Package com.mapr.kvstore

Interface KvTable<T>

All Known Implementing Classes:
HashedStringKvStore, InMemoryByteStringKvTable, InMemoryKvTable, KvStore
public interface KvTable<T>

  • Method Details

    • open

      int open(String name)
      Initializes in-memory state of the table, such as setting key type (where necessary).
      Parameters:
      name - name of the key-value table to be initialized
      Returns:

    • close

      void close()

    • lookup

      byte[] lookup(T keyValue)

    • lookup

      byte[] lookup(T keyValue, boolean allowStaleRead)

    • exists

      boolean exists(T keyValue)
      Cognate of lookup(Object, boolean), this function checks for the presence of an entry with a specific key.
      Parameters:
      keyValue -
      Returns:

    • getTableName

      String getTableName()

    • getLeftNearValue

      com.mapr.fs.proto.Fileserver.KvMsg getLeftNearValue(T key)

    • getRightNearValue

      com.mapr.fs.proto.Fileserver.KvMsg getRightNearValue(T key)

    • lookupNear

      com.mapr.fs.proto.Fileserver.KvstoreLookupNearResponse lookupNear(T key) throws KvStoreException
      Throws:
      KvStoreException

    • getMinKey

      com.mapr.fs.proto.Fileserver.KvStoreKey getMinKey()

    • getMaxKey

      com.mapr.fs.proto.Fileserver.KvStoreKey getMaxKey()

    • getKeyCnt

      int getKeyCnt()

    • getKvVersion

      long getKvVersion()

    • setVarKeyType

      void setVarKeyType(String type)

    • getKeyFromKvStoreKey

      T getKeyFromKvStoreKey(com.mapr.fs.proto.Fileserver.KvStoreKey key)

    • getScanner

      KvTableScanner getScanner(T startKey, T endKey, boolean keysOnly)

    • getScanner

      KvTableScanner getScanner(T startKey, boolean keysOnly)

    • getScanner

      KvTableScanner getScanner(boolean keysOnly)

    • setType

      void setType(int type)

    • getHashedStringScanner

      default KvTableScanner getHashedStringScanner()

    • lookupCollisionNr

      default long lookupCollisionNr()

    • isExistCollisionKey

      default boolean isExistCollisionKey()