org.hibernate.type.descriptor.sql
Class BasicExtractor<J>

java.lang.Object
  org.hibernate.type.descriptor.sql.BasicExtractor<J>

All Implemented Interfaces:

ValueExtractor<J>

public abstract class BasicExtractor<J>
extends Object
implements ValueExtractor<J>

Convenience base implementation of ValueExtractor

Author:

Steve Ebersole

Constructor Summary

BasicExtractor(JavaTypeDescriptor<J> javaDescriptor, SqlTypeDescriptor sqlDescriptor)

Method Summary

protected abstract J	doExtract(ResultSet rs, String name, WrapperOptions options) Perform the extraction.
J	extract(ResultSet rs, String name, WrapperOptions options) Extract value from result set
JavaTypeDescriptor<J>	getJavaDescriptor()
SqlTypeDescriptor	getSqlDescriptor()

Methods inherited from class java.lang.Object

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

Constructor Detail

BasicExtractor

public BasicExtractor(JavaTypeDescriptor<J> javaDescriptor,
                      SqlTypeDescriptor sqlDescriptor)

Method Detail

getJavaDescriptor

public JavaTypeDescriptor<J> getJavaDescriptor()

getSqlDescriptor

public SqlTypeDescriptor getSqlDescriptor()

extract

public J extract(ResultSet rs,
                 String name,
                 WrapperOptions options)
          throws SQLException

Extract value from result set

Specified by:

extract in interface ValueExtractor<J>

Parameters:

rs - The result set from which to extract the value

name - The name by which to extract the value from the result set

options - The options

Returns:

The extracted value

Throws:

SQLException - Indicates a JDBC error occurred.

doExtract

protected abstract J doExtract(ResultSet rs,
                               String name,
                               WrapperOptions options)
                        throws SQLException

Perform the extraction.

Called from extract(java.sql.ResultSet, java.lang.String, org.hibernate.type.descriptor.WrapperOptions). Null checking of the value (as well as consulting ResultSet.wasNull()) is done there.

Parameters:

rs - The result set

name - The value name in the result set

options - The binding options

Returns:

The extracted value.

Throws:

SQLException - Indicates a problem access the result set