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Defect #618

Array in object not an array but java.util.AbstractList

Added by Robert Ivens over 11 years ago. Updated over 11 years ago.

Status:
Resolved
Priority:
High
Assignee:
-
Category:
velocity
Target version:
v3.0
Start date:
12/31/2012
Due date:
% Done:

0%

Estimated time:
Browser (if web client):

Description

I have a context where I have an array with objects and those objects contain an array. Velocity doesn't see this last array as a JavaScript array but as a java.util.AbstractList object.
Something I can't use in Velocity it seems.

This is my vr_getContext method:

function vr_getContext(request) {
    var context = {
            test1: {
                object1: {
                    object2: {
                        array1: [{ values: ['value1', 'value2'] }]
                    }
                }
            },
            test2: {
                array1: [{ values: ['value1', 'value2'] }]
            },
            test3: [['value1', 'value2']]
        };

    return plugins.Velocity.createResponse(context);
}

This my template:

<!DOCTYPE html>
<html lang="nl">
<head>
    <meta charset="utf-8" />
    <title>Test</title>
</head>
<body>
<p>
<table>
    <tr><thead colspan="2">Test 1</thead></tr>
    <tr><td>test1.Object1</td><td>:$test1.object1</td></tr>
    <tr><td>test1.Object2</td><td>: $test1.object1.object2</td></tr>
    <tr><td>test1.Array1</td><td>: $test1.object1.object2.array1</td></tr>
    <tr><td>test1.Array1[0]</td><td>: $test1.object1.object2.array1[0]</td></tr>
    <tr><td>test1.Array1[0].values</td><td>: $test1.object1.object2.array1[0].values</td></tr>
    <tr><td>test1.Array1[0].values[0]</td><td>: $test1.object1.object2.array1[0].values[0]</td></tr>
</table>
</p>
<p>
<table>
    <tr><thead colspan="2">Test 2</thead></tr>
    <tr><td>test2.Array1</td><td>: $test2.array1</td></tr>
    <tr><td>test2.Array1[0]</td><td>: $test2.array1[0]</td></tr>
    <tr><td>test2.Array1[0].values</td><td>: $test2.array1[0].values</td></tr>
    <tr><td>test2.Array1[0].values[0]</td><td>: $test2.array1[0].values[0]</td></tr>
</table>
</p>
<p>
<table>
    <tr><thead colspan="2">Test 3</thead></tr>
    <tr><td>test3</td><td>: $test3</td></tr>
    <tr><td>test3[0]</td><td>: $test3[0]</td></tr>
    <tr><td>test3[0][0]</td><td>: $test3[0][0]</td></tr>
</table>
</p>
</body>
</html>

This will return the following output:

Test 1
test1.Object1    :{object2: {array1: [{values: [value1, value2]}]}}
test1.Object2    : {array1: [{values: [value1, value2]}]}
test1.Array1    : [{values: [value1, value2]}]
test1.Array1[0]    : {values: [value1, value2]}
test1.Array1[0].values    : java.util.AbstractList$Itr@5baf4de3
test1.Array1[0].values[0]    : $test1.object1.object2.array1[0].values[0]

Test 2
test2.Array1    : [{values: [value1, value2]}]
test2.Array1[0]    : {values: [value1, value2]}
test2.Array1[0].values    : java.util.AbstractList$Itr@1cef0866
test2.Array1[0].values[0]    : $test2.array1[0].values[0]

Test 3
test3    : [[value1, value2]]
test3[0]    : [value1, value2]
test3[0][0]    : value1

Here you can see that test3 does return the array as an array when used inside another array but test1 and test2 show that when the second array is inside an object you get something completely different.

History

#1

Updated by Patrick Talbot over 11 years ago

  • Status changed from New to In Progress

It's weird that it would happen after a certain level of inclusion, this should be recursive.
I'll have another look.

#2

Updated by Patrick Talbot over 11 years ago

  • Status changed from In Progress to Resolved

"values" was actually a reserved word, because of the presence of a public Iterator<Object> getValues() method in the ScriptableWrapper, so it was returning an internal List.Iterator when called.
Changing the name of your variable to "vals" for example shows that it's not a recursion issue.

I've addedd getValues() a while ago because I thought it could be good to have, there's also a getProperties() method that you can access to iterate on all the properties of an object (meaning that "properties" is also a reserved keyword).

I've removed the getValues() as this can be easily achieved with a simple foreach, so you will be able to use 'values' inside an object with the next version.

I've kept getProperties() though as it can be convenient to loop through all the properties of a JavaScript object with #foreach($property in $obj.properties)

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