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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 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.jdbc;

import com.hazelcast.org.apache.calcite.config.CalciteConnectionConfig;
import com.hazelcast.org.apache.calcite.prepare.CalciteCatalogReader;
import com.hazelcast.org.apache.calcite.sql.fun.SqlStdOperatorTable;
import com.hazelcast.org.apache.calcite.sql.validate.SqlValidatorImpl;

import com.hazelcast.com.google.common.collect.ImmutableList;

/**
 * A SqlValidator with schema and type factory of the given
 * {@link com.hazelcast.org.apache.calcite.jdbc.CalcitePrepare.Context}.
 *
 * 

This class is only used to derive data type for DDL sql node. * Usually we deduce query sql node data type(i.e. the {@code SqlSelect}) * during the validation phrase. DDL nodes don't have validation, * they can be executed directly through * {@link com.hazelcast.org.apache.calcite.server.DdlExecutor}. * *

During the execution, {@link com.hazelcast.org.apache.calcite.sql.SqlDataTypeSpec} uses * this validator to derive its type. */ public class ContextSqlValidator extends SqlValidatorImpl { /** * Create a {@code ContextSqlValidator}. * @param context Prepare context. * @param mutable Whether to get the mutable schema. */ public ContextSqlValidator(CalcitePrepare.Context context, boolean mutable) { super(SqlStdOperatorTable.instance(), getCatalogReader(context, mutable), context.getTypeFactory(), Config.DEFAULT); } private static CalciteCatalogReader getCatalogReader( CalcitePrepare.Context context, boolean mutable) { return new CalciteCatalogReader( mutable ? context.getMutableRootSchema() : context.getRootSchema(), ImmutableList.of(), context.getTypeFactory(), CalciteConnectionConfig.DEFAULT); } }





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