/*
***************************************************************************************
* Copyright (C) 2006 EsperTech, Inc. All rights reserved. *
* http://www.espertech.com/esper *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
***************************************************************************************
*/
package com.espertech.esper.epl.table.onaction;
import com.espertech.esper.client.EventType;
import com.espertech.esper.core.service.InternalEventRouter;
import com.espertech.esper.core.service.StatementContext;
import com.espertech.esper.epl.expression.core.ExprValidationException;
import com.espertech.esper.epl.metric.StatementMetricHandle;
import com.espertech.esper.epl.spec.*;
import com.espertech.esper.epl.table.merge.TableOnMergeHelper;
import com.espertech.esper.epl.table.mgmt.TableMetadata;
import com.espertech.esper.epl.table.upd.TableUpdateStrategy;
import com.espertech.esper.epl.updatehelper.EventBeanUpdateHelper;
import com.espertech.esper.epl.updatehelper.EventBeanUpdateHelperFactory;
import com.espertech.esper.event.EventBeanReader;
import com.espertech.esper.event.EventTypeSPI;
/**
* View for the on-delete statement that handles removing events from a named window.
*/
public class TableOnViewFactoryFactory {
public static TableOnViewFactory make(TableMetadata tableMetadata,
OnTriggerDesc onTriggerDesc,
EventType filterEventType,
String filterStreamName,
StatementContext statementContext,
StatementMetricHandle metricsHandle,
boolean isDistinct,
InternalEventRouter internalEventRouter
)
throws ExprValidationException {
if (onTriggerDesc.getOnTriggerType() == OnTriggerType.ON_DELETE) {
return new TableOnDeleteViewFactory(statementContext.getStatementResultService(), tableMetadata);
} else if (onTriggerDesc.getOnTriggerType() == OnTriggerType.ON_SELECT) {
EventBeanReader eventBeanReader = null;
if (isDistinct) {
eventBeanReader = tableMetadata.getInternalEventType().getReader();
}
OnTriggerWindowDesc windowDesc = (OnTriggerWindowDesc) onTriggerDesc;
return new TableOnSelectViewFactory(tableMetadata, internalEventRouter, statementContext.getEpStatementHandle(),
eventBeanReader, isDistinct, statementContext.getStatementResultService(), statementContext.getInternalEventEngineRouteDest(), windowDesc.isDeleteAndSelect());
} else if (onTriggerDesc.getOnTriggerType() == OnTriggerType.ON_UPDATE) {
OnTriggerWindowUpdateDesc updateDesc = (OnTriggerWindowUpdateDesc) onTriggerDesc;
EventBeanUpdateHelper updateHelper = EventBeanUpdateHelperFactory.make(tableMetadata.getTableName(), (EventTypeSPI) tableMetadata.getInternalEventType(), updateDesc.getAssignments(), updateDesc.getOptionalAsName(), filterEventType, false, statementContext.getStatementName(), statementContext.getEngineURI(), statementContext.getEventAdapterService());
TableUpdateStrategy updateStrategy = statementContext.getTableService().getTableUpdateStrategy(tableMetadata, updateHelper, false);
TableOnUpdateViewFactory onUpdateViewFactory = new TableOnUpdateViewFactory(statementContext.getStatementResultService(), tableMetadata, updateHelper, updateStrategy);
statementContext.getTableService().addTableUpdateStrategyReceiver(tableMetadata, statementContext.getStatementName(), onUpdateViewFactory, updateHelper, false);
return onUpdateViewFactory;
} else if (onTriggerDesc.getOnTriggerType() == OnTriggerType.ON_MERGE) {
OnTriggerMergeDesc onMergeTriggerDesc = (OnTriggerMergeDesc) onTriggerDesc;
TableOnMergeHelper onMergeHelper = new TableOnMergeHelper(statementContext, onMergeTriggerDesc, filterEventType, filterStreamName, internalEventRouter, tableMetadata);
return new TableOnMergeViewFactory(tableMetadata, onMergeHelper, statementContext.getStatementResultService(), metricsHandle, statementContext.getMetricReportingService());
} else {
throw new IllegalStateException("Unknown trigger type " + onTriggerDesc.getOnTriggerType());
}
}
}