com.espertech.esper.event.map.MapFragmentArrayPropertyGetter Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of esper Show documentation
Show all versions of esper Show documentation
Complex event processing and event series analysis component
/*
***************************************************************************************
* 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.event.map;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.EventType;
import com.espertech.esper.client.PropertyAccessException;
import com.espertech.esper.codegen.base.CodegenClassScope;
import com.espertech.esper.codegen.base.CodegenMember;
import com.espertech.esper.codegen.base.CodegenMethodScope;
import com.espertech.esper.codegen.model.expression.CodegenExpression;
import com.espertech.esper.codegen.base.CodegenMethodNode;
import com.espertech.esper.event.BaseNestableEventUtil;
import com.espertech.esper.event.EventAdapterService;
import java.util.Map;
import static com.espertech.esper.codegen.model.expression.CodegenExpressionBuilder.*;
/**
* Getter for map array.
*/
public class MapFragmentArrayPropertyGetter implements MapEventPropertyGetter {
private final String propertyName;
private final EventType fragmentEventType;
private final EventAdapterService eventAdapterService;
/**
* Ctor.
*
* @param propertyNameAtomic property type
* @param fragmentEventType event type of fragment
* @param eventAdapterService for creating event instances
*/
public MapFragmentArrayPropertyGetter(String propertyNameAtomic, EventType fragmentEventType, EventAdapterService eventAdapterService) {
this.propertyName = propertyNameAtomic;
this.fragmentEventType = fragmentEventType;
this.eventAdapterService = eventAdapterService;
}
public Object getMap(Map map) throws PropertyAccessException {
return map.get(propertyName);
}
public boolean isMapExistsProperty(Map map) {
return true;
}
public Object get(EventBean obj) throws PropertyAccessException {
return getMap(BaseNestableEventUtil.checkedCastUnderlyingMap(obj));
}
public boolean isExistsProperty(EventBean eventBean) {
return true;
}
public Object getFragment(EventBean eventBean) throws PropertyAccessException {
Object value = get(eventBean);
if (value instanceof EventBean[]) {
return value;
}
return BaseNestableEventUtil.getBNFragmentArray(value, fragmentEventType, eventAdapterService);
}
private CodegenMethodNode getFragmentCodegen(CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope) {
CodegenMember mSvc = codegenClassScope.makeAddMember(EventAdapterService.class, eventAdapterService);
CodegenMember mType = codegenClassScope.makeAddMember(EventType.class, fragmentEventType);
return codegenMethodScope.makeChild(Object.class, this.getClass(), codegenClassScope).addParam(Map.class, "map").getBlock()
.declareVar(Object.class, "value", underlyingGetCodegen(ref("map"), codegenMethodScope, codegenClassScope))
.ifInstanceOf("value", EventBean[].class)
.blockReturn(ref("value"))
.methodReturn(staticMethod(BaseNestableEventUtil.class, "getBNFragmentArray", ref("value"), member(mType.getMemberId()), member(mSvc.getMemberId())));
}
public CodegenExpression eventBeanGetCodegen(CodegenExpression beanExpression, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope) {
return underlyingGetCodegen(castUnderlying(Map.class, beanExpression), codegenMethodScope, codegenClassScope);
}
public CodegenExpression eventBeanExistsCodegen(CodegenExpression beanExpression, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope) {
return constantTrue();
}
public CodegenExpression eventBeanFragmentCodegen(CodegenExpression beanExpression, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope) {
return underlyingFragmentCodegen(castUnderlying(Map.class, beanExpression), codegenMethodScope, codegenClassScope);
}
public CodegenExpression underlyingGetCodegen(CodegenExpression underlyingExpression, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope) {
return exprDotMethod(underlyingExpression, "get", constant(propertyName));
}
public CodegenExpression underlyingExistsCodegen(CodegenExpression underlyingExpression, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope) {
return constantTrue();
}
public CodegenExpression underlyingFragmentCodegen(CodegenExpression underlyingExpression, CodegenMethodScope codegenMethodScope, CodegenClassScope codegenClassScope) {
return localMethod(getFragmentCodegen(codegenMethodScope, codegenClassScope), underlyingExpression);
}
}