/*
* Licensed to Crate under one or more contributor license agreements.
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial
* agreement.
*/
package io.crate.analyze.symbol;
import io.crate.metadata.Reference;
import io.crate.metadata.ReplaceMode;
import io.crate.metadata.ReplacingSymbolVisitor;
import java.util.function.Function;
public final class RefReplacer extends ReplacingSymbolVisitor<Function<? super Reference, ? extends Symbol>> {
private final static RefReplacer REPLACER = new RefReplacer();
private RefReplacer() {
super(ReplaceMode.COPY);
}
public static Symbol replaceRefs(Symbol tree, Function<? super Reference, ? extends Symbol> replaceFunc) {
return REPLACER.process(tree, replaceFunc);
}
@Override
public Symbol visitReference(Reference ref, Function<? super Reference, ? extends Symbol> replaceFunc) {
return replaceFunc.apply(ref);
}
}