com.hazelcast.org.apache.calcite.sql.fun.SqlTranslate3Function 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.fun;
import com.hazelcast.org.apache.calcite.sql.SqlCall;
import com.hazelcast.org.apache.calcite.sql.SqlFunction;
import com.hazelcast.org.apache.calcite.sql.SqlFunctionCategory;
import com.hazelcast.org.apache.calcite.sql.SqlKind;
import com.hazelcast.org.apache.calcite.sql.SqlNode;
import com.hazelcast.org.apache.calcite.sql.SqlWriter;
import com.hazelcast.org.apache.calcite.sql.type.OperandTypes;
import com.hazelcast.org.apache.calcite.sql.type.ReturnTypes;
/**
* Definition of the "TRANSLATE" built-in SQL function that takes 3 arguments.
*
* Based on Oracle's {@code TRANSLATE} function, it is com.hazelcast.com.only called
* "TRANSLATE3" to distinguish it from the standard SQL function
* {@link SqlStdOperatorTable#TRANSLATE} that takes 2 arguments and has an
* entirely different purpose.
*/
public class SqlTranslate3Function extends SqlFunction {
//~ Constructors -----------------------------------------------------------
/**
* Creates the SqlTranslate3Function.
*/
SqlTranslate3Function() {
super("TRANSLATE3",
SqlKind.OTHER_FUNCTION,
ReturnTypes.ARG0_NULLABLE_VARYING,
null,
OperandTypes.STRING_STRING_STRING,
SqlFunctionCategory.STRING);
}
//~ Methods ----------------------------------------------------------------
@Override public void unparse(SqlWriter writer, SqlCall call, int leftPrec,
int rightPrec) {
final SqlWriter.Frame frame = writer.startFunCall("TRANSLATE");
for (SqlNode sqlNode : call.getOperandList()) {
writer.sep(",");
sqlNode.unparse(writer, leftPrec, rightPrec);
}
writer.endFunCall(frame);
}
@Override public String getSignatureTemplate(final int operandsCount) {
if (3 == operandsCount) {
return "{0}({1}, {2}, {3})";
}
throw new AssertionError();
}
}