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* to you under the Apache License, Version 2.0 (the
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* http://www.apache.org/licenses/LICENSE-2.0
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package com.datastax.dse.driver.internal.core.graph.binary;
import com.datastax.oss.driver.api.core.data.UdtValue;
import com.datastax.oss.driver.api.core.type.DataType;
import com.datastax.oss.driver.api.core.type.UserDefinedType;
import com.datastax.oss.driver.internal.core.context.DefaultDriverContext;
import java.io.IOException;
import org.apache.tinkerpop.gremlin.structure.io.Buffer;
import org.apache.tinkerpop.gremlin.structure.io.binary.GraphBinaryReader;
import org.apache.tinkerpop.gremlin.structure.io.binary.GraphBinaryWriter;
public class UdtValueSerializer extends AbstractDynamicGraphBinaryCustomSerializer {
private final DefaultDriverContext driverContext;
public UdtValueSerializer(DefaultDriverContext driverContext) {
this.driverContext = driverContext;
}
@Override
public String getTypeName() {
return GraphBinaryModule.GRAPH_BINARY_UDT_VALUE_TYPE_NAME;
}
@Override
public UdtValue readDynamicCustomValue(Buffer buffer, GraphBinaryReader context)
throws IOException {
// read type definition first
DataType driverType = ComplexTypeSerializerUtil.decodeTypeDefinition(buffer, driverContext);
assert driverType instanceof UserDefinedType
: "GraphBinary UdtValue deserializer was called on a value that is not encoded as a UdtValue.";
UserDefinedType userDefinedType = (UserDefinedType) driverType;
UdtValue value = userDefinedType.newValue();
// then read values
return ComplexTypeSerializerUtil.decodeValue(
buffer, value, userDefinedType.getFieldTypes().size());
}
@Override
public void writeDynamicCustomValue(UdtValue value, Buffer buffer, GraphBinaryWriter context)
throws IOException {
// write type first in native protocol format
ComplexTypeSerializerUtil.encodeTypeDefinition(value.getType(), buffer, driverContext);
// write value after
ComplexTypeSerializerUtil.encodeValue(value, buffer);
}
}