Package com.alachisoft.ncache.runtime.datasourceprovider

Interface ReadThruProvider

  • All Superinterfaces:
    java.lang.AutoCloseable
    public interface ReadThruProvider
extends java.lang.AutoCloseable
    Contains methods used to read an object by its key from the master data source. Must be implemented by read-through components. ReadThruProvider is an interface that is need to be implemented in order to allow cache to read data from your data source.

    • Method Detail

      • init

        void init​(java.util.Map<java.lang.String,​java.lang.String> parameters,
          java.lang.String cacheId)
   throws java.lang.Exception
        Perform tasks like allocating resources or acquiring connections etc.
        Parameters:
        parameters - Startup parameters defined in the configuration.
        cacheId - Id of the Cache.
        Throws:
        java.lang.Exception

      • loadFromSource

        ProviderCacheItem loadFromSource​(java.lang.String key)
                          throws java.lang.Exception
        Responsible for loading the object from the data source. Key is passed as parameter.
        Parameters:
        key - key used to reference object.
        Returns:
        Provider Cache item present against the key.
        Throws:
        java.lang.Exception

      • loadFromSource

        java.util.Map<java.lang.String,​ProviderCacheItem> loadFromSource​(java.util.Collection<java.lang.String> keys)
                                                                throws java.lang.Exception
        Responsible for loading list of objects from the data source. Keys are passed as parameter.
        Parameters:
        keys - The collection of keys to be loaded from the data source.
        Returns:
        A map that contains keys and corresponding provider items.
        Throws:
        java.lang.Exception

      • loadDataStructureFromSource

        ProviderDataStructureItem loadDataStructureFromSource​(java.lang.String key,
                                                      DistributedDataStructureType distributedDataStructureType)
                                               throws java.lang.Exception
        Responsible for loading the Data Strucutre from the data source.
        Parameters:
        key - Key used to reference Data Structure.
        distributedDataStructureType - Type of collection.
        Returns:
        ProviderDataStructureItem present against the key.
        Throws:
        java.lang.Exception