com.amazon.carbonado.qe

Class QueryEngine<S extends Storable>

java.lang.Object

com.amazon.carbonado.qe.StandardQueryFactory<S>

com.amazon.carbonado.qe.QueryEngine<S>

All Implemented Interfaces:

QueryExecutorFactory<S>, QueryFactory<S>

public class QueryEngine<S extends Storable>
extends StandardQueryFactory<S>
implements QueryExecutorFactory<S>

Complete rule-based query engine implementation.

Author:

Brian S O'Neill

Constructor Summary

Constructors

Constructor and Description
QueryEngine(java.lang.Class<S> type, RepositoryAccess access)

Method Summary

Methods

Modifier and Type	Method and Description
protected StandardQuery<S>	createQuery(Filter<S> filter, FilterValues<S> values, OrderingList<S> ordering, QueryHints hints) Implement this method to return query implementations.
QueryExecutor<S>	executor(Filter<S> filter, OrderingList<S> ordering, QueryHints hints) Returns an executor that handles the given query specification.

Methods inherited from class com.amazon.carbonado.qe.StandardQueryFactory

clearExecutors, getStorableType, query, query, query, query, query, query, query, resetExecutors, setExecutors

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.amazon.carbonado.qe.QueryExecutorFactory

getStorableType

Constructor Detail

QueryEngine

public QueryEngine(java.lang.Class<S> type,
           RepositoryAccess access)

Method Detail

executor

public QueryExecutor<S> executor(Filter<S> filter,
                        OrderingList<S> ordering,
                        QueryHints hints)
                                           throws RepositoryException

Description copied from interface: QueryExecutorFactory

Returns an executor that handles the given query specification.

Specified by:

executor in interface QueryExecutorFactory<S extends Storable>

Parameters:

filter - optional filter

ordering - optional order-by properties

hints - optional query hints

Throws:

RepositoryException

createQuery

protected StandardQuery<S> createQuery(Filter<S> filter,
                           FilterValues<S> values,
                           OrderingList<S> ordering,
                           QueryHints hints)

Description copied from class: StandardQueryFactory

Implement this method to return query implementations.

Specified by:

createQuery in class StandardQueryFactory<S extends Storable>

Parameters:

filter - optional filter object, defaults to open filter if null

values - optional values object, defaults to filter initial values

ordering - optional order-by properties

hints - optional hints