Package weka.core.metastore

Interface MetaStore

  • All Known Implementing Classes:
    XMLFileBasedMetaStore
    public interface MetaStore
    Interface for metastore implementations. The metastore is a simple storage place that can be used, as an example, for storing named configuration settings (e.g. general application settings, reusable database connections etc.).
    Version:
    $Revision: 11805 $
    Author:
    Mark Hall (mhall{[at]}pentaho{[dot]}com)

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      void createStore​(java.lang.String storeName)
      Create a named store
      java.lang.Object getEntry​(java.lang.String storeName, java.lang.String name, java.lang.Class<?> clazz)
      Get a named entry from the store
      java.util.Set<java.lang.String> listMetaStoreEntries​(java.lang.String storeName)
      Get a list of all entries in a named store
      java.util.Set<java.lang.String> listMetaStoreEntries​(java.lang.String storeName, java.lang.String prefix)
      Get a list of all named entries starting with the given prefix
      java.util.Set<java.lang.String> listMetaStores()
      Get a list of all named meta stores
      void storeEntry​(java.lang.String storeName, java.lang.String name, java.lang.Object toStore)
      Store a named entry

    • Method Detail

      • listMetaStores

        java.util.Set<java.lang.String> listMetaStores()
                                        throws java.io.IOException
        Get a list of all named meta stores
        Returns:
        a list of meta stores
        Throws:
        java.io.IOException - if a problem occurs

      • listMetaStoreEntries

        java.util.Set<java.lang.String> listMetaStoreEntries​(java.lang.String storeName)
                                              throws java.io.IOException
        Get a list of all entries in a named store
        Parameters:
        storeName - the name of the store to get entries for
        Returns:
        a list of all entries in the named store
        Throws:
        java.io.IOException - if a problem occurs

      • listMetaStoreEntries

        java.util.Set<java.lang.String> listMetaStoreEntries​(java.lang.String storeName,
                                                     java.lang.String prefix)
                                              throws java.io.IOException
        Get a list of all named entries starting with the given prefix
        Parameters:
        storeName - the name of the store to get entries for
        prefix - the prefix with which to search for entries
        Returns:
        a list of entries
        Throws:
        java.io.IOException - if a problem occurs

      • createStore

        void createStore​(java.lang.String storeName)
          throws java.io.IOException
        Create a named store
        Parameters:
        storeName - the name of the store to create
        Throws:
        java.io.IOException - if a problem occurs

      • getEntry

        java.lang.Object getEntry​(java.lang.String storeName,
                          java.lang.String name,
                          java.lang.Class<?> clazz)
                   throws java.io.IOException
        Get a named entry from the store
        Parameters:
        storeName - the name of the store to use
        name - the full name of the entry to retrieve
        clazz - the expected class of the entry when deserialized
        Returns:
        the deserialized entry or null if the name does not exist in the store
        Throws:
        java.io.IOException - if the deserialized entry does not match the expected class

      • storeEntry

        void storeEntry​(java.lang.String storeName,
                java.lang.String name,
                java.lang.Object toStore)
         throws java.io.IOException
        Store a named entry
        Parameters:
        storeName - the name of the store to use
        name - the full name of the entry to store
        toStore - a beans compliant object to store
        Throws:
        java.io.IOException - if a problem occurs