/**
* 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.record.vector;
import com.google.common.collect.Lists;
import io.netty.buffer.ByteBuf;
import org.apache.drill.common.expression.ExpressionPosition;
import org.apache.drill.common.expression.SchemaPath;
import org.apache.drill.common.types.TypeProtos;
import org.apache.drill.common.types.TypeProtos.*;
import org.apache.drill.common.types.Types;
import org.apache.drill.exec.memory.BufferAllocator;
import org.apache.drill.exec.record.MaterializedField;
import org.apache.drill.exec.record.RecordBatchLoader;
import org.apache.drill.exec.record.VectorWrapper;
import org.apache.drill.exec.record.WritableBatch;
import org.apache.drill.exec.vector.*;
import org.junit.Test;
import java.util.List;
import static org.junit.Assert.assertEquals;
/**
* Created with IntelliJ IDEA.
* User: witwolf
* Date: 8/30/13
* Time: 5:00 PM
*/
public class TestLoad {
@Test
public void testLoadValueVector() {
BufferAllocator allocator = BufferAllocator.getAllocator(null);
ValueVector fixedV = new IntVector(
MaterializedField.create(new SchemaPath("ints", ExpressionPosition.UNKNOWN), Types.required(MinorType.INT)),
allocator);
ValueVector varlenV = new VarCharVector(
MaterializedField.create(new SchemaPath("chars", ExpressionPosition.UNKNOWN), Types.required(MinorType.VARCHAR)),
allocator
);
ValueVector nullableVarlenV = new NullableVarCharVector(
MaterializedField.create(new SchemaPath("chars", ExpressionPosition.UNKNOWN), Types.optional(MinorType.VARCHAR)),
allocator
);
List<ValueVector> vectors = Lists.newArrayList(fixedV, varlenV, nullableVarlenV);
for (ValueVector v : vectors) {
AllocationHelper.allocate(v, 100, 50);
v.getMutator().generateTestData();
v.getMutator().setValueCount(100);
}
WritableBatch writableBatch = WritableBatch.getBatchNoSV(100, vectors);
RecordBatchLoader batchLoader = new RecordBatchLoader(allocator);
ByteBuf[] byteBufs = writableBatch.getBuffers();
int bytes = 0;
for (int i = 0; i < byteBufs.length; i++) {
bytes += byteBufs[i].writerIndex();
}
ByteBuf byteBuf = allocator.buffer(bytes);
int index = 0;
for (int i = 0; i < byteBufs.length; i++) {
byteBufs[i].readBytes(byteBuf, index, byteBufs[i].writerIndex());
index += byteBufs[i].writerIndex();
}
byteBuf.writerIndex(bytes);
try {
batchLoader.load(writableBatch.getDef(), byteBuf);
boolean firstColumn = true;
int recordCount = 0;
for (VectorWrapper<?> v : batchLoader) {
if (firstColumn) {
firstColumn = false;
} else {
System.out.print("\t");
}
System.out.print(v.getField().getName());
System.out.print("[");
System.out.print(v.getField().getType().getMinorType());
System.out.print("]");
}
System.out.println();
for (int r = 0; r < batchLoader.getRecordCount(); r++) {
boolean first = true;
recordCount++;
for (VectorWrapper<?> v : batchLoader) {
if (first) {
first = false;
} else {
System.out.print("\t");
}
ValueVector.Accessor accessor = v.getValueVector().getAccessor();
if (v.getField().getType().getMinorType() == TypeProtos.MinorType.VARCHAR) {
Object obj = accessor.getObject(r) ;
if(obj != null)
System.out.print(new String((byte[]) accessor.getObject(r)));
else
System.out.print("NULL");
} else {
System.out.print(accessor.getObject(r));
}
}
if (!first) System.out.println();
}
assertEquals(100, recordCount);
} catch (Exception e) {
e.printStackTrace();
}
}
}