/*
 ***************************************************************************************
 *  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.event.BaseNestableEventUtil;
import com.espertech.esper.event.EventAdapterService;

import java.util.Map;

/**
 * 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<String, Object> map) throws PropertyAccessException {
        return map.get(propertyName);
    }

    public boolean isMapExistsProperty(Map<String, Object> 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.getFragmentArray(eventAdapterService, value, fragmentEventType);
    }
}