root
/
spring-framework
mirror of https://github.com/spring-projects/spring-framework.git
1
0
Fork 0
Code Issues Actions 6 Packages Projects Releases Wiki Activity

Use SingletonSupplier for XStream instance in XStreamMarshaller 

Closes gh-25017
This commit is contained in:
Sam Brannen 2020-05-07 12:35:32 +02:00
parent ce11fdfa80
commit 4805288122
1 changed files with 6 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
spring-oxm/src/main/java/org/springframework/oxm/xstream/XStreamMarshaller.java
View File

@ -84,6 +84,7 @@ import org.springframework.oxm.support.AbstractMarshaller;
import org.springframework.util.ClassUtils;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;
import org.springframework.util.function.SingletonSupplier;
import org.springframework.util.xml.StaxUtils;
/**
@ -187,8 +188,7 @@ public class XStreamMarshaller extends AbstractMarshaller implements BeanClassLo
private ClassLoader beanClassLoader = new CompositeClassLoader();
@Nullable
private volatile XStream xstream;
private final SingletonSupplier<XStream> xstream = SingletonSupplier.of(this::buildXStream);
/**
@ -407,12 +407,12 @@ public class XStreamMarshaller extends AbstractMarshaller implements BeanClassLo
@Override
public void afterPropertiesSet() {
this.xstream = buildXStream();
// no-op due to use of SingletonSupplier for the XStream field.
}
/**
* Build the native XStream delegate to be used by this marshaller,
* delegating to {@link #constructXStream()}, {@link #configureXStream}
* delegating to {@link #constructXStream}, {@link #configureXStream},
* and {@link #customizeXStream}.
*/
protected XStream buildXStream() {
@ -617,21 +617,11 @@ public class XStreamMarshaller extends AbstractMarshaller implements BeanClassLo
* <p><b>NOTE: This method has been marked as final as of Spring 4.0.</b>
* It can be used to access the fully configured XStream for marshalling
* but not configuration purposes anymore.
* <p>As of Spring Framework 5.2.7, creation of the {@link XStream} instance
* <p>As of Spring Framework 5.1.16, creation of the {@link XStream} instance
* returned by this method is thread safe.
*/
public final XStream getXStream() {
XStream xs = this.xstream;
if (xs == null) {
synchronized (this) {
xs = this.xstream;
if (xs == null) {
xs = buildXStream();
this.xstream = xs;
}
}
}
return xs;
return this.xstream.obtain();
}