com.hazelcast.org.apache.calcite.sql.validate.PivotScope Maven / Gradle / Ivy
/*
* 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.validate;
import com.hazelcast.org.apache.calcite.sql.SqlPivot;
import static java.util.Objects.requireNonNull;
/**
* Scope for expressions in a {@code PIVOT} clause.
*/
public class PivotScope extends ListScope {
//~ Instance fields ---------------------------------------------
private final SqlPivot pivot;
/** Creates a PivotScope. */
public PivotScope(SqlValidatorScope parent, SqlPivot pivot) {
super(parent);
this.pivot = pivot;
}
/** By analogy with
* {@link com.hazelcast.org.apache.calcite.sql.validate.ListScope#getChildren()}, but this
* scope only has one namespace, and it is anonymous. */
public SqlValidatorNamespace getChild() {
return requireNonNull(
validator.getNamespace(pivot.query),
() -> "namespace for pivot.query " + pivot.query);
}
@Override public SqlPivot getNode() {
return pivot;
}
}