Package ch.tocco.nice2.persist.core.impl.util

Class QueryPopulatorImpl

java.lang.Object

ch.tocco.nice2.persist.core.impl.util.QueryPopulatorImpl

All Implemented Interfaces:

QueryPopulator

@Component
public class QueryPopulatorImpl
extends Object
implements QueryPopulator

Implements QueryPopulator using a list of contributed ArgumentFactorys.

Each ArgumentFactory can create the value for one named parameter. If the query string contains any named parameters that an ArgumentFactory exists for, the value from the factory is set into the query.

The ArgumentFactorys may be contributed via Spring beans:

 @Bean
 public ArgumentFactoryContribution todayStartArgumentFactory(DatetimeArgumentFactory factory) {
     return new ArgumentFactoryContribution("today_start", factory);
 }
 

Constructor Summary

Constructors

Constructor	Description
QueryPopulatorImpl()

Method Summary

Modifier and Type	Method	Description
void	addArgumentFactory(String paramName, ArgumentFactory argFac)	Add a new factory for the given named parameter.
Query	createAndPopulateQuery(String queryStr, Context context)	Calls QueryPopulator.populateQuery(Query, String, Context) after compiling the query string into a Query object.
Set<String>	getRegisteredParameterNames()	Returns all parameter names that are known to this service.
void	populateQuery(Query q, FuncallNode qstr, Context context)
void	populateQuery(Query q, String qstr, Context context)	Populates the given query according to the parameter names it recognizes.
void	removeArgumentFactory(String paramName)	Removes the factory for the registered named parameter.
void	setArgumentFactories(List<ArgumentFactoryContribution> contribs)

Methods inherited from class java.lang.Object

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

Constructor Details

QueryPopulatorImpl

public QueryPopulatorImpl()

Method Details

populateQuery

public void populateQuery(Query q,
 String qstr,
 Context context)
                   throws PersistException

Description copied from interface: QueryPopulator

Populates the given query according to the parameter names it recognizes.

It searches the query string for any occurence of a registered named parameter and invokes Query.setParameter(String, Object) with the appropriate value.

Specified by:

populateQuery in interface QueryPopulator

Parameters:

q - the compiled query

qstr - the string used to compile the query

context - the persist context to use

Throws:

PersistException

populateQuery

public void populateQuery(Query q,
 FuncallNode qstr,
 Context context)
                   throws PersistException

Specified by:

populateQuery in interface QueryPopulator

Throws:

PersistException

createAndPopulateQuery

public Query createAndPopulateQuery(String queryStr,
 Context context)
                             throws PersistException

Description copied from interface: QueryPopulator

Calls QueryPopulator.populateQuery(Query, String, Context) after compiling the query string into a Query object.

Specified by:

createAndPopulateQuery in interface QueryPopulator

Parameters:

queryStr - the query string

context - the persist context to use

Returns:

the compiled and populated query

Throws:

PersistException

getRegisteredParameterNames

public Set<String> getRegisteredParameterNames()

Description copied from interface: QueryPopulator

Returns all parameter names that are known to this service.

Specified by:

getRegisteredParameterNames in interface QueryPopulator

addArgumentFactory

public void addArgumentFactory(String paramName,
 ArgumentFactory argFac)

Add a new factory for the given named parameter. Any factory already registered is silently replaced.

Parameters:

paramName - the named parameter in the query to which the factory is applied

argFac - the argument factory

removeArgumentFactory

public void removeArgumentFactory(String paramName)

Removes the factory for the registered named parameter.

Parameters:

paramName - the named parameter for which to remove the argument factory mapping

setArgumentFactories

@Autowired
public void setArgumentFactories(List<ArgumentFactoryContribution> contribs)