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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.sql;

import com.hazelcast.org.apache.calcite.rel.type.RelDataType;
import com.hazelcast.org.apache.calcite.rel.type.RelDataTypeFactory;
import com.hazelcast.org.apache.calcite.sql.parser.SqlParserPos;
import com.hazelcast.org.apache.calcite.sql.type.SqlTypeName;
import com.hazelcast.org.apache.calcite.util.TimestampString;

import static java.util.Objects.requireNonNull;

/**
 * A SQL literal representing a DATE, TIME or TIMESTAMP value.
 *
 * 

Examples: * *

    *
  • DATE '2004-10-22'
  • *
  • TIME '14:33:44.567'
  • *
  • TIMESTAMP '1969-07-21 03:15 GMT'
  • *
*/ public abstract class SqlAbstractDateTimeLiteral extends SqlLiteral { //~ Instance fields -------------------------------------------------------- protected final boolean hasTimeZone; protected final int precision; //~ Constructors ----------------------------------------------------------- /** * Constructs a datetime literal. */ protected SqlAbstractDateTimeLiteral(Object d, boolean tz, SqlTypeName typeName, int precision, SqlParserPos pos) { super(d, typeName, pos); this.hasTimeZone = tz; this.precision = precision; } //~ Methods ---------------------------------------------------------------- /** Converts this literal to a {@link TimestampString}. */ protected TimestampString getTimestamp() { return (TimestampString) requireNonNull(value, "value"); } public int getPrec() { return precision; } /** * Returns e.g. DATE '1969-07-21'. */ @Override public abstract String toString(); /** * Returns e.g. 1969-07-21. */ public abstract String toFormattedString(); @Override public RelDataType createSqlType(RelDataTypeFactory typeFactory) { return typeFactory.createSqlType( getTypeName(), getPrec()); } @Override public void unparse( SqlWriter writer, int leftPrec, int rightPrec) { writer.literal(this.toString()); } }




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