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/*******************************************************************************
* Copyright (c) 2010-2016, Abel Hegedus, IncQuery Labs Ltd.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-v20.html.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package tools.refinery.viatra.runtime.registry.connector;
import java.util.Objects;
import tools.refinery.viatra.runtime.extensibility.IQueryGroupProvider;
import tools.refinery.viatra.runtime.extensibility.IQuerySpecificationProvider;
import tools.refinery.viatra.runtime.registry.IConnectorListener;
/**
* Source connector implementation that uses a {@link IQueryGroupProvider} to provide a query specifications into the
* registry. The query group can be later updated which triggers the removal of all specifications of the old group and
* the addition of all specifications from the new group.
*
* @author Abel Hegedus
* @since 1.3
*
*/
public class QueryGroupProviderSourceConnector extends AbstractRegistrySourceConnector {
IQueryGroupProvider queryGroupProvider;
/**
* Creates an instance of the connector with the given identifier and the query group provider. The identifier
* should be unique if you want to add it to a registry as a source.
*
* @param identifier
* of the newly created connector
* @param provider
* that contains the query specifications handled by the connector
* @param includeInDefaultViews
* true if the specifications in the connector should be included in default views
*/
public QueryGroupProviderSourceConnector(String identifier, IQueryGroupProvider provider, boolean includeInDefaultViews) {
super(identifier, includeInDefaultViews);
this.queryGroupProvider = provider;
}
/**
* Update the query group of the connector, which triggers the removal of all specifications on the old group and
* addition of all specifications in the given group.
*
* @param queryGroupProvider
* the queryGroupProvider to set
* @param includeInDefaultViews
* true if the specifications in the connector should be included in default views
*/
public void setQueryGroupProvider(IQueryGroupProvider queryGroupProvider) {
Objects.requireNonNull(queryGroupProvider, "Query group provider must not be null!");
IQueryGroupProvider oldProvider = this.queryGroupProvider;
for (IQuerySpecificationProvider specificationProvider : oldProvider.getQuerySpecificationProviders()) {
for (IConnectorListener iConnectorListener : listeners) {
iConnectorListener.querySpecificationRemoved(this, specificationProvider);
}
}
for (IQuerySpecificationProvider specificationProvider : queryGroupProvider.getQuerySpecificationProviders()) {
for (IConnectorListener iConnectorListener : listeners) {
iConnectorListener.querySpecificationAdded(this, specificationProvider);
}
}
this.queryGroupProvider = queryGroupProvider;
}
@Override
protected void sendQuerySpecificationsToListener(IConnectorListener listener) {
for (IQuerySpecificationProvider specificationProvider : queryGroupProvider.getQuerySpecificationProviders()) {
listener.querySpecificationAdded(this, specificationProvider);
}
}
}
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