com.creactiviti.piper.core.event.PiperEvent.java Source code

Introduction

Here is the source code for com.creactiviti.piper.core.event.PiperEvent.java

Source

/*
 * Copyright 2016-2018 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.creactiviti.piper.core.event;

import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import org.springframework.util.Assert;

import com.creactiviti.piper.core.Accessor;
import com.creactiviti.piper.core.DSL;
import com.creactiviti.piper.core.MapObject;
import com.creactiviti.piper.core.uuid.UUIDGenerator;
import com.google.common.collect.ImmutableMap;

/**
 * 
 * @author Arik Cohen
 * @since Apr 8, 2017
 */
public class PiperEvent extends MapObject implements Accessor {

    public PiperEvent() {
        super();
    }

    public PiperEvent(Map<String, Object> aSource) {
        super(new MapObject(aSource));
    }

    public String getType() {
        return getRequiredString(DSL.TYPE);
    }

    public Date getCreateTime() {
        return getDate(DSL.CREATE_TIME);
    }

    public static PiperEvent of(String aType) {
        return of(aType, Collections.EMPTY_MAP);
    }

    public static PiperEvent of(String aType, String aKey, Object aValue) {
        Assert.notNull(aKey, "key must not be null");
        Assert.notNull(aValue, "value for " + aKey + " must not be null");
        return of(aType, ImmutableMap.of(aKey, aValue));
    }

    public static PiperEvent of(String aType, String aKey1, Object aValue1, String aKey2, Object aValue2) {
        Assert.notNull(aKey1, "key must not be null");
        Assert.notNull(aValue1, "value for " + aKey1 + " must not be null");
        Assert.notNull(aKey2, "key must not be null");
        Assert.notNull(aValue2, "value for " + aKey2 + " must not be null");
        return of(aType, ImmutableMap.of(aKey1, aValue1, aKey2, aValue2));
    }

    public static PiperEvent of(String aType, Map<String, Object> aProperties) {
        Assert.notNull(aType, "event type must not be null");
        Map<String, Object> source = new HashMap<>(
                ImmutableMap.of("id", UUIDGenerator.generate(), "type", aType, "createTime", new Date()));
        source.putAll(aProperties);
        return new PiperEvent(source);
    }

}