com.hazelcast.org.apache.calcite.sql.type.ExplicitOperandTypeChecker Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you 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 com.hazelcast.org.apache.calcite.sql.type;
import com.hazelcast.org.apache.calcite.rel.type.RelDataType;
import com.hazelcast.org.apache.calcite.rel.type.RelDataTypeField;
import com.hazelcast.org.apache.calcite.sql.SqlCallBinding;
import com.hazelcast.org.apache.calcite.sql.SqlOperandCountRange;
import com.hazelcast.org.apache.calcite.sql.SqlOperator;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import static java.util.Objects.requireNonNull;
/**
* Parameter type-checking strategy for Explicit Type.
*/
public class ExplicitOperandTypeChecker implements SqlOperandTypeChecker {
//~ Methods ----------------------------------------------------------------
private final RelDataType type;
public ExplicitOperandTypeChecker(RelDataType type) {
this.type = Objects.requireNonNull(type, "type");
}
@Override public boolean isOptional(int i) {
return false;
}
@Override public boolean checkOperandTypes(
SqlCallBinding callBinding,
boolean throwOnFailure) {
List families = new ArrayList<>();
List fieldList = type.getFieldList();
for (int i = 0; i < fieldList.size(); i++) {
RelDataTypeField field = fieldList.get(i);
SqlTypeName sqlTypeName = field.getType().getSqlTypeName();
if (sqlTypeName == SqlTypeName.ROW) {
if (field.getType().equals(callBinding.getOperandType(i))) {
families.add(SqlTypeFamily.ANY);
}
} else {
families.add(
requireNonNull(sqlTypeName.getFamily(),
() -> "keyType.getSqlTypeName().getFamily() null, type is " + sqlTypeName));
}
}
return OperandTypes.family(families).checkOperandTypes(callBinding, throwOnFailure);
}
@Override public SqlOperandCountRange getOperandCountRange() {
return SqlOperandCountRanges.of(type.getFieldCount());
}
@Override public String getAllowedSignatures(SqlOperator op, String opName) {
return " " + opName + " ";
}
@Override public Consistency getConsistency() {
return Consistency.NONE;
}
}