org.openanzo.common.rdb.layout
Class ValueLayoutCacheProxy

java.lang.Object
  org.openanzo.common.rdb.layout.ValueLayoutCacheProxy

All Implemented Interfaces:

ILayoutCache<java.lang.String>, IValueLayout

public class ValueLayoutCacheProxy
extends java.lang.Object
implements IValueLayout, ILayoutCache<java.lang.String>

Wraps and caches data accessed by an IValueLayout object.

Author:

Joe Betz, Stephen Evanchik

Constructor Summary

ValueLayoutCacheProxy(IValueLayout base, java.util.Map<java.lang.Long,java.lang.String> byIdCache, java.util.Map<java.lang.String,java.lang.Long> byValueCache)
Create Cache Proxy for the given base layout.

Method Summary

void	batchAdd(java.util.Iterator<java.lang.String> iter) Doesn't cached added nodes
void	batchAddAndCache(java.util.Iterator<java.lang.String> iter) Add set of strings into this layout and cache their values
java.lang.String	cache(java.lang.Long id, java.lang.String value, java.lang.Long modifierId) Create object from provided ID and value and cache result
void	clearCache() Clear all cached objects and IDs
void	clearUncommittedCache() Clear any uncommitted cache entries
void	commitUncommittedCache() Commit any uncommitted cache entries
ClosableIterator<NodeSQL.FetchAllCommonValuesResult>	fetchAll() Doesn't cache fetched Nodes
java.lang.Long	fetchId(java.lang.String value) Fetch the ID for this value
java.lang.String	fetchValue(java.lang.Long id) Fetch the value for this ID
java.lang.String	getIfCached(java.lang.Long id) Get the Object for this ID, if already cached
java.lang.Long	getIfCached(java.lang.String value) Get the ID for this Object, if already cached
boolean	isCached(java.lang.Long id) Return true if an Object with this ID is already cached
boolean	isCached(java.lang.String value) Return true if a ID for this Object is already cached
java.lang.Long	store(java.lang.String value) Store String value

Methods inherited from class java.lang.Object

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

Constructor Detail

ValueLayoutCacheProxy

public ValueLayoutCacheProxy(IValueLayout base,
                             java.util.Map<java.lang.Long,java.lang.String> byIdCache,
                             java.util.Map<java.lang.String,java.lang.Long> byValueCache)

Create Cache Proxy for the given base layout.

Parameters:

base - Base layout to add caching layer onto

byIdCache - ID cache for this layout

byValueCache - Value cache for this layout

Method Detail

clearCache

public void clearCache()

Description copied from interface: ILayoutCache

Clear all cached objects and IDs

Specified by:

clearCache in interface ILayoutCache<java.lang.String>

commitUncommittedCache

public void commitUncommittedCache()

Description copied from interface: ILayoutCache

Commit any uncommitted cache entries

Specified by:

commitUncommittedCache in interface ILayoutCache<java.lang.String>

clearUncommittedCache

public void clearUncommittedCache()

Description copied from interface: ILayoutCache

Clear any uncommitted cache entries

Specified by:

clearUncommittedCache in interface ILayoutCache<java.lang.String>

cache

public java.lang.String cache(java.lang.Long id,
                              java.lang.String value,
                              java.lang.Long modifierId)

Description copied from interface: ILayoutCache

Create object from provided ID and value and cache result

Specified by:

cache in interface ILayoutCache<java.lang.String>

Parameters:

id - ID of node

value - String value of node

modifierId - modifierId for literals

Returns:

converted object for provided data

isCached

public boolean isCached(java.lang.String value)

Description copied from interface: ILayoutCache

Return true if a ID for this Object is already cached

Specified by:

isCached in interface ILayoutCache<java.lang.String>

Parameters:

value - object to check

Returns:

true if a ID for this Object is already cached

isCached

public boolean isCached(java.lang.Long id)

Description copied from interface: ILayoutCache

Return true if an Object with this ID is already cached

Specified by:

isCached in interface ILayoutCache<java.lang.String>

Parameters:

id - id to check

Returns:

true if an Object with this ID is already cached

getIfCached

public java.lang.Long getIfCached(java.lang.String value)

Description copied from interface: ILayoutCache

Get the ID for this Object, if already cached

Specified by:

getIfCached in interface ILayoutCache<java.lang.String>

Parameters:

value - object to find cached ID

Returns:

the ID for this Object, if already cached

getIfCached

public java.lang.String getIfCached(java.lang.Long id)

Description copied from interface: ILayoutCache

Get the Object for this ID, if already cached

Specified by:

getIfCached in interface ILayoutCache<java.lang.String>

Parameters:

id - id of Object to retrieve

Returns:

the Object for this ID, if already cached

fetchId

public java.lang.Long fetchId(java.lang.String value)

Description copied from interface: IValueLayout

Fetch the ID for this value

Specified by:

fetchId in interface IValueLayout

Parameters:

value - value to lookup

Returns:

ID of stored value

fetchValue

public java.lang.String fetchValue(java.lang.Long id)

Description copied from interface: IValueLayout

Fetch the value for this ID

Specified by:

fetchValue in interface IValueLayout

Parameters:

id - id to lookup

Returns:

the value for this ID

store

public java.lang.Long store(java.lang.String value)

Description copied from interface: IValueLayout

Store String value

Specified by:

store in interface IValueLayout

Parameters:

value - value to store

Returns:

ID of stored value

batchAdd

public void batchAdd(java.util.Iterator<java.lang.String> iter)

Doesn't cached added nodes

Specified by:

batchAdd in interface IValueLayout

Parameters:

iter - Set of strings to store

fetchAll

public ClosableIterator<NodeSQL.FetchAllCommonValuesResult> fetchAll()

Doesn't cache fetched Nodes

Specified by:

fetchAll in interface IValueLayout

Returns:

all values for this type

batchAddAndCache

public void batchAddAndCache(java.util.Iterator<java.lang.String> iter)

Add set of strings into this layout and cache their values

Parameters:

iter - set of strings to store and cache