com.hazelcast.org.apache.calcite.sql.validate.CatalogScope 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.validate;
import com.hazelcast.org.apache.calcite.sql.SqlNode;
import com.hazelcast.com.google.com.hazelcast.com.on.collect.ImmutableList;
import java.util.List;
/**
* Implementation of {@link SqlValidatorScope} that can see all schemas in the
* current catalog.
*
* Occurs near the root of the scope stack; its parent is typically
* {@link EmptyScope}.
*
*
Helps resolve {@code schema.table.column} column references, such as
*
*
select sales.emp.empno from sales.emp
*/
class CatalogScope extends DelegatingScope {
/** Fully-qualified name of the catalog. Typically empty or ["CATALOG"]. */
final ImmutableList names;
//~ Constructors -----------------------------------------------------------
CatalogScope(SqlValidatorScope parent, List names) {
super(parent);
this.names = ImmutableList.copyOf(names);
}
//~ Methods ----------------------------------------------------------------
public SqlNode getNode() {
throw new UnsupportedOperationException();
}
}