Package weka.core.metastore

Class XMLFileBasedMetaStore

  • All Implemented Interfaces:
    MetaStore
    public class XMLFileBasedMetaStore
extends java.lang.Object
implements MetaStore
    A simple default implementation of MetaStore that uses Weka's XML serialization mechanism to persist entries as XML files in ${WEKA_HOME}/wekaMetaStore
    Version:
    $Revision: 14281 $
    Author:
    Mark Hall (mhall{[at]}pentaho{[dot]}com)

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static java.lang.String DEFAULT_STORE_LOCATION
      The default location for the XML files

    • Method Summary

      All Methods Instance Methods Concrete 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

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • DEFAULT_STORE_LOCATION

        public static final java.lang.String DEFAULT_STORE_LOCATION
        The default location for the XML files

    • Constructor Detail

      • XMLFileBasedMetaStore

        public XMLFileBasedMetaStore()

    • Method Detail

      • listMetaStores

        public java.util.Set<java.lang.String> listMetaStores()
                                               throws java.io.IOException
        Description copied from interface: MetaStore
        Get a list of all named meta stores
        Specified by:
        listMetaStores in interface MetaStore
        Returns:
        a list of meta stores
        Throws:
        java.io.IOException - if a problem occurs

      • listMetaStoreEntries

        public java.util.Set<java.lang.String> listMetaStoreEntries​(java.lang.String storeName)
                                                     throws java.io.IOException
        Description copied from interface: MetaStore
        Get a list of all entries in a named store
        Specified by:
        listMetaStoreEntries in interface MetaStore
        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

        public java.util.Set<java.lang.String> listMetaStoreEntries​(java.lang.String storeName,
                                                            java.lang.String prefix)
                                                     throws java.io.IOException
        Description copied from interface: MetaStore
        Get a list of all named entries starting with the given prefix
        Specified by:
        listMetaStoreEntries in interface MetaStore
        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

      • getEntry

        public java.lang.Object getEntry​(java.lang.String storeName,
                                 java.lang.String name,
                                 java.lang.Class<?> clazz)
                          throws java.io.IOException
        Description copied from interface: MetaStore
        Get a named entry from the store
        Specified by:
        getEntry in interface MetaStore
        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

      • createStore

        public void createStore​(java.lang.String storeName)
                 throws java.io.IOException
        Description copied from interface: MetaStore
        Create a named store
        Specified by:
        createStore in interface MetaStore
        Parameters:
        storeName - the name of the store to create
        Throws:
        java.io.IOException - if a problem occurs

      • storeEntry

        public void storeEntry​(java.lang.String storeName,
                       java.lang.String name,
                       java.lang.Object toStore)
                throws java.io.IOException
        Description copied from interface: MetaStore
        Store a named entry
        Specified by:
        storeEntry in interface MetaStore
        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