenerated by Torque on:
 *
 * [Tue Apr 20 13:21:09 CST 2004]
 *
 * You should not use this class directly.  It should not even be
 * extended all references should be to Book
 */
public abstract class BaseBook extends BaseObject
{
    /** The Peer class */
    private static final BookPeer peer =
        new BookPeer();

        
    /** The value for the bookId field */
    private int bookId;
      
    /** The value for the title field */
    private String title;
      
    /** The value for the iSBN field */
    private String iSBN;
      
    /** The value for the publisherId field */
    private int publisherId;
      
    /** The value for the authorId field */
    private int authorId;
  
    
    /**
     * Get the BookId
     *
     * @return int
     */
    public int getBookId()
    {
        return bookId;
    }

                        
    /**
     * Set the value of BookId
     *
     * @param v new value
     */
    public void setBookId(int v) 
    {
    
                  if (this.bookId != v)
              {
            this.bookId = v;
            setModified(true);
        }
    
          
              }
  
    /**
     * Get the Title
     *
     * @return String
     */
    public String getTitle()
    {
        return title;
    }

                        
    /**
     * Set the value of Title
     *
     * @param v new value
     */
    public void setTitle(String v) 
    {
    
                  if (!ObjectUtils.equals(this.title, v))
              {
            this.title = v;
            setModified(true);
        }
    
          
              }
  
    /**
     * Get the ISBN
     *
     * @return String
     */
    public String getISBN()
    {
        return iSBN;
    }

                        
    /**
     * Set the value of ISBN
     *
     * @param v new value
     */
    public void setISBN(String v) 
    {
    
                  if (!ObjectUtils.equals(this.iSBN, v))
              {
            this.iSBN = v;
            setModified(true);
        }
    
          
              }
  
    /**
     * Get the PublisherId
     *
     * @return int
     */
    public int getPublisherId()
    {
        return publisherId;
    }

                              
    /**
     * Set the value of PublisherId
     *
     * @param v new value
     */
    public void setPublisherId(int v) throws TorqueException
    {
    
                  if (this.publisherId != v)
              {
            this.publisherId = v;
            setModified(true);
        }
    
                          
                if (aPublisher != null && !(aPublisher.getPublisherId() == v))
                {
            aPublisher = null;
        }
      
              }
  
    /**
     * Get the AuthorId
     *
     * @return int
     */
    public int getAuthorId()
    {
        return authorId;
    }

                              
    /**
     * Set the value of AuthorId
     *
     * @param v new value
     */
    public void setAuthorId(int v) throws TorqueException
    {
    
                  if (this.authorId != v)
              {
            this.authorId = v;
            setModified(true);
        }
    
                          
                if (aAuthor != null && !(aAuthor.getAuthorId() == v))
                {
            aAuthor = null;
        }
      
              }
  
      
    
                  
    
        private Publisher aPublisher;

    /**
     * Declares an association between this object and a Publisher object
     *
     * @param v Publisher
     * @throws TorqueException
     */
    public void setPublisher(Publisher v) throws TorqueException
    {
            if (v == null)
        {
                    setPublisherId(0);
                  }
        else
        {
            setPublisherId(v.getPublisherId());
        }
                aPublisher = v;
    }

                                            
    /**
     * Get the associated Publisher object
     *
     * @return the associated Publisher object
     * @throws TorqueException
     */
    public Publisher getPublisher() throws TorqueException
    {
        if (aPublisher == null && (this.publisherId > 0))
        {
                          aPublisher = PublisherPeer.retrieveByPK(SimpleKey.keyFor(this.publisherId));
              
            /* The following can be used instead of the line above to
               guarantee the related object contains a reference
               to this object, but this level of coupling
               may be undesirable in many circumstances.
               As it can lead to a db query with many results that may
               never be used.
               Publisher obj = PublisherPeer.retrieveByPK(this.publisherId);
               obj.addBooks(this);
            */
        }
        return aPublisher;
    }

