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OPENJPA-2065: allow interface as result class 

git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@1190723 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Pinaki Poddar 2011-10-29 01:04:52 +00:00
parent 3494fab794
commit 8d21608618
1 changed files with 13 additions and 5 deletions
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18
openjpa-kernel/src/main/java/org/apache/openjpa/kernel/ResultPacker.java
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@ -117,10 +117,9 @@ public class ResultPacker {
/**
* Internal constructor.
*/
private ResultPacker(Class candidate, Class[] types, String[] aliases,
Class resultClass) {
private ResultPacker(Class<?> candidate, Class<?>[] types, String[] aliases, Class<?> resultClass) {
_aliases = aliases;
if (candidate == resultClass
if (candidate == resultClass || isInterface(resultClass, candidate)
||(types != null && types.length == 1 && types[0] == resultClass)
|| resultClass.isArray()) {
_resultClass = resultClass;
@ -135,7 +134,7 @@ public class ResultPacker {
_constructor = null;
} else if (!_stdTypes.contains(_resultClass = resultClass)) {
// check for a constructor that matches the projection types
Constructor cons = null;
Constructor<?> cons = null;
if (types != null && types.length > 0) {
try {
cons = _resultClass.getConstructor(types);
@ -150,7 +149,7 @@ public class ResultPacker {
_put = findPut(methods);
_sets = new Member[aliases.length];
Class type;
Class<?> type;
for (int i = 0; i < _sets.length; i++) {
type = (types == null) ? candidate : types[i];
_sets[i] = findSet(aliases[i], type, fields, methods);
@ -172,6 +171,15 @@ public class ResultPacker {
_constructor = null;
}
}
boolean isInterface(Class<?> intf, Class<?> actual) {
Class<?>[] intfs = actual.getInterfaces();
for (Class<?> c : intfs) {
if (c == intf)
return true;
}
return false;
}
/**
* Ensure that conversion is possible.