Juan José Ramos Cassella created GEODE-6848:
-----------------------------------------------
Summary: PreventReserializationSerializer: not enough information
to deserialize repeated objects
Key: GEODE-6848
URL: https://issues.apache.org/jira/browse/GEODE-6848
Project: Geode
Issue Type: Improvement
Components: querying
Reporter: Juan José Ramos Cassella
In order to prevent re-serialization of already serialized objects, circular
dependencies and infinite recursion, the {{PreventReserializationSerializer}}
class maintains an internal {{Map}} of objects already seen and, instead of
serializing the object again, it just adds some metadata ({{duplicate}} /
{{@reference}}) to the output. The problem is that this metadata can't be used
at all to instantiate the object by the user of the class, basically because
the objects don't have an {{id}} or something that could be referenced from
within the metadata.
The following is an example of the issue, the client of the class wouldn't know
if the last element is a duplicate of the first or second {{Order}} within the
array:
{code:java}
private static class Order {
private final String id;
public Order(String id) {
this.id = id;
}
}
@Test
public void whichOrder() {
Order order1 = new Order("order1");
Order order2 = new Order("order2");
QueryResultFormatter queryResultFormatter = new
QueryResultFormatter(100).add(RESULT, Arrays.asList(order1, order2, order1));
System.out.println(queryResultFormatter.toString());
}
{code}
{noformat}
{
"result": [
[
"java.util.ArrayList",
{
"0": [
"org.apache.geode.Order",
{
"id": [
"java.lang.String",
"order1"
]
}
],
"1": [
"org.apache.geode.Order",
{
"id": [
"java.lang.String",
"order2"
]
}
],
"2": "duplicate org.apache.geode.Order"
}
]
]
}
{noformat}
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