com.frank.search.solr.core.query.QueryFunction.java Source code

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Here is the source code for com.frank.search.solr.core.query.QueryFunction.java

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/*
 * Copyright 2012 - 2013 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.frank.search.solr.core.query;

import org.springframework.util.Assert;

import java.util.Arrays;

/**
 * Implementation of {@code query(x)}
 * 
 * @author Christoph Strobl
 * @since 1.1
 */
public class QueryFunction extends AbstractFunction {

    private static final String OPERATION = "query";

    private QueryFunction(Query query) {
        super(Arrays.asList(query));
    }

    /**
     * @param query
     * @return
     */
    public static QueryFunction query(Query query) {
        Assert.notNull(query, "Cannot create query function for 'null' query.");

        return new QueryFunction(query);
    }

    /**
     * @param queryString
     * @return
     */
    public static QueryFunction query(String queryString) {
        Assert.hasText(queryString, "Cannot create query function for 'empty' queryString.");

        return query(new SimpleStringCriteria(queryString));
    }

    /**
     * @param criteria
     * @return
     */
    public static QueryFunction query(Criteria criteria) {
        Assert.notNull(criteria, "Cannot create query function for 'null' criteria.");

        return query(new SimpleQuery(criteria));
    }

    @Override
    public String getOperation() {
        return OPERATION;
    }

}