com.hazelcast.jet.sql.impl.validate.operators.typeinference.JsonFunctionOperandTypeInference Maven / Gradle / Ivy
/*
* Copyright 2021 Hazelcast Inc.
*
* Licensed under the Hazelcast Community License (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://hazelcast.com/hazelcast-community-license
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.jet.sql.impl.validate.operators.typeinference;
import com.hazelcast.org.apache.calcite.rel.type.RelDataType;
import com.hazelcast.org.apache.calcite.sql.SqlCallBinding;
import com.hazelcast.org.apache.calcite.sql.type.SqlOperandTypeInference;
import com.hazelcast.org.apache.calcite.sql.type.SqlTypeName;
import static com.hazelcast.jet.sql.impl.validate.types.HazelcastTypeUtils.isNullOrUnknown;
public final class JsonFunctionOperandTypeInference implements SqlOperandTypeInference {
@Override
public void inferOperandTypes(final SqlCallBinding callBinding,
final RelDataType returnType,
final RelDataType[] operandTypes) {
for (int i = 0; i < callBinding.getOperandCount(); i++) {
operandTypes[i] = callBinding.getOperandType(i);
if (isNullOrUnknown(operandTypes[i].getSqlTypeName())) {
operandTypes[i] = callBinding.getTypeFactory().createSqlType(SqlTypeName.VARCHAR);
}
}
if (isNullOrUnknown(operandTypes[0].getSqlTypeName())) {
operandTypes[0] = callBinding.getTypeFactory().createSqlType(SqlTypeName.VARCHAR);
}
}
}