diff options
| author | Brian S. O'Neill <bronee@gmail.com> | 2006-12-15 04:47:19 +0000 |
|---|---|---|
| committer | Brian S. O'Neill <bronee@gmail.com> | 2006-12-15 04:47:19 +0000 |
| commit | 1eaba4475b929d3d8a84212eed1e5c3f5ccb0ca2 (patch) | |
| tree | 923e1971fa13d6d0de8085c632243d0893fe2c78 /src/main/java/com/amazon/carbonado | |
| parent | adb4710f51589b0ef019d7720a30fadae41c8cb6 (diff) | |
When a property evolves from a boxed primitive to an unboxed primitive, null is converted to zero or false instead of throwing a NullPointerException.
Diffstat (limited to 'src/main/java/com/amazon/carbonado')
| -rw-r--r-- | src/main/java/com/amazon/carbonado/raw/GenericEncodingStrategy.java | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/main/java/com/amazon/carbonado/raw/GenericEncodingStrategy.java b/src/main/java/com/amazon/carbonado/raw/GenericEncodingStrategy.java index 2cd0807..76622b7 100644 --- a/src/main/java/com/amazon/carbonado/raw/GenericEncodingStrategy.java +++ b/src/main/java/com/amazon/carbonado/raw/GenericEncodingStrategy.java @@ -1840,6 +1840,7 @@ public class GenericEncodingStrategy<S extends Storable> { if (prop.getType() == type.toClass()) {
break doDrop;
}
+
// Types differ, but if primitive types, perform conversion.
TypeDesc primType = type.toPrimitiveType();
if (primType != null) {
@@ -1847,7 +1848,42 @@ public class GenericEncodingStrategy<S extends Storable> { TypeDesc primPropType = propType.toPrimitiveType();
if (primPropType != null) {
// Apply conversion and store property.
+
+ Label convertLabel = a.createLabel();
+ Label convertedLabel = a.createLabel();
+
+ if (!type.isPrimitive() && propType.isPrimitive()) {
+ // Might attempt to unbox null, which
+ // throws NullPointerException. Instead,
+ // convert null to zero or false.
+
+ a.dup();
+ a.ifNullBranch(convertLabel, false);
+ a.pop(); // pop null off stack
+
+ switch (propType.getTypeCode()) {
+ default:
+ a.loadConstant(0);
+ break;
+ case TypeDesc.LONG_CODE:
+ a.loadConstant(0L);
+ break;
+ case TypeDesc.FLOAT_CODE:
+ a.loadConstant(0.0f);
+ break;
+ case TypeDesc.DOUBLE_CODE:
+ a.loadConstant(0.0d);
+ break;
+ }
+
+ a.branch(convertedLabel);
+ }
+
+ convertLabel.setLocation();
a.convert(type, propType);
+
+ convertedLabel.setLocation();
+
type = propType;
break doDrop;
}
|