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java.lang.Objectcom.emarsys.ecommon.prefs.config.backend.NullConfigurationBackend
public final class NullConfigurationBackend
A ConfigurationBackend
that a priori contains no
ISetting
and does not support insertions.
Field Summary | |
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static ConfigurationBackend |
INSTANCE
|
Method Summary | |
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ISetting |
get(java.lang.String name)
Retrieves the ISetting with the passed name. |
java.util.List<ISetting> |
getSettings()
Retrieves all ISetting s from this backend. |
void |
set(ISetting setting)
Sets the passed setting which must not be null
in this configuration backend, if a setting with the given
name is already present it will be overridden. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final ConfigurationBackend INSTANCE
Method Detail |
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public ISetting get(java.lang.String name) throws java.lang.IllegalArgumentException
ConfigurationBackend
ISetting
with the passed name.
get
in interface ConfigurationBackend
ISetting
with the
passed name or null
if not present.
java.lang.IllegalArgumentException
- - if the passed name is
null
.com.emarsys.core.setting.backend.ConfigurationBackend#get(java.lang.String)
public java.util.List<ISetting> getSettings()
ConfigurationBackend
Retrieves all ISetting
s from this backend.
What exactly "all" means in the context of the concrete
ConfigurationBackend
is up to the implementation.
For instance the List
may or may not contain
default values or fallbacked ISetting
s or might
even return a cached list.
The only requirement for this method is to be logically in
synch with ConfigurationBackend.get(String)
and ConfigurationBackend.set(ISetting)
.
Thus if a Setting is inserted/updated/deleted and nothing
is changed in the meantime the next call to
ConfigurationBackend.getSettings()
has to reflect the changes made.
getSettings
in interface ConfigurationBackend
List
of ISetting
s,
never null
.com.emarsys.core.setting.backend.ConfigurationBackend#getSettings()
public void set(ISetting setting) throws java.lang.UnsupportedOperationException
ConfigurationBackend
null
in this configuration backend, if a setting with the given
name is already present it will be overridden.
The next call to ConfigurationBackend.get(String)
with the passed
setting's name will return the passed setting.
set
in interface ConfigurationBackend
java.lang.UnsupportedOperationException
com.emarsys.core.setting.backend.ConfigurationBackend#set(ISetting)
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