Operation.java

/*
 * 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 io.github.bsonpatch;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

public enum Operation {
    ADD("add"),
    REMOVE("remove"),
    REPLACE("replace"),
    MOVE("move"),
    COPY("copy"),
    TEST("test");

	private final static Map<String, Operation> OPS = createImmutableMap();
	
    private static Map<String, Operation> createImmutableMap() {
    	Map<String, Operation> map = new HashMap<String, Operation>();
    	map.put(ADD.rfcName, ADD);
    	map.put(REMOVE.rfcName, REMOVE);
        map.put(REPLACE.rfcName, REPLACE);
        map.put(MOVE.rfcName, MOVE);
        map.put(COPY.rfcName, COPY);
        map.put(TEST.rfcName, TEST);
        return Collections.unmodifiableMap(map);
    }

    private String rfcName;

    Operation(String rfcName) {
        this.rfcName = rfcName;
    }

    public static Operation fromRfcName(String rfcName) throws InvalidBsonPatchException {
        if (rfcName == null) throw new InvalidBsonPatchException("rfcName cannot be null");
        Operation op = OPS.get(rfcName.toLowerCase());
        if (op == null) throw new InvalidBsonPatchException("unknown / unsupported operation " + rfcName);
        return op;
    }

    public String rfcName() {
        return this.rfcName;
    }


}