org.teiid.translator.mongodb

Class MongoDBDirectQueryExecution

java.lang.Object

org.teiid.translator.mongodb.MongoDBBaseExecution

org.teiid.translator.mongodb.MongoDBDirectQueryExecution

All Implemented Interfaces:

Execution, ProcedureExecution, ResultSetExecution

public class MongoDBDirectQueryExecution
extends MongoDBBaseExecution
implements ProcedureExecution

This enables the Direct Query execution of the MongoDB queries. For that to happen the procedure invocation needs to be like {code} native('CollectionName;{$match : { \"CompanyName\" : \"A\"}};{$project : {\"CompanyName\", "userName}}', [param1, param2]) {code} the first parameter must be collection name, then the arguments must match the aggregation pipeline structure delimited by semi-colon (;) between each pipeline statement select x.* from TABLE(call native('city;{$match:{"city":"FREEDOM"}}')) t, xmltable('/city' PASSING JSONTOXML('city', cast(array_get(t.tuple, 1) as BLOB)) COLUMNS city string, state string) x select JSONTOXML('city', cast(array_get(t.tuple, 1) as BLOB)) as col from TABLE(call native('city;{$match:{"city":"FREEDOM"}}')) t;

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	returnsArray

Fields inherited from class org.teiid.translator.mongodb.MongoDBBaseExecution

connection, executionContext, metadata, mongoDB

Constructor Summary

Constructors

Constructor and Description
MongoDBDirectQueryExecution(List<Argument> arguments, Command cmd, ExecutionContext executionContext, RuntimeMetadata metadata, MongoDBConnection connection, String nativeQuery, boolean returnsArray, MongoDBExecutionFactory ef)

Method Summary

Modifier and Type	Method and Description
void	cancel()
void	close()
void	execute()
List<?>	getOutputParameterValues()
List<?>	next()
com.mongodb.DBObject	nextRow()

Methods inherited from class java.lang.Object

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

Field Detail

returnsArray

protected boolean returnsArray

Constructor Detail

MongoDBDirectQueryExecution

public MongoDBDirectQueryExecution(List<Argument> arguments,
                                   Command cmd,
                                   ExecutionContext executionContext,
                                   RuntimeMetadata metadata,
                                   MongoDBConnection connection,
                                   String nativeQuery,
                                   boolean returnsArray,
                                   MongoDBExecutionFactory ef)

Method Detail

execute

public void execute()
             throws TranslatorException

Specified by:

execute in interface Execution

Throws:

TranslatorException

getOutputParameterValues

public List<?> getOutputParameterValues()
                                 throws TranslatorException

Specified by:

getOutputParameterValues in interface ProcedureExecution

Throws:

TranslatorException

next

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

Specified by:

next in interface ResultSetExecution

Throws:

TranslatorException

DataNotAvailableException

nextRow

public com.mongodb.DBObject nextRow()
                             throws TranslatorException,
                                    DataNotAvailableException

Throws:

TranslatorException

DataNotAvailableException

close

public void close()

Specified by:

close in interface Execution

cancel

public void cancel()
            throws TranslatorException

Specified by:

cancel in interface Execution

Throws:

TranslatorException