com.sun.mdm.index.query
Class QueryManagerImpl

java.lang.Object
  com.sun.mdm.index.query.QueryManagerImpl

All Implemented Interfaces:

QueryManager

public class QueryManagerImpl

extends java.lang.Object

implements QueryManager

Impl class for QueryManager

Constructor Summary

QueryManagerImpl()
Creates a new instance of QueryManagerImpl

Method Summary

(package private) static void	decrementConnectionCounter()
QueryResults	execute(java.sql.Connection con, QueryObject qobject) This method will execute the query(s) specified in QueryObject but will not use Assembling information.
QueryResults	execute(QueryObject qobject) This method will execute the query(s) specified in QueryObject but will not use Assembling information.
QMIterator	executeAssemble(java.sql.Connection con, QueryObject qobject) This method will execute the query(s) specified in QueryObject and also use FactoryEngine for creating composite objects.
QMIterator	executeAssemble(QueryObject qobject) This method will execute the query(s) specified in QueryObject and also use FactoryEngine for creating composite objects.
(package private) static int	getConnectionCounter()
(package private) static void	incrementConnectionCounter()
void	prepare(QueryObject qobject) This method will prepare the QueryObject without executing the query and will put in the cache pool.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryManagerImpl

public QueryManagerImpl()

Creates a new instance of QueryManagerImpl

Method Detail

decrementConnectionCounter

static void decrementConnectionCounter()

execute

public QueryResults execute(java.sql.Connection con,
                            QueryObject qobject)
                     throws QMException

This method will execute the query(s) specified in QueryObject but will not use Assembling information. The assembling information can be later specified to the returned QueryResults object.

Specified by:

execute in interface QueryManager

Parameters:

con - The database connection used for this operation.

qobject - QueryObject that contains description of query

Returns:

QueryResults should be later set with an AssembleDescriptor that will be used to assemble composite objects.

Throws:

QMException - QMException

execute

public QueryResults execute(QueryObject qobject)
                     throws QMException

This method will execute the query(s) specified in QueryObject but will not use Assembling information. The assembling information can be later specified to the returned QueryResults object.

Specified by:

execute in interface QueryManager

Parameters:

qobject - QueryObject that contains description of query

Returns:

QueryResults should be later set with an AssembleDescriptor that will be used to assemble composite objects.

Throws:

QMException - QMException

executeAssemble

public QMIterator executeAssemble(java.sql.Connection con,
                                  QueryObject qobject)
                           throws QMException

This method will execute the query(s) specified in QueryObject and also use FactoryEngine for creating composite objects.

Specified by:

executeAssemble in interface QueryManager

Parameters:

qobject - QueryObject that contains description of query

Returns:

QMIterator iterator that is used to fetch each composite object.

Throws:

QMException - QMException

executeAssemble

public QMIterator executeAssemble(QueryObject qobject)
                           throws QMException

This method will execute the query(s) specified in QueryObject and also use FactoryEngine for creating composite objects.

Specified by:

executeAssemble in interface QueryManager

Parameters:

qobject - QueryObject that contains description of query

Returns:

QMIterator iterator that is used to fetch each composite object.

Throws:

QMException - QMException

getConnectionCounter

static int getConnectionCounter()

incrementConnectionCounter

static void incrementConnectionCounter()

prepare

public void prepare(QueryObject qobject)
             throws QMException

This method will prepare the QueryObject without executing the query and will put in the cache pool.

Specified by:

prepare in interface QueryManager

Parameters:

qobject - QueryObject that needs to be prepared and cached.

Throws:

QMException - QMException