Class JoinsExamples.RecJoinSet

  • Enclosing class:
    JoinsExamples
    public static class JoinsExamples.RecJoinSet
extends java.lang.Object
    This represents a joined set of records. In this example we show how to update a parent record and its associated child records as a unit using transactions. We use objects of this class to represent one of these joined set of records.

    • Constructor Summary

      Constructors 
      Constructor Description
      RecJoinSet()
      Create an empty Joined set of records.
      RecJoinSet​(java.lang.String parent_tbl, com.netrics.likeit.NetricsRecord parent_rec)
      Creat a joined set of records for the given parent record.
      RecJoinSet​(java.lang.String parent_tbl, com.netrics.likeit.NetricsRecord parent_rec, java.lang.String[] child_tbl_names, com.netrics.likeit.NetricsRecord[][] child_tbl_recs)
      Creat an initialized Joined set of records.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      com.netrics.likeit.NetricsRecord[] getChildRecs​(java.lang.String child_tbl)
      Get an array of the child records for a particular child table.
      java.lang.String[] getChildTbls()
      Get an array of the child tables in this joined set.
      com.netrics.likeit.NetricsRecord getParentRec()
      Get the parent record.
      java.lang.String getParentTbl()
      Get the name of the parent table.
      void setChildRecords​(java.lang.String child_tbl, com.netrics.likeit.NetricsRecord[] child_recs)
      Set the list of records for a child table.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • RecJoinSet

        public RecJoinSet()
        Create an empty Joined set of records.

      • RecJoinSet

        public RecJoinSet​(java.lang.String parent_tbl,
                  com.netrics.likeit.NetricsRecord parent_rec)
        Creat a joined set of records for the given parent record. Use setChildRecords method to add the child records.
        Parameters:
        parent_tbl - the name of the parent table of this join set.
        parent_rec - the parent record of this join set.

      • RecJoinSet

        public RecJoinSet​(java.lang.String parent_tbl,
                  com.netrics.likeit.NetricsRecord parent_rec,
                  java.lang.String[] child_tbl_names,
                  com.netrics.likeit.NetricsRecord[][] child_tbl_recs)
        Creat an initialized Joined set of records. This creates a fully initialized joined set of records.
        Parameters:
        parent_tbl - the name of the parent table of this join set.
        parent_rec - the parent record of this join set.
        child_tbl_names - an array of the child table names.
        child_tbl_recs - a two dimensional array of records, the first dimension corresponds to child_tbl_names, the second dimension is the array of records for that child table. I.e. child_tbl_records[i] is an array of records for child table: child_tbl_names[i].

    • Method Detail

      • setChildRecords

        public void setChildRecords​(java.lang.String child_tbl,
                            com.netrics.likeit.NetricsRecord[] child_recs)
        Set the list of records for a child table. If no records exist for the given child table this adds it as a new child table and sets this list of records to a shallow copy of the given list of records. If the table already exists in this set as a child table the existing list of child records is replaced in its entirety by a shallow copy of the new list.
        Parameters:
        child_tbl - the name of the child table
        child_recs - an array of child records.

      • getParentTbl

        public java.lang.String getParentTbl()
        Get the name of the parent table.
        Returns:
        the name of teh parent table.

      • getParentRec

        public com.netrics.likeit.NetricsRecord getParentRec()
        Get the parent record.
        Returns:
        the parent record.

      • getChildTbls

        public java.lang.String[] getChildTbls()
        Get an array of the child tables in this joined set.
        Returns:
        an array of child tables.

      • getChildRecs

        public com.netrics.likeit.NetricsRecord[] getChildRecs​(java.lang.String child_tbl)
        Get an array of the child records for a particular child table.
        Parameters:
        child_tbl - child table to get records from.
        Returns:
        an array of child records.