org.apache.lens.client
Class LensStatement

java.lang.Object
  org.apache.lens.client.LensStatement

public class LensStatement
extends Object

Top level class which is used to execute lens queries.

Constructor Summary

LensStatement(LensConnection connection)
Instantiates a new lens statement.

Method Summary

boolean	closeResultSet() Close result set.
boolean	destroyPrepared(QueryPrepareHandle phandle) Destroy prepared.
void	execute(String sql, boolean waitForQueryToComplete, String queryName) Execute.
void	execute(String sql, String queryName) Execute.
QueryHandle	executeQuery(QueryPrepareHandle phandle, boolean waitForQueryToComplete, String queryName) Execute query.
QueryHandle	executeQuery(QueryPrepareHandle phandle, String queryName) Execute query.
QueryHandle	executeQuery(String sql, boolean waitForQueryToComplete, String queryName) Execute query.
QueryPlan	explainAndPrepare(String sql, String queryName) Explain and prepare.
QueryPlan	explainQuery(String sql) Explain query.
List<QueryPrepareHandle>	getAllPreparedQueries(String userName, String queryName, long fromDate, long toDate) Gets the all prepared queries.
List<QueryHandle>	getAllQueries(String state, String queryName, String user, long fromDate, long toDate) Gets the all queries.
LensPreparedQuery	getPreparedQuery(QueryPrepareHandle handle) Gets the prepared query.
LensQuery	getQuery()
LensQuery	getQuery(QueryHandle handle) Gets the query.
QueryResult	getResultSet()
QueryResult	getResultSet(LensQuery query) Gets the result set.
QueryResultSetMetadata	getResultSetMetaData()
QueryResultSetMetadata	getResultSetMetaData(LensQuery query) Gets the result set meta data.
QueryStatus	getStatus()
boolean	isIdle()
boolean	kill() Kill.
boolean	kill(LensQuery query) Kill.
QueryPrepareHandle	prepareQuery(String sql, String queryName) Prepare query.
boolean	wasQuerySuccessful() Was query successful.

Methods inherited from class java.lang.Object

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

Constructor Detail

LensStatement

public LensStatement(LensConnection connection)

Instantiates a new lens statement.

Parameters:

connection - the connection

Method Detail

execute

public void execute(String sql,
                    boolean waitForQueryToComplete,
                    String queryName)

Execute.

Parameters:

sql - the sql

waitForQueryToComplete - the wait for query to complete

queryName - the query name

execute

public void execute(String sql,
                    String queryName)

Execute.

Parameters:

sql - the sql

queryName - the query name

executeQuery

public QueryHandle executeQuery(String sql,
                                boolean waitForQueryToComplete,
                                String queryName)

Execute query.

Parameters:

sql - the sql

waitForQueryToComplete - the wait for query to complete

queryName - the query name

Returns:

the query handle

executeQuery

public QueryHandle executeQuery(QueryPrepareHandle phandle,
                                boolean waitForQueryToComplete,
                                String queryName)

Execute query.

Parameters:

phandle - the phandle

waitForQueryToComplete - the wait for query to complete

queryName - the query name

Returns:

the query handle

prepareQuery

public QueryPrepareHandle prepareQuery(String sql,
                                       String queryName)

Prepare query.

Parameters:

sql - the sql

queryName - the query name

Returns:

the query prepare handle

explainAndPrepare

public QueryPlan explainAndPrepare(String sql,
                                   String queryName)

Explain and prepare.

Parameters:

sql - the sql

queryName - the query name

Returns:

the query plan

getQuery

public LensQuery getQuery(QueryHandle handle)

Gets the query.

Parameters:

handle - the handle

Returns:

the query

getPreparedQuery

public LensPreparedQuery getPreparedQuery(QueryPrepareHandle handle)

Gets the prepared query.

Parameters:

handle - the handle

Returns:

the prepared query

executeQuery

public QueryHandle executeQuery(QueryPrepareHandle phandle,
                                String queryName)

Execute query.

Parameters:

phandle - the phandle

queryName - the query name

Returns:

the query handle

explainQuery

public QueryPlan explainQuery(String sql)

Explain query.

Parameters:

sql - the sql

Returns:

the query plan

getAllQueries

public List<QueryHandle> getAllQueries(String state,
                                       String queryName,
                                       String user,
                                       long fromDate,
                                       long toDate)

Gets the all queries.

Parameters:

state - the state

queryName - the query name

user - the user

fromDate - the from date

toDate - the to date

Returns:

the all queries

getAllPreparedQueries

public List<QueryPrepareHandle> getAllPreparedQueries(String userName,
                                                      String queryName,
                                                      long fromDate,
                                                      long toDate)

Gets the all prepared queries.

Parameters:

userName - the user name

queryName - the query name

fromDate - the from date

toDate - the to date

Returns:

the all prepared queries

getResultSetMetaData

public QueryResultSetMetadata getResultSetMetaData()

getResultSetMetaData

public QueryResultSetMetadata getResultSetMetaData(LensQuery query)

Gets the result set meta data.

Parameters:

query - the query

Returns:

the result set meta data

getResultSet

public QueryResult getResultSet()

getResultSet

public QueryResult getResultSet(LensQuery query)

Gets the result set.

Parameters:

query - the query

Returns:

the result set

kill

public boolean kill()

Kill.

Returns:

true, if successful

kill

public boolean kill(LensQuery query)

Kill.

Parameters:

query - the query

Returns:

true, if successful

closeResultSet

public boolean closeResultSet()

Close result set.

Returns:

true, if successful

destroyPrepared

public boolean destroyPrepared(QueryPrepareHandle phandle)

Destroy prepared.

Parameters:

phandle - the phandle

Returns:

true, if successful

isIdle

public boolean isIdle()

wasQuerySuccessful

public boolean wasQuerySuccessful()

Was query successful.

Returns:

true, if successful

getStatus

public QueryStatus getStatus()

getQuery

public LensQuery getQuery()