com.hazelcast.org.apache.calcite.sql.type.AbstractSqlType 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 com.hazelcast.com.liance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.com.hazelcast.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.RelDataTypeFamily;
import com.hazelcast.org.apache.calcite.rel.type.RelDataTypeField;
import com.hazelcast.org.apache.calcite.rel.type.RelDataTypeImpl;
import com.hazelcast.org.apache.calcite.rel.type.RelDataTypePrecedenceList;
import java.io.Serializable;
import java.util.List;
import java.util.Objects;
/**
* Abstract base class for SQL implementations of {@link RelDataType}.
*/
public abstract class AbstractSqlType
extends RelDataTypeImpl
implements Cloneable, Serializable {
//~ Instance fields --------------------------------------------------------
protected final SqlTypeName typeName;
protected boolean isNullable;
//~ Constructors -----------------------------------------------------------
/**
* Creates an AbstractSqlType.
*
* @param typeName Type name
* @param isNullable Whether nullable
* @param fields Fields of type, or null if not a record type
*/
protected AbstractSqlType(
SqlTypeName typeName,
boolean isNullable,
List fields) {
super(fields);
this.typeName = Objects.requireNonNull(typeName);
this.isNullable = isNullable || (typeName == SqlTypeName.NULL);
}
//~ Methods ----------------------------------------------------------------
// implement RelDataType
public SqlTypeName getSqlTypeName() {
return typeName;
}
// implement RelDataType
public boolean isNullable() {
return isNullable;
}
// implement RelDataType
public RelDataTypeFamily getFamily() {
return typeName.getFamily();
}
// implement RelDataType
public RelDataTypePrecedenceList getPrecedenceList() {
RelDataTypePrecedenceList list =
SqlTypeExplicitPrecedenceList.getListForType(this);
if (list != null) {
return list;
}
return super.getPrecedenceList();
}
}