Package org.pentaho.di.trans.steps.databaselookup

Interface DatabaseLookupData.Cache

All Known Implementing Classes:
DefaultCache, ReadAllCache
Enclosing class:
DatabaseLookupData
public static interface DatabaseLookupData.Cache
Cache for DatabaseLookup step.

  • Method Summary

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

  • Method Details

    • getRowFromCache

      Object[] getRowFromCache(org.pentaho.di.core.row.RowMetaInterface lookupMeta, Object[] lookupRow) throws org.pentaho.di.core.exception.KettleException
      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.
      Parameters:
      lookupMeta - meta object for dealing with lookupRow
      lookupRow - tuple containing values for comparison
      Returns:
      first matching data row or null
      Throws:
      org.pentaho.di.core.exception.KettleException

    • storeRowInCache

      void storeRowInCache(DatabaseLookupMeta meta, org.pentaho.di.core.row.RowMetaInterface lookupMeta, Object[] lookupRow, Object[] add)
      Saved add as data row and lookupRow as a key for searching it.
      Parameters:
      meta - step's meta
      lookupMeta - lookupRow's meta
      lookupRow - tuple of keys
      add - tuple of data