org.apache.asterix.om.functions.AsterixFunction Maven / Gradle / Ivy

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/*
 * 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.asterix.om.functions;

import java.io.Serializable;

public class AsterixFunction implements Serializable {

    private final String name;
    private final int arity;
    public final static int VARARGS = -1;

    public AsterixFunction(String name, int arity) throws IllegalArgumentException {
        this.name = name;
        this.arity = arity;
    }

    public String getName() {
        return name;
    }

    public int getArity() {
        return arity;
    }

    public String toString() {
        return name;
    }

    @Override
    public int hashCode() {
        return toString().hashCode();
    }

    @Override
    public boolean equals(Object o) {
        if (!(o instanceof AsterixFunction)) {
            return false;
        }
        if (name.equals(((AsterixFunction) o).getName()) || arity == VARARGS) {
            return true;
        }
        return false;
    }

}