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99 lines
3.0 KiB
C++
99 lines
3.0 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#ifndef ARROW_COMPUTE_KERNELS_CAST_H
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#define ARROW_COMPUTE_KERNELS_CAST_H
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#include <memory>
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#include "arrow/status.h"
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#include "arrow/util/visibility.h"
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namespace arrow {
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class Array;
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class DataType;
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namespace compute {
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struct Datum;
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class FunctionContext;
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class UnaryKernel;
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struct ARROW_EXPORT CastOptions {
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CastOptions()
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: allow_int_overflow(false),
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allow_time_truncate(false),
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allow_float_truncate(false),
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allow_invalid_utf8(false) {}
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explicit CastOptions(bool safe)
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: allow_int_overflow(!safe),
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allow_time_truncate(!safe),
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allow_float_truncate(!safe),
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allow_invalid_utf8(!safe) {}
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static CastOptions Safe() { return CastOptions(true); }
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static CastOptions Unsafe() { return CastOptions(false); }
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bool allow_int_overflow;
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bool allow_time_truncate;
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bool allow_float_truncate;
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// Indicate if conversions from Binary/FixedSizeBinary to string must
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// validate the utf8 payload.
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bool allow_invalid_utf8;
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};
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/// \since 0.7.0
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/// \note API not yet finalized
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ARROW_EXPORT
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Status GetCastFunction(const DataType& in_type, std::shared_ptr<DataType> to_type,
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const CastOptions& options, std::unique_ptr<UnaryKernel>* kernel);
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/// \brief Cast from one array type to another
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/// \param[in] context the FunctionContext
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/// \param[in] value array to cast
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/// \param[in] to_type type to cast to
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/// \param[in] options casting options
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/// \param[out] out resulting array
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///
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/// \since 0.7.0
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/// \note API not yet finalized
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ARROW_EXPORT
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Status Cast(FunctionContext* context, const Array& value,
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std::shared_ptr<DataType> to_type, const CastOptions& options,
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std::shared_ptr<Array>* out);
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/// \brief Cast from one value to another
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/// \param[in] context the FunctionContext
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/// \param[in] value datum to cast
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/// \param[in] to_type type to cast to
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/// \param[in] options casting options
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/// \param[out] out resulting datum
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///
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/// \since 0.8.0
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/// \note API not yet finalized
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ARROW_EXPORT
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Status Cast(FunctionContext* context, const Datum& value,
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std::shared_ptr<DataType> to_type, const CastOptions& options, Datum* out);
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} // namespace compute
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} // namespace arrow
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#endif // ARROW_COMPUTE_KERNELS_CAST_H
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