/*
* 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.hadoop.executionengine.physicalLayer.expressionOperators;
import java.math.BigDecimal;
import java.math.BigInteger;
import org.apache.pig.backend.executionengine.ExecException;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.POStatus;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.Result;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.plans.PhyPlanVisitor;
import org.apache.pig.data.DataType;
import org.apache.pig.data.Tuple;
import org.apache.pig.impl.plan.NodeIdGenerator;
import org.apache.pig.impl.plan.OperatorKey;
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(PhyPlanVisitor 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 getNextDouble() throws ExecException {
Result res = expr.getNextDouble();
if(res.returnStatus == POStatus.STATUS_OK && res.result!=null) {
res.result = -1*((Double)res.result);
}
return res;
}
@Override
public Result getNextFloat() throws ExecException {
Result res = expr.getNextFloat();
if(res.returnStatus == POStatus.STATUS_OK && res.result!=null ) {
res.result = -1*((Float)res.result);
}
return res;
}
@Override
public Result getNextInteger() throws ExecException {
Result res = expr.getNextInteger();
if(res.returnStatus == POStatus.STATUS_OK && res.result!=null ) {
res.result = -1*((Integer)res.result);
}
return res;
}
@Override
public Result getNextLong() throws ExecException {
Result res = expr.getNextLong();
if(res.returnStatus == POStatus.STATUS_OK && res.result!=null) {
res.result = -1*((Long)res.result);
}
return res;
}
@Override
public Result getNextBigInteger() throws ExecException {
Result res = expr.getNextBigInteger();
if(res.returnStatus == POStatus.STATUS_OK && res.result!=null) {
res.result = ((BigInteger)res.result).negate();
}
return res;
}
@Override
public Result getNextBigDecimal() throws ExecException {
Result res = expr.getNextBigDecimal();
if(res.returnStatus == POStatus.STATUS_OK && res.result!=null) {
res.result = ((BigDecimal)res.result).negate();
}
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;
}
}