com.hazelcast.org.apache.calcite.sql.validate.TableConstructorNamespace 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 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.rel.type.RelDataType;
import com.hazelcast.org.apache.calcite.sql.SqlCall;
import com.hazelcast.org.apache.calcite.sql.SqlNode;
import static com.hazelcast.org.apache.calcite.util.Static.RESOURCE;
/**
* Namespace for a table constructor VALUES (expr, expr, ...)
.
*/
public class TableConstructorNamespace extends AbstractNamespace {
//~ Instance fields --------------------------------------------------------
private final SqlCall values;
private final SqlValidatorScope scope;
//~ Constructors -----------------------------------------------------------
/**
* Creates a TableConstructorNamespace.
*
* @param validator Validator
* @param values VALUES parse tree node
* @param scope Scope
* @param enclosingNode Enclosing node
*/
TableConstructorNamespace(
SqlValidatorImpl validator,
SqlCall values,
SqlValidatorScope scope,
SqlNode enclosingNode) {
super(validator, enclosingNode);
this.values = values;
this.scope = scope;
}
//~ Methods ----------------------------------------------------------------
protected RelDataType validateImpl(RelDataType targetRowType) {
// First, validate the VALUES. If VALUES is inside INSERT, infers
// the type of NULL values based on the types of target columns.
validator.validateValues(values, targetRowType, scope);
final RelDataType tableConstructorRowType =
validator.getTableConstructorRowType(values, scope);
if (tableConstructorRowType == null) {
throw validator.newValidationError(values, RESOURCE.incompatibleTypes());
}
return tableConstructorRowType;
}
public SqlNode getNode() {
return values;
}
/**
* Returns the scope.
*
* @return scope
*/
public SqlValidatorScope getScope() {
return scope;
}
@Override public boolean supportsModality(SqlModality modality) {
return modality == SqlModality.RELATION;
}
}