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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.cassandra.cql3.statements;

import java.util.*;

import org.apache.cassandra.exceptions.InvalidRequestException;
import org.apache.cassandra.exceptions.RequestValidationException;
import org.apache.cassandra.exceptions.SyntaxException;

public class IndexPropDefs extends PropertyDefinitions
{
    public static final String KW_OPTIONS = "options";

    public static final Set keywords = new HashSet<>();
    public static final Set obsoleteKeywords = new HashSet<>();

    public boolean isCustom;
    public String customClass;

    static
    {
        keywords.add(KW_OPTIONS);
    }

    public void validate() throws RequestValidationException
    {
        validate(keywords, obsoleteKeywords);

        if (isCustom && customClass == null)
            throw new InvalidRequestException("CUSTOM index requires specifiying the index class");

        if (!isCustom && customClass != null)
            throw new InvalidRequestException("Cannot specify index class for a non-CUSTOM index");

        if (!isCustom && !properties.isEmpty())
            throw new InvalidRequestException("Cannot specify options for a non-CUSTOM index");

        if (getRawOptions().containsKey(IndexTarget.CUSTOM_INDEX_OPTION_NAME))
            throw new InvalidRequestException(String.format("Cannot specify %s as a CUSTOM option",
                                                            IndexTarget.CUSTOM_INDEX_OPTION_NAME));

        if (getRawOptions().containsKey(IndexTarget.TARGET_OPTION_NAME))
            throw new InvalidRequestException(String.format("Cannot specify %s as a CUSTOM option",
                                                            IndexTarget.TARGET_OPTION_NAME));

    }

    public Map getRawOptions() throws SyntaxException
    {
        Map options = getMap(KW_OPTIONS);
        return options == null ? Collections.emptyMap() : options;
    }

    public Map getOptions() throws SyntaxException
    {
        Map options = new HashMap<>(getRawOptions());
        options.put(IndexTarget.CUSTOM_INDEX_OPTION_NAME, customClass);
        return options;
    }
}