com.metaeffekt.mirror.query.IndexQuery Maven / Gradle / Ivy

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/*
 * Copyright 2021-2024 the original author or authors.
 *
 * Licensed 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 com.metaeffekt.mirror.query;

import com.metaeffekt.mirror.index.Index;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;

public abstract class IndexQuery {

    private final static Logger LOG = LoggerFactory.getLogger(IndexQuery.class);

    protected final Index index;

    protected IndexQuery(File baseMirrorDirectory, Class requiredIndex) {
        if (requiredIndex == null) {
            LOG.debug("No index specified in index query");
            this.index = null;
        } else {
            this.index = Index.getInstance(requiredIndex, baseMirrorDirectory);
            this.index.assertExists();
        }

    }

    protected IndexQuery(Index index) {
        if (index == null) {
            throw new IllegalArgumentException("index must not be null");
        }

        this.index = index;
        this.index.assertExists();
    }

    public Index getIndex() {
        return index;
    }

    @Override
    public String toString() {
        if (index == null) {
            return "IndexQuery@" + Integer.toHexString(hashCode()) + "[no index]";
        } else {
            return "IndexQuery@" + Integer.toHexString(hashCode()) + "[" + index + "]";
        }
    }
}