Package com.espertech.esper.common.client.fireandforget

Interface EPFireAndForgetPreparedQuery

public interface EPFireAndForgetPreparedQuery
Interface for a prepared on-demand query that can be executed multiple times.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    close()
    Releases resources.
    EPFireAndForgetQueryResult
    execute()
    Execute the prepared query returning query results.
    EPFireAndForgetQueryResult
    execute(ContextPartitionSelector[] contextPartitionSelectors)
    For use with named windows that have a context declared and that may therefore have multiple context partitions, allows to target context partitions for query execution selectively.
    EventType
    getEventType()
    Returns the event type, representing the columns of the select-clause.

  • Method Details

    • execute

      EPFireAndForgetQueryResult execute()
      Execute the prepared query returning query results.
      Returns:
      query result

    • execute

      EPFireAndForgetQueryResult execute(ContextPartitionSelector[] contextPartitionSelectors)
      For use with named windows that have a context declared and that may therefore have multiple context partitions, allows to target context partitions for query execution selectively.
      Parameters:
      contextPartitionSelectors - selects context partitions to consider
      Returns:
      query result

    • getEventType

      EventType getEventType()
      Returns the event type, representing the columns of the select-clause.
      Returns:
      event type

    • close

      void close()
      Releases resources.

      Required for use with fire-and-forget queries that use SQL queries i.e. "from SQL:db [query]". Optional for all other EPL queries.