cassandra-trunk/src/java/org/apache/cassandra/cql3/functions/PartialScalarFunction.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 org.apache.cassandra.cql3.functions;

import java.nio.ByteBuffer;
import java.util.List;

import org.apache.cassandra.transport.ProtocolVersion;

/**
 * A partial application of a function.
 *
 * @see ScalarFunction#partialApplication(ProtocolVersion, List)
 */
public interface PartialScalarFunction extends ScalarFunction
{
    /**
     * Returns the original function.
     *
     * @return the original function
     */
    public Function getFunction();

    /**
     * Returns the list of input parameters for the function where some parameters can be {@link #UNRESOLVED}.
     *
     * @return the list of input parameters for the function
     */
    public List<ByteBuffer> getPartialArguments();
}
