// SampleJavaStore.java

package sample;

import com.elixirtech.data2.DataException;
import com.elixirtech.data2.DataGroup;
import com.elixirtech.data2.DataListener;
import com.elixirtech.data2.DataRecord;
import com.elixirtech.data2.IDataSource;

/**
 * In order to implement a custom DataStore you need to implement
 * the DataListener interface. This interface will be called from 
 * the Data engine to supply records. For example, if there are 
 * three records then you might receive:
 * <pre>
 * startData
 * processRecord 1
 * processRecord 2
 * processRecord 3
 * endData
 * </pre>
 * If the data is grouped, you might receive:
 * <pre>
 * startData
 * startGroup 1
 * processRecord 1
 * processRecord 2
 * endGroup 1
 * startGroup 2
 * processRecord 3
 * endGroup 2
 * endData
 * </pre>
 * Calls to startGroup and endGroup may be nested depending on the 
 * number of fields that are grouped.
 */
public class SampleJavaStore implements DataListener
{

	/**
	 * This method is invoked when the data is ready to be sent
	 * @param The datasource that is supplying the data.
	 */
	public void startData(IDataSource src) throws DataException
	{
		System.out.println("start data");
	}

	/**
	 * This method is invoked whenever a new group of records
	 * is about to begin.
	 * @param group The group that is about to begin
	 */
	public void startGroup(DataGroup group) throws DataException
	{
		System.out.println("start group " + group.getLevel() + " : " + group.getName());		
	}

	/**
	 * This method is called once for each record sent by the datasource.
	 * @param record The record to be processed
	 * @return True to continue processing records, false to terminate
	 */
	public boolean processRecord(DataRecord record) throws DataException
	{
		Object[] data = record.getData();
		for (int i=0;i<data.length;i++)
		{
			System.out.print(String.valueOf(data[i])+"\t");
		}
		System.out.println();
		return true;
	}

	/**
	 * This method is invoked whenever a group of records
	 * is about to end. This call is symmetrical with startGroup
	 * @param group The group that is about to begin
	 */
	public void endGroup(DataGroup group) throws DataException
	{
		System.out.println("end group " + group.getLevel() + " : " + group.getName());		
	}

	/**
	 * This method is invoked when the last record has been sent.
	 * This call is symmetrical with startData.
	 * @param The datasource that supplied the data.
	 */
	public void endData(IDataSource src) throws DataException
	{
		System.out.println("end data");		
	}
}

// SampleJavaStore.java