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This commit is contained in:
Juergen Hoeller
2009-11-27 01:34:56 +00:00
parent bc06ffb6b8
commit cc0bd730eb
9 changed files with 129 additions and 105 deletions
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36
org.springframework.expression/src/main/java/org/springframework/expression/spel/support/StandardTypeConverter.java
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@@ -28,7 +28,8 @@ import org.springframework.expression.spel.SpelMessage;
import org.springframework.util.Assert;
/**
* Default implementation of the {@link TypeConverter} interface, delegating to a core Spring {@link ConversionService}.
* Default implementation of the {@link TypeConverter} interface,
* delegating to a core Spring {@link ConversionService}.
*
* @author Juergen Hoeller
* @author Andy Clement
@@ -37,12 +38,18 @@ import org.springframework.util.Assert;
*/
public class StandardTypeConverter implements TypeConverter {
private static ConversionService DEFAULT_INSTANCE;
private static ConversionService defaultConversionService;
private final ConversionService conversionService;
public StandardTypeConverter() {
this.conversionService = getDefaultConversionService();
synchronized (this) {
if (defaultConversionService == null) {
defaultConversionService = ConversionServiceFactory.createDefaultConversionService();
}
}
this.conversionService = defaultConversionService;
}
public StandardTypeConverter(ConversionService conversionService) {
@@ -50,6 +57,7 @@ public class StandardTypeConverter implements TypeConverter {
this.conversionService = conversionService;
}
public boolean canConvert(Class<?> sourceType, Class<?> targetType) {
return this.conversionService.canConvert(sourceType, targetType);
}
@@ -57,21 +65,15 @@ public class StandardTypeConverter implements TypeConverter {
public Object convertValue(Object value, TypeDescriptor typeDescriptor) throws EvaluationException {
try {
return this.conversionService.convert(value, TypeDescriptor.forObject(value), typeDescriptor);
} catch (ConverterNotFoundException cenfe) {
throw new SpelEvaluationException(cenfe, SpelMessage.TYPE_CONVERSION_ERROR, value != null ? value
.getClass() : null, typeDescriptor.asString());
} catch (ConversionException ce) {
throw new SpelEvaluationException(ce, SpelMessage.TYPE_CONVERSION_ERROR, value != null ? value.getClass()
: null, typeDescriptor.asString());
}
catch (ConverterNotFoundException cenfe) {
throw new SpelEvaluationException(cenfe, SpelMessage.TYPE_CONVERSION_ERROR,
(value != null ? value.getClass() : null), typeDescriptor.asString());
}
catch (ConversionException ce) {
throw new SpelEvaluationException(ce, SpelMessage.TYPE_CONVERSION_ERROR,
(value != null ? value.getClass() : null), typeDescriptor.asString());
}
}
private ConversionService getDefaultConversionService() {
synchronized(this) {
if (DEFAULT_INSTANCE == null) {
DEFAULT_INSTANCE = ConversionServiceFactory.createDefaultConversionService();
}
}
return DEFAULT_INSTANCE;
}
}