org.teiid.translator.mongodb

Class MongoDBDirectQueryExecution

java.lang.Object

org.teiid.translator.mongodb.MongoDBBaseExecution

org.teiid.translator.mongodb.MongoDBDirectQueryExecution

All Implemented Interfaces:

org.teiid.translator.Execution, org.teiid.translator.ProcedureExecution, org.teiid.translator.ResultSetExecution

public class MongoDBDirectQueryExecution
extends MongoDBBaseExecution
implements org.teiid.translator.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<org.teiid.language.Argument> arguments, org.teiid.language.Command cmd, org.teiid.translator.ExecutionContext executionContext, org.teiid.metadata.RuntimeMetadata metadata, org.teiid.mongodb.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<org.teiid.language.Argument> arguments,
                                   org.teiid.language.Command cmd,
                                   org.teiid.translator.ExecutionContext executionContext,
                                   org.teiid.metadata.RuntimeMetadata metadata,
                                   org.teiid.mongodb.MongoDBConnection connection,
                                   String nativeQuery,
                                   boolean returnsArray,
                                   MongoDBExecutionFactory ef)

Method Detail

execute

public void execute()
             throws org.teiid.translator.TranslatorException

Specified by:

execute in interface org.teiid.translator.Execution

Throws:

org.teiid.translator.TranslatorException

getOutputParameterValues

public List<?> getOutputParameterValues()
                                 throws org.teiid.translator.TranslatorException

Specified by:

getOutputParameterValues in interface org.teiid.translator.ProcedureExecution

Throws:

org.teiid.translator.TranslatorException

next

public List<?> next()
             throws org.teiid.translator.TranslatorException,
                    org.teiid.translator.DataNotAvailableException

Specified by:

next in interface org.teiid.translator.ResultSetExecution

Throws:

org.teiid.translator.TranslatorException

org.teiid.translator.DataNotAvailableException

nextRow

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

Throws:

org.teiid.translator.TranslatorException

org.teiid.translator.DataNotAvailableException

close

public void close()

Specified by:

close in interface org.teiid.translator.Execution

cancel

public void cancel()
            throws org.teiid.translator.TranslatorException

Specified by:

cancel in interface org.teiid.translator.Execution

Throws:

org.teiid.translator.TranslatorException