    /**
     * Provides convenient way to set a relationship based on a
     * ObjectKey.  e.g.
     * <code>bar.setFooKey(foo.getPrimaryKey())</code>
     *
           */
    public void setPublisherKey(ObjectKey key) throws TorqueException
    {
      
                        setPublisherId(((NumberKey) key).intValue());
                  }
    
    
                  
    
        private Author aAuthor;

    /**
     * Declares an association between this object and a Author object
     *
     * @param v Author
     * @throws TorqueException
     */
    public void setAuthor(Author v) throws TorqueException
    {
            if (v == null)
        {
                    setAuthorId(0);
                  }
        else
        {
            setAuthorId(v.getAuthorId());
        }
                aAuthor = v;
    }

                                            
    /**
     * Get the associated Author object
     *
     * @return the associated Author object
     * @throws TorqueException
     */
    public Author getAuthor() throws TorqueException
    {
        if (aAuthor == null && (this.authorId > 0))
        {
                          aAuthor = AuthorPeer.retrieveByPK(SimpleKey.keyFor(this.authorId));
              
            /* The following can be used instead of the line above to
               guarantee the related object contains a reference
               to this object, but this level of coupling
               may be undesirable in many circumstances.
               As it can lead to a db query with many results that may
               never be used.
               Author obj = AuthorPeer.retrieveByPK(this.authorId);
               obj.addBooks(this);
            */
        }
        return aAuthor;
    }

    /**
     * Provides convenient way to set a relationship based on a
     * ObjectKey.  e.g.
     * <code>bar.setFooKey(foo.getPrimaryKey())</code>
     *
           */
    public void setAuthorKey(ObjectKey key) throws TorqueException
    {
      
                        setAuthorId(((NumberKey) key).intValue());
                  }
       
                
    private static List fieldNames = null;

    /**
     * Generate a list of field names.
     *
     * @return a list of field names
     */
    public static synchronized List getFieldNames()
    {
        if (fieldNames == null)
        {
            fieldNames = new ArrayList();
              fieldNames.add("BookId");
              fieldNames.add("Title");
              fieldNames.add("ISBN");
              fieldNames.add("PublisherId");
              fieldNames.add("AuthorId");
              fieldNames = Collections.unmodifiableList(fieldNames);
        }
        return fieldNames;
    }

    /**
     * Retrieves a field from the object by name passed in as a String.
     *
     * @param name field name
     * @return value
     */
    public Object getByName(String name)
    {
          if (name.equals("BookId"))
        {
                return new Integer(getBookId());
            }
          if (name.equals("Title"))
        {
                return getTitle();
            }
          if (name.equals("ISBN"))
        {
                return getISBN();
            }
          if (name.equals("PublisherId"))
        {
                return new Integer(getPublisherId());
            }
          if (name.equals("AuthorId"))
        {
                return new Integer(getAuthorId());
            }
          return null;
    }
    
    /**
     * Retrieves a field from the object by name passed in
     * as a String.  The String must be one of the static
     * Strings defined in this Class' Peer.
     *
     * @param name peer name
     * @return value
     */
    public Object getByPeerName(String name)
    {
          if (name.equals(BookPeer.BOOK_ID))
        {
                return new Integer(getBookId());
            }
          if (name.equals(BookPeer.TITLE))
        {
                return getTitle();
            }
          if (name.equals(BookPeer.ISBN))
        {
                return getISBN();
            }
          if (name.equals(BookPeer.PUBLISHER_ID))
        {
                return new Integer(getPublisherId());
            }
          if (name.equals(BookPeer.AUTHOR_ID))
        {
                return new Integer(getAuthorId());
            }
          return null;
    }

    /**
     * Retrieves a field from the object by Position as specified
     * in the xml schema.  Zero-based.
     *
     * @param pos position in xml schema
     * @return value
     */
    public Object getByPosition(int pos)
    {
            if (pos == 0)
        {
                return new Integer(getBookId());
            }
              if (pos == 1)
        {
                return getTitle();
            }
              if (pos == 2)
        {
                return getISBN();
            }
              if (pos == 3)
        {
                return new Integer(getPublisherId());
            }
              if (pos == 4)
        {
                return new Integer(getAuthorId());
            }
              return null;
    }
     
