org.apache.solr.handler.dataimport
Class DIHCacheSupport

java.lang.Object
  org.apache.solr.handler.dataimport.DIHCacheSupport

public class DIHCacheSupport
extends Object

Field Summary

static String	CACHE_DELETE_PRIOR_DATA If the cache supports persistent data, set to "true" to delete any prior persisted data before running the entity.
static String	CACHE_FOREIGN_KEY Specify the Foreign Key from the parent entity to join on.
static String	CACHE_IMPL Specify the class for the cache implementation
static String	CACHE_PRIMARY_KEY Specify the Primary Key field from this Entity to map the input records with
static String	CACHE_READ_ONLY If true, a pre-existing cache is re-opened for read-only access.

Constructor Summary

DIHCacheSupport(Context context, String cacheImplName)

Method Summary

void	destroyAll()
Map<String,Object>	getCacheData(Context context, String query, Iterator<Map<String,Object>> rowIterator)
protected Map<String,Object>	getFromRowCacheTransformed()
protected Map<String,Object>	getIdCacheData(Context context, String query, Iterator<Map<String,Object>> rowIterator) If the where clause is present the cache is sql Vs Map of key Vs List of Rows.
protected Map<String,Object>	getSimpleCacheData(Context context, String query, Iterator<Map<String,Object>> rowIterator) If where clause is not present the cache is a Map of query vs List of Rows.
void	initNewParent(Context context)
void	populateCache(String query, Iterator<Map<String,Object>> rowIterator) Get all the rows from the datasource for the given query and cache them

Methods inherited from class java.lang.Object

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

Field Detail

CACHE_IMPL

public static final String CACHE_IMPL

Specify the class for the cache implementation

See Also:

Constant Field Values

CACHE_DELETE_PRIOR_DATA

public static final String CACHE_DELETE_PRIOR_DATA

If the cache supports persistent data, set to "true" to delete any prior persisted data before running the entity.

See Also:

Constant Field Values

CACHE_FOREIGN_KEY

public static final String CACHE_FOREIGN_KEY

Specify the Foreign Key from the parent entity to join on. Use if the cache is on a child entity.

See Also:

Constant Field Values

CACHE_PRIMARY_KEY

public static final String CACHE_PRIMARY_KEY

Specify the Primary Key field from this Entity to map the input records with

See Also:

Constant Field Values

CACHE_READ_ONLY

public static final String CACHE_READ_ONLY

If true, a pre-existing cache is re-opened for read-only access.

See Also:

Constant Field Values

Constructor Detail

DIHCacheSupport

public DIHCacheSupport(Context context,
                       String cacheImplName)

Method Detail

initNewParent

public void initNewParent(Context context)

destroyAll

public void destroyAll()

populateCache

public void populateCache(String query,
                          Iterator<Map<String,Object>> rowIterator)

Get all the rows from the datasource for the given query and cache them

getCacheData

public Map<String,Object> getCacheData(Context context,
                                       String query,
                                       Iterator<Map<String,Object>> rowIterator)

getIdCacheData

protected Map<String,Object> getIdCacheData(Context context,
                                            String query,
                                            Iterator<Map<String,Object>> rowIterator)

If the where clause is present the cache is sql Vs Map of key Vs List of Rows.

Parameters:

query - the query string for which cached data is to be returned

Returns:

the cached row corresponding to the given query after all variables have been resolved

getSimpleCacheData

protected Map<String,Object> getSimpleCacheData(Context context,
                                                String query,
                                                Iterator<Map<String,Object>> rowIterator)

If where clause is not present the cache is a Map of query vs List of Rows.

Parameters:

query - string for which cached row is to be returned

Returns:

the cached row corresponding to the given query

getFromRowCacheTransformed

protected Map<String,Object> getFromRowCacheTransformed()