Package com.google.refine

Class LookupCacheManager

java.lang.Object

com.google.refine.LookupCacheManager

public class LookupCacheManager
extends Object

Manage the cache of project's lookups.

Author:

Lu Liu

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LookupCacheManager.ProjectLookup

Field Summary

Fields

Modifier and Type	Field	Description
protected final Map<String,LookupCacheManager.ProjectLookup>	_lookups

Constructor Summary

Constructors

Constructor	Description
LookupCacheManager()

Method Summary

Modifier and Type	Method	Description
protected void	computeLookup(LookupCacheManager.ProjectLookup lookup)
void	flushLookupsInvolvingProject(long projectID)
void	flushLookupsInvolvingProjectColumn(long projectID, String columnName)
LookupCacheManager.ProjectLookup	getLookup(long targetProject, String targetColumn)	Computes the ProjectLookup based on combination key, returns the cached one from the HashMap if already computed.

Methods inherited from class java.lang.Object

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

Field Details

_lookups

protected final Map<String,LookupCacheManager.ProjectLookup> _lookups

Constructor Details

LookupCacheManager

public LookupCacheManager()

Method Details

getLookup

public LookupCacheManager.ProjectLookup getLookup(long targetProject,
 String targetColumn)
                                           throws LookupException

Computes the ProjectLookup based on combination key, returns the cached one from the HashMap if already computed.

Parameters:

targetProject - the project to look up

targetColumn - the column of the target project to look up

Returns:

a LookupCacheManager.ProjectLookup instance of the lookup result

Throws:

LookupException

flushLookupsInvolvingProject

public void flushLookupsInvolvingProject(long projectID)

flushLookupsInvolvingProjectColumn

public void flushLookupsInvolvingProjectColumn(long projectID,
 String columnName)

computeLookup

protected void computeLookup(LookupCacheManager.ProjectLookup lookup)
                      throws LookupException

Throws:

LookupException