/*
 * 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.paimon.types;

import java.util.Objects;

/** Used to indicate the uniqueness of a field. */
public class FieldIdentifier {
    private final String name;
    private final DataType type;
    private final String description;

    public FieldIdentifier(DataField dataField) {
        this.name = dataField.name();
        this.type = dataField.type();
        this.description = dataField.description();
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        FieldIdentifier field = (FieldIdentifier) o;
        return Objects.equals(name, field.name)
                && Objects.equals(type, field.type)
                && Objects.equals(description, field.description);
    }

    @Override
    public int hashCode() {
        return Objects.hash(name, type, description);
    }
}
