/*
* 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.pig.backend.stratosphere.executionengine.pactLayer.expressionOperators;
import org.apache.pig.backend.executionengine.ExecException;
import org.apache.pig.backend.stratosphere.executionengine.pactLayer.Result;
import org.apache.pig.backend.stratosphere.executionengine.pactLayer.SOStatus;
import org.apache.pig.backend.stratosphere.executionengine.pactLayer.plans.PactPlanVisitor;
import org.apache.pig.data.DataType;
import org.apache.pig.data.Tuple;
import org.apache.pig.impl.plan.OperatorKey;
import org.apache.pig.impl.plan.NodeIdGenerator;
import org.apache.pig.impl.plan.VisitorException;
public class PONegative extends UnaryExpressionOperator {
private static final long serialVersionUID = 1L;
public PONegative(OperatorKey k, int rp) {
super(k, rp);
}
public PONegative(OperatorKey k) {
super(k);
}
public PONegative(OperatorKey k, int rp, ExpressionOperator input) {
super(k, rp);
this.expr = input;
}
@Override
public void visit(PactPlanVisitor v) throws VisitorException {
v.visitNegative(this);
}
@Override
public String name() {
// TODO Auto-generated method stub
return "PONegative" + "[" + DataType.findTypeName(resultType) + "]" +" - " + mKey.toString();
}
@Override
public Result getNext(Double d) throws ExecException {
Result res = expr.getNext(d);
if(res.returnStatus == SOStatus.STATUS_OK && res.result!=null) {
res.result = -1*((Double)res.result);
}
return res;
}
@Override
public Result getNext(Float f) throws ExecException {
Result res = expr.getNext(f);
if(res.returnStatus == SOStatus.STATUS_OK && res.result!=null ) {
res.result = -1*((Float)res.result);
}
return res;
}
@Override
public Result getNext(Integer i) throws ExecException {
Result res = expr.getNext(i);
if(res.returnStatus == SOStatus.STATUS_OK && res.result!=null ) {
res.result = -1*((Integer)res.result);
}
return res;
}
@Override
public Result getNext(Long l) throws ExecException {
Result res = expr.getNext(l);
if(res.returnStatus == SOStatus.STATUS_OK && res.result!=null) {
res.result = -1*((Long)res.result);
}
return res;
}
@Override
public PONegative clone() throws CloneNotSupportedException {
PONegative clone = new PONegative(new OperatorKey(mKey.scope,
NodeIdGenerator.getGenerator().getNextNodeId(mKey.scope)));
clone.cloneHelper(this);
return clone;
}
@Override
public Tuple illustratorMarkup(Object in, Object out, int eqClassIndex) {
return (Tuple) out;
}
}