edu.ucsb.nceas.metacat

## Class QueryResultTableBuilder

- java.lang.Object
- - java.util.TimerTask
  - - edu.ucsb.nceas.metacat.QueryResultTableBuilder

- All Implemented Interfaces:
    java.lang.Runnable

      public class QueryResultTableBuilder
      extends java.util.TimerTask

  QueryResutlTableBuilder is class to build xml_queryresult table during metacat initialization. xml_querytable is a db table to store query returnfiled value. It is a cache of resultset and peformance optimization approach to replace xml_index and xml_node tables. In metacat 1.8.0, xml_queryresult table is built during the first time of query hitting metacat. So first time search will take longer time since this search involves xml_index and xml_node tables. In order to decrease the first query search time, this class will build the xml_querytable during the metacat intialization base on some metacat common clients' query , e.g. kepler, morpho, esa, knb, nceas, sanparks' regestiry.

- - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `run()` Builds the result table base on the given docid list and returnfields

    - ### Methods inherited from class java.util.TimerTask

      `cancel, scheduledExecutionTime`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Method Detail

    - #### run

          public void run()

      Builds the result table base on the given docid list and returnfields
      Specified by:
        `run` in interface `java.lang.Runnable`
      Specified by:
        `run` in class `java.util.TimerTask`

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