org.openrewrite.json.search.FindKey Maven / Gradle / Ivy
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/*
* Copyright 2021 the original author or authors.
*
* Licensed 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
*
* https://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 org.openrewrite.json.search;
import lombok.EqualsAndHashCode;
import lombok.Value;
import org.openrewrite.ExecutionContext;
import org.openrewrite.Option;
import org.openrewrite.Recipe;
import org.openrewrite.TreeVisitor;
import org.openrewrite.json.JsonIsoVisitor;
import org.openrewrite.json.JsonPathMatcher;
import org.openrewrite.json.tree.Json;
import org.openrewrite.json.tree.JsonKey;
import java.util.HashSet;
import java.util.Set;
@Value
@EqualsAndHashCode(callSuper = true)
public class FindKey extends Recipe {
@Option(displayName = "Key path",
description = "A JsonPath expression used to find matching keys.",
example = "$.subjects.kind")
String key;
@Override
public String getDisplayName() {
return "Find JSON object members";
}
@Override
public String getDescription() {
return "Find JSON object members by JsonPath expression.";
}
@Override
protected TreeVisitor getVisitor() {
JsonPathMatcher matcher = new JsonPathMatcher(key);
return new JsonIsoVisitor() {
@Override
public Json.Member visitMember(Json.Member member, ExecutionContext executionContext) {
Json.Member m = super.visitMember(member, executionContext);
if (matcher.matches(getCursor())) {
m = m.withKey(m.getKey().withMarkers(m.getKey().getMarkers().searchResult()));
}
return m;
}
};
}
public static Set find(Json j, String key) {
JsonPathMatcher matcher = new JsonPathMatcher(key);
Set ks = new HashSet<>();
new JsonIsoVisitor>() {
@Override
public Json.Member visitMember(Json.Member member, Set ks) {
Json.Member m = super.visitMember(member, ks);
if (matcher.matches(getCursor())) {
ks.add(m.getKey());
}
return m;
}
}.visit(j, ks);
return ks;
}
}