SQLStatementUpdate (Castor JavaDoc)

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java.lang.Object
- org.castor.cpa.persistence.sql.engine.SQLStatementUpdate

```
public final class SQLStatementUpdate
extends java.lang.Object
```
SQLStatementStore class that makes use of Update class hierarchy to generate sql query structure. It provides parameter binding support to the prepared statement and then executes it.

Version:

$Revision: 8778 $ $Date: 2006-04-25 15:08:23 -0600 (Tue, 25 Apr 2006) $

Author:

Assaf Arkin, Thomas Yip, Bruce Snyder, Werner Guttmann, Ralf Joachim, Ahmad Hassan, Dennis Butterstein

Constructor Summary

Constructors
Constructor Description

SQLStatementUpdate(SQLEngine engine)
Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.Object`	`executeStatement(CastorConnection conn, Identity identity, ProposedEntity newentity, ProposedEntity oldentity)`	Stores the identity to the database using JDBC Connection.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SQLStatementUpdate
```
public SQLStatementUpdate(SQLEngine engine)
```
    Constructor.
    
    Parameters:
    
    engine - SQL engine for all persistence operations at entities of the type this class is responsible for. Holds all required information of the entity type.
- Method Detail
  - executeStatement
```
public java.lang.Object executeStatement(CastorConnection conn,
                                         Identity identity,
                                         ProposedEntity newentity,
                                         ProposedEntity oldentity)
                                  throws PersistenceException
```
    Stores the identity to the database using JDBC Connection.
    
    Parameters:
    
    conn - CastorConnection holding connection and PersistenceFactory to be used to create statement.
    
    identity - Identity of the object to update.
    
    newentity - Entity holding the new values to set with update.
    
    oldentity - Entity holding the old values to check for concurrent modifications.
    
    Returns:
    
    Always returns null.
    
    Throws:
    
    PersistenceException - If failed to update object in database. This could happen if a database access error occurs, type of one of the values to bind is ambiguous, identity or column size mismatch or object to be updated does not exist.

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