com.hazelcast.shaded.org.apache.calcite.sql2rel.SqlNodeToRexConverter 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.shaded.org.apache.calcite.sql2rel;
import com.hazelcast.shaded.org.apache.calcite.rex.RexLiteral;
import com.hazelcast.shaded.org.apache.calcite.rex.RexNode;
import com.hazelcast.shaded.org.apache.calcite.sql.SqlCall;
import com.hazelcast.shaded.org.apache.calcite.sql.SqlIntervalQualifier;
import com.hazelcast.shaded.org.apache.calcite.sql.SqlLiteral;
import com.hazelcast.shaded.org.apache.calcite.sql.SqlNode;
/**
* Converts expressions from {@link SqlNode} to {@link RexNode}.
*/
public interface SqlNodeToRexConverter {
//~ Methods ----------------------------------------------------------------
/**
* Converts a {@link SqlCall} to a {@link RexNode} expression.
*/
RexNode convertCall(
SqlRexContext cx,
SqlCall call);
/**
* Converts a {@link SqlLiteral SQL literal} to a
* {@link RexLiteral REX literal}.
*
* The result is {@link RexNode}, not {@link RexLiteral} because if the
* literal is NULL (or the boolean Unknown value), we make a CAST(NULL
* AS type)
expression.
*/
RexNode convertLiteral(
SqlRexContext cx,
SqlLiteral literal);
/**
* Converts a {@link SqlIntervalQualifier SQL Interval Qualifier} to a
* {@link RexLiteral REX literal}.
*/
RexLiteral convertInterval(
SqlRexContext cx,
SqlIntervalQualifier intervalQualifier);
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy