oracle.adfnmc.metadata
Class MetaDataCache

java.lang.Object
  oracle.adfnmc.cache.SimpleCache
      oracle.adfnmc.metadata.MetaDataCache

public class MetaDataCache
extends SimpleCache

Field Summary

protected Map	crossRef
protected java.lang.String	crossRefId
static java.lang.String	SINGLETON

Fields inherited from class oracle.adfnmc.cache.SimpleCache

access, cddr, config, data, MAX_COUNT, MAX_IDLE, provider, UNTYPED

Constructor Summary

MetaDataCache(CacheProvider cacheProvider, java.lang.String crossRefAttribute, java.lang.Object cddr)
Constructor for the MetaDataCache.

Method Summary

void	addCrossRef(java.lang.String id, java.lang.String loc) Add a cross reference so the data can also be accessed from this id.
XmlAnyDefinition	getById(java.lang.String id) Get the metadata by it's id (cross referenced index).
XmlAnyDefinition	getByLocation(java.lang.String loc) Get the metadata by it's location (aka primary index).
java.lang.String[]	getIds()
void	put(java.lang.Object key, java.lang.Object value) Generic version called from the underlying cache.
void	put(java.lang.String loc, XmlAnyDefinition value) Put the metadata into the cache

Methods inherited from class oracle.adfnmc.cache.SimpleCache

dumpCache, get, getConfiguration, keySet, log, log, put, reset, setConfiguration, size

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SINGLETON

public static final java.lang.String SINGLETON

See Also:

Constant Field Values

crossRef

protected Map crossRef

crossRefId

protected java.lang.String crossRefId

Constructor Detail

MetaDataCache

public MetaDataCache(CacheProvider cacheProvider,
                     java.lang.String crossRefAttribute,
                     java.lang.Object cddr)

Constructor for the MetaDataCache. A cache used solely to cache a paticular type of metadata (XmlAnyDefinitions) to avoid multiple disk reads.

Parameters:

cacheProvider - (implementer of the fetch method)

cddr - (or client data direct reference) passed to the provider on fetch

Method Detail

addCrossRef

public void addCrossRef(java.lang.String id,
                        java.lang.String loc)

Add a cross reference so the data can also be accessed from this id.

Parameters:

id - is the new cross reference

loc - is the exiting reference by the underlying cache

getById

public XmlAnyDefinition getById(java.lang.String id)

Get the metadata by it's id (cross referenced index).

Parameters:

id - found in the outter stanza of the XML

Returns:

the XmlAnyDefinition found in the cache or null if it is not in the cache

getIds

public java.lang.String[] getIds()

getByLocation

public XmlAnyDefinition getByLocation(java.lang.String loc)

Get the metadata by it's location (aka primary index).

Parameters:

loc - is the location where the file actually exists on disk

Returns:

the XmlAnyDefinition found in the cache or null if it can not be fetched.

put

public void put(java.lang.String loc,
                XmlAnyDefinition value)

Put the metadata into the cache

Parameters:

loc - where the metadata resides on the disk (primary index)

value - the metadata itself

put

public void put(java.lang.Object key,
                java.lang.Object value)

Generic version called from the underlying cache.

Parameters:

key - is the loc

value - is the metadata