Package com.atlassian.hibernate

Class BucketClobStringType

java.lang.Object

com.atlassian.hibernate.BucketClobStringType

All Implemented Interfaces:

Serializable, org.hibernate.usertype.UserType

Direct Known Subclasses:

CryptographicKeyType, CustomClobType

public class BucketClobStringType
extends Object
implements org.hibernate.usertype.UserType, Serializable

A custom UserType that maps stings to clobs.

This type supports custom handling for:

• Oracle
• MySQL
• HSQL

This custom UserType contains a workaround for the Oracle Clob memory problem. To recap, the issue is that when dealing with Clobs, the oracle drivers will return strings with 64k char[] regardless of the amount of data they hold. So, to fix this we need to release that char[] as quickly as possible, via new String().

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	BucketClobStringType.LobCreatorSynchronization	Callback for resource cleanup at the end of a transaction.

Constructor Summary

Constructors

Constructor	Description
BucketClobStringType()

Method Summary

Modifier and Type	Method	Description
Object	assemble(Serializable cached, Object owner)
Object	deepCopy(Object value)
Serializable	disassemble(Object value)
boolean	equals(Object x, Object y)
protected org.springframework.jdbc.support.lob.LobHandler	getLobHandler()	Retrieve the configured LobHandler.
int	hashCode(Object x)
boolean	isMutable()
protected boolean	isUseSetClobAsString()	Get the UseSetString property.
boolean	isUsingHSQL()	Returns ture if we are running with the HSQL hibernate dialect.
boolean	isUsingMySQL()	Returns true if we are running with the MySQL hibernate dialect.
boolean	isUsingOracle()	Returns true if we are running with the Oracle hibernate dialect.
Object	nullSafeGet(ResultSet rs, String[] names, org.hibernate.engine.spi.SharedSessionContractImplementor session, Object owner)
void	nullSafeSet(PreparedStatement st, Object value, int index, org.hibernate.engine.spi.SharedSessionContractImplementor session)
Object	replace(Object original, Object target, Object owner)
Class	returnedClass()
protected void	setUseSetClobAsString(boolean b)	Set the UseSetString property.
int[]	sqlTypes()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BucketClobStringType

public BucketClobStringType()

Method Detail

isUsingOracle

public boolean isUsingOracle()

Returns true if we are running with the Oracle hibernate dialect.

Returns:

isUsingHSQL

public boolean isUsingHSQL()

Returns ture if we are running with the HSQL hibernate dialect.

Returns:

isUsingMySQL

public boolean isUsingMySQL()

Returns true if we are running with the MySQL hibernate dialect.

Returns:

getLobHandler

protected org.springframework.jdbc.support.lob.LobHandler getLobHandler()

Retrieve the configured LobHandler. This handler may vary with the hibernate dialect.

Returns:

sqlTypes

public int[] sqlTypes()

Specified by:

sqlTypes in interface org.hibernate.usertype.UserType

Returns:

returnedClass

public Class returnedClass()

Specified by:

returnedClass in interface org.hibernate.usertype.UserType

equals

public boolean equals(Object x,
                      Object y)

Specified by:

equals in interface org.hibernate.usertype.UserType

nullSafeGet

public Object nullSafeGet(ResultSet rs,
                          String[] names,
                          org.hibernate.engine.spi.SharedSessionContractImplementor session,
                          Object owner)
                   throws SQLException

Specified by:

nullSafeGet in interface org.hibernate.usertype.UserType

Throws:

SQLException

nullSafeSet

public void nullSafeSet(PreparedStatement st,
                        Object value,
                        int index,
                        org.hibernate.engine.spi.SharedSessionContractImplementor session)
                 throws org.hibernate.HibernateException,
                        SQLException

Specified by:

nullSafeSet in interface org.hibernate.usertype.UserType

Throws:

org.hibernate.HibernateException

SQLException

deepCopy

public Object deepCopy(Object value)

Specified by:

deepCopy in interface org.hibernate.usertype.UserType

isMutable

public boolean isMutable()

Specified by:

isMutable in interface org.hibernate.usertype.UserType

setUseSetClobAsString

protected void setUseSetClobAsString(boolean b)

Set the UseSetString property.

Parameters:

b - the value

See Also:

useSetClobAsString

isUseSetClobAsString

protected boolean isUseSetClobAsString()

Get the UseSetString property.

Returns:

the value

See Also:

useSetClobAsString

hashCode

public int hashCode(Object x)
             throws org.hibernate.HibernateException

Specified by:

hashCode in interface org.hibernate.usertype.UserType

Throws:

org.hibernate.HibernateException

disassemble

public Serializable disassemble(Object value)
                         throws org.hibernate.HibernateException

Specified by:

disassemble in interface org.hibernate.usertype.UserType

Throws:

org.hibernate.HibernateException

assemble

public Object assemble(Serializable cached,
                       Object owner)
                throws org.hibernate.HibernateException

Specified by:

assemble in interface org.hibernate.usertype.UserType

Throws:

org.hibernate.HibernateException

replace

public Object replace(Object original,
                      Object target,
                      Object owner)
               throws org.hibernate.HibernateException

Specified by:

replace in interface org.hibernate.usertype.UserType

Throws:

org.hibernate.HibernateException