Oliver Heger created CONFIGURATION-559:
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Summary: Support setting default values for configurations
Key: CONFIGURATION-559
URL: https://issues.apache.org/jira/browse/CONFIGURATION-559
Project: Commons Configuration
Issue Type: New Feature
Affects Versions: 1.9
Reporter: Oliver Heger
Fix For: 2.0
In version 1.x it was possible to set a few default values for the properties
of configuration instances (e.g. the list delimiter or the expression engine
for XML configurations). These settings were used if they were not overridden
for a specific configuration instance. This mechanism was mainly based on
static fields which is unflexible and thread-hostile.
In the new design, configuration builders are used to create configuration
objects. Parameter objects can be passed to the builder allowing a fine-grained
configuration of the instances to be created. Because there are many settings
it would be helpful if there was a way to define certain default values. An
application creating multiple configuration instances with the same settings
could define the used defaults once and then reuse them.
Default settings should be possible for all parameters object supported by the
different builder implementations. No static fields should be used to avoid the
drawbacks of the current design.
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