com.hazelcast.shaded.org.apache.calcite.rex.RexPatternFieldRef 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.rex;
import com.hazelcast.shaded.org.apache.calcite.rel.type.RelDataType;
import com.hazelcast.shaded.org.apache.calcite.sql.SqlKind;
/**
* Variable that references a field of an input relational expression.
*/
public class RexPatternFieldRef extends RexInputRef {
private final String alpha;
public RexPatternFieldRef(String alpha, int index, RelDataType type) {
super(index, type);
this.alpha = alpha;
digest = alpha + ".$" + index;
}
public String getAlpha() {
return alpha;
}
public static RexPatternFieldRef of(String alpha, int index, RelDataType type) {
return new RexPatternFieldRef(alpha, index, type);
}
public static RexPatternFieldRef of(String alpha, RexInputRef ref) {
return new RexPatternFieldRef(alpha, ref.getIndex(), ref.getType());
}
@Override public R accept(RexVisitor visitor) {
return visitor.visitPatternFieldRef(this);
}
@Override public R accept(RexBiVisitor visitor, P arg) {
return visitor.visitPatternFieldRef(this, arg);
}
@Override public SqlKind getKind() {
return SqlKind.PATTERN_INPUT_REF;
}
}
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