org.teiid.translator.simpledb

Class SimpleDBQueryExecution

java.lang.Object

org.teiid.translator.simpledb.SimpleDBQueryExecution

All Implemented Interfaces:

Execution, ResultSetExecution

Direct Known Subclasses:

SimpleDBDirectQueryExecution

public class SimpleDBQueryExecution
extends Object
implements ResultSetExecution

Field Summary

Fields

Modifier and Type	Field and Description
protected SimpleDBConnection	connection
protected Iterator<com.amazonaws.services.simpledb.model.Item>	listIterator

Constructor Summary

Constructors

Constructor and Description
SimpleDBQueryExecution(Select command, ExecutionContext executionContext, RuntimeMetadata metadata, SimpleDBConnection connection)

Method Summary

Modifier and Type	Method and Description
protected List<?>	buildRow(com.amazonaws.services.simpledb.model.Item item)
void	cancel() Cancels the execution abnormally.
void	close() Terminates the execution normally.
protected Map<String,List<String>>	createAttributeMap(List<com.amazonaws.services.simpledb.model.Attribute> attributes)
void	execute() Execute the associated command.
protected void	executeDirect(String sql, String next)
protected String	getSQL()
List<?>	next() Retrieves the next row of the resultset.

Methods inherited from class java.lang.Object

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

Field Detail

connection

protected SimpleDBConnection connection

listIterator

protected Iterator<com.amazonaws.services.simpledb.model.Item> listIterator

Constructor Detail

SimpleDBQueryExecution

public SimpleDBQueryExecution(Select command,
                              ExecutionContext executionContext,
                              RuntimeMetadata metadata,
                              SimpleDBConnection connection)
                       throws TranslatorException

Throws:

TranslatorException

Method Detail

execute

public void execute()
             throws TranslatorException

Description copied from interface: Execution

Execute the associated command. Results will be retrieved through a specific sub-interface call.

Specified by:

execute in interface Execution

Throws:

TranslatorException

getSQL

protected String getSQL()

executeDirect

protected void executeDirect(String sql,
                             String next)
                      throws TranslatorException

Throws:

TranslatorException

close

public void close()

Description copied from interface: Execution

Terminates the execution normally.

Specified by:

close in interface Execution

cancel

public void cancel()
            throws TranslatorException

Description copied from interface: Execution

Cancels the execution abnormally. This will happen via a different thread from the one performing the execution, so should be expected to happen in a multi-threaded scenario.

Specified by:

cancel in interface Execution

Throws:

TranslatorException

next

public List<?> next()
             throws TranslatorException,
                    DataNotAvailableException

Description copied from interface: ResultSetExecution

Retrieves the next row of the resultset.

Specified by:

next in interface ResultSetExecution

Returns:

the next row or null indicating that there are no more results

Throws:

TranslatorException

DataNotAvailableException

buildRow

protected List<?> buildRow(com.amazonaws.services.simpledb.model.Item item)
                    throws TranslatorException

Throws:

TranslatorException

createAttributeMap

protected Map<String,List<String>> createAttributeMap(List<com.amazonaws.services.simpledb.model.Attribute> attributes)