org.apache.flink.formats.protobuf.deserialize.PbCodegenDeserializeFactory Maven / Gradle / Ivy
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* 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,
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package org.apache.flink.formats.protobuf.deserialize;
import org.apache.flink.formats.protobuf.PbCodegenException;
import org.apache.flink.formats.protobuf.PbFormatUtils;
import org.apache.flink.table.types.logical.ArrayType;
import org.apache.flink.table.types.logical.LogicalType;
import org.apache.flink.table.types.logical.MapType;
import org.apache.flink.table.types.logical.RowType;
import com.google.protobuf.Descriptors;
public class PbCodegenDeserializeFactory {
public static PbCodegenDeserializer getPbCodegenDes(
Descriptors.FieldDescriptor fd, LogicalType type, boolean readDefaultValues)
throws PbCodegenException {
// We do not use FieldDescriptor to check because when FieldDescriptor is an element type in
// array,
// FieldDescriptor.isRepeated() is still true
if (type instanceof RowType) {
return new PbCodegenRowDeserializer(
fd.getMessageType(), (RowType) type, readDefaultValues);
} else if (PbFormatUtils.isSimpleType(type)) {
return new PbCodegenSimpleDeserializer(fd);
} else if (type instanceof ArrayType) {
return new PbCodegenArrayDeserializer(
fd, ((ArrayType) type).getElementType(), readDefaultValues);
} else if (type instanceof MapType) {
return new PbCodegenMapDeserializer(fd, (MapType) type, readDefaultValues);
} else {
throw new PbCodegenException("cannot support flink type: " + type);
}
}
public static PbCodegenDeserializer getPbCodegenTopRowDes(
Descriptors.Descriptor descriptor, RowType rowType, boolean readDefaultValues) {
return new PbCodegenRowDeserializer(descriptor, rowType, readDefaultValues);
}
}