| /* |
| * 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 org.apache.bval.jsr.groups; |
| |
| import java.util.Objects; |
| import java.util.Optional; |
| |
| import javax.validation.metadata.GroupConversionDescriptor; |
| |
| import org.apache.bval.util.Lazy; |
| import org.apache.bval.util.LazyInt; |
| import org.apache.bval.util.Validate; |
| |
| public class GroupConversion implements GroupConversionDescriptor { |
| public static class Builder { |
| private final Class<?> from; |
| |
| private Builder(Class<?> from) { |
| this.from = from; |
| } |
| |
| public GroupConversion to(Class<?> to) { |
| return new GroupConversion(from, to); |
| } |
| } |
| |
| public static Builder from(Class<?> from) { |
| return new Builder(from); |
| } |
| |
| private final Class<?> from; |
| private final Class<?> to; |
| private final LazyInt hashCode; |
| private final Lazy<String> toString; |
| |
| private GroupConversion(Class<?> from, Class<?> to) { |
| super(); |
| this.from = Validate.notNull(from, "from"); |
| this.to = Validate.notNull(to, "to"); |
| this.hashCode = new LazyInt(() -> Objects.hash(this.from, this.to)); |
| this.toString = new Lazy<>( |
| () -> String.format("%s from %s to %s", GroupConversion.class.getSimpleName(), this.from, this.to)); |
| } |
| |
| @Override |
| public Class<?> getFrom() { |
| return from; |
| } |
| |
| @Override |
| public Class<?> getTo() { |
| return to; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| return obj == this |
| || Optional.ofNullable(obj).filter(GroupConversion.class::isInstance).map(GroupConversion.class::cast) |
| .filter(gc -> Objects.equals(from, gc.from) && Objects.equals(to, gc.to)).isPresent(); |
| } |
| |
| @Override |
| public int hashCode() { |
| return hashCode.getAsInt(); |
| } |
| |
| @Override |
| public String toString() { |
| return toString.get(); |
| } |
| } |