com.hazelcast.org.apache.calcite.sql.SqlTableRef 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;

import com.hazelcast.org.apache.calcite.sql.parser.SqlParserPos;

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

import java.util.List;

/**
 *  A SqlTableRef is a node of a parse tree which represents
 *  a table reference.
 *
 *  It can be attached with a sql hint statement, see {@link SqlHint} for details.
 */
public class SqlTableRef extends SqlCall {

  //~ Instance fields --------------------------------------------------------

  private final SqlIdentifier tableName;
  private final SqlNodeList hints;

  //~ Static fields/initializers ---------------------------------------------

  private static final SqlOperator OPERATOR =
      new SqlSpecialOperator("TABLE_REF", SqlKind.TABLE_REF);

  //~ Constructors -----------------------------------------------------------

  public SqlTableRef(SqlParserPos pos, SqlIdentifier tableName, SqlNodeList hints) {
    super(pos);
    this.tableName = tableName;
    this.hints = hints;
  }

  //~ Methods ----------------------------------------------------------------

  public SqlOperator getOperator() {
    return OPERATOR;
  }

  public List getOperandList() {
    return ImmutableList.of(tableName, hints);
  }

  @Override public void unparse(SqlWriter writer, int leftPrec, int rightPrec) {
    tableName.unparse(writer, leftPrec, rightPrec);
    if (this.hints != null && this.hints.size() > 0) {
      writer.newlineAndIndent();
      writer.keyword("/*+");
      this.hints.unparse(writer, 0, 0);
      writer.keyword("*/");
    }
  }
}