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Tip of the Day
Language: Java
Expertise: Advanced
Apr 3, 2000

WEBINAR:

On-Demand

Building the Right Environment to Support AI, Machine Learning and Deep Learning


A Better Way to Retrieve Row and Column Data

Instead of creating a GridControl to retrieve row and column data from a table into a hash table, use a variant, as shown:
 
variant = new Variant();
for (row2get=0;
     row2get < queryDataSet1.getColumnCount();
     row2get++) {
  for (column2get=0;
       column2get < queryDataSet1.getColumnCount();
       column2get++) {
         queryDataSet1.getVariant(int row2get, 
           int column2get,variant);
         String bean = (String)variant;
         HashTable.put("columnName", 
           new String(bean));
    }
}
You can now cast the data from the variant object to the appropriate type to retrieve the information. This is particularly handy when serializing an object created from a database, since you can ask for the data by column name. You can also use "tiered hash tables" to capture master-detail relationships.
Manoj K.
 
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