com.hazelcast.org.apache.calcite.sql.SqlCharStringLiteral 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;
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.Bug;
import com.hazelcast.org.apache.calcite.util.NlsString;
import com.hazelcast.org.apache.calcite.util.Util;
import com.hazelcast.org.checkerframework.checker.nullness.qual.Nullable;
import java.util.List;
import java.util.Objects;
/**
* A character string literal.
*
* Its {@link #value} field is an {@link NlsString} and
* {@link #getTypeName typeName} is {@link SqlTypeName#CHAR}.
*/
public class SqlCharStringLiteral extends SqlAbstractStringLiteral {
//~ Constructors -----------------------------------------------------------
protected SqlCharStringLiteral(NlsString val, SqlParserPos pos) {
super(val, SqlTypeName.CHAR, pos);
}
//~ Methods ----------------------------------------------------------------
/**
* Returns the underlying NlsString.
*
* @deprecated Use {@link #getValueAs getValueAs(NlsString.class)}
*/
@Deprecated // to be removed before 2.0
public NlsString getNlsString() {
return getValueNonNull();
}
private NlsString getValueNonNull() {
return (NlsString) Objects.requireNonNull(value, "value");
}
/**
* Returns the collation.
*/
public @Nullable SqlCollation getCollation() {
return getValueNonNull().getCollation();
}
@Override public SqlCharStringLiteral clone(SqlParserPos pos) {
return new SqlCharStringLiteral(getValueNonNull(), pos);
}
@Override public void unparse(
SqlWriter writer,
int leftPrec,
int rightPrec) {
final NlsString nlsString = getValueNonNull();
if (false) {
Util.discard(Bug.FRG78_FIXED);
String stringValue = nlsString.getValue();
writer.literal(
writer.getDialect().quoteStringLiteral(stringValue));
}
writer.literal(nlsString.asSql(true, true, writer.getDialect()));
}
@Override protected SqlAbstractStringLiteral concat1(List literals) {
return new SqlCharStringLiteral(
NlsString.concat(
Util.transform(literals,
literal -> literal.getValueAs(NlsString.class))),
literals.get(0).getParserPosition());
}
}