/**
* 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.hadoop.hive.ql.exec.vector.expressions;
import org.apache.hadoop.hive.ql.exec.vector.BytesColumnVector;
import org.apache.hadoop.hive.ql.exec.vector.LongColumnVector;
import org.apache.hadoop.hive.ql.exec.vector.VectorExpressionDescriptor;
import org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch;
import org.apache.hadoop.hive.serde2.io.DateWritable;
import org.apache.hadoop.io.Text;
import java.io.UnsupportedEncodingException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Date;
public class VectorUDFDateAddScalarCol extends VectorExpression {
private static final long serialVersionUID = 1L;
private int colNum;
private int outputColumn;
private long longValue = 0;
private byte[] stringValue = null;
protected boolean isPositive = true;
private transient final Calendar calendar = Calendar.getInstance();
private transient SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
private transient final Text text = new Text();
private transient Date baseDate = new Date();
public VectorUDFDateAddScalarCol() {
super();
}
public VectorUDFDateAddScalarCol(Object object, int colNum, int outputColumn) {
this();
this.colNum = colNum;
this.outputColumn = outputColumn;
if (object instanceof Long) {
this.longValue = (Long) object;
} else if (object instanceof byte []) {
this.stringValue = (byte[]) object;
}
}
@Override
public void evaluate(VectorizedRowBatch batch) {
if (childExpressions != null) {
super.evaluateChildren(batch);
}
LongColumnVector inputCol = (LongColumnVector) batch.cols[this.colNum];
/* every line below this is identical for evaluateLong & evaluateString */
final int n = inputCol.isRepeating ? 1 : batch.size;
int[] sel = batch.selected;
BytesColumnVector outV = (BytesColumnVector) batch.cols[outputColumn];
switch (inputTypes[0]) {
case DATE:
baseDate.setTime(DateWritable.daysToMillis((int) longValue));
break;
case TIMESTAMP:
baseDate.setTime(longValue / 1000000);
break;
case STRING:
try {
baseDate = formatter.parse(new String(stringValue, "UTF-8"));
break;
} catch (Exception e) {
outV.noNulls = false;
if (batch.selectedInUse) {
for(int j=0; j < n; j++) {
int i = sel[j];
outV.isNull[i] = true;
}
} else {
for(int i = 0; i < n; i++) {
outV.isNull[i] = true;
}
}
return;
}
}
if(batch.size == 0) {
/* n != batch.size when isRepeating */
return;
}
/* true for all algebraic UDFs with no state */
outV.isRepeating = inputCol.isRepeating;
if (inputCol.noNulls) {
outV.noNulls = true;
if (batch.selectedInUse) {
for(int j=0; j < n; j++) {
int i = sel[j];
evaluate(baseDate, inputCol.vector[i], outV, i);
}
} else {
for(int i = 0; i < n; i++) {
evaluate(baseDate, inputCol.vector[i], outV, i);
}
}
} else {
// Handle case with nulls. Don't do function if the value is null, to save time,
// because calling the function can be expensive.
outV.noNulls = false;
if (batch.selectedInUse) {
for(int j = 0; j < n; j++) {
int i = sel[j];
outV.isNull[i] = inputCol.isNull[i];
if (!inputCol.isNull[i]) {
evaluate(baseDate, inputCol.vector[i], outV, i);
}
}
} else {
for(int i = 0; i < n; i++) {
outV.isNull[i] = inputCol.isNull[i];
if (!inputCol.isNull[i]) {
evaluate(baseDate, inputCol.vector[i], outV, i);
}
}
}
}
}
private void evaluate(Date baseDate, long numDays, BytesColumnVector output, int i) {
calendar.setTime(baseDate);
if (isPositive) {
calendar.add(Calendar.DATE, (int) numDays);
} else {
calendar.add(Calendar.DATE, -(int) numDays);
}
Date newDate = calendar.getTime();
text.set(formatter.format(newDate));
int size = text.getLength();
output.vector[i] = Arrays.copyOf(text.getBytes(), size);
output.start[i] = 0;
output.length[i] = size;
}
@Override
public int getOutputColumn() {
return this.outputColumn;
}
@Override
public String getOutputType() {
return "string";
}
public int getColNum() {
return colNum;
}
public void setColNum(int colNum) {
this.colNum = colNum;
}
public void setOutputColumn(int outputColumn) {
this.outputColumn = outputColumn;
}
public long getLongValue() {
return longValue;
}
public void setLongValue(long longValue) {
this.longValue = longValue;
}
public byte[] getStringValue() {
return stringValue;
}
public void setStringValue(byte[] stringValue) {
this.stringValue = stringValue;
}
public boolean isPositive() {
return isPositive;
}
public void setPositive(boolean isPositive) {
this.isPositive = isPositive;
}
public VectorExpressionDescriptor.Descriptor getDescriptor() {
VectorExpressionDescriptor.Builder b = new VectorExpressionDescriptor.Builder();
b.setMode(VectorExpressionDescriptor.Mode.PROJECTION)
.setNumArguments(2)
.setArgumentTypes(
VectorExpressionDescriptor.ArgumentType.ANY,
VectorExpressionDescriptor.ArgumentType.LONG)
.setInputExpressionTypes(
VectorExpressionDescriptor.InputExpressionType.SCALAR,
VectorExpressionDescriptor.InputExpressionType.COLUMN);
return b.build();
}
}