io.trino.operator.scalar.JsonStringToRowCast 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 io.trino.operator.scalar;
import io.trino.metadata.SqlScalarFunction;
import io.trino.spi.function.BoundSignature;
import io.trino.spi.function.FunctionMetadata;
import io.trino.spi.function.Signature;
import io.trino.spi.type.TypeSignature;
import static io.trino.operator.scalar.JsonToRowCast.JSON_TO_ROW;
import static io.trino.spi.type.TypeSignatureParameter.typeVariable;
public final class JsonStringToRowCast
extends SqlScalarFunction
{
public static final JsonStringToRowCast JSON_STRING_TO_ROW = new JsonStringToRowCast();
public static final String JSON_STRING_TO_ROW_NAME = "$internal$json_string_to_row_cast";
private JsonStringToRowCast()
{
super(FunctionMetadata.scalarBuilder(JSON_STRING_TO_ROW_NAME)
.signature(Signature.builder()
.longVariable("N")
.variadicTypeParameter("T", "row")
.returnType(new TypeSignature("T"))
.argumentType(new TypeSignature("varchar", typeVariable("N")))
.build())
.nullable()
.hidden()
.noDescription()
.build());
}
@Override
protected SpecializedSqlScalarFunction specialize(BoundSignature boundSignature)
{
return JSON_TO_ROW.specialize(boundSignature);
}
}