LinkTool.addAllParameters causes "ignored" parameters to pollute parent link
objects
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Key: VELTOOLS-148
URL: https://issues.apache.org/jira/browse/VELTOOLS-148
Project: Velocity Tools
Issue Type: Bug
Components: VelocityView
Affects Versions: 2.0
Environment: Velocity 1.7, Velocity-Tools 2.0
Reporter: Christopher Schultz
The following code will not perform as expected with $link represents an
instance of view.tools.LinkTool:
#set($forward = $link.setRelative('/foo').addQueryData('bar', 'baz'))
one = $forward.addAllParameters()<br />
two = $forward.addAllParameters()<br />
The "addQueryData" appears to be required in order to make this fail.
The addAllParameters method calls view.LinkTool.addRequestParamsExcept which
calls view.LinkTool.addRequestParams which calls generic.LinkTool.duplicate()
in order to duplicate the LinkTool before calling view.tools.setParam
repeatedly on it.
generic.LinkTool.duplicate clones the LinkTool object including the
view.tools.LinkTool's reference to the "parametersToIgnore" field. The "child"
instances of this LinkTool will then have their "ignores" list bleed-into the
parent (and also other siblings) and the ultimate effect is that LinkTool
objects derived from that common root will be unable to call addAllParameters()
because all parameters will have been added to that ignores list after the
first invocation.
The obvious solution seems to be that view.tools.LinkTool needs to override the
duplicate(boolean) method in order to clone the ignores list.
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