com.hazelcast.org.apache.calcite.sql.validate.TableScope 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.SqlNode;
import com.hazelcast.org.apache.calcite.sql.SqlSelect;
import com.hazelcast.org.checkerframework.checker.nullness.qual.Nullable;
import java.util.Objects;
/**
* The name-resolution scope of a LATERAL TABLE clause.
*
* The objects visible are those in the parameters found on the left side of
* the LATERAL TABLE clause, and objects inherited from the parent scope.
*/
class TableScope extends ListScope {
//~ Instance fields --------------------------------------------------------
private final SqlNode node;
//~ Constructors -----------------------------------------------------------
/**
* Creates a scope corresponding to a LATERAL TABLE clause.
*
* @param parent Parent scope
*/
TableScope(SqlValidatorScope parent, SqlNode node) {
super(Objects.requireNonNull(parent, "parent"));
this.node = Objects.requireNonNull(node, "node");
}
//~ Methods ----------------------------------------------------------------
@Override public SqlNode getNode() {
return node;
}
@Override public boolean isWithin(@Nullable SqlValidatorScope scope2) {
if (this == scope2) {
return true;
}
SqlValidatorScope s = getValidator().getSelectScope((SqlSelect) node);
return s.isWithin(scope2);
}
}