    /**
     * Stores the object in the database.  If the object is new,
     * it inserts it; otherwise an update is performed.
     *
     * @throws Exception
     */
    public void save() throws Exception
    {
          save(BookPeer.getMapBuilder()
                .getDatabaseMap().getName());
      }

    /**
     * Stores the object in the database.  If the object is new,
     * it inserts it; otherwise an update is performed.
       * Note: this code is here because the method body is
     * auto-generated conditionally and therefore needs to be
     * in this file instead of in the super class, BaseObject.
       *
     * @param dbName
     * @throws TorqueException
     */
    public void save(String dbName) throws TorqueException
    {
        Connection con = null;
          try
        {
            con = Transaction.begin(dbName);
            save(con);
            Transaction.commit(con);
        }
        catch(TorqueException e)
        {
            Transaction.safeRollback(con);
            throw e;
        }
      }

      /** flag to prevent endless save loop, if this object is referenced
        by another object which falls in this transaction. */
    private boolean alreadyInSave = false;
      /**
     * Stores the object in the database.  If the object is new,
     * it inserts it; otherwise an update is performed.  This method
     * is meant to be used as part of a transaction, otherwise use
     * the save() method and the connection details will be handled
     * internally
     *
     * @param con
     * @throws TorqueException
     */
    public void save(Connection con) throws TorqueException
    {
          if (!alreadyInSave)
        {
            alreadyInSave = true;


  
            // If this object has been modified, then save it to the database.
            if (isModified())
            {
                if (isNew())
                {
                    BookPeer.doInsert((Book) this, con);
                    setNew(false);
                }
                else
                {
                    BookPeer.doUpdate((Book) this, con);
                }
            }

                      alreadyInSave = false;
        }
      }


                    
      /**
     * Set the PrimaryKey using ObjectKey.
     *
     * @param  bookId ObjectKey
     */
    public void setPrimaryKey(ObjectKey key)
        
    {
            setBookId(((NumberKey) key).intValue());
        }

    /**
     * Set the PrimaryKey using a String.
     *
     * @param key
     */
    public void setPrimaryKey(String key) 
    {
            setBookId(Integer.parseInt(key));
        }

  
    /**
     * returns an id that differentiates this object from others
     * of its class.
     */
    public ObjectKey getPrimaryKey()
    {
          return SimpleKey.keyFor(getBookId());
      }

 

    /**
     * Makes a copy of this object.
     * It creates a new object filling in the simple attributes.
       * It then fills all the association collections and sets the
     * related objects to isNew=true.
       */
      public Book copy() throws TorqueException
    {
        return copyInto(new Book());
    }
  
    protected Book copyInto(Book copyObj) throws TorqueException
    {
          copyObj.setBookId(bookId);
          copyObj.setTitle(title);
          copyObj.setISBN(iSBN);
          copyObj.setPublisherId(publisherId);
          copyObj.setAuthorId(authorId);
  
                    copyObj.setBookId(0);
                                    
        
        return copyObj;
    }

    /**
     * returns a peer instance associated with this om.  Since Peer classes
     * are not to have any instance attributes, this method returns the
     * same instance for all member of this class. The method could therefore
     * be static, but this would prevent one from overriding the behavior.
     */
    public BookPeer getPeer()
    {
        return peer;
    }

    public String toString()
    {
        StringBuffer str = new StringBuffer();
        str.append("Book:\n");
        str.append("BookId = ")
           .append(getBookId())
           .append("\n");
        str.append("Title = ")
           .append(getTitle())
           .append("\n");
        str.append("ISBN = ")
           .append(getISBN())
           .append("\n");
        str.append("PublisherId = ")
           .append(getPublisherId())
           .append("\n");
        str.append("AuthorId = ")
           .append(getAuthorId())
           .append("\n");
        return(str.toString());
    }
}