PrestoThriftBigint.java
/*
* Licensed 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 com.facebook.presto.thrift.api.datatypes;
import com.facebook.drift.annotations.ThriftConstructor;
import com.facebook.drift.annotations.ThriftField;
import com.facebook.drift.annotations.ThriftStruct;
import com.facebook.presto.common.block.Block;
import com.facebook.presto.common.block.LongArrayBlock;
import com.facebook.presto.common.type.Type;
import com.facebook.presto.spi.RecordSet;
import javax.annotation.Nullable;
import java.util.Arrays;
import java.util.Objects;
import java.util.Optional;
import static com.facebook.drift.annotations.ThriftField.Requiredness.OPTIONAL;
import static com.facebook.presto.common.type.BigintType.BIGINT;
import static com.facebook.presto.thrift.api.datatypes.PrestoThriftBlock.bigintData;
import static com.facebook.presto.thrift.api.datatypes.PrestoThriftTypeUtils.fromLongBasedBlock;
import static com.facebook.presto.thrift.api.datatypes.PrestoThriftTypeUtils.fromLongBasedColumn;
import static com.google.common.base.MoreObjects.toStringHelper;
import static com.google.common.base.Preconditions.checkArgument;
/**
* Elements of {@code nulls} array determine if a value for a corresponding row is null.
* Elements of {@code longs} array are values for each row. If row is null then value is ignored.
*/
@ThriftStruct
public final class PrestoThriftBigint
implements PrestoThriftColumnData
{
private final boolean[] nulls;
private final long[] longs;
@ThriftConstructor
public PrestoThriftBigint(
@ThriftField(name = "nulls") @Nullable boolean[] nulls,
@ThriftField(name = "longs") @Nullable long[] longs)
{
checkArgument(sameSizeIfPresent(nulls, longs), "nulls and values must be of the same size");
this.nulls = nulls;
this.longs = longs;
}
@Nullable
@ThriftField(value = 1, requiredness = OPTIONAL)
public boolean[] getNulls()
{
return nulls;
}
@Nullable
@ThriftField(value = 2, requiredness = OPTIONAL)
public long[] getLongs()
{
return longs;
}
@Override
public Block toBlock(Type desiredType)
{
checkArgument(BIGINT.equals(desiredType), "type doesn't match: %s", desiredType);
int numberOfRecords = numberOfRecords();
return new LongArrayBlock(
numberOfRecords,
Optional.ofNullable(nulls),
longs == null ? new long[numberOfRecords] : longs);
}
@Override
public int numberOfRecords()
{
if (nulls != null) {
return nulls.length;
}
if (longs != null) {
return longs.length;
}
return 0;
}
@Override
public boolean equals(Object obj)
{
if (this == obj) {
return true;
}
if (obj == null || getClass() != obj.getClass()) {
return false;
}
PrestoThriftBigint other = (PrestoThriftBigint) obj;
return Arrays.equals(this.nulls, other.nulls) &&
Arrays.equals(this.longs, other.longs);
}
@Override
public int hashCode()
{
return Objects.hash(Arrays.hashCode(nulls), Arrays.hashCode(longs));
}
@Override
public String toString()
{
return toStringHelper(this)
.add("numberOfRecords", numberOfRecords())
.toString();
}
public static PrestoThriftBlock fromBlock(Block block)
{
return fromLongBasedBlock(block, BIGINT, (nulls, longs) -> bigintData(new PrestoThriftBigint(nulls, longs)));
}
public static PrestoThriftBlock fromRecordSetColumn(RecordSet recordSet, int columnIndex, int totalRecords)
{
return fromLongBasedColumn(recordSet, columnIndex, totalRecords, (nulls, longs) -> bigintData(new PrestoThriftBigint(nulls, longs)));
}
private static boolean sameSizeIfPresent(boolean[] nulls, long[] longs)
{
return nulls == null || longs == null || nulls.length == longs.length;
}
}