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体验新版 GitCode,发现更多精彩内容 >>
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8c87d847
编写于
10月 23, 2008
作者:
A
Arjen Poutsma
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差异文件
Removed Commons Attributes support for Transactional
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org.springframework.transaction/src/main/java/org/springframework/transaction/interceptor/AttributesTransactionAttributeSource.java
...ion/interceptor/AttributesTransactionAttributeSource.java
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org.springframework.transaction/src/main/java/org/springframework/transaction/interceptor/AttributesTransactionAttributeSource.java
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/*
* Copyright 2002-2007 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package
org.springframework.transaction.interceptor
;
import
java.lang.reflect.Method
;
import
java.util.Collection
;
import
java.util.Iterator
;
import
java.util.LinkedList
;
import
java.util.List
;
import
org.springframework.beans.factory.InitializingBean
;
import
org.springframework.metadata.Attributes
;
import
org.springframework.util.Assert
;
import
org.springframework.util.ObjectUtils
;
/**
* Implementation of the {@link TransactionAttributeSource} interface that reads
* metadata via Spring's {@link org.springframework.metadata.Attributes} abstraction.
*
* <p>Typically used for reading in source-level attributes via Commons Attributes.
*
* @author Rod Johnson
* @author Juergen Hoeller
* @see org.springframework.metadata.Attributes
* @see org.springframework.metadata.commons.CommonsAttributes
*/
public
class
AttributesTransactionAttributeSource
extends
AbstractFallbackTransactionAttributeSource
implements
InitializingBean
{
/**
* Underlying Attributes implementation that we're using.
*/
private
Attributes
attributes
;
/**
* Create a new AttributesTransactionAttributeSource.
* @see #setAttributes
*/
public
AttributesTransactionAttributeSource
()
{
}
/**
* Create a new AttributesTransactionAttributeSource.
* @param attributes the Attributes implementation to use
* @see org.springframework.metadata.commons.CommonsAttributes
*/
public
AttributesTransactionAttributeSource
(
Attributes
attributes
)
{
Assert
.
notNull
(
attributes
,
"Attributes must not be null"
);
this
.
attributes
=
attributes
;
}
/**
* Set the Attributes implementation to use.
* @see org.springframework.metadata.commons.CommonsAttributes
*/
public
void
setAttributes
(
Attributes
attributes
)
{
this
.
attributes
=
attributes
;
}
public
void
afterPropertiesSet
()
{
Assert
.
notNull
(
this
.
attributes
,
"Property 'attributes' is required"
);
}
protected
TransactionAttribute
findTransactionAttribute
(
Method
method
)
{
Assert
.
notNull
(
this
.
attributes
,
"Property 'attributes' is required"
);
return
findTransactionAttribute
(
this
.
attributes
.
getAttributes
(
method
));
}
protected
TransactionAttribute
findTransactionAttribute
(
Class
clazz
)
{
Assert
.
notNull
(
this
.
attributes
,
"Property 'attributes' is required"
);
return
findTransactionAttribute
(
this
.
attributes
.
getAttributes
(
clazz
));
}
/**
* Return the transaction attribute, given this set of attributes
* attached to a method or class.
* <p>Protected rather than private as subclasses may want to customize
* how this is done: for example, returning a TransactionAttribute
* affected by the values of other attributes.
* <p>This implementation takes into account RollbackRuleAttributes,
* if the TransactionAttribute is a RuleBasedTransactionAttribute.
* @param atts attributes attached to a method or class (may be <code>null</code>)
* @return TransactionAttribute the corresponding transaction attribute,
* or <code>null</code> if none was found
*/
protected
TransactionAttribute
findTransactionAttribute
(
Collection
atts
)
{
if
(
atts
==
null
)
{
return
null
;
}
TransactionAttribute
txAttribute
=
null
;
// Check whether there is a transaction attribute.
for
(
Iterator
it
=
atts
.
iterator
();
it
.
hasNext
()
&&
txAttribute
==
null
;
)
{
Object
att
=
it
.
next
();
if
(
att
instanceof
TransactionAttribute
)
{
txAttribute
=
(
TransactionAttribute
)
att
;
}
}
// Check if we have a RuleBasedTransactionAttribute.
if
(
txAttribute
instanceof
RuleBasedTransactionAttribute
)
{
RuleBasedTransactionAttribute
rbta
=
(
RuleBasedTransactionAttribute
)
txAttribute
;
// We really want value: bit of a hack.
List
rollbackRules
=
new
LinkedList
();
for
(
Iterator
it
=
atts
.
iterator
();
it
.
hasNext
();
)
{
Object
att
=
it
.
next
();
if
(
att
instanceof
RollbackRuleAttribute
)
{
rollbackRules
.
add
(
att
);
}
}
// Repeatedly setting this isn't elegant, but it works.
rbta
.
setRollbackRules
(
rollbackRules
);
}
return
txAttribute
;
}
public
boolean
equals
(
Object
other
)
{
if
(
this
==
other
)
{
return
true
;
}
if
(!(
other
instanceof
AttributesTransactionAttributeSource
))
{
return
false
;
}
AttributesTransactionAttributeSource
otherTas
=
(
AttributesTransactionAttributeSource
)
other
;
return
ObjectUtils
.
nullSafeEquals
(
this
.
attributes
,
otherTas
.
attributes
);
}
public
int
hashCode
()
{
return
AttributesTransactionAttributeSource
.
class
.
hashCode
();
}
}
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