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/**
* 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.drill.exec.util;
import com.beust.jcommander.internal.Lists;
import org.apache.commons.lang.StringUtils;
import org.apache.drill.exec.exception.SchemaChangeException;
import org.apache.drill.exec.record.VectorAccessible;
import org.apache.drill.exec.record.VectorWrapper;
import org.apache.drill.exec.record.selection.SelectionVector4;
import org.apache.drill.exec.rpc.RpcException;
import org.apache.drill.exec.vector.ValueVector;
import java.util.List;
/**
* This is a tool for printing the content of record batches to screen. Used for debugging.
*/
public class BatchPrinter {
public static void printHyperBatch(VectorAccessible batch) {
List<String> columns = Lists.newArrayList();
List<ValueVector> vectors = Lists.newArrayList();
int numBatches = 0;
for (VectorWrapper vw : batch) {
columns.add(vw.getValueVectors()[0].getField().getName());
numBatches = vw.getValueVectors().length;
}
int width = columns.size();
for (int i = 0; i < numBatches; i++) {
int rows = batch.iterator().next().getValueVectors()[i].getMetadata().getValueCount();
for (int j = 0; j < rows; j++) {
for (VectorWrapper vw : batch) {
Object o = vw.getValueVectors()[i].getAccessor().getObject(j);
if (o instanceof byte[]) {
String value = new String((byte[]) o);
System.out.printf("| %-15s",value.length() <= 15 ? value : value.substring(0, 14));
} else {
String value = o.toString();
System.out.printf("| %-15s",value.length() <= 15 ? value : value.substring(0,14));
}
}
System.out.printf("|\n");
}
}
System.out.printf("|\n");
}
public static void printBatch(VectorAccessible batch) {
List<String> columns = Lists.newArrayList();
List<ValueVector> vectors = Lists.newArrayList();
for (VectorWrapper vw : batch) {
columns.add(vw.getValueVector().getField().getName());
vectors.add(vw.getValueVector());
}
int width = columns.size();
int rows = vectors.get(0).getMetadata().getValueCount();
for (int row = 0; row < rows; row++) {
if (row%50 == 0) {
System.out.println(StringUtils.repeat("-", width * 17 + 1));
for (String column : columns) {
System.out.printf("| %-15s", width <= 15 ? column : column.substring(0, 14));
}
System.out.printf("|\n");
System.out.println(StringUtils.repeat("-", width*17 + 1));
}
for (ValueVector vv : vectors) {
Object o = vv.getAccessor().getObject(row);
if (o instanceof byte[]) {
String value = new String((byte[]) o);
System.out.printf("| %-15s",value.length() <= 15 ? value : value.substring(0, 14));
} else {
String value = o.toString();
System.out.printf("| %-15s",value.length() <= 15 ? value : value.substring(0,14));
}
}
System.out.printf("|\n");
}
}
}
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