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体验新版 GitCode,发现更多精彩内容 >>
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7553b76f
编写于
10月 10, 2010
作者:
J
Juergen Hoeller
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差异文件
SpEL method invocations prefer method with fewest parameters (e.g. no-arg over vararg; SPR-7633)
上级
d78eda8a
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
37 addition
and
10 deletion
+37
-10
org.springframework.expression/src/main/java/org/springframework/expression/spel/support/ReflectiveConstructorResolver.java
...xpression/spel/support/ReflectiveConstructorResolver.java
+16
-3
org.springframework.expression/src/main/java/org/springframework/expression/spel/support/ReflectiveMethodResolver.java
...ork/expression/spel/support/ReflectiveMethodResolver.java
+21
-7
未找到文件。
org.springframework.expression/src/main/java/org/springframework/expression/spel/support/ReflectiveConstructorResolver.java
浏览文件 @
7553b76f
...
...
@@ -17,17 +17,19 @@
package
org.springframework.expression.spel.support
;
import
java.lang.reflect.Constructor
;
import
java.util.List
;
import
java.util.ArrayList
;
import
java.util.Arrays
;
import
java.util.Comparator
;
import
java.util.List
;
import
org.springframework.core.MethodParameter
;
import
org.springframework.core.convert.TypeDescriptor
;
import
org.springframework.expression.AccessException
;
import
org.springframework.expression.ConstructorExecutor
;
import
org.springframework.expression.ConstructorResolver
;
import
org.springframework.expression.EvaluationContext
;
import
org.springframework.expression.EvaluationException
;
import
org.springframework.expression.TypeConverter
;
import
org.springframework.core.convert.TypeDescriptor
;
import
org.springframework.core.MethodParameter
;
/**
* A constructor resolver that uses reflection to locate the constructor that should be invoked
...
...
@@ -49,13 +51,24 @@ public class ReflectiveConstructorResolver implements ConstructorResolver {
*/
public
ConstructorExecutor
resolve
(
EvaluationContext
context
,
String
typename
,
List
<
TypeDescriptor
>
argumentTypes
)
throws
AccessException
{
try
{
TypeConverter
typeConverter
=
context
.
getTypeConverter
();
Class
<?>
type
=
context
.
getTypeLocator
().
findType
(
typename
);
Constructor
[]
ctors
=
type
.
getConstructors
();
Arrays
.
sort
(
ctors
,
new
Comparator
<
Constructor
>()
{
public
int
compare
(
Constructor
c1
,
Constructor
c2
)
{
int
c1pl
=
c1
.
getParameterTypes
().
length
;
int
c2pl
=
c2
.
getParameterTypes
().
length
;
return
(
new
Integer
(
c1pl
)).
compareTo
(
c2pl
);
}
});
Constructor
closeMatch
=
null
;
int
[]
argsToConvert
=
null
;
Constructor
matchRequiringConversion
=
null
;
for
(
Constructor
ctor
:
ctors
)
{
Class
[]
paramTypes
=
ctor
.
getParameterTypes
();
List
<
TypeDescriptor
>
paramDescriptors
=
new
ArrayList
<
TypeDescriptor
>(
paramTypes
.
length
);
...
...
org.springframework.expression/src/main/java/org/springframework/expression/spel/support/ReflectiveMethodResolver.java
浏览文件 @
7553b76f
...
...
@@ -18,6 +18,8 @@ package org.springframework.expression.spel.support;
import
java.lang.reflect.Method
;
import
java.util.ArrayList
;
import
java.util.Arrays
;
import
java.util.Comparator
;
import
java.util.HashMap
;
import
java.util.List
;
import
java.util.Map
;
...
...
@@ -33,11 +35,13 @@ import org.springframework.expression.MethodResolver;
import
org.springframework.expression.TypeConverter
;
import
org.springframework.expression.spel.SpelEvaluationException
;
import
org.springframework.expression.spel.SpelMessage
;
import
org.springframework.util.CollectionUtils
;
/**
* A method resolver that uses reflection to locate the method that should be invoked.
*
* @author Andy Clement
* @author Juergen Hoeller
* @since 3.0
*/
public
class
ReflectiveMethodResolver
implements
MethodResolver
{
...
...
@@ -58,31 +62,41 @@ public class ReflectiveMethodResolver implements MethodResolver {
*/
public
MethodExecutor
resolve
(
EvaluationContext
context
,
Object
targetObject
,
String
name
,
List
<
TypeDescriptor
>
argumentTypes
)
throws
AccessException
{
try
{
TypeConverter
typeConverter
=
context
.
getTypeConverter
();
Class
<?>
type
=
(
targetObject
instanceof
Class
?
(
Class
<?>)
targetObject
:
targetObject
.
getClass
());
Method
[]
methods
=
type
.
getMethods
();
// If a filter is registered for this type, call it
MethodFilter
methodfilter
=
(
filters
==
null
?
null
:
filters
.
get
(
type
)
);
if
(
methodfilter
!=
null
)
{
MethodFilter
filter
=
(
this
.
filters
!=
null
?
this
.
filters
.
get
(
type
)
:
null
);
if
(
filter
!=
null
)
{
List
<
Method
>
methodsForFiltering
=
new
ArrayList
<
Method
>();
for
(
Method
method:
methods
)
{
methodsForFiltering
.
add
(
method
);
}
List
<
Method
>
methodsFiltered
=
method
filter
.
filter
(
methodsForFiltering
);
if
(
methodsFiltered
==
null
||
methodsFiltered
.
size
()==
0
)
{
List
<
Method
>
methodsFiltered
=
filter
.
filter
(
methodsForFiltering
);
if
(
CollectionUtils
.
isEmpty
(
methodsFiltered
)
)
{
methods
=
NO_METHODS
;
}
else
{
methods
=
methodsFiltered
.
toArray
(
new
Method
[
methodsFiltered
.
size
()]);
}
}
Arrays
.
sort
(
methods
,
new
Comparator
<
Method
>()
{
public
int
compare
(
Method
m1
,
Method
m2
)
{
int
m1pl
=
m1
.
getParameterTypes
().
length
;
int
m2pl
=
m2
.
getParameterTypes
().
length
;
return
(
new
Integer
(
m1pl
)).
compareTo
(
m2pl
);
}
});
Method
closeMatch
=
null
;
int
[]
argsToConvert
=
null
;
boolean
multipleOptions
=
false
;
Method
matchRequiringConversion
=
null
;
boolean
multipleOptions
=
false
;
for
(
Method
method
:
methods
)
{
if
(
method
.
isBridge
())
{
continue
;
...
...
@@ -139,7 +153,7 @@ public class ReflectiveMethodResolver implements MethodResolver {
public
void
registerMethodFilter
(
Class
<?>
type
,
MethodFilter
filter
)
{
if
(
this
.
filters
==
null
)
{
this
.
filters
=
new
HashMap
<
Class
<?>,
MethodFilter
>();
this
.
filters
=
new
HashMap
<
Class
<?>,
MethodFilter
>();
}
if
(
filter
==
null
)
{
this
.
filters
.
remove
(
type
);
...
...
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