/*
* Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. 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.wso2.siddhi.core.executor.math.multiply;
import org.wso2.siddhi.core.event.ComplexEvent;
import org.wso2.siddhi.core.executor.ExpressionExecutor;
import org.wso2.siddhi.query.api.definition.Attribute;
/**
* Executor class for Integer Multiply function. Function execution logic is implemented in execute here.
*/
public class MultiplyExpressionExecutorInt implements ExpressionExecutor {
private ExpressionExecutor leftExpressionExecutor;
private ExpressionExecutor rightExpressionExecutor;
public MultiplyExpressionExecutorInt(ExpressionExecutor leftExpressionExecutor,
ExpressionExecutor rightExpressionExecutor) {
this.leftExpressionExecutor = leftExpressionExecutor;
this.rightExpressionExecutor = rightExpressionExecutor;
}
@Override
public Object execute(ComplexEvent event) {
Object leftObject = leftExpressionExecutor.execute(event);
Object rightObject = rightExpressionExecutor.execute(event);
if (leftObject == null || rightObject == null) {
return null;
}
return ((Number) leftObject).intValue() * ((Number) rightObject).intValue();
}
public Attribute.Type getReturnType() {
return Attribute.Type.INT;
}
@Override
public ExpressionExecutor cloneExecutor(String key) {
return new MultiplyExpressionExecutorInt(leftExpressionExecutor.cloneExecutor(key), rightExpressionExecutor
.cloneExecutor(key));
}
}