org.gecko.emf.repository.query

Interface QueryRepository

public interface QueryRepository

Interface for a repository that supports IQuery

Since:

12.04.2015

Method Summary

Modifier and Type	Method and Description
IQueryBuilder	createQueryBuilder() Creates a query builder
<T extends EObject> T	getEObjectByQuery(EClass eClass, IQuery query, java.util.Map<java.lang.Object,java.lang.Object> options) Returns single EObject of the given EClass that match the given IQuery or null.
<T extends EObject> java.util.List<T>	getEObjectsByQuery(EClass eClass, IQuery query) Returns a list of all EObject of the given EClass that match the given IQuery or an empty List
<T extends EObject> java.util.List<T>	getEObjectsByQuery(EClass eClass, IQuery query, java.util.Map<java.lang.Object,java.lang.Object> options) Returns a list of all EObject of the given EClass that match the given IQuery or an empty List

Method Detail

createQueryBuilder

IQueryBuilder createQueryBuilder()

Creates a query builder

Returns:

the IQueryBuilder instance

getEObjectsByQuery

<T extends EObject> java.util.List<T> getEObjectsByQuery(EClass eClass,
                                                         IQuery query)

Returns a list of all EObject of the given EClass that match the given IQuery or an empty List

Parameters:

eClass - the EClass of the objects to return

query - the IQuery

Returns:

the list with objects or an empty List

Throws:

EMFRepositoryException - thrown when an error during getting all objects occur

getEObjectsByQuery

<T extends EObject> java.util.List<T> getEObjectsByQuery(EClass eClass,
                                                         IQuery query,
                                                         java.util.Map<java.lang.Object,java.lang.Object> options)

Returns a list of all EObject of the given EClass that match the given IQuery or an empty List

Parameters:

eClass - the EClass of the objects to return

query - the IQuery

options - the Resource Load options

Returns:

the list with objects or an empty List

Throws:

EMFRepositoryException - thrown when an error during getting all objects occur

getEObjectByQuery

<T extends EObject> T getEObjectByQuery(EClass eClass,
                                        IQuery query,
                                        java.util.Map<java.lang.Object,java.lang.Object> options)

Returns single EObject of the given EClass that match the given IQuery or null. If more then one Objects matches the query the first object will be returned.

Parameters:

eClass - the EClass of the objects to return

query - the IQuery

options - the Resource Load options

Returns:

The EObject desired or null

Throws:

EMFRepositoryException - thrown when an error during getting all objects occur