com.facebook.presto.orc.reader.StreamReaders Maven / Gradle / Ivy
/*
* 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.orc.reader;
import com.facebook.presto.orc.StreamDescriptor;
import org.joda.time.DateTimeZone;
public final class StreamReaders
{
private StreamReaders()
{
}
public static StreamReader createStreamReader(StreamDescriptor streamDescriptor, DateTimeZone hiveStorageTimeZone)
{
switch (streamDescriptor.getStreamType()) {
case BOOLEAN:
return new BooleanStreamReader(streamDescriptor);
case BYTE:
return new ByteStreamReader(streamDescriptor);
case SHORT:
case INT:
case LONG:
case DATE:
return new LongStreamReader(streamDescriptor);
case FLOAT:
return new FloatStreamReader(streamDescriptor);
case DOUBLE:
return new DoubleStreamReader(streamDescriptor);
case BINARY:
case STRING:
case VARCHAR:
return new SliceStreamReader(streamDescriptor);
case TIMESTAMP:
return new TimestampStreamReader(streamDescriptor, hiveStorageTimeZone);
case LIST:
return new ListStreamReader(streamDescriptor, hiveStorageTimeZone);
case STRUCT:
return new StructStreamReader(streamDescriptor, hiveStorageTimeZone);
case MAP:
return new MapStreamReader(streamDescriptor, hiveStorageTimeZone);
case UNION:
case DECIMAL:
return new DecimalStreamReader(streamDescriptor);
case CHAR:
default:
throw new IllegalArgumentException("Unsupported type: " + streamDescriptor.getStreamType());
}
}
}
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