程序包 org.hibernate.type.descriptor.sql

类 BasicExtractor<J>

java.lang.Object

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

所有已实现的接口:

ValueExtractor<J>

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

Convenience base implementation of ValueExtractor

作者:

Steve Ebersole

构造器概要

构造器

构造器	说明
BasicExtractor(JavaTypeDescriptor<J> javaDescriptor, SqlTypeDescriptor sqlDescriptor)

方法概要

修饰符和类型	方法	说明
protected abstract J	doExtract(CallableStatement statement, int index, WrapperOptions options)	Perform the extraction.
protected abstract J	doExtract(CallableStatement statement, String name, WrapperOptions options)	Perform the extraction.
protected abstract J	doExtract(ResultSet rs, String name, WrapperOptions options)	Perform the extraction.
J	extract(CallableStatement statement, int index, WrapperOptions options)
J	extract(CallableStatement statement, String[] paramNames, WrapperOptions options)
J	extract(ResultSet rs, String name, WrapperOptions options)	Extract value from result set
JavaTypeDescriptor<J>	getJavaDescriptor()
SqlTypeDescriptor	getSqlDescriptor()

从类继承的方法 java.lang.Object

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

构造器详细资料

BasicExtractor

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

方法详细资料

getJavaDescriptor

public JavaTypeDescriptor<J> getJavaDescriptor()

getSqlDescriptor

public SqlTypeDescriptor getSqlDescriptor()

extract

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

从接口复制的说明: ValueExtractor

Extract value from result set

指定者:

extract 在接口中 ValueExtractor<J>

参数:

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

返回:

The extracted value

抛出:

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.

参数:

rs - The result set

name - The value name in the result set

options - The binding options

返回:

The extracted value.

抛出:

SQLException - Indicates a problem access the result set

extract

public J extract(CallableStatement statement,
                 int index,
                 WrapperOptions options)
          throws SQLException

指定者:

extract 在接口中 ValueExtractor<J>

抛出:

SQLException

doExtract

protected abstract J doExtract(CallableStatement statement,
                               int index,
                               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.

参数:

statement - The callable statement containing the output parameter

index - The index (position) of the output parameter

options - The binding options

返回:

The extracted value.

抛出:

SQLException - Indicates a problem accessing the parameter value

extract

public J extract(CallableStatement statement,
                 String[] paramNames,
                 WrapperOptions options)
          throws SQLException

指定者:

extract 在接口中 ValueExtractor<J>

抛出:

SQLException

doExtract

protected abstract J doExtract(CallableStatement statement,
                               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.

参数:

statement - The callable statement containing the output parameter

name - The output parameter name

options - The binding options

返回:

The extracted value.

抛出:

SQLException - Indicates a problem accessing the parameter value