extensions/cep/modules/stratos-cep-extension/wso2cep-3.0.0/src/main/java/org/apache/stratos/cep/extension/SystemTimeWindowProcessor.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.stratos.cep.extension;
import org.wso2.siddhi.core.config.SiddhiContext;
import org.wso2.siddhi.core.executor.function.FunctionExecutor;
import org.wso2.siddhi.query.api.definition.Attribute;
import org.wso2.siddhi.query.api.extension.annotation.SiddhiExtension;

/**
 * CEP Window Processor to get current system time.
 */
@SiddhiExtension(namespace = "stratos", function = "now")
public class SystemTimeWindowProcessor extends FunctionExecutor {
    Attribute.Type returnType = Attribute.Type.LONG;
    @Override
    public void init(Attribute.Type[] types, SiddhiContext siddhiContext) {
    }

    @Override
    protected Object process(Object obj) {
        return System.currentTimeMillis();
    }

    @Override
    public void destroy() {
    }

    @Override
    public Attribute.Type getReturnType() {
        return returnType;
    }
}