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/*
 Copyright 2013 Red Hat, Inc. and/or its affiliates.

 This file is part of lightblue.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program.  If not, see .
 */
package com.redhat.lightblue.assoc.ep;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.redhat.lightblue.query.QueryExpression;

import com.redhat.lightblue.crud.CRUDFindRequest;

/**
 * Performs search for doc retrieval. Provides the 'setQuery' API to modify
 * search criteria for every retrieval
 *
 * Input: n/a Output: ResultDocument
 */
public class Retrieve extends Search {

    private static final Logger LOGGER = LoggerFactory.getLogger(Retrieve.class);

    private QueryExpression searchQuery;

    public Retrieve(ExecutionBlock block) {
        super(block);
    }

    public void setQuery(QueryExpression q) {
        this.searchQuery = q;
    }

    protected CRUDFindRequest buildFindRequest(ExecutionContext ctx) {
        CRUDFindRequest findRequest = new CRUDFindRequest();
        findRequest.setQuery(Searches.and(query, searchQuery));
        LOGGER.debug("Building find request with q={}",
                findRequest.getQuery());
        findRequest.setProjection(projection);
        findRequest.setSort(sort);
        findRequest.setFrom(from);
        findRequest.setTo(to);
        return findRequest;
    }
}