/**
* 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.physical.impl.materialize;
import org.apache.drill.exec.ops.FragmentContext;
import org.apache.drill.exec.proto.UserBitShared.QueryId;
import org.apache.drill.exec.proto.UserBitShared.QueryResult;
import org.apache.drill.exec.record.BatchSchema;
import org.apache.drill.exec.record.RecordBatch;
import org.apache.drill.exec.record.WritableBatch;
public class VectorRecordMaterializer implements RecordMaterializer{
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(VectorRecordMaterializer.class);
private QueryId queryId;
private RecordBatch batch;
public VectorRecordMaterializer(FragmentContext context, RecordBatch batch) {
this.queryId = context.getHandle().getQueryId();
this.batch = batch;
BatchSchema schema = batch.getSchema();
assert schema != null : "Schema must be defined.";
// for (MaterializedField f : batch.getSchema()) {
// logger.debug("New Field: {}", f);
// }
}
public QueryWritableBatch convertNext(boolean isLast) {
//batch.getWritableBatch().getDef().getRecordCount()
WritableBatch w = batch.getWritableBatch();
QueryResult header = QueryResult.newBuilder() //
.setQueryId(queryId) //
.setRowCount(batch.getRecordCount()) //
.setDef(w.getDef()).setIsLastChunk(isLast).build();
QueryWritableBatch batch = new QueryWritableBatch(header, w.getBuffers());
return batch;
}
}