/
FindClassHierarchy.java
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/
FindClassHierarchy.java
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/*
* Copyright 2024 the original author or authors.
* <p>
* 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
* <p>
* https://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.java.search;
import lombok.EqualsAndHashCode;
import lombok.Value;
import org.openrewrite.ExecutionContext;
import org.openrewrite.Recipe;
import org.openrewrite.SourceFile;
import org.openrewrite.TreeVisitor;
import org.openrewrite.java.JavaIsoVisitor;
import org.openrewrite.java.table.ClassHierarchy;
import org.openrewrite.java.tree.J;
import org.openrewrite.java.tree.JavaType;
import java.util.stream.Collectors;
@Value
@EqualsAndHashCode(callSuper = false)
public class FindClassHierarchy extends Recipe {
transient ClassHierarchy classHierarchy = new ClassHierarchy(this);
@Override
public String getDisplayName() {
return "Find class hierarchy";
}
@Override
public String getDescription() {
return "Discovers all class declarations within a project, recording which files they appear in, their superclasses, and interfaces. " +
"That information is then recorded in a data table.";
}
@Override
public TreeVisitor<?, ExecutionContext> getVisitor() {
return new JavaIsoVisitor<ExecutionContext>() {
@Override
public J.ClassDeclaration visitClassDeclaration(J.ClassDeclaration classDecl, ExecutionContext ctx) {
J.ClassDeclaration cd = super.visitClassDeclaration(classDecl, ctx);
JavaType.FullyQualified type = cd.getType();
if(type == null) {
return cd;
}
classHierarchy.insertRow(ctx, new ClassHierarchy.Row(
getCursor().firstEnclosingOrThrow(SourceFile.class).getSourcePath().toString(),
type.getFullyQualifiedName(),
type.getSupertype() == null ? null : type.getSupertype().getFullyQualifiedName(),
type.getInterfaces().isEmpty() ? null : type.getInterfaces().stream()
.map(JavaType.FullyQualified::getFullyQualifiedName)
.collect(Collectors.joining(",")))
);
return cd;
}
};
}
}