/* *************************************************************************************** * 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.view.stat; import com.espertech.esper.client.EventType; import com.espertech.esper.core.context.util.AgentInstanceContext; import com.espertech.esper.core.support.SupportStatementContextFactory; import com.espertech.esper.epl.expression.core.ExprNodeUtility; import com.espertech.esper.supportunit.bean.SupportMarketDataBean; import com.espertech.esper.supportunit.epl.SupportExprNodeFactory; import com.espertech.esper.supportunit.event.SupportEventTypeFactory; import com.espertech.esper.view.TestViewSupport; import com.espertech.esper.view.ViewFactoryContext; import com.espertech.esper.view.ViewFieldEnum; import com.espertech.esper.view.ViewParameterException; import com.espertech.esper.view.std.FirstElementView; import junit.framework.TestCase; public class TestWeightedAverageViewFactory extends TestCase { private WeightedAverageViewFactory factory; private ViewFactoryContext viewFactoryContext = new ViewFactoryContext(null, 1, null, null, false, -1, false); public void setUp() { factory = new WeightedAverageViewFactory(); } public void testSetParameters() throws Exception { tryParameter(new Object[]{"price", "volume"}, "price", "volume"); tryInvalidParameter(new Object[]{"symbol", 1.1d}); tryInvalidParameter(new Object[]{1.1d, "feed"}); tryInvalidParameter(new Object[]{1.1d}); tryInvalidParameter(new Object[]{"feed", "symbol", "feed"}); tryInvalidParameter(new Object[]{new String[]{"volume", "price"}}); } public void testAttaches() throws Exception { // Should attach to anything as long as the fields exists EventType parentType = SupportEventTypeFactory.createBeanType(SupportMarketDataBean.class); factory.setViewParameters(viewFactoryContext, TestViewSupport.toExprListMD(new Object[]{"price", "volume"})); factory.attach(parentType, SupportStatementContextFactory.makeContext(), null, null); assertEquals(Double.class, factory.getEventType().getPropertyType(ViewFieldEnum.WEIGHTED_AVERAGE__AVERAGE.getName())); try { factory.setViewParameters(viewFactoryContext, TestViewSupport.toExprListMD(new Object[]{"symbol", "feed"})); factory.attach(parentType, SupportStatementContextFactory.makeContext(), null, null); fail(); } catch (ViewParameterException ex) { // expected; } } public void testCanReuse() throws Exception { AgentInstanceContext agentInstanceContext = SupportStatementContextFactory.makeAgentInstanceContext(); factory.setViewParameters(viewFactoryContext, TestViewSupport.toExprListMD(new Object[]{"price", "volume"})); factory.attach(SupportEventTypeFactory.createBeanType(SupportMarketDataBean.class), SupportStatementContextFactory.makeContext(), null, null); assertFalse(factory.canReuse(new FirstElementView(null), agentInstanceContext)); EventType type = WeightedAverageView.createEventType(SupportStatementContextFactory.makeContext(), null, 1); WeightedAverageViewFactory factoryTwo = new WeightedAverageViewFactory(); factoryTwo.setFieldNameX(SupportExprNodeFactory.makeIdentNodeMD("price")); factoryTwo.setEventType(type); factoryTwo.setFieldNameWeight(SupportExprNodeFactory.makeIdentNodeMD("price")); assertFalse(factory.canReuse(new WeightedAverageView(factoryTwo, SupportStatementContextFactory.makeAgentInstanceViewFactoryContext()), agentInstanceContext)); factoryTwo.setFieldNameWeight(SupportExprNodeFactory.makeIdentNodeMD("volume")); assertTrue(factory.canReuse(new WeightedAverageView(factoryTwo, SupportStatementContextFactory.makeAgentInstanceViewFactoryContext()), agentInstanceContext)); } private void tryInvalidParameter(Object[] parameters) throws Exception { try { factory.setViewParameters(viewFactoryContext, TestViewSupport.toExprListMD(parameters)); factory.attach(SupportEventTypeFactory.createBeanType(SupportMarketDataBean.class), SupportStatementContextFactory.makeContext(), null, null); fail(); } catch (ViewParameterException ex) { // expected } } private void tryParameter(Object[] parameters, String fieldNameX, String fieldNameW) throws Exception { factory.setViewParameters(viewFactoryContext, TestViewSupport.toExprListMD(parameters)); factory.attach(SupportEventTypeFactory.createBeanType(SupportMarketDataBean.class), SupportStatementContextFactory.makeContext(), null, null); WeightedAverageView view = (WeightedAverageView) factory.makeView(SupportStatementContextFactory.makeAgentInstanceViewFactoryContext()); assertEquals(fieldNameX, ExprNodeUtility.toExpressionStringMinPrecedenceSafe(view.getFieldNameX())); assertEquals(fieldNameW, ExprNodeUtility.toExpressionStringMinPrecedenceSafe(view.getFieldNameWeight())); } }