| java.lang.Object | ||
| ↳ | sun.management.snmp.util.SnmpTableCache | |
| ↳ | sun.management.snmp.util.SnmpListTableCache | |
 Known Direct Subclasses
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Class Overview
This abstract class implements a weak cache for a table whose data
is obtained from a List.
NOTE: This class is not synchronized, subclasses must implement the appropriate synchronization whwn needed.
Summary
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From class
sun.management.snmp.util.SnmpTableCache
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The data for the entry corresponding to the given item.
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The index of the entry corresponding to the given item.
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Recompute cached data.
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Inherited Methods | |||||||||||
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From class
sun.management.snmp.util.SnmpTableCache
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From class
java.lang.Object
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Public Constructors
public SnmpListTableCache ()
Protected Methods
protected Object getData (Object context, List rawDatas, int rank, Object item)
The data for the entry corresponding to the given item.
This method is called by updateCachedDatas(Object, List).
Parameters
| context | The context passed to
updateCachedDatas(Object, List). |
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| rawDatas | Raw table datas passed to
updateCachedDatas(Object, List). |
| rank | Rank of the given item in the rawDatas list iterator. |
| item | The raw data object from which the entry data must be extracted. |
Returns
- By default item is returned.
protected abstract SnmpOid getIndex (Object context, List rawDatas, int rank, Object item)
The index of the entry corresponding to the given item.
This method is called by updateCachedDatas(Object, List).
The given item is expected to be always associated with
the same index.
Parameters
| context | The context passed to
updateCachedDatas(Object, List). |
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| rawDatas | Raw table datas passed to
updateCachedDatas(Object, List). |
| rank | Rank of the given item in the rawDatas list iterator. |
| item | The raw data object for which an index must be determined. |
protected SnmpCachedData updateCachedDatas (Object context, List rawDatas)
Recompute cached data.
Parameters
| context | A context object, valid during the duration of
of the call to this method, and that will be passed to
getIndex(Object, List, int, Object) and getData(Object, List, int, Object). This method is intended to be called by updateCachedDatas(Object). It is assumed that
the context is be allocated by before this method is called,
and released just after this method has returned.This class does not use the context object: it is a simple hook for subclassed. |
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| rawDatas | The table datas from which the cached data will be computed. |
Returns
- the computed cached data.