org.pentaho.di.trans.steps.databaselookup

Class DefaultCache

java.lang.Object

org.pentaho.di.trans.steps.databaselookup.DefaultCache

All Implemented Interfaces:

DatabaseLookupData.Cache

public class DefaultCache
extends Object
implements DatabaseLookupData.Cache

Old code, copied from DatabaseLookup

Author:

Andrey Khayrutdinov

Method Summary

Modifier and Type	Method and Description
Object[]	getRowFromCache(RowMetaInterface lookupMeta, Object[] lookupRow) Returns the very first data row that matches all conditions or null if none has been found.
static DefaultCache	newCache(DatabaseLookupData data, int cacheSize)
void	storeRowInCache(DatabaseLookupMeta meta, RowMetaInterface lookupMeta, Object[] lookupRow, Object[] add) Saved add as data row and lookupRow as a key for searching it.

Methods inherited from class java.lang.Object

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

Method Detail

newCache

public static DefaultCache newCache(DatabaseLookupData data,
                                    int cacheSize)

getRowFromCache

public Object[] getRowFromCache(RowMetaInterface lookupMeta,
                                Object[] lookupRow)
                         throws KettleException

Description copied from interface: DatabaseLookupData.Cache

Returns the very first data row that matches all conditions or null if none has been found. Note, cache should keep the order in which elements were put into it.

Specified by:

getRowFromCache in interface DatabaseLookupData.Cache

Parameters:

lookupMeta - meta object for dealing with lookupRow

lookupRow - tuple containing values for comparison

Returns:

first matching data row or null

Throws:

KettleException

storeRowInCache

public void storeRowInCache(DatabaseLookupMeta meta,
                            RowMetaInterface lookupMeta,
                            Object[] lookupRow,
                            Object[] add)

Description copied from interface: DatabaseLookupData.Cache

Saved add as data row and lookupRow as a key for searching it.

Specified by:

storeRowInCache in interface DatabaseLookupData.Cache

Parameters:

meta - step's meta

lookupMeta - lookupRow's meta

lookupRow - tuple of keys

add - tuple of data