package de.uhilger.baselink;
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import java.sql.Connection;
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import java.sql.PreparedStatement;
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import java.sql.SQLException;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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/**
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*
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* @author Ulrich Hilger
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*/
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public class Inserter extends DBActor {
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private static final Logger logger = Logger.getLogger(Inserter.class.getName());
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public Inserter(PersistenceManager pm) {
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this.pm = pm;
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}
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/**
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* Add an object to the database
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*
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* <p>Use this method for single inserts. In cases where
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* several subsequent inserts for objects of the same class
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* are required the use of method <code>insert(Object, Record)</code>
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* is recommended instead to minimise instantiation
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* overhead.</p>
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*
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* @param o the object to add
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* @return the added object
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*/
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public Object insert(Object o) {
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return insert(o, new GenericRecord(o.getClass()));
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}
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/**
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* Add an object to the database
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*
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* <p>Use this method for single inserts. In cases where
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* several subsequent inserts for objects of the same class
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* are required the use of method <code>insert(Connection, Object, Record)</code>
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* is recommended instead to minimise instantiation
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* overhead.</p>
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*
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* @param c the connection to use, expected to be open and established
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* @param o the object to add
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* @return the object added to the database
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*/
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public Object insert(Connection c, Object o) {
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return insert(c, o, new GenericRecord(o.getClass()));
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}
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/**
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* Add an object to the database
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* @param o object to add
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* @param record reference to object to use to map between object and database
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* @return the added object
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*/
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public Object insert(Object o, Record record) {
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Connection c = null;
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try {
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c = pm.getConnection();
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o = insert(c, o, record);
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c.close();
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c = null;
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} catch (SQLException ex) {
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logger.log(Level.SEVERE, ex.getLocalizedMessage(), ex);
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} finally {
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pm.closeConnectionFinally(c);
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}
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return o;
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}
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/**
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* Add an object to the database
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* @param c the connection to use, expected to be open and established
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* @param o object to add
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* @param record reference to object to use to map between object and database
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* @return the object that was added
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*/
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public Object insert(Connection c, Object o, Record record) {
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Object addedObject = null;
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PreparedStatement ps = null;
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try {
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ps = record.getInsertStatment(c, o);
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ps.executeUpdate();
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ps.close();
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ps = null;
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addedObject = o;
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} catch (Exception ex) {
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logger.log(Level.SEVERE, ex.getLocalizedMessage(), ex);
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} finally {
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pm.closeStatementFinally(ps);
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}
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return addedObject;
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}
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}
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