com.hazelcast.jet.sql.impl.schema.HazelcastTableFunction 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.schema;
import com.hazelcast.org.apache.calcite.sql.SqlFunction;
import com.hazelcast.org.apache.calcite.sql.SqlFunctionCategory;
import com.hazelcast.org.apache.calcite.sql.SqlKind;
import com.hazelcast.org.apache.calcite.sql.SqlTableFunction;
import com.hazelcast.org.apache.calcite.sql.type.ReturnTypes;
import com.hazelcast.org.apache.calcite.sql.type.SqlOperandMetadata;
import com.hazelcast.org.apache.calcite.sql.type.SqlReturnTypeInference;
import static com.hazelcast.jet.sql.impl.validate.operators.typeinference.HazelcastReturnTypeInference.wrap;
public abstract class HazelcastTableFunction extends SqlFunction implements SqlTableFunction {
private final SqlReturnTypeInference returnTypeInference;
protected HazelcastTableFunction(
String name,
SqlOperandMetadata operandMetadata,
SqlReturnTypeInference returnTypeInference
) {
super(
name,
SqlKind.OTHER_FUNCTION,
ReturnTypes.CURSOR,
operandMetadata.typeInference(),
operandMetadata,
SqlFunctionCategory.USER_DEFINED_TABLE_SPECIFIC_FUNCTION
);
this.returnTypeInference = wrap(returnTypeInference);
}
@Override
public final SqlReturnTypeInference getRowTypeInference() {
return returnTypeInference;
}
}
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